Abstract

A method for preparing self-doped titanium-niobium oxide negative electrode material using a waste titanium dioxide carrier includes preparing self-doped TiNb2O7 negative electrode material for lithium-ion battery by using waste titanium dioxide carrier comprises the following steps: S1. converting a waste titanium dioxide carrier into TiO2 powder with the Ti content of ≥95% and the Al content of 0.1-4.0%, based on the weight of oxide, respectively; and S2. mixing the TiO2 powder and Nb2O5 powder to form a mixture, roasting the mixture, and collecting the generated Al self-doped TiNb2O7, so as to obtain the self-doped TiNb2O7 negative electrode material. According to the method disclosed by the present invention, impurities represented by TiO2 and Al2O3 in the waste titanium dioxide carrier can be directly recycled, a self-doped TiNb2O7 (titanium niobium oxide) negative electrode material.

IPC Classes  ?

• C22B 34/12 - Obtaining titanium
• C22B 1/02 - Roasting processes
• C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
• H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries

Abstract

A method for preparing molybdenum-based self-doped lithium-ion battery negative electrode material from molybdenum-containing waste catalyst includes: (1) calcinating and mechanically activating a waste hydrogenation catalyst containing molybdenum trioxide and aluminum oxide to obtain an oil-free and carbon-free micron-sized waste catalyst powder; (2) mixing the waste catalyst powder with sodium carbonate to obtain a mixture, and subjecting the mixture to thermal treatment to selectively convert molybdenum trioxide in the waste catalyst into sodium molybdate to obtain a clinker; (3) subjecting the clinker to leaching with water being used as a leaching agent, and collecting a leaching solution; and (4) mixing the leaching solution with a solution of a polyol containing a ferrous salt, subjecting the resulting mixture to a hydrothermal reaction, and collecting produced self-Al-doped ferrous molybdate to obtain the molybdenum-based self-doped lithium-ion battery negative electrode material.

IPC Classes  ?

• H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
• C01G 49/00 - Compounds of iron
• H01M 4/02 - Electrodes composed of, or comprising, active material
• H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries

Abstract

A method includes 1) removal oil from aluminum-based platinum rhenium-containing spent catalysts; 2) mixing the spent catalyst and sodium hydroxide powder and heating in an oxygen-free environment to obtain a clinker; 3) leaching the clinker in a weakly alkaline aqueous solution to obtain a first leach solution containing the elements Al and Re and a first leach residue containing Pt and Re; 4) converting the first leaching solution into a sodium meta-aluminate solution and a sodium perrhenate solution; 5) adding an aqueous solution of an acidic reagent and an aqueous solution of an oxidizing reagent to the first leaching residue for oxidizing acid leaching to obtain a second leaching solution containing precursors including platinum and rhenium; 6) reducing and loading the precursors on a carbon carrier to obtain the modified platinum based catalyst for fuel cell. The method enables the recovery of Re and Al elements from spent catalysts.

IPC Classes  ?

• H01M 4/92 - Metals of platinum group

Abstract

A method for increasing production and injection of a reservoir coupled with flue gas desulfurization and denitrification includes a flue gas desulfurization and denitrification process and a reservoir acid liquor acidizing process, where the flue gas desulfurization and denitrification process is mixing a desulfurizing and denitrating agent with H2O2 solution uniformly to prepare a solution, and spraying it into a flue gas in an opposite direction of flue gas flow, or mixing O3 into a flue gas in an opposite direction of flue gas flow, and simultaneously spraying a desulfurizing and denitrating agent solution. When the pH of the solution system reaches 6 to 6.5, the reacted waste liquor is collected as an acid liquor. The process can control atmospheric pollution, improve the economic efficiency of flue gas treatment, and can prepare acid liquor cheaply.

IPC Classes  ?

• E21B 43/27 - Methods for stimulating production by forming crevices or fractures by use of eroding chemicals, e.g. acids
• B01D 53/60 - Simultaneously removing sulfur oxides and nitrogen oxides
• B01D 53/78 - Liquid phase processes with gas-liquid contact
• E21B 41/00 - Equipment or details not covered by groups

Abstract

2 enrichment degree are disclosed, and belongs to the technical field of experimental devices for oil and gas field development engineering. As for the equipment of the present disclosure, it is of a skid-mounted structure, is compact in structure, modular, easy to install, and highly mobile, can be applied to remote regions of overland deserts and narrow spaces on offshore platforms, has very high flexibility in operation and maintenance, and in most cases requires lower capital costs and lower energy consumption. As for a membrane separation unit of the present disclosure, a corresponding permeable gas storage tank is designed for each stage of membrane separator. Moreover, the membrane separation unit is further provided with a retained gas storage tank, and the retained gas storage tank and each stage of permeable gas storage tank are each provided with an injection port.

IPC Classes  ?

• B01D 53/22 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by diffusion
• B01D 53/26 - Drying gases or vapours
• B01D 53/30 - Controlling by gas-analysis apparatus
• B01D 71/02 - Inorganic material
• E21B 43/16 - Enhanced recovery methods for obtaining hydrocarbons

Abstract

A functionalized molybdenum disulfide nanosheet and its preparation method and application, where the preparation method includes steps below: mixing a solvent, 1 part by weight of lipoic acid and 5-10 parts by weight of a first compound for 2-4 h to obtain a mixture; adding 0.05-0.1 parts by weight of 1-hydroxybenzotriazole into the mixture, mixing for 24-48 h, and drying to obtain an intermediate product; performing ultrasonic treatment or heat treatment on a raw material-solution system to obtain a functionalized molybdenum disulfide nanosheet, where the raw material-solution system includes 5-10 parts by weight of the molybdenum disulfide nanosheet, 1 part by weight of the intermediate product and saline water, the first compound contains an ethylene oxide group and an alkylamine chain, the number of carbon atoms in the alkylamine chain is 12-18, and the number of the ethylene oxide group is 2-15.

IPC Classes  ?

• C09K 8/584 - Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
• C09C 1/00 - Treatment of specific inorganic materials other than fibrous fillers Preparation of carbon black
• C09C 3/08 - Treatment with low-molecular-weight organic compounds
• C09C 3/10 - Treatment with macromolecular organic compounds
• C09K 8/588 - Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
• E21B 43/16 - Enhanced recovery methods for obtaining hydrocarbons

Abstract

An infinitely expandable modular visual device for simulation of flow in porous media, including a simulation component, a fluid conveying component, and an image acquisition component; the simulation component includes a plurality of simulation units forming at least one layer of simulation unit array, the simulation unit includes a mounting base and a microscopic visualization model including a chip cover and a chip carrier having a porous media region and covered by the chip cover; the mounting bases of respective simulation units are connected to each other, the porous media regions of adjacent simulation units are communicated with each other; the fluid conveying component includes an injection-production pipeline communicated with the simulation units and configured to introduce the simulation fluid into the porous media region; the image acquisition component includes an image sensor facing the simulation unit for acquiring images of fluid flow in porous media.

IPC Classes  ?

• G01N 15/08 - Investigating permeability, pore volume, or surface area of porous materials

Abstract

An experimental apparatus for rock-breaking through vibration impact, including a confining pressure loading assembly, a drill bit, a drill rod, a drilling fluid circulation assembly, a rotary impact assembly and an axial impact assembly. The confining pressure loading assembly is configured to apply pressures to a core sample located in a core cavity in three directions perpendicular to each other. The drill bit is capable of inserting into the core cavity to drill the core sample. The drilling fluid circulation assembly includes a drilling fluid inlet, a drilling fluid outlet and a mud pump connected therebetween. The rotary impact assembly includes a hydraulic rotary motor and a hydraulic swing motor connected to the drill rod, respectively. The axial impact assembly includes a first hydraulic cylinder, and a servo linear actuator connected to the first hydraulic cylinder and the drill rod.

IPC Classes  ?

• E21B 1/14 - Percussion drilling with a reciprocating impulse member driven by a rotating mechanism
• E21B 1/26 - Percussion drilling with a reciprocating impulse member the impulse member being a piston driven directly by fluid pressure by liquid pressure
• E21B 21/01 - Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
• E21B 47/06 - Measuring temperature or pressure

Abstract

The present disclosure discloses a combined apparatus for experimentation on different storage modes of carbon dioxide, which comprises a displacement device, a storage reaction device and a measuring device, wherein the displacement device comprises a displacement pump, and an intermediate oil-water container and an intermediate carbon dioxide container that are arranged in parallel, the displacement pump is connected to a first end of the parallel connection of the intermediate oil-water container and the intermediate carbon dioxide container, and an inlet end of the storage reaction device is connected to a second end of the parallel connection of the intermediate oil-water container and the intermediate carbon dioxide container; the measuring device comprises a weigher, a first pressure detector, a gas-liquid separator, a gas meter and a mineral analyzer, wherein the first pressure detector is arranged in the intermediate oil-water container, and the gas-liquid separator is connected to the outlet end of the storage reaction device. Thus, the storage amount of carbon dioxide in different storage modes can be evaluated by means of a single apparatus. Compared with the prior art in which different storage experiments are performed separately.

IPC Classes  ?

• G01N 15/08 - Investigating permeability, pore volume, or surface area of porous materials
• G01N 33/24 - Earth materials
• E21B 43/16 - Enhanced recovery methods for obtaining hydrocarbons

Abstract

A coiled tubing flexible drill rod ultra-short radius radial drilling method, including: when in a first operation mode, activating a screw motor and a flexible power drilling tool located at a lower part of a coiled tubing; when in a second operation mode, only activating the screw motor and deactivating the flexible power drilling tool; and when in a third operation mode, only activating the flexible power drilling tool connected to the drill bit below. A corresponding drilling string and system are also disclosed. The method and system can achieve the effects of a small deflecting radius, an adjustable deflecting angle, a high operating efficiency and a low risk.

IPC Classes  ?

• E21B 7/06 - Deflecting the direction of boreholes
• E21B 7/04 - Directional drilling
• E21B 17/20 - Flexible or articulated drilling pipes
• E21B 29/06 - Cutting windows, e.g. directional window cutters for whipstock operations
• E21B 37/02 - Scrapers specially adapted therefor

Abstract

The present application provides an underwater-wellhead feeding tool assembly and a use method thereof. The device controls a controller to add pressure to an inside of a drive cylinder through a first pipeline via a first port, and to add pressure to a cavity apace between a pressure-bearing cylinder and the drive cylinder through a first branch line; the controller controls, through a third branch line, the drive device to transmit a torque to the underwater wellhead feeding tool, and transmit, through a second branch line, an axial force to the underwater wellhead feeding tool; and then a sensing component transmits a detected stress signal and/or strain signal to a data acquisition device through a test lead, thereby testing and analyzing an effect of different force field conditions on mechanical behaviors and performance of the underwater wellhead feeding tool.

IPC Classes  ?

• E21B 33/035 - Well headsSetting-up thereof specially adapted for underwater installations

Abstract

Environment-friendly reinforced foam for underground hydrogen storage and a preparation method thereof. The reinforced foam includes hydrogen and a liquid phase, where the liquid phase is an aqueous solution of a foaming agent, a foam stabilizer, a pH regulator and a particle cosolvent; and the foam stabilizer is a compounded system composed of 0-dimensional nanomaterial and 1-dimensional nanomaterial at a mass ratio of 2-5:1. In the reinforced foam of the present disclosure, the 0-dimensional and the 1-dimensional nanomaterials are compounded to form a nano-armor layer, which improves the stability of foam and the interfacial viscoelasticity of a liquid film by synergistic reinforcement, and inhibits the viscous fingering, escape and leakage of hydrogen in a reservoir, thereby not only being beneficial to improving the mobility of hydrogen, but also increasing the safety of hydrogen underground storage.

IPC Classes  ?

• B65G 5/00 - Storing fluids in natural or artificial cavities or chambers in the earth
• C08J 9/12 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent

Abstract

An aqueous carbon dioxide foam stabilized by organic Janus nanosheets, a preparation method and application thereof. The preparation method can be provided as: S1: subjecting molecules with hydrophobic tail to spontaneous and ordered arrangement in a mixture of ethanol and water; S2: adding molecules with hydrophilic head to the solution of S1, and adjusting a pH value to 6.0-6.5 to perform a synthesis of organic Janus nanosheet monomers; S3: adding ethanol to the solution of S2, and adjusting the pH value to 6.0-6.5 to perform a heating reflux; then adjusting the pH value to 7.0-8.0, and adding sodium ethylate, adjusting a temperature to 70-85° C. to perform a reaction under an inert atmosphere, and then adjusting the pH to 8.0-9.0, and stirring to be completely dissolved. The aqueous CO2 foam is prepared from CO2 and a liquid phase.

IPC Classes  ?

• C09K 23/16 - Amines or polyamines

Abstract

wf.

IPC Classes  ?

• E21B 44/00 - Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systemsSystems specially adapted for monitoring a plurality of drilling variables or conditions
• E21B 4/04 - Electric drives
• E21B 7/06 - Deflecting the direction of boreholes
• E21B 47/024 - Determining slope or direction of devices in the borehole
• G01D 21/02 - Measuring two or more variables by means not covered by a single other subclass

Abstract

The present disclosure provides a continental shelf profile determining method and apparatus based on non-delta transgression. The method includes: constructing a continental shelf profile two-dimensional model based on a river supply sediment volume and a sea level rise rate in a target work area; solving the two-dimensional model in a spatial rectangular coordinate system to generate a relational expression which is capable of representing a non-delta transgression slope and a river length; and determining a continental shelf profile of the target work area based on the relational expression. In the context of non-delta transgression, the continental shelf profile determining method and apparatus based on non-delta transgression provided by the present disclosure comprehensively consider the influences of a river sediment supply and a sea level rise on the continental shelf profile, to more accurately determine the change of the continental shelf profile of the target work area in the historical period.

IPC Classes  ?

• G01V 20/00 - Geomodelling in general

Abstract

The present disclosure provides a composite ionic liquid and a preparation method and a use thereof. A first aspect of the present disclosure provides a preparation method of a composite ionic liquid, where an ammonium salt, a first metal salt, a second metal salt, and a third metal salt are sequentially added into a reactor for performing a reaction under different conditions, and the composite ionic liquid is obtained after the reaction is finished. The composite ionic liquid prepared by the method may be used as a catalyst to catalyze an alkylation reaction of isoparaffin with C4 olefin to obtain alkylated oil, which has the advantages of high catalytic activity, long catalytic life, low consumption, and better distribution of the resulting alkylated oil, etc, and thereby significantly reducing the production costs and improving the quality of the resulted alkylated oil.

IPC Classes  ?

• B01J 27/24 - Nitrogen compounds
• B01J 23/10 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of rare earths
• B01J 27/10 - Chlorides
• B01J 37/04 - Mixing

Abstract

The present invention provides a mixed injection fluid and a corresponding method for enhancing CO2 sequestration and oil recovery, which is a method of the geothermal driven CO2 catalytic reduction for enhancing CO2 sequestration and oil recovery. In the present invention, a technical solution of the liquid nitrogen fracturing, an injection fluid injection, and the catalysis transportation and storage were adopted, which makes full use of the thermal energy of deep geothermal reservoir in combination with nano-Cu-based catalysts to activate the hydrothermal cracking reaction of crude oil and CO2 thermal reduction reaction, so to simultaneously enhance crude oil recovery and CO2 sequestration, fundamentally solving the existing problems of CO2-EOR technologies. Moreover, CO2 thermal catalytic reduction products can also work as a surfactant to accelerate the desorption crude oil from the rock surface and decrease the interfacial tension, and finally EOR.

IPC Classes  ?

• E21B 41/00 - Equipment or details not covered by groups
• B01D 53/62 - Carbon oxides
• B01D 53/90 - Injecting reactants
• B01J 23/825 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups with gallium, indium or thallium
• B01J 23/835 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups with germanium, tin or lead
• E21B 43/114 - Perforators using direct fluid action, e.g. abrasive jets
• E21B 43/16 - Enhanced recovery methods for obtaining hydrocarbons
• E21B 43/38 - Arrangements for separating materials produced by the well in the well

Abstract

The present invention provides a method of steam cracking using electricity to supply energy. This method is to provide energy for steam cracking reaction of a cracking raw material by electromagnetic induction with electricity; the cracking raw material comprises one or more of naphtha, cycloalkane and cycloolefin; wherein the cycloalkane is a C4-C8 cycloalkane, and the cycloolefin is a C4-C8 cycloolefin. The present invention utilizes electricity to provide energy for the steam cracking reaction through an electromagnetic coil, which is a new use of electricity and solve the current problem of excess electricity. Moreover, utilizing the electromagnetic coil to provide power can make the heat distribution in the furnace tube of the cracking furnace more uniform, and it is easier to control the reaction temperature and the progress of the reaction.

IPC Classes  ?

• C10G 9/24 - Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils by heating with electrical means
• C07C 4/04 - Thermal processes

Abstract

The present invention provides an iron and steel smelting method, wherein separating the product of the catalytic dehydrogenation reaction on propane to obtain a mixed gas containing hydrogen, methane, and ethane; and mixing the mixed gas with water and/or CO2 as a catalytic conversion raw material, and producing synthesis gas by means of a catalytic conversion reaction, the synthesis gas being used for iron smelting, and electricity being used to provide energy for the catalytic conversion reaction. The method catalytic dehydrogenation of propane is combined with steam cracking, and unconverted propane is prepared into methane, ethane, etc. by means of steam cracking; synthesis gas is further obtained by means of reforming and component adjustment, and the synthesis gas is a good raw material for direct reduction of iron.

IPC Classes  ?

• C01B 3/26 - Production of hydrogen or of gaseous mixtures containing hydrogen by decomposition of gaseous or liquid organic compounds of hydrocarbons using catalysts
• B01J 23/62 - Platinum group metals with gallium, indium, thallium, germanium, tin or lead
• B01J 23/26 - Chromium

Abstract

The present disclosure provides a training method and a prediction method for a diagenetic parameter prediction model based on an artificial intelligence algorithm, which includes: obtaining a plurality of diagenesis samples each including diagenetic condition parameters and an actual diagenetic parameter evolved therefrom; constructing an initial diagenetic parameter prediction model based on the diagenesis samples and a total dimension of the diagenetic condition parameters; and training the initial diagenetic parameter prediction model with the diagenesis samples so as to obtain a trained diagenetic parameter prediction model. The present disclosure can obtain a diagenetic parameter prediction model by training with the existing diagenesis samples, thereby solving problems of large amount of calculation, high uncertainty and large deviations in the prediction of the diagenetic parameters, which leads to a low evaluation accuracy of reservoirs and limits the oil and gas exploration.

IPC Classes  ?

• G06N 5/022 - Knowledge engineeringKnowledge acquisition

Abstract

The present disclosure provides a cyclone separator and a cyclone separation method. The cyclone separator includes a shell and a core tube. An upper end of the shell is provided with a gas inlet. A lower end of the shell is provided with a shell outlet. An opening at a lower end of the core tube is provided inside the shell. The lower end of the core tube is provided with a baffle structure, and at least a portion of the baffle structure extends vertically. By providing the baffle structure, the present disclosure can cut off the flow path of the short-circuit flow and the radially centripetal moving gas flow such as the centripetal flow in the particle spiral band area, weaken the short-circuit flow, the inner vortex flow and the precessing vortex core, thus improving separation efficiency of fine particles with particle diameters of 1 μm to 10 μm.

IPC Classes  ?

• B04C 5/103 - Bodies or members, e.g. bulkheads, guides, in the vortex chamber
• B04C 3/06 - Construction of inlets or outlets to the vortex chamber
• B04C 5/187 - Dust collectors forming an integral part of the vortex chamber

Abstract

A coupled fluidized beds reactor-regenerator apparatus for catalytic dehydrogenation of propane. The fluidized bed reactor comprising a raw material delivery system, a pre-rising system, a reaction system, a gas-solid separation system and an internal circulation pipeline, the reaction system includes a conical riser and a turbulent bed reactor; the raw material delivery system, the pre-rising system, the conical riser, the turbulent bed reactor, and the gas-solid separation system are consecutively connected in this order from bottom to top; the bottom outlet of the gas-solid separation system is connected to the inlet of the internal circulation pipeline, and the outlet of the internal circulation pipeline is connected to the raw material delivery system and/or the reaction system. The coupled fluidized beds reactor-regenerator apparatus for catalytic dehydrogenation of propane includes the fluidized bed reactor, a gas-solid airlift loop regenerator, a recirculation inclined pipe and a regeneration inclined pipe.

IPC Classes  ?

• B01J 8/26 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles according to "fluidised-bed" technique with two or more fluidised beds, e.g. reactor and regeneration installations
• B01J 8/24 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles according to "fluidised-bed" technique
• B01J 8/00 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes
• B01D 45/16 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream
• B01D 45/04 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
• B01D 3/38 - Steam distillation

Abstract

A continuous logging method and device is provide, where the method includes obtaining drilling fragment samples and full-diameter core samples, and screening out target rock cuttings from the drilling fragment samples; performing a micro-indentation experiment on the target rock cuttings to obtain a static parameter thereof; performing a triaxial compression experiment on the full-diameter core samples to obtain a dynamic parameter and a static parameter thereof; determining a first correspondence between the static parameter of the target rock cuttings and the dynamic parameter of the full-diameter core samples; determining a second correspondence between logging data and the static parameter of the target rock cuttings based on the first correspondence; and drawing a formation mechanical property profile based on the second correspondence. The method solves the problem of conventional methods which cannot draw a continuous and complete profile of the mechanical property of the whole well section.

IPC Classes  ?

• G01N 3/42 - Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid
• G01N 3/08 - Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
• G01N 33/24 - Earth materials

Abstract

The present invention belongs to the technical field of oil field drilling, and relates to a ground testing device for a stabilized platform of a rotary steerable drilling tool. The ground testing device includes: a first supporting member and a second supporting member that are oppositely arranged, where the second supporting member is provided with a first mounting hole; a drill collar and a drill collar motor mounted outside the first supporting member, where a motor shaft of the drill collar motor penetrates the first supporting member and is connected to the drill collar, and a stabilized platform mounting assembly is arranged inside the drill collar; and a first vibration member connected to the drill collar and a second vibration member arranged in the first mounting hole in a sleeved manner, where an elastic member is arranged between the second vibration member and the second supporting member, and the elastic member is arranged on the second vibration member in a sleeving manner. An end portion of the first vibration member is provided with first vibration teeth, an end portion of the second vibration member is provided with second vibration teeth matching the first vibration teeth, and the second vibration member is provided with a first stop member which matches a second stop member arranged in the first mounting hole. According to the present invention, vibration, interference loading, and high-temperature simulation can be performed, and ground tests of different types of mechanical stabilized platforms are achieved.

IPC Classes  ?

• G01M 7/02 - Vibration-testing
• G01M 7/04 - Monodirectional test stands
• E21B 7/04 - Directional drilling

Abstract

Provided is a decision-making method and system for a suspension operation of a marine riser system based on a digital twin, which belongs to the technical field of marine oil and gas development. The decision-making method includes: acquiring original monitoring data by the sensor group to establish a physical entity structure model; acquiring real-time monitoring data to establish a digital twin model of the physical entity structure; and introducing navigation path and speed of the drilling platform, and a configuration and suspension mode of the riser system, combined with the digital twin model of the marine riser coupling system and a limit performance parameter, providing a suspension operation decision-making model of the riser system, and making a real-time accurate suspension operation decision based on a multi-objective optimization algorithm, so as to guarantee a safe and efficient suspension operation of the riser system.

IPC Classes  ?

• G06F 30/20 - Design optimisation, verification or simulation

Abstract

A filter capable of automatically cutting off gas flow, including: a housing (1) with a cavity, a filter element (2) disposed in the cavity, a blocking mechanism disposed in the flow channel (13), and an unblocking member (23). The housing is provided with an inlet end (11) and an outlet end (12). The filter element (2) is provided with a first chamber (21). A second chamber (23) is formed between the filter element (2) and the housing (1), and a flow channel (13) is disposed between the first chamber (21) and the inlet end (11). The blocking mechanism has an unblocking state in which the blocking mechanism is cooperated with the unblocking member (23) to allow a gas flow to flow out of the flow channel (13), and a blocking state in which the blocking mechanism prevents the gas flow from flowing out of the flow channel (13).

IPC Classes  ?

• B01D 35/157 - Flow control valvesDamping or calibrated passages

Abstract

An experimental apparatus for simulating substance exchange between a wellbore and a formation. The apparatus includes: a wellbore simulation system, a wellbore liquid injection system, a formation simulation system, a formation fluid injection system, and a data acquisition system; the wellbore simulation system includes a vertically arranged wellbore body for simulating a wellbore; the formation simulation system includes a horizontally arranged sealing body for simulating a formation and a mortar filler filled in the sealing body; the wellbore liquid injection system is connected to the upper end of the wellbore body; the formation fluid injection system is connected to one end of the sealing body so as to inject a formation fluid into the sealing body; the other end of the sealing body is communicated with the bottom of the wellbore body; and the data acquisition system is electrically connected to the wellbore simulation system and the formation simulation system.

IPC Classes  ?

• E21B 41/00 - Equipment or details not covered by groups
• G09B 25/02 - Models for purposes not provided for in group , e.g. full-sized devices for demonstration purposes of industrial processesModels for purposes not provided for in group , e.g. full-sized devices for demonstration purposes of machinery

Abstract

The disclosure provides a multi-type hydrate formation simulation system and a method thereof. The simulation system comprises a hydrate generator, a gas source device and a cryogenic cooler. The hydrate generator comprises a reactor, in which a formation simulation space is provided and can be selectively filled with a loose formation skeleton or a consolidated formation skeleton. The gas source device is configured to introduce natural gas at a preset pressure into the formation simulation space. The cryogenic cooler comprises a temperature-adjustable thermotank, in which the hydrate generator is arranged. The simulation system and method provided can be used to study the influence of consolidated hydrate formation structures and loose hydrate formation structures and particle contact modes on the physical properties of hydrate rock, and are of great significance to the interpretation of hydrate formation exploration data and the estimation of hydrate saturation.

IPC Classes  ?

• G01N 3/12 - Pressure-testing
• E21B 41/00 - Equipment or details not covered by groups

Abstract

A deep-water drilling gas kick pilot-scale apparatus, including: a simulation wellbore having an upper wellbore transitioned to a lower wellbore through a variable cross section; a drilling tool with an annular space formed between the drilling tool and the simulation wellbore; a gas-injection system, comprising an air compressor and a gas-injection pipeline; a mud circulation system, comprising a mud supply source, a first pump, a second pump, and a mud-return pipeline; a Coriolis mass flowmeter provided on the mud-return pipeline; a Doppler sensor installed on the upper wellbore; and a built-in pressure gauge carrier connected between a drill pipe and a drill bit.

IPC Classes  ?

• E21B 41/00 - Equipment or details not covered by groups
• E21B 21/08 - Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure

Abstract

The embodiments of the present application provide a method and a device for identifying an unsafe behavior of a drilling operator, which relate to the field of data analysis, and the method includes obtaining eye movement data information of a drilling operator by an eye movement data sensor, processing the eye movement data information to obtain an eye movement characteristic parameter corresponding to the eye movement data information, inputting the eye movement characteristic parameter to an identification model to obtain an output result from the identification model, and determining an operation behavior of the operator according to the output result and sending a warning to the operator when the operation behavior is a preset type. Through analyzing the eye movement data information in real time, whether an operation behavior meets regulations can be determined, thus realizing real-time monitoring and identification of unsafe operation behaviors of the drilling operator.

IPC Classes  ?

• G06V 40/19 - Sensors therefor
• G06V 40/20 - Movements or behaviour, e.g. gesture recognition
• G06V 10/774 - Generating sets of training patternsBootstrap methods, e.g. bagging or boosting
• G08B 21/02 - Alarms for ensuring the safety of persons

Abstract

A system and a method evaluate the effect of proactive utilization of a spatial stress field in laboratory. The system includes a rock sample placement device for placing a rock sample, a confining pressure control device for applying a set confining pressure to the rock sample, a fracture imaging device, a fracturing fluid injection device for injecting fracturing fluid into the perforation in the wellbore of the rock sample to form fractures within the rock sample, a stress measurement device, and a processing device for calculating a stress field proactive utilization coefficient of the rock sample.

IPC Classes  ?

• G01N 3/12 - Pressure-testing
• G01N 15/08 - Investigating permeability, pore volume, or surface area of porous materials

Abstract

A switchable two-stage coalescence separation system, including a coalescer housing (1), a plurality of two-stage filter elements (2), and a particle detector (5). A lower portion and an upper portion of each of the two-stage filter elements (2) are located in a lower chamber (101) and an upper chamber (102) of the coalescer housing (1), respectively. Two gas inlet branch pipes are communicated with the lower chamber (101) and the upper chamber (102), respectively and are connected to a gas inlet main pipe (8) through a first multi-way valve (6). The particle detector (5) is disposed on the gas inlet main pipe (8). Two outlet branch pipes are communicated with the lower chamber (101) and the upper chamber (102), respectively and are connected to a gas outlet main pipe 13 through a second multi-way valve (7).

IPC Classes  ?

• B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
• B01D 46/62 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
• B01D 46/58 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in parallel
• B01D 46/24 - Particle separators, e.g. dust precipitators, using rigid hollow filter bodies

Abstract

A coalescing filter element (300) with double drainage layers, including an inner coalescing component (1) configured to captured a large amount of liquid in gas, and an outer coalescing component (2) configured to coalesce and filter a small amount of liquid remaining in the gas. The inner coalescing component (1) and the outer coalescing component (2) are cylindrical structures disposed in a vertical direction and opened at two ends. The outer coalescing component (2) is sleeved on an outer side of the inner coalescing component (1), and an annular drainage space (3) is formed between the inner coalescing component (1) and the outer coalescing component (2). A top end cap (4) is provided on top ends of the inner coalescing component (1) and the outer coalescing component (2). A bottom end cap (5) is provided on bottom ends of the inner coalescing component (1) and the outer coalescing component (2). The bottom end cap (5) is provided with a gas inlet (503) communicated with an interior of the inner coalescing component (1).

IPC Classes  ?

• B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
• B01D 46/24 - Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
• B01D 53/26 - Drying gases or vapours

Abstract

222 gas at a relatively high temperature, and a turbine (6) expands to perform external work so as to realize power generation.

IPC Classes  ?

• F01K 25/10 - Plants or engines characterised by use of special working fluids, not otherwise provided forPlants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
• F01K 13/00 - General layout or general methods of operation, of complete steam engine plants
• F01D 15/10 - Adaptations for driving, or combinations with, electric generators

Abstract

A dynamic crack leaking stoppage evaluation experiment device includes a crack simulation experiment instrument having a dynamic crack simulation mechanism. The dynamic crack leaking stoppage evaluation experiment device can simulate a dynamic change process of a crack from a closed state to an open state. An experiment method can be applied to study a variation range of the width of the crack that have been subjected to self-adaptive leaking stoppage with various combinations of leaking stoppage materials and under different increments, and the method can also be applied to quantitatively study on effecting patterns of rheological parameters and hydraulic parameters of well drilling fluid on stability of a leaking stoppage layer in the dynamic crack, so that enabled is not only simulation of leaking stoppage process of a dynamic crack, but also real-time monitoring and evaluation on leaking stoppage effect and leaking stoppage location inside the dynamic crack.

IPC Classes  ?

• G01N 3/12 - Pressure-testing
• E21B 21/00 - Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
• E21B 49/00 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
• G01N 15/02 - Investigating particle size or size distribution
• G01N 15/08 - Investigating permeability, pore volume, or surface area of porous materials
• G01N 33/24 - Earth materials

Abstract

The present invention relates to the field of petroleum industry phase oilfield chemistry, and specifically relates to a bionic and dual-phobic drilling fluid. The drilling fluid contains a bionic wall-fixing agent, a bionic lubricant, a super dual-phobic agent, a scrap-carrying agent and a bionic shale inhibitor. The present invention uses the theory of bionics and the theory of a downhole rock surface being double phobic as a basis. By means of using the bionic wall-fixing agent, the bionic lubricant, the super dual-phobic agent, the scrap-carrying agent and the bionic shale inhibitor, which have special properties of imitating animals and plants in nature, and using a series of bionic treatment agents, a set of bionic and dual-phobic drilling fluid systems, which corresponds to an unconventional, complex oil and gas well, is formed.

IPC Classes  ?

• C09K 8/16 - Clay-containing compositions characterised by the inorganic compounds other than clay
• C09K 8/24 - Polymers
• C09K 8/20 - Natural organic compounds or derivatives thereof, e.g. polysaccharides or lignin derivatives

Abstract

A continuous pipe flexible drill rod ultra-short radius radial drilling method, comprising: when in a first operation mode, starting a screw motor (7) and a flexible power drilling tool located at a lower part of a continuous pipe (2), a drill bit (9) being mounted at a lower end of a flexible drill rod (8), and the screw motor (7) and the flexible power drilling tool providing torque and drilling pressure for both the flexible drill rod (8) and the drill bit (9); when in a second operation mode, starting only the screw motor (7) and disabling the flexible power drilling tool, the lower end of the screw motor (7) being connected to the flexible drill rod (8), and the drill bit (9) being installed at the lower end of the flexible drill rod (8); and when in a third operation mode, starting only the flexible power drilling tool, the flexible power drilling tool being connected to the drill bit (9), the screw motor (7) being disabled in the operation process, the flexible drill rod (8) not rotating, the flexible power drilling tool entering a side-drilled branch wellbore along with the drill bit, and torque being directly provided for the drill bit, achieving rotary drilling. A corresponding well drilling column and system are also disclosed. In the present method and system, the results of a small inclination radius, an adjustable inclination angle, high operation efficiency and low risk can be achieved.

IPC Classes  ?

• E21B 7/04 - Directional drilling
• E21B 7/06 - Deflecting the direction of boreholes

Abstract

The present application provides a pipeline structural fault diagnosis apparatus and a diagnosis method. The pipeline structural fault diagnosis apparatus includes a signal generating apparatus configured to generate an acoustic wave signal by knocking a pipeline; a signal collecting apparatus configured to collect the acoustic wave signal; a signal storage apparatus configured to store the acoustic wave signal for a signal processing and analyzing apparatus to analyze and determine a fault type, a fault degree, and a fault position. The acoustic wave signal after being generated by the signal generating apparatus is collected by the signal collecting apparatus and stored in the signal storage apparatus. The signal processing and analyzing apparatus extracts the acoustic wave signal in the signal storage apparatus, and performs processing and analysis to determine the fault type, the fault degree, and the fault position of the pipeline structure.

IPC Classes  ?

• G01N 29/04 - Analysing solids
• F16L 55/40 - Constructional aspects of the body
• G01N 29/12 - Analysing solids by measuring frequency or resonance of acoustic waves
• F16L 101/30 - Inspecting, measuring or testing

Abstract

A pipeline (10) structure fault diagnosis apparatus, and a diagnosis method, which belong to the technical field of natural gas pipeline (10) safety, and aim to fill the gap in the prior art of the lack of apparatuses for implementing pipeline (10) structure multi-fault integrated diagnosis for natural gas pipelines (10). A signal generation apparatus is used for generating an acoustic wave signal when a pipeline (10) is struck; a signal collection apparatus (40) is used for collecting the acoustic wave signal; and a signal storage apparatus (50) is used for storing the acoustic wave signal for a signal processing and analysis apparatus (70) to perform analysis and determine a fault type, a fault degree and a fault position. After the signal generation apparatus generates the acoustic wave signal, the acoustic wave signal is collected by means of the signal collection apparatus (40), and is stored in the signal storage apparatus (50); the signal processing and analysis apparatus (70) extracts the acoustic wave signal from the signal storage apparatus (50), and performs processing and analysis, so as to determine the fault type, fault degree and fault position of the pipeline (10) structure, which is beneficial for performing fault inspection on the pipeline (10) in a timely manner, thereby guaranteeing safe operation of the pipeline (10).

IPC Classes  ?

• F16L 55/40 - Constructional aspects of the body
• F16L 55/32 - Constructional aspects of the propulsion means, e.g. towed by cables being self-contained
• G01N 29/04 - Analysing solids
• F16L 101/30 - Inspecting, measuring or testing

Abstract

A dry gas seal filter capable of automatically cutting off an airflow. The dry gas seal filter comprises: a shell (1) with a cavity, wherein the shell (1) is provided with an inlet end (11) and an outlet end (12); a filter element (2) arranged in the cavity, wherein the filter element (2) is provided with a first cavity (21) enclosed by a filter material, a second cavity (22) in communication with the outlet end (12) is formed between the filter element (2) and the shell (1), and a flow channel (13) is provided between the first cavity (21) and the inlet end (11); and a plugging mechanism arranged in the flow channel (13). The filter element (2) is provided with an unplugging piece (23); and the plugging mechanism has an unplugging state for cooperating with the unplugging piece (23) to allow an airflow to flow out of the flow channel (13), and a plugging state for preventing the airflow from flowing out of the flow channel (13).

IPC Classes  ?

• B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
• B01D 46/24 - Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
• B01D 46/46 - Auxiliary equipment or operation thereof controlling filtration automatic

Abstract

222 2222.

IPC Classes  ?

• C01B 32/40 - Carbon monoxide

Abstract

2242424222244, the high-CO-concentration synthesis gas is produced; and CO is extracted therefrom by means of pressure swing adsorption (PSA) at room temperature, which has good economic benefits.

IPC Classes  ?

• C10K 3/02 - Modifying the chemical composition of combustible gases containing carbon monoxide to produce an improved fuel, e.g. one of different calorific value, which may be free from carbon monoxide by catalytic treatment
• C01B 32/40 - Carbon monoxide

Abstract

A method and apparatus for evaluating volumes of discharged hydrocarbon and externally charged hydrocarbon in a mud shale. The method comprises: determining a hydrogen index and a current hydrocarbon generation potential parameter of a mud shale in target block based on total organic carbon test data and pyrolysis analysis test data of the mud shale; determining an original hydrogen index of the mud shale based on the hydrogen index and the pyrolysis analysis test data; and evaluating a volume of discharged hydrocarbon and a volume of externally charged hydrocarbon in the mud shale based on the current hydrocarbon generation potential parameter and the original hydrogen index.

IPC Classes  ?

• G01N 33/24 - Earth materials

Abstract

A trapping agent for a hydrocarbon gas. The trapping agent consists of a solid adsorbent and a composite solvent, wherein the solid adsorbent is a zeolitic imidazolate framework material, and the composite solvent comprises an organic solvent and water, with the organic solvent being selected from one or a combination of two or more of 1,3-dimethyl-2-imidazolinone, N,N-dimethylpropenyl urea, isoamyl alcohol, isohexanediol and dimethyl sulfoxide. Further disclosed is a method for separating a near-boiling-point gas by using the trapping agent.

IPC Classes  ?

• B01D 53/02 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography
• C10G 70/04 - Working-up undefined normally gaseous mixtures obtained by processes covered by groups , , , , by physical processes
• C10G 70/06 - Working-up undefined normally gaseous mixtures obtained by processes covered by groups , , , , by physical processes by gas-liquid contact
• B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption

Abstract

222422222222222 once by using PSA.

IPC Classes  ?

• C01B 3/48 - Production of hydrogen or of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents followed by reaction of water vapour with carbon monoxide
• C01B 3/40 - Production of hydrogen or of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts characterised by the catalyst
• C01B 3/56 - Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with solidsRegeneration of used solids

Abstract

The present application provides a method, a device, and a system of vibration reduction control on the installation of a deepwater drilling riser. The method includes: determining a lateral vibration displacement of each position of the riser at different times in an installation process according to a mechanical model of the deepwater drilling riser in the installation process, determining a stress generated by a lateral vibration of the riser in the installation process, determining a vibration reduction control speed applied to a bottom of the riser in the installation process according to the stress and the lateral vibration displacement of each position of the riser at different times in the installation process, and performing a vibration reduction control on the bottom of the riser based on the vibration reduction control speed.

IPC Classes  ?

• E21B 19/00 - Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrickApparatus for feeding the rods or cables
• E21B 19/16 - Connecting or disconnecting pipe couplings or joints

Abstract

This disclosure provides an experiment device for spudcan penetration and pullout of a jack-up rig, comprising an experiment bench and a spudcan leg, and further comprising: a ballasting tank; supporting wheels provided on the experiment bench; a suspension rope wound around the supporting wheels with two ends being connected respectively to the spudcan leg and the ballasting tank, wherein the ballasting tank has a first state of being seated on the spudcan leg and a second state of being separated from the spudcan leg and suspended under the suspension rope, by configuring the ballasting tank to have two different states, the gravity of the ballasting tank can be used as both the penetration force and the pullout force, and eliminating the need to provide two loading devices to apply the penetration pressure and the pullout force respectively.

IPC Classes  ?

• E02B 17/08 - Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering

Abstract

A 4D quantitative and intelligent diagnosis method for spatio-temporal evolution of oil-gas reservoir damage types and extent includes: determining a characteristic parameter characterizing reservoir damage by each of a plurality of factors based on a spatio-temporal evolution simulation equation of reservoir damage by each of the plurality of factors; and determining an effective characteristic parameter characterizing the damage extent of the reservoir based on the characteristic parameter characterizing reservoir damage by each of the plurality of factors. The method quantitatively simulate the characteristic parameters of reservoir damage caused by the various factors and a total characteristic parameter of the reservoir damage.

IPC Classes  ?

• G01N 11/00 - Investigating flow properties of materials, e.g. viscosity or plasticityAnalysing materials by determining flow properties
• E21B 47/00 - Survey of boreholes or wells
• E21B 43/20 - Displacing by water
• E21B 47/06 - Measuring temperature or pressure
• G01N 13/00 - Investigating surface or boundary effects, e.g. wetting powerInvestigating diffusion effectsAnalysing materials by determining surface, boundary, or diffusion effects
• G01N 15/08 - Investigating permeability, pore volume, or surface area of porous materials

Abstract

The present disclosure provides an edge and bottom water invasion simulation apparatus and method, a storage medium, and a product. A controller controls an inert gas to be injected into a first intermediate container, and stops the injection. The controller controls formation water to be injected into the first intermediate container, and stops the injection. The controller controls the first intermediate container to be communicated with a core holder, and adjusts a pressure of a back pressure valve, so that the formation water enters a core to simulate edge and bottom water invasion. In the present disclosure, by adding the inert gas and the formation water to the intermediate container, an infinite edge and bottom water with sufficient energy at an early stage of a water invasion and a limited edge and bottom water with lower energy at a later stage of the water invasion can be effectively simulated.

IPC Classes  ?

• E21B 49/00 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
• E21B 41/00 - Equipment or details not covered by groups
• G01N 33/24 - Earth materials
• G09B 25/02 - Models for purposes not provided for in group , e.g. full-sized devices for demonstration purposes of industrial processesModels for purposes not provided for in group , e.g. full-sized devices for demonstration purposes of machinery
• E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells
• E21B 47/00 - Survey of boreholes or wells
• G06F 30/20 - Design optimisation, verification or simulation
• G06F 111/10 - Numerical modelling

Abstract

A pipeline deformation internal detection method based on a magnetization technology, comprising: obtaining composite magnetic field information, a composite magnetic field being the vector sum of a magnetic field generated by a magnetic field generator and a magnetic field generated after the inner surface of a target pipeline is magnetized by the magnetic field generated by the magnetic field generator, and the magnetic field generator being located in the target pipeline (S101); determining a deformed area and an undeformed area in the target pipeline according to the composite magnetic field information (S102); and determining the deformation amount and the deformation inclination angle in the deformed area (S103). The detection does not involve a contact type detection probe, the phenomena of serious abrasion, scratching of the inner wall of a pipeline, and bouncing when a detection probe is far away from a defect area are avoided, and accuracy of a detection result of pipeline deformation is higher. Further provided is a pipeline deformation internal detection device based on the magnetization technology.

IPC Classes  ?

• G01B 7/24 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in magnetic properties
• G01N 27/83 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields

Abstract

The present invention relates to a linkage test apparatus for deepwater drilling riser and hang-off system. The linkage test apparatus includes a motion excitation system, a hang-off system and a riser system. The motion excitation system includes a six-degree-of-freedom excitation platform and sensors. The hang-off system includes a hydraulic cylinder actuating mechanism and a hydraulic system. The hydraulic cylinder in the hydraulic cylinder actuating mechanism is composed of an inner cylinder and an outer cylinder and it is fixed on the six-degree-of-freedom excitation platform by a spider. The inner cylinder of the hydraulic cylinder is hollow. A hang-off joint passes through the center of the inner cylinder, and a bottom of the hang-off joint is connected to the riser system via a rotating flange. The riser system is successively connected by multiple riser test joints, and the bottom is suspended with a lower marine riser package model.

IPC Classes  ?

• E21B 19/00 - Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrickApparatus for feeding the rods or cables
• E21B 47/007 - Measuring stresses in a pipe string or casing

Abstract

The present application provides a pipeline structural fault diagnosis apparatus and a diagnosis method. The pipeline structural fault diagnosis apparatus includes a signal generating apparatus configured to generate an acoustic wave signal by knocking a pipeline; a signal collecting apparatus configured to collect the acoustic wave signal; a signal storage apparatus configured to store the acoustic wave signal for a signal processing and analyzing apparatus to analyze and determine a fault type, a fault degree, and a fault position. The acoustic wave signal after being generated by the signal generating apparatus is collected by the signal collecting apparatus and stored in the signal storage apparatus. The signal processing and analyzing apparatus extracts the acoustic wave signal in the signal storage apparatus, and perfolins processing and analysis to determine the fault type, the fault degree, and the fault position of the pipeline structure.

IPC Classes  ?

• G01N 29/30 - Arrangements for calibrating or comparing, e.g. with standard objects
• G01N 29/14 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic wavesVisualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object using acoustic emission techniques

Abstract

22 as a catalytic conversion raw material, and producing synthesis gas by means of a catalytic conversion reaction, the synthesis gas being used for iron smelting, and electricity being used to provide energy for the catalytic conversion reaction. According to the present invention, under the circumstances that propane cannot be completely converted in some reaction conditions, catalytic dehydrogenation of propane is combined with steam cracking, and unconverted propane is prepared into methane, ethane, etc. by means of steam cracking; synthesis gas is further obtained by means of reforming and component adjustment, and the synthesis gas is a good raw material for direct reduction of iron.

IPC Classes  ?

• C21B 13/00 - Making spongy iron or liquid steel, by direct processes
• C01B 3/26 - Production of hydrogen or of gaseous mixtures containing hydrogen by decomposition of gaseous or liquid organic compounds of hydrocarbons using catalysts
• C01B 3/34 - Production of hydrogen or of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
• C01B 3/38 - Production of hydrogen or of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts
• C07C 11/00 - Acyclic unsaturated hydrocarbons

Abstract

The present invention provides a continental shelf profile determining method and apparatus based on non-delta transgression. The continental shelf profile determining method based on non-delta transgression comprises: establishing a continental shelf profile two-dimensional model according to the amount of sediments supplied by a river in a target work area and the rate of sea level rise; in a spatial rectangular coordinate system, solving the continental shelf profile two-dimensional model so as to generate a relational expression that can characterize a non-delta transgression slope and a river length; and determining the continental shelf profile of the target work area according to the relational expression. According to the continental shelf profile determining method and apparatus based on non-delta transgression provided by the present invention, the effects of river sediment supply and sea level rise on the continental shelf profile are comprehensively considered in a scenario of non-delta transgression, and thus, changes in the continental shelf profile of the target work area in historical periods are determined more accurately.

IPC Classes  ?

• G06F 30/20 - Design optimisation, verification or simulation

Abstract

A steam cracking method utilizing electricity for providing energy. According to the method, electricity is used to provide energy for a steam cracking reaction of a cracking raw material by means of electromagnetic induction. The cracking raw material comprises one or more combinations of naphtha, cycloalkane, and cycloolefin. The cycloalkane is a C4-C8 cycloalkane, and the cycloolefin is a C4-C8 cycloolefin. Electricity is used to provide energy for a steam cracking reaction by means of an electromagnetic coil, so that a new application can be provided for electricity, and the current problem of excessive electric power is solved. Moreover, the electromagnetic coil is used to provide energy, so that the distribution of heat in a furnace tube of a cracking furnace can be more uniform, and the reaction temperature and the reaction can be controlled more conveniently.

IPC Classes  ?

• B01J 6/00 - CalciningFusing
• B01J 4/00 - Feed devicesFeed or outlet control devices

Abstract

22 and then producing synthesis gas by means of a catalytic conversion reaction, the synthesis gas being used for producing sponge iron, wherein electricity is used to provide energy for the steam cracking reaction of the cracking feedstock containing low-carbon alkane. According to the invention, electricity is used to provide energy for the steam cracking reaction and the catalytic conversion reaction by means of an electromagnetic coil, so that a new use of electricity can be provided, thereby solving the existing problem of excess power. Moreover, providing energy using an electromagnetic coil can make the heat distribution of a reaction tube more uniform, thereby facilitating the control of a reaction temperature and advancement of a reaction.

IPC Classes  ?

• C21B 13/02 - Making spongy iron or liquid steel, by direct processes in shaft furnaces
• C07C 11/04 - Ethene
• C07C 11/06 - Propene

Abstract

A method, apparatus and system for calculating stress parameters is provided. The method comprises establishing a first image pyramid according to an image of a sample before deformation, and establishing a second image pyramid corresponding to the first image pyramid according to an image of the sample after deformation; starting from a top level in the first image pyramid, iteratively calculating displacement information on each level in the first image pyramid relative to a corresponding level in the second image pyramid based on a center point of each sub-region at each level in the first image pyramid and other positions in the sub-region; calculating strain information on the sample according to displacement information on a bottom level of the first image pyramid; and calculating stress parameters of the sample based on the strain information.

IPC Classes  ?

• G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
• G06T 7/00 - Image analysis
• G06T 7/70 - Determining position or orientation of objects or cameras
• G06V 10/74 - Image or video pattern matchingProximity measures in feature spaces
• G06V 10/75 - Organisation of the matching processes, e.g. simultaneous or sequential comparisons of image or video featuresCoarse-fine approaches, e.g. multi-scale approachesImage or video pattern matchingProximity measures in feature spaces using context analysisSelection of dictionaries
• G01M 11/08 - Testing mechanical properties
• G01B 11/16 - Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
• G01B 15/06 - Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons for measuring the deformation in a solid

Abstract

Disclosed is a method for performing integral plugging control on water invasion and steam channeling of an edge-bottom water heavy oil reservoir. The method for performing integral plugging control on water invasion and steam channeling of an edge-bottom water heavy oil reservoir comprises the following steps: (1) selecting an oil reservoir; (2) arranging a huff-puff well; (3) performing steam huff-puff development; and (4) performing integral plugging control. An integral plugging control technology is used for the method, a high-strength nitrogen foam system is injected by means of well rows at different positions in the oil reservoir, and effective plugging walls are formed at different positions from the edge-bottom water to reduce water invasion and steam channeling.

IPC Classes  ?

• E21B 43/24 - Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
• E21B 43/16 - Enhanced recovery methods for obtaining hydrocarbons

Abstract

The present disclosure provides a method for recovering a porosity evolution process of sequence stratigraphy of carbonate rocks. The method comprises: a step of establishing a sequence stratigraphic framework of carbonate rocks; a step of dividing diagenetic stages; a step of simulating diagenesis and porosity evolution with increasing reservoir thickness and continuous superposition of multiple reservoirs during cyclic rise and fall of sea level to obtain a simulation result; and a step of calculating the porosity evolution in space over time by using the simulation result as initial values for simulation of diagenetic evolution process and simulating in stages and continuity the multi-stage diagenetic evolution process that the carbonate rock strata undergo after sediment based on the divided diagenetic stages. Compared with the traditional recovery of single reservoir porosity with time evolution, the method fully considers the superposition effect of multiple upper reservoirs in the process of reservoir sedimentary-diagenesis.

IPC Classes  ?

• G01V 11/00 - Prospecting or detecting by methods combining techniques covered by two or more of main groups
• G01V 1/28 - Processing seismic data, e.g. for interpretation or for event detection
• G01V 1/30 - Analysis
• G01V 99/00 - Subject matter not provided for in other groups of this subclass
• G01N 15/08 - Investigating permeability, pore volume, or surface area of porous materials
• G01N 33/24 - Earth materials

Abstract

An experimental apparatus for simulating substance exchange between a wellbore and a formation. The experimental apparatus comprises: a wellbore simulation system, a wellbore liquid injection system, a formation simulation system, a formation fluid injection system, and a data acquisition system (1); the wellbore simulation system comprises a vertically arranged wellbore body (2) for simulating a wellbore; the formation simulation system comprises a horizontally arranged sealing body (3) for simulating a formation and a mortar filler filled in the sealing body (3); the wellbore liquid injection system is connected to the upper end of the wellbore body (2) so as to inject a wellbore liquid into the wellbore body (2); the formation fluid injection system is connected to one end of the sealing body (3) so as to inject a formation fluid into the sealing body (3); the other end of the sealing body (3) is communicated with the bottom of the wellbore body (2); and the data acquisition system (1) is electrically connected to the wellbore simulation system and the formation simulation system so as to acquire simulation data.

IPC Classes  ?

• E21B 47/10 - Locating fluid leaks, intrusions or movements

Abstract

The invention relates to the field of oilfield chemistry, and discloses a self-repairing plugging gel polymer for drilling fluid, a preparation method and application thereof, and the drilling fluid containing the gel polymer, wherein the polymer contains a structural unit A, a structural unit B, a structural unit C and a structural unit D, and the structural unit A is a structural unit with a structure shown in the formula (1); the structural unit B is a structural unit with a structure shown in the formula (2); the structural unit C is a structural unit with a structure shown in the formula (3); the structural unit D is a structural unit having a structure represented by the formula (4). The polymer provided by the invention has excellent mechanical properties and good self-repairing properties, and when the polymer is used as a plugging agent of water-based drilling fluid, the polymer has good plugging properties and high plugging layer repairing efficiency, and simultaneously has good high-temperature resistance.

IPC Classes  ?

• C09K 8/508 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds

Abstract

A coalescence filter element (300) having a liquid discharging function. The coalescence filter element comprises an inner coalescence component (1) for intercepting a large amount of liquid mixed in gas, and an outer coalescence component (2) for coalescing and filtering the remaining small amount of liquid in the gas. The inner coalescence component (1) and the outer coalescence component (2) are cylindrical structures provided in the vertical direction and having openings at the two ends; the outer coalescence component (2) is sleeved on the outer side of the inner coalescence component (1), and an annular liquid discharging space (3) is reserved between the inner coalescence component (1) and the outer coalescence component (2); the top end of the inner coalescence component (1) and the top end of the outer coalescence component (2) are provided with an upper end cover (4), the bottom end of the inner coalescence component (1) and the bottom end of the outer coalescence component (2) are provided with a lower end cover (5), and a gas inlet (503) communicated with the inner side of the inner coalescence component (1) is formed on the lower end cover (5).

IPC Classes  ?

• B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
• B01D 53/26 - Drying gases or vapours
• C10L 3/10 - Working-up natural gas or synthetic natural gas

Abstract

A switching-type two-stage coalescence separation system, comprising a coalescer housing (1), a plurality of two-stage filter elements (2) and a particle detector (5), wherein a lower portion and a upper portion of each two-stage filter element (2) are respectively located in a lower cavity (101) and an upper cavity (102) of the coalescer housing (1); two gas intake branch pipes are respectively in communication with the lower cavity (101) and the upper cavity (102); the two gas intake branch pipes are respectively connected into a gas intake main pipe (8); a first multi-way valve (6) is arranged at a position where the gas intake main pipe (8) and the two gas intake branch pipes are connected to each other; the particle detector (5) is arranged on the gas intake main pipe (8); two gas output branch pipes are respectively in communication with the lower cavity (101) and the upper cavity (102); the two gas output branch pipes are respectively connected into a gas output main pipe (13); and a second multi-way valve (7) is arranged at a position where the gas output main pipe (13) and the two gas output branch pipes are connected to each other.

IPC Classes  ?

• B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
• B01D 46/42 - Auxiliary equipment or operation thereof
• B01D 46/44 - Auxiliary equipment or operation thereof controlling filtration
• B01D 46/54 - Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
• C10L 3/10 - Working-up natural gas or synthetic natural gas

Abstract

A method for producing chemicals from crude oil by double-tube parallel multi-zone catalytic conversion is provided. The method may include the following steps: feeding the crude oil directly or separating the crude oil into light and heavy components by flash evaporation or distillation after desalination and dehydration; strengthening the contact and reaction between oil gas and catalyst by using two parallel reaction tubes with novel structure, controlling the reaction by zones, carrying out optimal combination on feeding modes according to different properties of reaction materials, controlling suitable reaction conditions for different materials, and increasing the production of light olefins and aromatics.

IPC Classes  ?

• C10G 51/02 - Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more cracking processes only plural serial stages only
• C10G 1/10 - Production of liquid hydrocarbon mixtures from oil shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal from rubber or rubber waste
• B01J 35/08 - Spheres
• C10G 1/00 - Production of liquid hydrocarbon mixtures from oil shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal

Abstract

A method and apparatus for determining content of adsorbed gas in a deep shale, and a server, wherein experimental tests are combined with molecular dynamics models. Firstly, tests are performed on a core sample of a target area at various temperatures in a first-class pressure environment with low pressure to obtain shale gas adsorption data of the core sample; next, a first shale molecule dynamics model of the core sample is established, and a fitting adjustment is performed on the first shale molecule dynamics model using the shale gas adsorption data to obtain a second shale molecule dynamics model. Further, the second shale molecular dynamics model is used to obtain, by analogue simulation, shale gas adsorption data of the core sample corresponding to the various temperatures in a second-class pressure environment with high pressure, so as to obtain an accurate and comprehensive adsorption characteristic curve in a full pressure range.

IPC Classes  ?

• G01N 7/04 - Analysing materials by measuring the pressure or volume of a gas or vapour by absorption, adsorption, or combustion of components and measurement of the change in pressure or volume of the remainder by absorption or adsorption alone
• G01N 33/24 - Earth materials

Abstract

A correction method for a microseism interpretation fracturing fracture parameter result. The method includes classifying the communication modes of a block sampling fractured wells to be corrected according to the matching degree of micro seismic monitoring result and sand adding amount; correcting the volume coefficient of each said classified fractured well single well, and the volume correction coefficient Bv of each said fractured well is: T is a theoretical calculation value obtained by using field construction parameters; C, calculating the classification volume correction coefficient of each class of fractured wells according to the calculated single well volume correction coefficient of each said fractured well. The micro seismic interpretation result can be corrected in combination with the field construction parameters, so that the micro seismic monitoring data can be utilized to truly interpret the effective fracture morphology after fracturing.

IPC Classes  ?

• G01V 1/30 - Analysis
• E21B 43/267 - Methods for stimulating production by forming crevices or fractures reinforcing fractures by propping
• E21B 49/00 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
• G06F 18/2431 - Multiple classes

Abstract

The invention relates to the technical field of oil and gas drilling, and discloses an amphiphilic block polymer ultralow-permeability agent and an intelligent temporary plugging type water-based drilling fluid. The ultralow-permeability agent contains a structural unit provided by styryl hydrophobic monomer, maleic anhydride and acrylamide; the drilling fluid contains two or more of water, sodium bentonite, Pac-Lv, the ultralow-permeability agent, calcium carbonate, one-way plugging agent, white asphalt and barite which are stored in a mixed manner or independently stored. When the amphiphilic block polymer provided by the invention is used as the ultralow-permeability agent of the intelligent temporary plugging type water-based drilling fluid, the self-adaptive characteristic is realized; according to the amphiphilic block polymer, temporary plugging layer gaps formed in pore and throats by plugging materials in drilling fluid can be fully filled under the condition that the sizes and the distribution of the pore and throats of reservoirs are not required to be clear, so that the permeability of temporary plugging layer is greatly reduced, ultralow-permeability is realized, and the amphiphilic block polymer is weak in tackifying effect, has gel-improving effect and can improve the rheological property of the drilling fluid.

IPC Classes  ?

• C09K 8/508 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds
• C08F 212/08 - Styrene
• C08F 222/08 - Maleic anhydride with vinyl aromatic monomers
• C08L 33/26 - Homopolymers or copolymers of acrylamide or methacrylamide
• C09K 8/512 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking agents

Abstract

Disclosed are a temporary plugging agent and a preparation method thereof, and a method for temporary plugging and fracturing of a high-temperature reservoir. The temporary plugging agent includes the following components in mass fractions: acrylamide 5%, composite crosslinking agent 1%, laponite 1%, ammonium persulfate 0.1% and water 92.9%.

IPC Classes  ?

• C09K 8/508 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds
• C09K 8/504 - Compositions based on water or polar solvents
• C09K 8/512 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking agents
• E21B 43/26 - Methods for stimulating production by forming crevices or fractures

Abstract

The present invention relates to the technical field of sand control for oil-gas wells. Disclosed is a screen pipe. The screen pipe comprises: a base pipe, first openings being formed in the side wall of the base pipe; a protective shell sleeved outside the base pipe, second openings being formed in the side wall of the protective shell, and an annular accommodating cavity being formed between the base pipe and the protective shell; and a pre-filled particle unit filled in the accommodating cavity, and comprising ceramsite and soluble particles which can be dissolved by contacting oil or water or an acid solution or an alkali solution or a salt solution or natural gas. According to the present application, the self-unblocking function can be achieved, thereby prolonging the high and stable production period of sand wells.

IPC Classes  ?

• E21B 43/08 - Screens or liners

Abstract

A nuclear magnetic resonance coil array and a decoupling method thereof, and a nuclear magnetic resonance detection device. The coil array includes: a coil resonant unit and a decoupling network unit, where the coil resonant unit includes multiple coil resonant circuits; the decoupling network unit includes multiple decoupling circuits; where a coil resonant circuit includes a coil and a resonant capacitor; the resonant capacitor in each coil resonant circuit is connected in parallel with the coil; the coils in each coil resonance circuit are equally spaced on a circumference; a decoupling circuit is provided between a positive terminal and a negative terminal of adjacent coils, respectively; each coil is connected to an antenna switching circuit of a nuclear magnetic resonance detection device at the same time.

IPC Classes  ?

• G01R 33/36 - Electrical details, e.g. matching or coupling of the coil to the receiver
• G01V 3/32 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for well-logging operating with electron or nuclear magnetic resonance
• G01R 33/34 - Constructional details, e.g. resonators

Abstract

A risk assessment-based design method for a deep complex formation wellbore structure includes: (1) preliminarily determining casing layers and setting depths; (2) calculating to obtain the risk coefficients of each layer of casing; (3) analyzing and coordinating, according to the principle that a shallow casing shares more risks and a deep casing shares less risks, the risks of each layer of casing: determining whether the risk coefficients of each layer of casing are greater than a safety threshold value K; checking the setting depth: if the safety coefficient of an ith-layer casing satisfies RNi>K, selecting a casing layer with the minimum safety coefficient from upper casing layers, and deepening the setting depth h of the casing layer; and (4) repeating the steps (2) to (3) until the casing risk coefficients of each layer of casing are less than the safety threshold value K.

IPC Classes  ?

• E21B 44/06 - Automatic control of the tool feed in response to the flow or pressure of the motive fluid of the drive
• E21B 47/06 - Measuring temperature or pressure
• E21B 47/007 - Measuring stresses in a pipe string or casing
• E21B 21/08 - Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure

Abstract

A dynamic fracture plugging evaluation experiment apparatus and an experiment method therefor. The dynamic fracture plugging evaluation experiment apparatus comprises a fracture simulation experiment instrument (1), a liquid storage container (3), a recovery tank (4), a hydraulic pump (5), a hand pump (6), a liquid weighing electronic scale (7), an inlet pressure gauge (8), an outlet pressure gauge (9), a first back pressure valve (10) and a second back pressure valve (400), the fracture simulation experiment instrument (1) being provided with a dynamic fracture simulation mechanism. The dynamic fracture plugging evaluation experiment apparatus can simulate a dynamic change process of the fractures from closing to opening, realize the simulation of the plugging process of the dynamic fractures, and monitor in real time and evaluate the plugging effect and plugging position in the dynamic fractures.

IPC Classes  ?

• E21B 33/13 - Methods or devices for cementing, for plugging holes, crevices or the like
• E21B 43/26 - Methods for stimulating production by forming crevices or fractures
• E21B 49/00 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells

Abstract

Disclosed is a high-viscosity oil exploitation method. The method is to inject high-temperature low-viscosity oil or a combination of high-temperature low-viscosity oil and gas into a high-viscosity oil reservoir for steam stimulation. The high-temperature low-viscosity oil or the combination of the high-temperature low-viscosity oil and gas reduces the viscosity of high-viscosity oil in the stratum by means of dissolution and heating, and increases the stratum pressure; the high-temperature low-viscosity oil comprises one or a combination of two or more of light fractions and intermediate fractions obtained by on-site distillation of the high-viscosity oil.

IPC Classes  ?

• E21B 43/16 - Enhanced recovery methods for obtaining hydrocarbons

Abstract

The present disclosure provides a mechanical property detection device and a force detection system, and relates to the technical field of hydrate experiment equipment. The mechanical property detection device includes a reaction kettle, a thrust mechanism, and a force detection sensor; a reaction platform and a reaction frame provided on the reaction platform are provided in the reaction kettle, an end of the thrust mechanism extends into the reaction kettle, and can push the reaction frame to move relative to the reaction platform, and the force detection sensor is configured to detect magnitude of a thrust of the thrust mechanism when pushing the reaction frame, so as to solve the technical problems such as inconvenience in testing an adhesive force of gas hydrate in the prior art.

IPC Classes  ?

• G01N 19/04 - Measuring adhesive force between materials, e.g. of sealing tape, of coating
• G01L 19/00 - Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
• G01N 1/34 - PurifyingCleaning
• G01N 1/42 - Low-temperature sample treatment, e.g. cryofixation
• G02B 21/06 - Means for illuminating specimen
• G02B 21/36 - Microscopes arranged for photographic purposes or projection purposes

Abstract

An experiment device for crack plugging simulation and experiment methods therefor. The experiment device comprises a main circulation circuit and a first branch (61), wherein the main circulation circuit comprises a plugging slurry tank (1), a stratum water tank (2), an upper circulation pipeline (3), a lower circulation pipeline (4), a crack plugging simulator (5) and a pulse electromagnetic valve (32). The experiment methods include an experiment method for simulating the eroding of cracks and crack surfaces by stratum water until the cracks are saturated, an experiment method for simulating the plugging of cracks using a dynamic plugging slurry with a constant pressure difference maintained between two sides of a plugging layer (100), an experiment method for simulating the eroding of a plugging layer (100) by a drilling fluid, and an experiment method for evaluating the plugging effect of the plugging slurry on plugging the cracks. Forward and reverse pressure-bearing tests and pressure-bearing capacity tests under alternating positive and negative pressures can be applied on a plugging layer (100) formed in a penetrating crack (51), and the plugging of the plugging slurry in a simulated drilling process and the continuous plugging capacity of the plugging layer (100) after plugging is completed are authentically evaluated, and thus, the plugging effect of plugging materials is evaluated.

IPC Classes  ?

• G01N 33/00 - Investigating or analysing materials by specific methods not covered by groups

Abstract

The present invention relates to the field of petroleum industry phase oilfield chemistry, and specifically relates to a bionic and dual-phobic drilling fluid. The drilling fluid contains a bionic wall-fixing agent, a bionic lubricant, a super dual-phobic agent, a scrap-carrying agent and a bionic shale inhibitor. The present invention uses the theory of bionics and the theory of a downhole rock surface being double phobic as a basis. By means of using the bionic wall-fixing agent, the bionic lubricant, the super dual-phobic agent, the scrap-carrying agent and the bionic shale inhibitor, which have special properties of imitating animals and plants in nature, and using a series of bionic treatment agents, a set of bionic and dual-phobic drilling fluid systems, which corresponds to an unconventional, complex oil and gas well, is formed.

IPC Classes  ?

• C09K 8/24 - Polymers

Abstract

The present invention relates to the field of an oil field exploration technology, and discloses a method for 4D quantitative and intelligent diagnosis of spatiotemporal evolution of the type and degree of damage to an oil and gas reservoir, and a system therefor. Said method comprises: on the basis of a spatiotemporal evolution simulation equation for a plurality of factors damaging a reservoir, determining feature parameters characterizing the plurality of factors damaging the reservoir respectively; and on the basis of the feature parameters characterizing the plurality of factors damaging the reservoir respectively, determining effective feature parameters characterizing the degree of damage to the reservoir. The present invention quantitatively simulates feature parameters of reservoir damage caused by various factors and a total feature parameter of the reservoir damage, thereby performing reservoir damage quantitative prediction and damage regular spatiotemporal evolution on wells without reservoir damage, and having scientific guidance significance for preventing reservoir damage, formulating a development scheme of oil reservoirs and subsequent stimulation measures, and performing reservoir damage quantitative diagnosis and damage regular spatiotemporal evolution on damaged wells, thereby optimally designing unplugging measures, and improving or restoring oil and gas well yield and water filling capacity of water wells.

IPC Classes  ?

• G06F 30/20 - Design optimisation, verification or simulation
• G16C 10/00 - Computational theoretical chemistry, i.e. ICT specially adapted for theoretical aspects of quantum chemistry, molecular mechanics, molecular dynamics or the like
• E21B 49/00 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
• G01N 15/08 - Investigating permeability, pore volume, or surface area of porous materials
• G01N 13/00 - Investigating surface or boundary effects, e.g. wetting powerInvestigating diffusion effectsAnalysing materials by determining surface, boundary, or diffusion effects
• G06F 113/08 - Fluids
• G06F 111/10 - Numerical modelling

Abstract

The present disclosure discloses a fluidized bed cooler with regional coordination enhancement, comprising a shell, a catalyst inlet, an interior of the shell is divided into a catalyst inlet influence region, a dilute phase region, a dense phase region and a gas distributor influence region; a catalyst inlet inclined tube is provided obliquely upward at the catalyst inlet, and a regional particle distributor is provided at the catalyst inlet; the dense phase region is provided with a plurality of dense phase baffle plates, and the dilute phase region is provided with a plurality of dilute phase baffle plates; and the gas distributor influence region is provided with double gas distributors. The fluidized bed cooler simultaneously well solves the low internal stability and the low heat exchange efficiency of the fluidized bed cooler, thereby realizing the stable and efficient operation of the fluidized bed cooler.

IPC Classes  ?

• B01J 8/00 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes
• B01J 8/18 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles
• B01J 19/00 - Chemical, physical or physico-chemical processes in generalTheir relevant apparatus
• B01J 19/24 - Stationary reactors without moving elements inside

Abstract

−6/° C. at 25° C. to 600° C.

IPC Classes  ?

• B01D 15/34 - Size-selective separation, e.g. size-exclusion chromatographyGel filtrationPermeation
• B01D 15/36 - Selective adsorption, e.g. chromatography characterised by the separation mechanism involving ionic interaction, e.g. ion-exchange, ion-pair, ion-suppression or ion-exclusion
• B01J 39/04 - Processes using organic exchangers
• B01J 39/20 - Macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
• B01J 39/26 - Cation exchangers for chromatographic processes
• B01J 41/04 - Processes using organic exchangers
• B01J 41/14 - Macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
• B01J 41/20 - Anion exchangers for chromatographic processes
• C10B 55/00 - Coking mineral oils, bitumen, tar or the like, or mixtures thereof, with solid carbonaceous materials
• C10B 57/02 - Multi-step carbonising or coking processes
• C10G 55/04 - Treatment of hydrocarbon oils, in the absence of hydrogen, by at least one refining process and at least one cracking process plural serial stages only including at least one thermal cracking step
• H05B 7/06 - Electrodes

Abstract

Disclosed is an experimental device for the real-time monitoring of the sealing integrity of a cement sheath for well cementation, the device comprising a fixing device (1), a well bore device (2) and a cement slurry injection system (3), wherein the bottom end of an inner casing (22) and the bottom end of an outer barrel (21) are both fixed within a base (12); a cavity between an inner wall of the outer barrel (21) and an outer wall of the inner casing (22) forms a cement sheath cavity (24); an optical fiber sensing cable (23) is arranged on the outer wall of the inner casing (22); a cement slurry storage device (31) is in communication with the cement sheath cavity (24) via a cement slurry injection pipe (32); and a cement slurry injection pump (33) is provided on the cement slurry injection pipe (32). The experimental device for the real-time monitoring of the sealing integrity of a cement sheath for well cementation achieves the real-time continuous monitoring, in a whole well section, of the sealing integrity of a cement sheath for well cementation, with precise and reliable measured values. For different experiments for monitoring of the sealing integrity of a cement sheath, it is only necessary to replace same with outer barrels having different functions for simulating strata and pipelines, and corresponding injection systems, which greatly reduces the experiment cost.

IPC Classes  ?

• E21B 47/005 - Monitoring or checking of cementation quality or level

Abstract

A distillate super/subcritical fluid enhanced hydrogenation method, comprising: preheating a mixture of a distillate raw material, a solvent and hydrogen, then introducing the mixture into a first-stage fixed bed reactor, carrying out first-stage catalytic hydrogenation in a supercritical or subcritical fluid state, separating a reaction effluent, collecting a hydrogenated oil product therein and obtaining a hydrogen-containing gas and a solvent-containing light fraction; and returning the solvent-containing light fraction to the first-stage fixed bed reactor for recycling. The method improves the solubility and diffusion mass transfer performance of hydrogen in a distillate hydrogenation reaction system, and improves the hydrogenation reaction efficiency of the distillate.

IPC Classes  ?

• C10G 45/22 - Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbonsHydrofinishing with hydrogen dissolved or suspended in the oil
• C10G 45/44 - Hydrogenation of the aromatic hydrocarbons
• C10G 3/00 - Production of liquid hydrocarbon mixtures from oxygen-containing organic materials, e.g. fatty oils, fatty acids
• C07C 1/00 - Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon

Abstract

A hydrate-containing stratum heating settlement simulation experiment device and method, the device comprising: a reaction container (1) configured having a reaction cavity (101); a pressurizing assembly (2) and a temperature control assembly (3) which are connected to the reaction container (1) and used for regulating the pressure and temperature in the reaction cavity (101) respectively; a confining pressure assembly (4) surrounding the sidewall of the reaction container (1) and used for adjusting the confining pressure in the reaction cavity (101); an electric heating pipe (5), vertically arranged at the bottom of the reaction cavity (101) and extending upward to be inserted into hydrate, wherein the electric heating pipe is provided with a hollow channel, and meshes communicating with the hollow channel are formed in the side wall thereof; a collecting and measuring device (6), communicating with the electric heating pipe (5) and used for collecting and measuring the amount of gas, liquid and solid generated after the hydrate melts; and a control module, connected to the pressurizing assembly (2), the temperature control assembly (3), the confining pressure assembly (4) and the collecting and measuring device (6). The hydrate-containing stratum heating settlement simulation experiment device and the method may acquire the change rule of the amount of the hydrate decomposing gas, liquid and solid and the stratum settlement amount within different heating ranges and under different heating temperature conditions.

IPC Classes  ?

• E21B 49/00 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
• E21B 43/24 - Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
• E21B 43/295 - Gasification of minerals, e.g. for producing mixtures of combustible gases
• G01N 33/24 - Earth materials

Abstract

A permafrost formation thawing and subsidence test simulation device and a method. The device comprises: a reaction container (1) provided with a reaction cavity (101); a pressurization assembly (2) and a temperature control assembly (3) connected to the reaction container (1); a confining pressure assembly (4) surrounding a sidewall of the reaction container (1); a simulation conduit system (5) comprising a conduit (501) provided within the reaction cavity (101), and a drilling rod (502) passing through the conduit (501), wherein an annular space (503) is formed between the drilling rod (502) and the conduit (501); a drilling fluid circulation system (6) comprising a drilling fluid storage tank (601), a fluid inlet pipeline (602) communicated with the conduit (501), a fluid return pipeline (603) communicated with the annular space (503), a heating device (604) provided on the fluid inlet pipeline (602), a pressurization pump (605), a switch valve (606), and a filter device (608) provided on the fluid return pipeline (603); a measurement acquisition device (7) communicated with the reaction cavity (101); and a control module connected to the pressurization assembly (2), the temperature control assembly (3), the switch valve (606), and the measurement acquisition device (7). The device can obtain a change pattern of thawing water discharge amounts and formation subsidence amounts in different heating ranges and different heating temperature conditions.

IPC Classes  ?

• G01N 33/24 - Earth materials
• G01N 25/02 - Investigating or analysing materials by the use of thermal means by investigating changes of state or changes of phaseInvestigating or analysing materials by the use of thermal means by investigating sintering
• G09B 25/06 - Models for purposes not provided for in group , e.g. full-sized devices for demonstration purposes for surveyingModels for purposes not provided for in group , e.g. full-sized devices for demonstration purposes for geography, e.g. relief models

Abstract

The embodiments of the invention provide an intelligent prediction method and apparatus for reservoir sensitivity, belonging to the technical field of reservoir sensitivity prediction. The method includes: acquiring a reservoir sensitivity influence factor item related to a reservoir sensitivity result to be predicted and numerical values of corresponding reservoir sensitivity influence factors; determining a corresponding type of database according to the reservoir sensitivity influence factor item; determining whether numerical values of reservoir sensitivity influence factors corresponding to core parameters in the numerical values of the reservoir sensitivity influence factors include a first upper boundary value or a first lower boundary value; and using, according to whether the first upper boundary value or the first lower boundary value is included, different intelligent sensitivity prediction models to calculate the reservoir sensitivity result to be predicted.

IPC Classes  ?

• G06N 3/08 - Learning methods
• G01V 99/00 - Subject matter not provided for in other groups of this subclass
• E21B 49/08 - Obtaining fluid samples or testing fluids, in boreholes or wells
• E21B 49/00 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
• E21B 47/003 - Determining well or borehole volumes
• G06N 3/04 - Architecture, e.g. interconnection topology
• G06Q 10/04 - Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
• G06Q 50/02 - AgricultureFishingForestryMining
• G01V 1/28 - Processing seismic data, e.g. for interpretation or for event detection
• G06Q 10/06 - Resources, workflows, human or project managementEnterprise or organisation planningEnterprise or organisation modelling
• E21B 43/00 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
• G06F 7/60 - Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radixComputing devices using combinations of denominational and non-denominational quantity representations
• E21B 43/16 - Enhanced recovery methods for obtaining hydrocarbons
• E21B 41/00 - Equipment or details not covered by groups

Abstract

The present disclosure relates to the technical field of artificial cores, in particular to a preparation method of artificial sandstone and/or conglomerate core based on lithology and pore structure control. The method comprises the following steps: mixing and molding sand particles and a inorganic cementing agent in sequence, and further adding a curing agent for performing solidification to prepare an artificial sandstone and/or conglomerate core; wherein composition of the sand particles is determined according to lithology and pore structure of the artificial sandstone and/or conglomerate core. The present disclosure combines the lithology and the pore structure of the artificial sandstone and/or conglomerate core with the composition of the sand particles, particularly regulates and controls the composition of the sand particles according to the pore throat distribution pattern and the average pore throat radius, thereby performing precise control on the artificial sandstone and/or conglomerate core.

IPC Classes  ?

• C04B 14/06 - QuartzSand
• C09K 8/467 - Compositions for cementing, e.g. for cementing casings into boreholesCompositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
• C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates

Abstract

A combined remediation method of petroleum-contaminated soil includes: impurity removal pretreatment, photocatalytic pre-oxidation, stepwise thermal desorption of petroleum from soil, and high-temperature oxidation; with iron-titanium composite metal oxide (ITCMO) as a catalyst, conducting oxidation pretreatment under light conditions so that some cross-linked structures in macromolecular petroleum contaminants are broken and degraded; and conducting stepwise pyrolysis to achieve a removal rate of more than 98.00%. The new method adopts a combined remediation technology of photocatalytic pre-oxidation-stepwise pyrolysis, which realizes a relatively-high removal rate of petroleum hydrocarbons and the efficient and harmless remediation of high-concentration petroleum-contaminated soil, and remedied soil can be reused.

IPC Classes  ?

• B09C 1/00 - Reclamation of contaminated soil
• B01J 23/745 - Iron
• B01J 35/00 - Catalysts, in general, characterised by their form or physical properties
• B01J 37/04 - Mixing
• B01J 37/06 - Washing
• B01J 37/08 - Heat treatment
• B09C 1/06 - Reclamation of contaminated soil thermally
• B09C 1/08 - Reclamation of contaminated soil chemically
• C01G 49/00 - Compounds of iron

Abstract

3 and an acidic molecular sieve by a binder and calcining. When the bifunctional catalyst provided by the present application is used for hydrodesulfurization of gasolines, deep desulfurization, olefin reduction and octane number preservation can be realized simultaneously, thereby obtaining a high-quality oil product.

IPC Classes  ?

• B01J 29/40 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11
• B01J 21/04 - Alumina
• B01J 23/10 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of rare earths
• B01J 29/70 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of types characterised by their specific structure not provided for in groups
• B01J 35/00 - Catalysts, in general, characterised by their form or physical properties
• B01J 37/02 - Impregnation, coating or precipitation
• B01J 37/04 - Mixing
• B01J 37/08 - Heat treatment
• C10G 45/12 - Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbonsHydrofinishing characterised by the catalyst used containing crystalline alumino-silicates, e.g. molecular sieves

Abstract

3 and an acid molecular sieve through a binder, and then modifying with the rare earth element. The bifunctional catalyst for deep desulfurization and gasoline quality improvement can achieve deep desulfurization of high-sulfur fluid catalytic cracking gasoline, and ensure no significant loss of octane number under relatively mild conditions.

IPC Classes  ?

• B01J 29/40 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11
• B01J 21/04 - Alumina
• B01J 23/10 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of rare earths
• B01J 29/70 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of types characterised by their specific structure not provided for in groups
• B01J 35/00 - Catalysts, in general, characterised by their form or physical properties
• B01J 37/02 - Impregnation, coating or precipitation
• B01J 37/04 - Mixing
• B01J 37/08 - Heat treatment
• C10G 45/12 - Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbonsHydrofinishing characterised by the catalyst used containing crystalline alumino-silicates, e.g. molecular sieves

Abstract

The invention relates to the field of drilling fluid, in particular to a saturated salt water drilling fluid of salt response type intelligent polymer and preparation method thereof. The drilling fluid contains two or more of the following components stored in admixture or separately: bentonite, NaOH, KCl, calcium carbonate, barite, NaCl, supramolecular fluid loss additive, supramolecular shear-enhancing agent, plugging agent, coating agent and water. The drilling fluid provided by the invention has the characteristics of salt response and self-assembly, can keep rheological properties such as rapid recovery of the sheared structure, low extreme high shear rate viscosity, good shear dilution property and the like in a high-salt environment, has good fluid loss reduction performance, reservoir protection performance and debris dispersion inhibition performance, and has good temperature resistance and pollution resistance performance.

IPC Classes  ?

• C09K 8/24 - Polymers
• C09K 8/14 - Clay-containing compositions
• C09K 8/16 - Clay-containing compositions characterised by the inorganic compounds other than clay

Abstract

A composite nitrogen huff and puff method for a bounded fault block reservoir comprises: selecting the reservoir to be developed, wherein the reservoir to which the development method is applicable is roughly screened according to the following conditions: the reservoir is a bounded fault block reservoir, buried depth<5000 m, residual oil saturation>0.5, reservoir thickness>10 m, horizontal permeability>100 mD, vertical permeability to horizontal permeability ratio>0.35, reservoir porosity>0.20, and stratigraphic dip>8°; and sequentially performing the following huff and puff phases: a nitrogen huff and puff phase, a nitrogen and water composite huff and puff phase, a nitrogen and foaming agent composite huff and puff phase, and a nitrogen and carbon dioxide composite huff and puff phase.

IPC Classes  ?

• E21B 43/16 - Enhanced recovery methods for obtaining hydrocarbons

Abstract

2 enrichment unit comprises an air separating enrichment unit and a boiler injection gas premixed tank; the air separating enrichment unit comprises an air separating primary device used for separating air into oxygen and nitrogen preliminarily, and an air separating secondary device used for further enriching a part of the oxygen which is subjected to the preliminary separation; and the boiler injection gas premixed tank is used for mixing the preliminarily separated nitrogen, the preliminarily separated part of the oxygen and/or the further enriched oxygen.

IPC Classes  ?

• E21B 43/16 - Enhanced recovery methods for obtaining hydrocarbons
• E21B 43/40 - Separation associated with re-injection of separated materials
• E21B 41/00 - Equipment or details not covered by groups

Abstract

Preparation methods of a high modulus carbon fiber (HMCF) and a precursor (mesophase pitch (MP)) thereof are provided. The preparation method of MP includes: separating components with a molecular weight distribution (MWD) of 400 to 1,000 from a heavy oil raw material through size-exclusion chromatography (SEC); subjecting the components to ion-exchange chromatography (IEC) to obtain modified feedstock oil, where, the components are passed through macroporous cation-exchange and anion-exchange resins in sequence to remove acidic and alkaline components; and subjecting the modified feedstock oil to thermal polycondensation and carbonization to obtain high-quality MP with prominent spinnability. With high mesophase content, low softening point, low viscosity, and prominent meltability and spinnability, the obtained MP is a high-quality raw material for preparing HMCFs. The obtained MP can be subjected to melt spinning, pre-oxidation, carbonization, and graphitization to obtain an MP-based HMCF.

IPC Classes  ?

• B01D 15/34 - Size-selective separation, e.g. size-exclusion chromatographyGel filtrationPermeation
• B01D 15/36 - Selective adsorption, e.g. chromatography characterised by the separation mechanism involving ionic interaction, e.g. ion-exchange, ion-pair, ion-suppression or ion-exclusion
• B01J 20/26 - Synthetic macromolecular compounds
• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
• D01F 9/15 - Carbon filamentsApparatus specially adapted for the manufacture thereof by decomposition of organic filaments from pitch or distillation residues from coal pitch
• D01F 9/155 - Carbon filamentsApparatus specially adapted for the manufacture thereof by decomposition of organic filaments from pitch or distillation residues from petroleum pitch
• C10C 3/08 - Working-up pitch, asphalt, bitumen by selective extraction
• B01D 15/18 - Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to flow patterns

Abstract

The present disclosure relates to the technical field of artificial cores, in particular to a preparation method of artificial sandstone and/or conglomerate core based on lithology and permeability control. The method comprises the following steps: mixing and molding sand particles and a cementing agent in sequence, and further adding a curing agent for performing solidification to prepare the artificial sandstone and/or conglomerate core; wherein composition of the sand particles is determined according to properties of the artificial sandstone and/or conglomerate core comprising lithology and permeability. The present disclosure combines the properties of the artificial sandstone and/or conglomerate core with the proportion of the sand particles, particularly regulates and controls the composition of the sand particles according to the lithology and permeability of the artificial sandstone and/or conglomerate core, thereby performing precise control on the artificial sandstone and/or conglomerate core.

IPC Classes  ?

• C04B 14/06 - QuartzSand
• C09K 8/467 - Compositions for cementing, e.g. for cementing casings into boreholesCompositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
• C04B 28/04 - Portland cements

Abstract

The attenuation material composition disclosed in the present disclosure comprises a room temperature vulcanized silicone rubber, an epoxy resin, a first curing agent and a second curing agent, wherein the first curing agent comprises ethyl orthosilicate and dibutyltin oxide; and the weight ratio of the room temperature vulcanized silicone rubber to the epoxy resin is (0.1-1):1.

IPC Classes  ?

• C08L 83/04 - Polysiloxanes
• C08L 63/00 - Compositions of epoxy resinsCompositions of derivatives of epoxy resins
• G09B 23/40 - Models for scientific, medical, or mathematical purposes, e.g. full-sized device for demonstration purposes for geology

Abstract

The present invention belongs to the field of geophysical exploration, and discloses physical seismic simulation test apparatus and method based on reflected wave field for a hydrate formation. The apparatus comprises a hydrate preparation device and a reflected acoustic wave test device, wherein the hydrate preparation device is configured to generate simulated hydrates, and the reflected acoustic wave test device is configured to continuously emit ultrasonic waves to the simulated hydrates in the generation process, process the received reflected waves to identify and extract reflection characteristic information and acoustic wave velocity change information, and continuously monitor the degree of saturation of the simulated hydrates at the same time to obtain a corresponding relationship between the reflection characteristic information and acoustic wave velocity change information and the degree of saturation of the simulated hydrates. The apparatus and method provided by the present invention obtain the reflection characteristics of a hydrate formation and acoustic wave velocity change by acquiring the reflected wave field of the hydrate formation, thereby obtain the relationship with the degree of saturation of the hydrates, and have important guiding significance for interpretation of the offshore seismic exploration data of natural gas hydrates and estimation of the degree of saturation of natural gas hydrates.

IPC Classes  ?

• G01V 1/30 - Analysis
• G01V 1/28 - Processing seismic data, e.g. for interpretation or for event detection

Abstract

An acoustic wave testing device for a shallow water flow comprises: a reactor (1) provided with a testing chamber (2), wherein a side surface of the reactor extending in a length direction is capable of applying a confining pressure to the testing chamber (2); an acoustic wave testing component provided within the testing chamber (2) and comprising a transmission member (3) and a receiving member (4), wherein a line connecting the transmission member (3) and the receiving member is perpendicular to the length direction; a temperature and pressure testing component (5) provided within the testing chamber (2); a pushing force component (6) provided at an end of the reactor (1) extending in the length direction, at least a portion of the pushing force component (6) extending into the testing chamber (2); a liquid injection component (7) communicated with the testing chamber (2); and a control portion (8) electrically connected to the transmission member (3), the receiving member (4), the temperature and pressure testing component (5), the pushing force component (6), and the liquid injection component (7), and used to acquire acoustic wave information transmitted by the transmission member (3), acoustic wave information received by the receiving member (4), and pressure and temperature information acquired by the temperature and pressure testing component (5). The acoustic wave testing device for a shallow water flow is capable of testing acoustic responses of a shallow water flow under different pressure changes, and facilitates studying an impact pattern of the shallow water flow on acoustic features.

IPC Classes  ?

• G01N 29/02 - Analysing fluids
• G01N 29/22 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic wavesVisualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object Details

Abstract

The invention discloses a calcium-resistant zwitterionic polymer, a preparation method and an application thereof, and a water-based drilling fluid containing the polymer as a dispersing agent, wherein the polymer contains a structural unit A, a structural unit B and a structural unit C, and the structural unit A is at least one selected from the group consisting of structural units with a structure shown in a formula (11), a structure shown in a formula (12) and a structure shown in a formula (13); the structural unit B is a structural unit with a structure shown in a formula (2); the structural unit C is at least one selected from the group consisting of structural units having a structure represented by formula (31) and a structure represented by formula (32); the weight-average molecular weight of the polymer is 350,000 to 600,000.

IPC Classes  ?

• C09K 8/24 - Polymers
• C08F 220/58 - Amides containing oxygen in addition to the carbonamido oxygen
• C08F 228/02 - Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a bond to sulfur or by a heterocyclic ring containing sulfur by a bond to sulfur
• C08F 212/14 - Monomers containing only one unsaturated aliphatic radical containing one ring substituted by hetero atoms or groups containing hetero atoms

Abstract

A gas-liquid separation device comprises: an outer housing extending vertically, which is provided with a gas outlet at an upper end of the outer housing and a liquid outlet at a lower end of the outer housing; an inner housing disposed in the outer housing and extending vertically, an upper end of the inner housing being coupled to the outer housing in a sealed manner, a lower end of the inner housing being opened, with an annular space formed between the outer housing and the inner housing; a feeding tube inserted into the outer housing and communicated with the inner housing, with a cyclone mechanism between the feeding tube and the inner housing to output fluid into the inner housing as a swirling flow. The present disclosure can reduce the disturbance of the downward gas flow and the upward gas flow in the separation space, thus improving the separation efficiency.

IPC Classes  ?

• B01D 45/12 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
• B01D 45/16 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream
• B01D 45/08 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
• B01D 45/02 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
• B01D 45/06 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by reversal of direction of flow
• B01D 19/00 - Degasification of liquids
• B01D 53/24 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by centrifugal force
• B01D 53/26 - Drying gases or vapours

Abstract

The present invention provides a self-suspension hydraulic fracturing coated proppant having a targeting function, and preparation and an application. The proppant comprises: A) particles existing in an amount of 70-99.99% of the total weight of the proppant, and B) a nanometer particle enhanced porous composite material coating with which the surfaces of the particles are coated, and existing in an amount of 0.01-30% of the total weight of the proppant, wherein nanometer particle enhanced porous composite materials comprise nanometer particles (preferably, the weight of the nanometer particles is 1-50% (preferably, 10-20%) of the total weight of the nanometer particle enhanced porous composite material coating) and a porous composite material. Compared with a functional coated proppant produced by means of a traditional process, the materials such as resin used in the present method are derived from industrial production, the nanometer particles are creatively added to improve the performance of the proppant, and the method has a more simplified operation process and a lower production cost.

IPC Classes  ?

• C09K 8/80 - Compositions for reinforcing fractures, e.g. compositions of proppants used to keep the fractures open

Abstract

A preparation method of an ionic liquid shale inhibitor for drilling fluid comprises the following step: subjecting the imidazole-based ionic liquid to a polymerization reaction in water environment under an inert atmosphere, and the produced polymer is used as an ionic liquid shale inhibitor for drilling fluid. The ionic liquid shale inhibitor for drilling fluid has the advantages of desirable inhibition effect, good compatibility, strong high-temperature resistance, simple preparation method and low cost.

IPC Classes  ?

• C09K 8/035 - Organic additives
• C08F 26/06 - Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen by a heterocyclic ring containing nitrogen