The present disclosure provides a ground object segmentation method based on a residual module and an attention mechanism, and a related apparatus, and relates to the field of remote sensing (RS) ground object segmentation technologies. The method includes the following steps: obtaining a to-be-segmented RS image; and inputting the to-be-segmented RS image into a trained ground object segmentation model to obtain a ground object segmentation result, where the ground object segmentation model is a network model obtained based on a U-Net neural network and with reference to the residual module and an attention module. In the present disclosure, a U-Net model with reference to a residual network structure and the attention mechanism is used.
G06V 10/26 - Segmentation of patterns in the image fieldCutting or merging of image elements to establish the pattern region, e.g. clustering-based techniquesDetection of occlusion
G06V 10/774 - Generating sets of training patternsBootstrap methods, e.g. bagging or boosting
An unmanned aerial vehicle (UAV)-based zonal spraying device and method for ecological restoration is provided. The UAV-based zonal spraying device for ecological restoration includes a UAV body. Bottom ends of two sides of the UAV body are respectively provided with support legs. The UAV body includes a scanning mechanism, a spraying mechanism, and a nozzle mechanism. The spraying device can identify geological characteristics, acquire ecological geological environment data, determine different restoration zones according to terrain characteristics, select different treatment approaches, and load different slurries to achieve zonal ecological restoration for different types of geological disasters. In this way, the UAV-based zonal spraying device and method greatly improves the treatment efficiency and effectiveness for disaster recovery.
B05B 3/18 - Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with elements moving in a straight line, e.g. along a trackMobile sprinklers
B64U 20/87 - Mounting of imaging devices, e.g. mounting of gimbals
B64U 101/45 - UAVs specially adapted for particular uses or applications for releasing liquids or powders in-flight, e.g. crop-dusting
Institute of Mountain Hazzards and Environment, Chinese Academy of Sciences (China)
Inventor
Luo, Yong
Yu, Hui
Chen, Dianpeng
Abstract
A method for identifying an optimal corridor width includes: acquiring geographic information data of a target region; evaluating ecosystem service functions of the target region, and constructing an ecological source land in combination with a nature reserve; constructing a resistance surface indicator system, and obtaining a disaster susceptibility distribution result by using geological disaster distribution point data to correct a resistance surface, to thereby obtain a real resistance surface; importing data of the ecological source land and data of the real resistance surface into LINKAGE MAPPER to generate an ecological corridor; constructing an evaluation system of the optimal corridor width based on three aspects of cost-function-ecological benefits, and evaluating the ecological corridor by using an IEW-TOPSIS model to obtain the optimal corridor width of the ecological corridor. The method can compare and identify the corridor width most suitable for construction, and provide reference base for corridor construction.
The present application relates to the field of satellite navigation systems. Disclosed is a real-time sliding ultra-short-term forecasting model algorithm based on frequency data and phase data, the algorithm comprising the following steps: S1, converting clock error phase data into frequency data; S2, using a frequency abnormality detection function to process the frequency data, so as to eliminate an abnormal value, wherein the frequency abnormality detection function determines, on the basis of the standard deviation and threshold of the frequency data, whether the frequency data is an abnormal point; and S3, performing real-time sliding clock error forecasting, and using fitting phase data and a threshold range to eliminate the abnormal value and update a forecasting epoch. In the present invention, the elimination of an abnormal value from clock data and the calculation of a clock error prediction value are linked, so that the detection and elimination of the abnormal value from the clock data are rolled out in real time; and the calculation of a real-time clock error prediction value is performed, so that a clock frequency deviation is corrected. The present invention can improve the accuracy, real-time performance and data stability of forecasting, and is flexible and applicable to various types of satellite orbits.
The present application relates to the field of satellite navigation systems, and discloses a real-time sliding ultrashort-term forecast model algorithm based on frequency data and phase data. The real-time sliding ultrashort-term forecast model algorithm based on frequency data and phase data includes: S1, converting clock error phase data into the frequency data; S2, processing the frequency data through a frequency anomaly detection function, and eliminating an abnormal value, where the frequency anomaly detection function determines whether the frequency data is an outlier according to a standard deviation and a threshold of the frequency data; and S3, performing a real-time sliding clock error forecast, and eliminating the abnormal value and updating a forecast epoch by using fitted phase data and a threshold range.
The present disclosure provides an object-oriented method for identifying and classifying surface lithology in a hyperspectral remote sensing image. The method includes: determining a hyperspectral remote sensing image in a research area and a lithology type label corresponding to each hyperspectral remote sensing image, and preparing a hyperspectral remote sensing dataset; dividing pixels of the hyperspectral remote sensing image in the hyperspectral remote sensing dataset into a training set and a test set through a division strategy for a dataset without leakage information; and based on a deep learning method, extracting and fusing, through a double-branch multi-scale dual-attention mechanism network based on the training set and the test set, a spectral feature and a spatial feature of a hyperspectral remote sensing image to be tested, to generate a fused feature for representing a surface lithology type of the hyperspectral remote sensing image to be tested.
G06V 10/24 - Aligning, centring, orientation detection or correction of the image
G06V 10/58 - Extraction of image or video features relating to hyperspectral data
G06V 10/764 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using classification, e.g. of video objects
G06V 10/77 - Processing image or video features in feature spacesArrangements for image or video recognition or understanding using pattern recognition or machine learning using data integration or data reduction, e.g. principal component analysis [PCA] or independent component analysis [ICA] or self-organising maps [SOM]Blind source separation
G06V 10/774 - Generating sets of training patternsBootstrap methods, e.g. bagging or boosting
G06V 10/80 - Fusion, i.e. combining data from various sources at the sensor level, preprocessing level, feature extraction level or classification level
G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks
Disclosed is a method for preparing a composite bioactive inorganic silicate hydrogel-based wound dressing, which relates to the field of biomedical materials. The method specifically comprises: dissolving polyvinyl alcohol in ionized water, heating, and stirring; separately dissolving sodium alginate and gelatin in the above solution, heating, mixing the solution with a bioactive inorganic silicate; injecting the mixture into a mold, separately adding calcium chloride and glutaraldehyde, and incubating in deionized water overnight; and finally lyophilizing to give the composite bioactive inorganic silicate hydrogel-based wound dressing. The method of the present invention features ease-to-operate, low requirements on reaction conditions, and thus suitability for mass production. The prepared composite bioactive inorganic silicate hydrogel-based wound dressing possesses the capability of absorbing exudates and keeping a humid environment and enhanced interaction with tissues, thereby promoting angiogenesis and the proliferation and migration of L929 fibroblasts. The present invention effectively solves the problem of the limited bionic performance of the scaffold of a skin dressing prepared from a single material.
z); and simulating the collision, fragmentation, and movement processes of the rock mass. Based on the rock mass fragmentation model, whether the rock mass fragmentation occurs or not can be determined. Then, the trajectory of each fragmented block can be simulated using the energy distribution model and fragmented block trajectory model.
A method for identifying similar ground objects with spectral similarity in a remote sensing image based on condition number of matrix includes the steps of: obtaining sample's spectral curve of the ground object to be identified, and constructing the sample spectrum matrix A according to the number of bands of the image and the number of categories of ground objects; sequentially obtaining distance index vectors between the spectrum P of the pixel to be identified and each category of ground objects in A; calculating a distance error of each type of ground object when P is identified; then calculating a distance error threshold vector of A; classifying and identifying the pixels. This method uses linear system of equations and the condition number theory to transform ill-conditioned equations into well-conditioned equations, thereby adding significant identifiable features to the ground objects to improve the identification performance and avoid constructing large training samples.
The present invention discloses a support mechanism of a self-adaptive traction robot for a complex wellbore and a control method thereof, and relates to the technical field of oil and gas field development. Each support link assembly in a support mechanism is controlled by an independent hydraulic cylinder and hydraulic valve. When a well wall that each support link assembly contacts in a circumferential direction is irregular, the support mechanism contact effect is not ideal, which leads to a decrease in traction force. In this case, a displacement sensor in a telescopic mechanism detects that a displacement of a traction cylinder piston is small, which is fed back to a ground control system, and then a fluid inflow size of support cylinders corresponding to different support link assemblies is adjusted until the displacement sensor in the telescopic mechanism detects an effective traction distance.
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
E21B 23/03 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for setting the tools into, or removing the tools from, laterally offset landing nipples or pockets
E21B 23/04 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion
The present invention belongs to the technical field of petroleum and natural gas exploration and development, and specifically relates to a study method for chlorite growth pattern based on an in-situ high-precision observation means. The method includes: S1: selecting a sample and quantitatively characterizing mineral components; S11: selecting a typical sandstone sample developed with a chlorite coating and cement, grinding a rock slice, and observing under a microscope and a scanning electron microscope to determine a basic morphological characteristic, occurrence state and type of the chlorite; S2: performing data preprocessing on the sample; S3: establishing a water-rock numerical simulation model; S4: developing a water-rock numerical simulation experiment; S5: analyzing a water-rock numerical simulation result; and S6: explaining and applying the water-rock numerical simulation result.
G01N 23/2251 - Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups , or by measuring secondary emission from the material using electron or ion microprobes using incident electron beams, e.g. scanning electron microscopy [SEM]
G06F 30/28 - Design optimisation, verification or simulation using fluid dynamics, e.g. using Navier-Stokes equations or computational fluid dynamics [CFD]
Disclosed are an equipment failure mode predetermination and residual life prediction coupling system and method. The equipment failure mode predetermination and residual life prediction coupling system realizes coupling of equipment failure mode predetermination and residual life prediction, continuous collection of health information of equipment, predetermination of the failure mode and prediction of the residual life based on the state of health of the equipment in operation monitored and perceived in real time by sensor sets.
A secondary disaster early warning method based on ground-based SAR monitoring of deformation data includes (1) real-time monitoring of a secondary disaster unstable area through ground-based SAR to obtain deformation monitoring data; (2) constructing a displacement-time curve generated by the secondary disaster unstable area over time; setting a monitoring period, and based on the displacement-time curve, constructing a displacement change triangular area model; (3) based on the displacement change triangular area model, constructing an area-time curve, and obtaining the area-time curve change trend and the displacement triangular area in the displacement-time curve according to the monitoring period; (4) dividing the secondary disaster development process into an initial deformation stage, a constant velocity deformation stage, and an accelerated deformation stage; (5) setting early warning levels corresponding to each stage for phased secondary disaster early warning; and (6) quickly and comprehensively identifying the secondary disaster development stage and deformation evolution trend.
Thickening device and method for uniform solidification of composite lost circulation material made up of liquid and granular lost circulation materials
The provided are a thickening device and method for uniform solidification of composite lost circulation material made up of liquid and granular lost circulation materials. The thickening device includes a base. The base is provided with a side wall; an upper end of the side wall is provided with a detachable top cover; the base, the side wall, and the top cover form a sealed chamber; the base is provided with a rotating support platform; the rotating support platform is provided with a detachable slurry cup; the slurry cup is provided therein with agitating shafts; the agitating shafts each are provided with a blade; a top end of the agitating shaft is connected to a threaded rod through a ball head connector; an upper end of the agitating shaft is provided with a second gear, and the threaded rod is provided with a second limit platform.
B01F 23/53 - Mixing liquids with solids using driven stirrers
B01F 27/90 - Mixers with rotary stirring devices in fixed receptaclesKneaders with stirrers rotating about a substantially vertical axis with paddles or arms
B01F 29/83 - Mixers with rotating receptacles rotating about a substantially vertical axis with rotary paddles or arms, e.g. movable out of the receptacle
B01F 35/212 - Measuring of the driving system data, e.g. torque, speed or power data
The invention provides a fracture opening simulation device for hard brittle mudstone and shale with organic matter, it includes a simulated support, the lower part of the simulated support is connected with a storage bucket bottom block plate through a screw, the middle of the simulated support is provided with a support socket with a circular structure, the upper surface of the storage bucket bottom block plate is provided with a circular convex structure of a block plate boss, the block plate boss is closely inserted in the support socket, the upper surface of the simulated support is fixed connected with a core column storage barrel.
G01N 3/10 - Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
The provided are a device and method for measuring a bonding strength between a contaminated rock surface and a solidified material. The device includes a fixing and measuring assembly and four rock slabs enclosing a rectangular prism, where outer surfaces of the four rock slabs are fitted to two transverse support plates and two longitudinal support plates, respectively; the two longitudinal support plates are arranged between the two transverse support plates; upper and lower ends of the rock slabs are provided with an upper cover and a bottom plate, respectively; the upper cover and the bottom plate are detachably fixed to the two transverse support plates, respectively; the two transverse support plates are detachably fixed to each other through a second screw; a hydraulic device is provided among the four posts; and a movable end of the hydraulic device is provided with a supporting airbag.
A borehole wall spin-shearing device includes a load applying assembly, a soil shearing assembly, and a data acquisition assembly, where the load applying assembly is configured to apply a vertical load and an axial rotational load to the soil shearing assembly; the soil shearing assembly includes a plurality of shear plates; the plurality of shear plates are configured to penetrate into undisturbed soil after being ejected due to the vertical load and then shear the undisturbed soil due to the axial rotational load; and the data acquisition assembly is configured to acquire torque values of the plurality of shear plates during a process of shearing the undisturbed soil. The borehole wall spin-shearing device can directly conduct an in-situ borehole shear test in an exploration borehole with a conventional diameter in China, reducing the cost of drilling. The borehole wall spin-shearing device achieves a high degree of automation throughout the test.
G01N 3/24 - Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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
An intelligent safety supervision system applied to a ship is provided. An image acquisition module is configured to acquires high-definition images in real time. An automatic recognition module is configured to obtains ship dynamic and static data. A ship server to-performs feature recognition on the ship dynamic and static data to obtain a data processing result, to-transmits the ship dynamic and static data and the data processing result, and receives alarm indication information. An alarm module outputs an alarm. A ship client displays the data processing result, and determines whether to transmit the alarm indication information according to the data processing result. A communication module receives and transmits the ship dynamic and static data and the data processing result. A shore-side supervision system includes a ship safety supervision big data analysis platform for performing secondary feature recognition on the ship dynamic and static data, so as to obtain a secondary data processing result.
G06V 10/778 - Active pattern-learning, e.g. online learning of image or video features
A62C 3/10 - Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles in ships
G06V 10/80 - Fusion, i.e. combining data from various sources at the sensor level, preprocessing level, feature extraction level or classification level
G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks
G06V 20/52 - Surveillance or monitoring of activities, e.g. for recognising suspicious objects
Disclosed is an invasion correction method and system for resistivity logging. The method includes the steps of: analyzing mud filtrate invasion features based on an actual resistivity logging curve; determining an invasion mechanism, and performing forward modeling on a resistivity logging response; performing inversion by a random forest method to form a correction chart; and outputting a formation resistivity to finally form the invasion correction method and system for resistivity logging. In the present disclosure, double lateral correction under an invasion condition is accomplished, while a chart method and an inversion method are combined, ensuring the accuracy and operating rate of correction.
A robust nonnegative matrix factorization (RNMF) method, in which an image sample set is split into a training set and a test set. The training set and the test set are normalized to map the image data from [0, 255] to [0, 1]. The training set matrix is pretrained by RNMF for decomposition. l2,1-deep incremental nonnegative matrix factorization (l2,1-DINMF) model is construed. The l2,1-DINMF model is configured to decompose the training set matrix into l+1 factors. After the basis matrix has been updated, and the samples of the training set and samples to be recognized are projected into a feature space. Feature representations of the test set are classified by a trained SVM classifier to obtain a predicted label, and the predicted label is compared with an actual label of the test set to calculate a recognition accuracy.
G06V 10/764 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using classification, e.g. of video objects
G06V 10/77 - Processing image or video features in feature spacesArrangements for image or video recognition or understanding using pattern recognition or machine learning using data integration or data reduction, e.g. principal component analysis [PCA] or independent component analysis [ICA] or self-organising maps [SOM]Blind source separation
G06V 10/774 - Generating sets of training patternsBootstrap methods, e.g. bagging or boosting
Guizhou Geological Environment Monitoring Institute (Guizhou Institute of Environmental Geology) (China)
Inventor
Yu, Bin
Li, Yangchun
Chen, Wenhong
Abstract
The present disclosure discloses an early warning method for a shallow soil landslide based on rainfall and soil moisture content, relating to the field of soil landslides prevention and control. The early warning method comprises the following steps: a. determining whether a location is a humid region; b. calculating soil moisture content of the humid region in a rainy season; c. monitoring rainfall amounts in real time by sensors; d. calculating the soil moisture content S by step b; e. calculating rainfall duration on an hourly basis, calculating a total hourly rainfall amount by superposition from an initial 1-hour rainfall amount, and dividing the total hourly rainfall amount by the rainfall duration to obtain hourly rainfall intensity; f. calculating a critical value Cr of a shallow soil landslide; and g. determining a landslide grade and giving an early warning signal.
Disclosed is a method for analyzing changes in urban economic development characteristics of an urban agglomeration based on nighttime light remote sensing according, including: building a Gross Domestic Product (GDP) spatialization model: spatializing GDP of an urban agglomeration region by using an industry-based modeling approach, modeling spatialization of a primary industry output GDP1 with land use data, and modeling spatialization of a secondary and tertiary industry output GDP23 by selecting an optimal light index on the basis of nighttime light data; measuring an increase or a decrease of a specific variable over time at a pixel level using trend analysis; and modifying a gravity model that reflects an economic linkage strength between cities. The present disclosure can provide data support and methodological basis for the high-quality economic development of the urban agglomeration.
G06Q 10/0637 - Strategic management or analysis, e.g. setting a goal or target of an organisationPlanning actions based on goalsAnalysis or evaluation of effectiveness of goals
23.
GEOLOGICAL STRUCTURE CHARACTERIZATION METHOD BASED ON SEISMIC VELOCITY SIGNAL AND ACCELERATION SIGNAL
A geological structure characterization method based on a seismic velocity signal and a seismic acceleration signal is provided. The seismic acceleration signal and the seismic velocity signal are acquired and normalized. Constant-phase wavelet and minimum-phase wavelet extraction or mixed-phase wavelet extraction is performed. In the constant-phase wavelet and minimum-phase wavelet extraction, a first minimum-phase wavelet is extracted based on the seismic velocity signal, and a constant-phase wavelet is extracted based on the seismic acceleration signal, and converted to a second minimum-phase wavelet. A residual between the first minimum-phase wavelet and the second minimum-phase wavelet is calculated. If the residual is greater than a preset threshold, the constant-phase wavelet extraction is performed again, otherwise, the first minimum-phase wavelet and the constant-phase wavelet are output.
A method for identifying high-quality lithium-potassium-rich brine reservoirs based on parameter sensitivity analysis is provided. Basic characteristics of a brine reservoir area are determined. The sensitive parameter analysis of the brine reservoir area is performed by rock physics modeling and cross-plotting of logging curves to determine a rock physics parameter range and a logging parameter range of the brine reservoir area. The relationship between the wave impedance and the water saturation based on the rock physics model. A coordinate range of a water-rich reservoir is determined based on the inversion result of the water saturation. Within the coordinate range of the water-rich reservoir, a coordinate range of the lithium-potassium-rich brine reservoir is determined based on the natural gamma inversion result obtained by waveform phase-controlled inversion, so as to achieve geophysical identification and prediction of high-quality brine reservoirs in the marine strata.
A method of enhancing an abnormal area of a ground-penetrating radar image based on hybrid-supervised learning includes the steps of: building a database including a real image set, a simulation image set and a simulation image label set; adopting a generative adversarial network; processing semi-supervised training and unsupervised training alternately to obtain a trained model, then inputting a real radar image with abnormal area that needs to be enhanced into the model and processing through the generative network to output an abnormal-area-enhanced image. The method overcomes the problems of differences in characteristics between simulated images and real images, and low utilization efficiency of real image information by unsupervised methods, and improves the utilization efficiency of the enhanced network for real image information, the saliency of abnormal areas on real images, and the generalization ability of the enhanced network, therefore effectively enhances the significance of abnormal areas in ground-penetrating radar images.
The present disclosure provides a grinding robot for an inside wall of a small diameter pipe. The grinding robot includes a grinding device, a transmission device, and a driving device. By arranging the grinding robot into the above three portions, the overall bending pipe passability of the robot can be increased, which is convenient for the grinding robot to grind the small diameter pipe. A first gimbal and two second gimbals provided in the transmission device enable the grinding robot to flexibly pass through bends of the pipe, and enable a grinding driving force to be variably transmitted to the grinding device. When the grinding body rotates and contacts a pipe wall, a reaction force of the pipe wall on the grinding body is balanced by an adjusting spring adjustment force in a balance adjusting device and a self-weight of a grinding body.
B24B 5/40 - Single-purpose machines or devices for grinding tubes internally
B24B 5/18 - Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfacesAccessories therefor involving centreless means for supporting, guiding, floating or rotating work
B24B 33/02 - Honing machines or devicesAccessories therefor designed for working internal surfaces of revolution, e.g. of cylindrical or conical shapes
B24B 47/12 - Drives or gearings for grinding machines or devicesEquipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
B25J 11/00 - Manipulators not otherwise provided for
27.
METHOD FOR CORRECTING PHYSICAL PROPERTIES OF LAUMONTITE-RICH CLASTIC ROCK RESERVOIRS BASED ON OVERBURDEN PRESSURE POROSITY AND PERMEABILITY TESTS
A method for correcting physical properties of laumontite-rich clastic rock reservoirs based on overburden pressure porosity and permeability tests includes: conducting porosity and permeability tests on rock samples under normal temperature and pressure conditions; analyzing a type of a reservoir cement and characteristics of a reservoir space; comparing variations in the porosity and permeability between a laumontite-containing reservoir and a laumontite-free reservoir under overburden pressure conditions; fitting a variation function to establish relations between porosity, permeability, and overburden pressure in the laumontite-containing reservoir; and creating a correction plate of the permeability of the reservoirs with different laumontite contents.
A method for separation and simultaneously imaging of primary and multiple waves based on wave field decomposition is provided. It reformulates the two-way wave equation based wave field decomposition scheme to achieve efficient separation of primary wave and multiple waves of different orders, eliminate crosstalk noise, and simultaneously achieve efficient imaging of primary and multiple waves. The method is to decompose the up-going wave field into primary and up-going multiple waves of different orders on the acquisition surface, and decompose the down-going wave field into down-going multiple waves of different orders. Based on this generalized decomposition of up-going/down-going wave fields, a reformulated two-way wave equation wave field depth extrapolation scheme is used for simultaneous depth extrapolation and imaging of primary wave and multiple waves of different orders. With only one calculation, efficient imaging of multiple wave field types can be achieved.
A method for extracting surface morphology and fabric characteristics of rock ores and minerals, which includes the following steps. An adaptive two-dimensional (2D) structure enhancement filter operator and its filter aperture in the spatial domain are constructed based on confocal microscopic image data of a rock sample. Attribute data that retains and accentuates structural features of the rock sample is obtained through azimuth scanning. A data-driven higher-order nonlinear spline smoothing function of 2D elevation data is established to determine the optimal 2D localized spline smoothing function. After that, the positive and negative morphology attributes of the surface of the rock sample are calculated, so as to accurately, reliably and quantitatively characterize the surface morphology and fabric characteristics of the rock sample.
The invention pertains to a measuring system for the conductivity of supercritical geothermal fluid, featuring a reaction control unit with a reaction vessel lined with corundum ceramic and containing a stirrer, a pressure control unit including a booster pump connected to Ar gas and an air compressor, a flow control unit with a flowmeter, and a temperature control unit comprising a heating furnace with thermocouples both inside and outside the reaction chamber. An electrical signal monitoring unit with electrodes fitted through a corundum capillary into the ceramic lining measures current and voltage. The invention also details a method for measuring conductivity, highlighting how water-rock interactions in supercritical geothermal fluids affect conductivity changes.
G01N 27/08 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid which is flowing continuously
G01N 27/07 - Construction of measuring vesselsElectrodes therefor
G01N 27/12 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluidInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon reaction with a fluid
31.
COAXIAL WAVEGUIDE-BASED GEOTECHNICAL MULTI-POINT DEFORMATION SENSOR AND METHOD OF ADJUSTABLE GAUGE-LENGTH MEASUREMENT
A coaxial waveguide-based geotechnical multi-point deformation sensor and an adjustable gauge-length measurement method are provided. The coaxial waveguide-based geotechnical multi-point deformation sensor includes an outer conductor, open at opposite ends and hollow inside; magnetic metal support frames, inside the outer conductor, sequentially spaced along an axial direction of the outer conductor and each having a through-hole; an inner conductor inside the outer conductor and passing through each through-hole; and annular magnets, surrounding the outer conductor and configured to move along it, driving the nearest magnetic metal support frame to follow its movement. Each magnetic metal support frame acts as a reflection point. By reconstructing the interference spectra of any two reflection points, a gauge-length can exist between any two of the magnetic metal support frames. By collecting the changes in the interference spectrum signals of different gauge-lengths, deformation of geotechnical layers corresponding to the gauge-length(s) can be calculated, thus allowing the deformation of any geotechnical layer to be determined.
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
A downhole traction system includes a driving system and a downhole wheeled tractor. The driving system is connected with the downhole wheeled tractor; the downhole wheeled tractor comprises a tractor body, a power unit and a plurality of traction units; the plurality of traction units are arranged along the extension direction of the tractor body; each of the traction units comprises a driving arm, a supporting arm, a supporting wheel, a driving assembly and a supporting assembly; the driving arm and the supporting arm are movably connected with the tractor body; and the supporting wheel is connected with the driving arm and the supporting arm. When the supporting assembly drives the supporting arm to extend along the radial direction of the tractor body under the hydraulic drive action of the hydraulic power unit, the supporting wheel can be abutted against the well wall.
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
E21B 23/14 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for displacing a cable or a cable-operated tool, e.g. for logging or perforating operations in deviated wells
E21B 47/09 - Locating or determining the position of objects in boreholes or wellsIdentifying the free or blocked portions of pipes
E21B 47/13 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range
33.
Method for inpainting highlight region of vegetation image captured by unmanned aerial vehicle, device, medium, and product
Provided are a method for inpainting a highlight region of a vegetation image captured by an unmanned aerial vehicle, a device, a medium, and a product. The method includes: acquiring an image to be inpainted, and a historic image; inputting the image to be inpainted to a trained target detection network to obtain a waterbody highlight region image block; determining a template image block of the image to be inpainted based on the waterbody highlight region image block; cropping the historical image to obtain a plurality of candidate image blocks of the image to be inpainted; determining similarity between each candidate image block and the template image block by using a deep learning image coarse matching method; and screening candidate image blocks with the similarity greater than a predetermined threshold, and determining an optimal candidate image block in the candidate image blocks by using a pixel-by-pixel matching method.
G06V 10/25 - Determination of region of interest [ROI] or a volume of interest [VOI]
G06V 10/44 - Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersectionsConnectivity analysis, e.g. of connected components
G06V 10/60 - Extraction of image or video features relating to illumination properties, e.g. using a reflectance or lighting model
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
The present application discloses a coaxial waveguide based rock-soil internal multi-point deformation sensor and a variable gauge length measurement method. The coaxial waveguide based rock-soil internal multi-point deformation sensor comprises: an outer conductor, openings being formed at two ends of the outer conductor and the interior thereof being hollow; metal supporting frames, arranged in the outer conductor, the metal supporting frames being sequentially arranged at intervals in the axial direction of the outer conductor, and a through hole being formed in each metal supporting frame; an inner conductor, arranged in the outer conductor and passing through the through hole of each metal supporting frame and being in contact with each through hole; and magnetic rings, each magnetic ring being arranged on the outer conductor and capable of moving relative to the outer conductor so as to drive the metal supporting frame closest to the magnetic ring to move. According to the present application, a plurality of metal supporting frames are provided, each metal supporting frame serves as a reflection point, a sensing gauge length is formed between every two metal supporting frames, and the deformation situation of a horizon where the sensing gauge length is located can be obtained by obtaining changes of interference spectrum signals of different sensing gauge lengths, so that the deformation situation of any horizon can be obtained according to requirements.
G01B 7/16 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
G01B 11/16 - Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
35.
METHOD, APPARATUS AND SYSTEM FOR AUTOMATICALLY ADJUSTING OPENING DEGREE OF FLUID CONTROL VALVE
A method, an apparatus and a system for automatically adjusting an opening degree of a fluid control valve, relating to the technical field of oil and gas exploration and development. The method includes: establishing a fluid control valve having an orifice structure in oil and gas production; using a numerical simulation method to obtain the influence law of minimum opening degree adjustment step on oil and gas production; obtaining relevant production test data of the oil and gas well, and calculating the total oil and gas production and the oil and gas production of each production layer based on the production test data of the oil and gas well; dividing the production layer segments into high, middle and low-production layers according to the production ratio of each production layer segment; respectively calculating the average productions of the high, middle and low-production layers.
G05D 7/06 - Control of flow characterised by the use of electric means
G05B 13/04 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
36.
METHOD AND SYSTEM FOR ASSESSING POTENTIAL CATASTROPHE RISK IN REAL TIME TO OPTIMIZE FRACTURING CONSTRUCTION PARAMETERS
The present invention relates to the field of shale gas exploitation. Disclosed are a method and system for assessing a potential catastrophe risk in real time to optimize fracturing construction parameters. The method comprises: acquiring in real time seismic data during a shale gas exploitation process in a target zone by means of near-field monitoring; locating each seismic event according to the seismic data; acquiring in real time production factor data of a construction unit during the shale gas exploitation process in the target zone and casing deformation data during a single-well fracturing process; on the basis of a spatiotemporal relationship fitter, performing screening to select seismic events which meet a set condition; calculating a linear correlation coefficient, a nonlinear correlation coefficient and a regression coefficient of each piece of production factor data; calculating an importance weight of each piece of production factor data; determining master-control production factor data; determining a risk threshold value on the basis of a multi-field coupling numerical model; and assessing a potential seismic risk in real time on the basis of the master-control production factor data. The present invention can reduce potential seismic and casing deformation risks during a shale gas exploitation process.
The present invention discloses a 1,4-sulfur-bridged polycyclic compound containing dihydrobenzofuran structure which has a structural formula (I). A preparation method is also disclosed which includes the steps of: dissolving 2-nitrobenzofuran (II) and 5H-thiazolone (III) in an organic solvent; then adding molecular sieve and chiral catalyst, stirring and allowing reaction at room temperature under argon protection until the reaction is completed; and carrying out separation and purification to obtain a 1,4-sulfur-bridged polycyclic compound (I) containing dihydrobenzofuran structure. The polycyclic compounds of the present invention have a substructure of dihydrobenzofuran and 1,4-thiopiperidinone. The application of the compound for the preparation of antitumor drugs is also disclosed, which has a good potential value in antitumor drug research. The preparation method has the advantages of novelty, simplicity, simple operation, mild reaction conditions, high yield and high stereoselectivity, and etc.
The disclosure relates to a staggered electrode bio-electro-Fenton groundwater circulation well system, including a groundwater circulation well, a water pumping and injecting assembly and an in-well bio-electro-Fenton assembly. The water pumping and injecting assembly is configured to realize water pumping and injection between different screening sections of the groundwater circulation well. The bio-electro-Fenton assembly arranged in a first screening section of the groundwater circulation well includes at least one electrode device. A cathode and an anode of the electrode device form a spatially staggered arrangement according to different distribution areas. According to the disclosure, the spatially staggered arrangement of the cathode and the anode, the influence of oxygen on an anaerobic environment of an anode chamber in the electrode device is greatly reduced while ensuring the cathode takes oxygen as an electron acceptor, and the constructed bio-electro-Fenton system can accelerate the decomposition of organic pollutants in the groundwater circulation well.
DEPARTMENT OF NATIONAL DEVELOPMENT AND REFORM COMMISSION AND REGIONAL ECONOMICS (China)
CHENGDU UNIVERSITY OF TECHNOLOGY (China)
DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING, UNIVERSITY OF PITTSBURGH (USA)
ADMINISTRATIVE COMMISSION OF BEIJING CITY SUB-CENTER (China)
BEIJING HUIDAFENG TECHNOLOGY CO., LTD. (China)
Inventor
Cheng, Cheng
Yu, Chuanqi
Bunger, Andrew
Abstract
System for designing a perforating gun capable of reducing energy consumption includes a survey module, an operation module, a monitoring module, a storage module, and a computing module. The operation module is configured to match a target perforating gun to perform a perforating operation to perform an HF operation, obtain a status parameter when the target perforating gun performs the perforating operation and send the status parameter to the monitoring module. The survey module is configured to obtain basic data of a target operation region. The monitoring module is configured to, at a preset frequency, obtain a safety monitoring result by analyzing first data in target data and the status parameter; in response to the safety monitoring result not satisfying a preset safety condition, control a fracturing control pump of the operation module to stop operation; and obtain an HF effect by analyzing second data, in response to the HF effect not satisfying a preset effect condition, update the preset frequency.
G06F 30/17 - Mechanical parametric or variational design
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
An apparatus for estimating under monocular infrared thermal imaging vision the pose of an object grasped by a manipulator. The apparatus is carried on a manipulator loaded by a special robot working in a smoke and explosion environment, and comprises: a monocular infrared thermal imaging camera, which is configured to perform imaging in the smoke and explosion environment and collect an infrared thermal imaging visual image; a laser ranging module, which is carried at the bottom end of the monocular infrared thermal imaging camera and registers a ranging point of the laser ranging module to coincide with the central point of an infrared image, and which is configured to range a grasped object; an edge computing platform, which is configured to perform detection and positioning, pose estimation and coordinate parameter extraction on the grasped object according to the infrared imaging visual image and a ranging result, and to plan a motion path of the manipulator; and an embedded microcontroller, which is configured to generate a control signal according to the planned motion path and control the manipulator to grasp the object. The apparatus is characterized by being lightweight and having high working efficiency, and is suitable for being carried on a special robot platform. Further provided is an estimation method of the apparatus for estimating under monocular infrared thermal imaging vision the pose of an object grasped by a manipulator.
A pose estimation apparatus and method for a robotic arm to grasp a target based on monocular infrared thermal imaging vision are provided. The pose estimation apparatus includes a monocular infrared thermal imaging camera, a laser ranging module, an edge computing platform, and an embedded processor. The monocular infrared thermal imaging camera can perform imaging based on a temperature difference between a target and an environment in smoke, combustion, and explosion environments in which a specialized robot works. The laser ranging module can assist in measuring a distance of a to-be-grasped target. An algorithm process is deployed on the edge computing platform. The embedded processor completes motion control of a robotic arm.
G06V 10/46 - Descriptors for shape, contour or point-related descriptors, e.g. scale invariant feature transform [SIFT] or bags of words [BoW]Salient regional features
G06V 10/50 - Extraction of image or video features by performing operations within image blocksExtraction of image or video features by using histograms, e.g. histogram of oriented gradients [HoG]Extraction of image or video features by summing image-intensity valuesProjection analysis
G06V 10/77 - Processing image or video features in feature spacesArrangements for image or video recognition or understanding using pattern recognition or machine learning using data integration or data reduction, e.g. principal component analysis [PCA] or independent component analysis [ICA] or self-organising maps [SOM]Blind source separation
G06V 10/80 - Fusion, i.e. combining data from various sources at the sensor level, preprocessing level, feature extraction level or classification level
G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks
42.
PRE-LOADED CONCRETE-FILLED STEEL TUBULAR COLUMNS AND METHOD FOR FABRICATING THE SAME
The present application relates to a circumferentially pre-loaded concrete-filled steel tubular column, including a steel tube formed from a plurality of steel sheets with two flanges formed at two opposite sides of each of the steel sheets, respectively, and defined with bolt holes therein; and a concrete core provided in the steel tube. Every two adjacent steel sheets are connected with each other by bolts passing through corresponding bolt holes in two adjacent flanges to form the circumferentially pre-loaded concrete-filled steel tubular column.
E04C 3/34 - ColumnsPillarsStruts of concrete or other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
43.
SEISMIC QUANTITATIVE PREDICTION METHOD FOR SHALE TOC BASED ON SENSITIVE PARAMETER VOLUMES
A seismic quantitative prediction method for shale total organic carbon (TOC) based on sensitive parameter volumes is as follows. A target stratum for a TOC content to be measured is determined, logging curves with high correlations with TOC contents are analyzed, the logging curves are found as sensitive parameters; sample data are constructed using the sensitive parameters; a radial basis function (RBF) neural network is trained with the sample data as an input and the TOC content at a depth corresponding to the sample data as an output to obtain a RBF neural network prediction model; sensitive parameter volumes are obtained by using the sensitive parameters and post stack three-dimension seismic data to invert; prediction samples are constructed using the sensitive parameter volumes; the predicted samples are input to the RBF neural network prediction model to calculate corresponding TOC values, thereby the TOC content of the target stratum is predicted.
Provided is a two-stage reverse-torque bent screw orientation tool. An existing bent screw orientation technology has the technical problems of large friction resistance, difficult control of a borehole track, a low drilling speed and the like, and restricts economic, safe and long-acting development of oil and gas. In order to solve the above problems, the two-stage reverse-torque bent screw orientation tool is invented and composed of a first-stage clutch mechanism and a second-stage clutch mechanism, and the first-stage clutch mechanism and the second-stage clutch mechanism are both composed of a battery, a battery compartment, a pressure sensor, an electromagnetic valve, a body, a plug, a piston, an outer tooth cylinder, an inner tooth cylinder, a transmission cylinder, a connecting cylinder, a bearing, a limiting cylinder, a lower joint, a thrust bearing, a battery compartment, a circuit board, a cover plate and the like.
E21B 47/13 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range
45.
Wireless remote control method and system for controllable rotary sliding guiding drilling
Disclosed are a wireless remote control method and system for controllable rotary sliding guiding drilling. An upper end of a controllable rotary sliding guiding drilling mechanism is provided with a drill rod; and the wireless remote control system for controllable rotary sliding guiding drilling further comprises: an MWD arranged at a lower end of the controllable rotary sliding guiding drilling mechanism; a bent screw drill tool mounted at a lower end of the MWD; a drill bit mounted at a lower end of the bent screw drill tool, the drill bit being connected with the bent screw drill tool through a connector; and a clutch module mounted on the controllable rotary sliding guiding drilling mechanism, the clutch module comprising an electromagnetic valve, a processor, an internal pipe pressure sensor, an external pipe pressure sensor and a wireless data transmission module.
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 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
46.
Suspension modifier directly added into fracturing fluid for real-time proppant modification during fracturing and the application thereof
The invention provides a suspension modifier directly added into fracturing fluid for real-time proppant modification during fracturing and the application thereof, relating to the field of oil and gas production technologies. The suspension modifier is a controlled release nanoemulsion and comprises surface hydrophobic modifier, surfactant, cosurfactant and water. The suspension modifier is directly added into clear-water or active-water fracturing fluid while the proppant is added into water. After stirring, the suspension modifier is capable of self-assembling and being adsorbed on the proppant surface, so that the proppant surface becomes hydrophobic and aerophilic. The invention no longer requires the proppant to be pretreated, and the bubble-suspended proppant can be obtained directly by adding the suspension modifier to the clear-water or active-water fracturing fluid, and meanwhile adding the proppant to the fracturing fluid. This technology is not only easy to operate, but also low in cost for proppant treatment.
Provided is use of Dendrobium officinale DoObgC and a variable spliceosome thereof in promoting embryonic axis elongation. The serial number of the Dendrobium officinale DoObgC nucleotide is KT359612.1. Also provided is a variable spliceosome with a nucleotide sequence set forth in any of SEQ ID NOs. 1-5. In an Arabidopsis thaliana plant overexpressing Dendrobium officinale DoObgC or the variable spliceosome thereof, the length of the embryonic axis is significantly greater than that of a wild-type plant.
The present disclosure provides a heat transfer limit experimental device of a high-temperature heat pipe equipped with a convenient temperature measurement box and a method based on the heat transfer limit experimental device. The heat transfer limit experimental device includes a high-temperature heat pipe, an electric heating system, a convenient temperature measurement box, a control system, a gas-cooled heat exchange system, and a data acquisition system. The electric heating system is connected to the high-temperature heat pipe. The convenient temperature measurement box is connected to the gas-cooled heat exchange system. The data acquisition system is connected to the gas-cooled heat exchange system, the convenient temperature measurement box, and the electric heating system. The control system is connected to the gas-cooled heat exchange system, the convenient temperature measurement box, and the electric heating system. The high-temperature heat pipe is disposed inside the convenient temperature measurement box.
The invention relates to a method for microbial remediation of underground water petroleum hydrocarbon contamination by regulating soil buffer capability, which comprises detecting the soil particle size of contaminated site soil, dividing the contaminated site soil into coarse-grained soil and fine-grained soil; dividing the contaminated site soil into high buffer capacity soil and low buffer capacity soil; and adjusting the composition and ratio of a biostimulant solution added to the contaminated site soil based on the classification of the contaminated site soil. The detecting step includes classifying soil with a particle size between 0.075 mm and 60 mm and a mass greater than or equal to 50% of the total mass as coarse-grained soil; and classifying soil with a particle size not greater than 0.075 mm and a mass greater than or equal to 50% as fine-grained soil.
The present disclosure discloses a classification method and system for fine-grained mixed sedimentary rocks, a medium and a terminal. Core description and thin section observation are used to accurately identify the sedimentary structure types and their vertical distribution characteristics from the macroscopic and microscopic perspectives, and indicates the mixed sedimentation characteristics of combination of different lamina or laminar couplets. The micro-drilling sampling technique is used to sample the samples with different types of sedimentary structures while avoiding diagenetic minerals. X-ray diffraction mineral content analysis and a high-precision carbon-sulfur analyzer are used to obtain the contents of different types of minerals and the total organic carbon contents in each sample, respectively, the basic rock type of each sample was determined using a triangular classification diagram. The name of sedimentary structure and the total organic carbon content are added in order before the name of the basic rock type.
-shaped bracket plate; the left and right sides of the base are symmetrically welded with four vertical bracing plates, an I-shaped installation plate is welded on the top of the four vertical bracing plates, four hydraulic cylinders are locked, fixed and hoisted on the bottom of the I-shaped installation plate with screws.
G01N 3/10 - Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
The present invention provides a multifunctional rock mechanics tester, pertaining to the technical field of mechanics tester, consisting of a base; wherein a power mechanism is mounted on the top of the base, two tension testing mechanisms are arranged on the power mechanism in an up-and-down symmetrical way, a clamping mechanism is mounted on each tension testing mechanism, a rock testing block is clamped between the two clamping mechanisms. The present invention realizes the tension and pressure testing of the rock test block through the arrangement of tension testing mechanism and pressure testing mechanism, thus improving the functionality of the present mechanics tester, which not only reduces the testing cost, but also effectively decreases the occupied space; the present invention solves the problem that the traditional mechanics tester can only complete one kind of test when it is used.
The present disclosure providing a geological sampling backpack drilling machine includes a housing, a drilling device movably received in the housing, a seat arranged on the housing, and a bracket detachably connected to the housing via a limiting rotator, with an angle between the bracket and the housing being variable; the seat arranged between a tip of a drilling rod and the bracket, and rotating around the drilling rod as an axis thereof; a rotating member arranged on a surface of the seat and surrounding around the drilling rod to detachably connect with a supporting post, both the supporting post and the bracket cooperatively supporting the drilling device; the drilling rod passing through the housing and the seat; both the bracket and the supporting post supporting the drilling device that is obliquely drilled and the housing for enabling the drilling device to stably drill at an inclined state.
The present disclosure belongs to the field of environmental protection and relates to a method for remediating groundwater chlorophenols organic contamination. The method includes determining a location of a contamination source; setting up an injection well based on the location of the contamination source; and injecting a remediation reagent into groundwater in a to-be-remediated region through the injection well so as to degrade chlorophenols organic contamination in the groundwater in the to-be-remediated region.
The invention provides a sampling device for geological fluid detection, relates to the technical field of fluid detection. The sampling device comprises a support frame, the support frame is of an L-shaped structure, and a second support plate is arranged at an upper portion of the support frame; the protection cover is mounted at the corner of a bottom portion of the support frame. The water fixing member is clamped above the bottom portion of the support frame; the locking inclined block is mounted at the bottom portion of the; and the detector is provided with a water inlet pipe. Fluid at different depths is detected through cooperation of the mounting sleeve and the lifting frame, a fluid drainage tube is wound around the winding wheel, the mounting sleeve is driven by the lifting frame to adjust the position through the arrangement of the gear and the rack, the fluid is sampled through the sampling test tube.
A method for predicting an air quality index (AQI) based on a fusion model proposes a differential fusion seasonal prediction model (DF-SPM) based on a random forest (RF) model and a convolutional neural network (CNN)-long short-term memory (LSTM)-attention (CLA) model. This method uses the optimal threshold interval (OTI) search algorithm to search and learn the OTI of four seasons during the prediction process, and obtains the final prediction results according to the predicted values of RF model and CLA model. The fusion model combines the prediction advantages of two independent models, and fully considers the seasonal and periodic characteristics of AQI, so as to accurately search OTI in different time periods with the seasonal scale, so as to achieve higher prediction accuracy. The OTI strategy of fusion model is superior to the single threshold strategy, which can extract the historical fluctuation characteristics of AQI and achieve higher prediction accuracy.
G06N 3/0442 - Recurrent networks, e.g. Hopfield networks characterised by memory or gating, e.g. long short-term memory [LSTM] or gated recurrent units [GRU]
57.
Oil-gas-water three-phase automatic metering device and method
An oil-gas-water three-phase automatic metering device and method includes a liquid inlet pipe, a pump body, a degassing assembly, a water inlet assembly, first and second liquid storage pipes, a weighing assembly, and a control unit. The liquid inlet pipe, degassing assembly, one end of the first liquid storage pipe and one end of the second liquid storage pipe are connected to four valve ports of a first changeover valve, respectively. The water inlet assembly, one end of the pump body, the other end of the first liquid storage pipe, and the other end of the second liquid storage pipe are connected to four valve ports of a second changeover valve, respectively. The degassing assembly, the water inlet assembly and the other end of the pump body are in communication with the weighing assembly, and the pump body, degassing assembly and weighing assembly are communicatively connected to the control unit.
The online detection system for type identification and activity measurement of radiations in gas or liquid is provided, which can capture the light signals generated by different radiations in real time, and convert the light signals into the electrical signals, so as to realize the online type identification and activity measurement of the radiations based on the waveforms and the time information of the electrical signals of the different radiations. In addition, based on the characteristic that different radiations have different penetration capabilities, the inner-outer two-layer activity measurement structure is designed, which can discriminate the radiations with the same waveform. Therefore, the present disclosure simplifies the radiation activity measurement process, thereby greatly improving the efficiency of the radiation activity measurement.
A method for removing phosphorus and boron impurities in an industrial silicon melt by secondary refining is provided. According to the present disclosure, inorganic zinc chloride is adopted as an impurity removal medium and is quickly decomposed into zinc and chloride ions at high temperatures; the phosphorus and boron impurities can react with the zinc and chloride ions to yield low-melting and high-melting compounds during contact with a silicon melt, the low-melting compounds volatilize and escape from the industrial silicon melt at the high temperature of the secondary refining. The high-melting compounds are segregated at the grain boundary along with silicon solidification and removed by crushing and pickling, or sink to the very bottom of the silicon melt and are removed by cutting off a deposition layer at a bottom of a silicon ingot after the silicon melt is solidified.
A reservoir bank landslide susceptibility evaluation method. The method includes the following steps: S1, acquiring geophysical parameters; S2, calculating stability of a reservoir bank after impoundment through a static geological evaluation model according to the geophysical parameters; S3, obtaining an average displacement velocity in a geographic coordinate system according to single look complex (SLC) images after impoundment; and S4, according to the average displacement velocity in the geographic coordinate system and the stability of the reservoir bank after impoundment of the reservoir, obtaining a reservoir bank landslide susceptibility grade. According to the method, a problem that present landslide susceptibility evaluation methods all adopt a single model to evaluate landslide susceptibility, which has low evaluation accuracy of the landslide susceptibility is solved.
A method of locating a temperature anomalies of a distributed optical fiber includes the steps of: (a) generating a training dataset having training samples; (b) setting labels for training samples; (c) building a convolutional neural network composed of multi-layer convolutional networks and a fully connected layer, training to form a convolutional neural network model; (d) utilizing a fiber-optic temperature sensing system for measurement of testing object; (e) sending acquired data into the convolutional neural network model to obtain output features, then processing mapping and binarization; (f) offsetting the binary feature to obtain an offset feature and calculating a cosine similarity; and (g) obtaining a location of the abnormal temperature event by identifying the offset feature with a largest cosine similarity and identifying its location in the sequence P.
G01K 11/32 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in transmittance, scattering or luminescence in optical fibres
G01K 15/00 - Testing or calibrating of thermometers
Disclosed are a hybrid density abrupt interface inversion method based on machine learning constraints. The inversion method includes constructing an initial basin interface and randomly generating a disturbed basin interface data set; obtaining a basin interface data set through Hadamard product operation on the initial basin interface and the disturbed basin interface data set; obtaining a high-resolution density interface model data set through filling the basin interface data set with advanced functions; performing forward calculation to obtain a simulated gravity data set; carrying out mathematical transformation on the simulated gravity data set and weighting to obtain a low-resolution migration density interface model data set; optimizing a migration model-based deep learning network and mapping to obtain a high-resolution constrained density interface prior model; and constructing a stable nonlinear loss function and performing regularization inversion to obtain a high-resolution density interface model.
G06F 30/27 - Design optimisation, verification or simulation using machine learning, e.g. artificial intelligence, neural networks, support vector machines [SVM] or training a model
A waste mercury recovery device including an infrared heater, used for heating mercury-containing waste; a waste mercury device, placed on the infrared heater, and used for holding the mercury-containing waste; a pure mercury recovery extractor, including a mercury vapor cooling part and a pure mercury storage part; a mercury vapor cooling part, communicated with the waste mercury device, and used for cooling mercury vapor; and a pure mercury storage part, communicated with the mercury vapor cooling part, and used for storing cooled and liquefied mercury.
A method, a system, a device and a medium for landslide identification based on full Polarimetry Synthetic Aperture Radar (full PoISAR) are provided. The method mainly includes: registering target full PoISAR data with target optical remote sensing data and target digital elevation model data to obtain a first registration result and a second registration result; determining a polarization feature, a decomposition feature, and a terrain feature of a target area according to registration results; determining a texture feature and a hue feature of the target area according to the target full PoISAR data; determining a spectrum feature of the target area according to the target optical remote sensing data; fusing abovementioned multi-dimensional features to obtain a target fusion feature; and inputting the target fusion feature into a landslide mass identification model for identifying a landslide mass, so as to determine a landslide area in the target area.
G01V 1/00 - SeismologySeismic or acoustic prospecting or detecting
G01S 13/90 - Radar or analogous systems, specially adapted for specific applications for mapping or imaging using synthetic aperture techniques
G06V 10/80 - Fusion, i.e. combining data from various sources at the sensor level, preprocessing level, feature extraction level or classification level
G01S 7/41 - Details of systems according to groups , , of systems according to group using analysis of echo signal for target characterisationTarget signatureTarget cross-section
G01S 13/86 - Combinations of radar systems with non-radar systems, e.g. sonar, direction finder
65.
Groundwater circulation well system with pressure-adjustable hydrodynamic cavitation
The present invention relates to a groundwater circulation well system with pressure-adjustable hydrodynamic cavitation, including a circulation well body, a sucked and injected water circulation assembly and a hydrodynamic cavitator. The sucked and injected water circulation assembly is based on a water suction and injection pump. The hydrodynamic cavitator is provided, inside a vortex chamber, with a vortex water inlet column capable of changing a water passing aperture. The hydrodynamic cavitator is capable of changing a bubbling pressure and a breaking pressure of hydrodynamic cavitation bubbles in the vortex water inlet column. The hydrodynamic cavitator generates vortices in the circulation well body to accelerate uniform mixing of a remediation agent and the groundwater. Energy from collapsing and bursting of the hydrodynamic cavitation bubbles activates the remediation agent such that contaminants in the groundwater are efficiently degraded.
A direct well-tie method for depth-domain logging and seismic data, including: removing null and outlier values from logging velocity data and logging density data to obtain valid logging velocity data and valid logging density data; calculating a logging reflection coefficient; estimating an initial zero-phase depth-domain seismic wavelet from seismic section; making a depth-domain synthetic seismogram; interpolating the depth-domain seismogram at the logging location; performing cross-correlating operation between the depth-domain synthetic seismogram and the interpolated depth-domain seismogram at the logging location; estimating a depth-domain seismic wavelet; updating the depth-domain synthetic seismogram; generating a corresponding depth deviation point set; subjecting elements in the set to interpolation to obtain a depth calibration curve; subjecting the depth calibration curve and depth axis to addition to obtain depth axis; generating a logging depth-seismic depth corresponding relationship and a depth-domain seismic wavelet.
The present invention relates to a staggered electrode bioelectro-Fenton circulating well system, at least comprising a circulating well, a water pumping and injecting assembly, and an in-well bioelectro-Fenton assembly. The water pumping and injecting system is used for pumping and injecting water between different screen sections of the circulating well. The bioelectro-Fenton assembly disposed in a first screen section (21) of the circulating well comprises at least one electrode, and a cathode (12) and an anode (11) of the electrode are spatially staggered according to a means of different distribution regions. In the present invention, by means of the staggered arrangement of a cathode and an anode in space, the impact of oxygen on an anaerobic environment of an anode chamber in an electrode is greatly reduced while ensuring that the cathode uses oxygen as an electron acceptor, and a constructed bioelectro-Fenton system can accelerate the degradation of organic pollutants in a circulating well.
A pseudo-static test device and method for seismic behavior of connection joints of a wallboard. The device includes ground anchor holes, a support frame including a steel beam and two steel columns, and a test wallboard. A bottom plate of the steel beam is provided with at least two first connecting holes. A top plate each steel column is provided with a second connecting hole. A bottom plate of each steel column is provided with a third connecting hole. The bottom plate of the steel beam is provided with a connection joint assembly configured to hingedly or rigidly connect a top of the test wallboard to the steel beam. Each first connecting hole is connected to the second connecting hole through a flange assembly.
A finite element-based ore deposit drilling information processing and analysis method and device are described herein. The information processing method includes: dividing finite elements based on related information of an exploration borehole, and constructing corresponding sectional finite element plans; and performing three-dimensional (3D) spatial co-position stacking on the sectional finite element plans, and constructing scanning analytic finite element profiles through spatial analysis. According to the method, geological borehole information can be visually analyzed and presented in a sectional and layered mode, and the method has excellent practical value and indicating significance for accurate delineation of prospecting target areas, accurate mining, dressing and smelting, and structural metallogenic research.
The present invention relates to the technical field of development of underground resources such as petroleum, natural gas, geothermal energy, etc., in particular to a downhole explosion robot based on planetary roller screw telescoping and traction method thereof. The present invention provides a downhole explosion robot based on planetary roller screw telescoping and traction method thereof, comprising a rear joint, a rear main body, a telescopic sub, a front main body, and a front joint, and the rear main body is provided with a rear control sub and a rear support sub; the front main body is provided with a front support sub and a front control sub, and the telescopic sub is respectively connected with the rear support sub and the front support sub. The invention has the advantages of reliability and stability, with less impact on the tube string, and can be applicable to smaller wellbore.
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
E21B 23/04 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion
Guizhou Geological Environment Monitoring Insitute (Guizhou Institute of Environmental Geology) (China)
Inventor
Yu, Bin
Li, Yangchun
Deng, Weiwei
Yang, Lingwei
Chen, Wenhong
Abstract
This is an early identification method for a shallow soil landslide, belonging to the technical field of landslide prevention and control engineering. The present invention accurately determines and identifies a shallow soil landslide in a quantitative manner, improving the early identification efficiency of a landslide and helping to improve the disaster prevention effect.
Guizhou Geological Environment Monitoring Institute (Guizhou Institute of Environmental Geology) (China)
Inventor
Yu, Bin
Li, Yangchun
Deng, Weiwei
Yang, Lingwei
Chen, Wenhong
Abstract
This is an early warning method for a shallow soil landslide based on a digital topographic map, belonging to the field of landslide prevention and control engineering. It has following steps: a. connecting a straight line along an upward bulged intermediate point of a contour line of the topographic map as an intermediate line; b. determining an intermediate point; c. constituting a three-point group of a plane curvature; d. taking an arithmetic average of slopes as a slope α of a landslide mass. The shallow soil landslide can be early warned without a lot of historical observation data of landslide occurrence, and the dangerous landslide mass can be determined in advance, which greatly improves the applicability of disaster prevention and the early warning efficiency.
ERCHU CO., LTD.OF CHINA RAILWAY TUNNEL GROUP (China)
CHINA RAILWAY TUNNEL GROUP CO., LTD. (China)
CHENGDU UNIVERSITY OF TECHNOLOGY (China)
SICHUAN NORMAL UNIVERSITY (China)
Inventor
Qin, Zhengyang
Guo, Xinxin
Wei, Xiaobo
Yu, Jiawu
Zhang, Zhaojun
Tang, Shaowu
Wang, Rui
Long, Wenhua
Wang, Xuelei
Liang, Zhen
Zhang, Chengyong
Zhao, Baofeng
Lin, Lin
Zhou, Xitao
Hu, Guangyi
Gao, Bo
Chen, Jun
Yin, Xiaodong
Yang, Haijun
Yang, Tao
An, Bin
Feng, Qianjin
Wang, Baiquan
Chen, Wenchao
Chen, Zhiyong
Feng, Haoyu
Chen, Mingzhe
Abstract
Disclosed are an expansion shell yielding anchor cable and a construction method thereof, which relate to the technical field of underground engineering. An expansion shell anchoring piece is fixed to the upper end of a variable cross-section yielding anchor cable, and an anchorage device is fixed to the lower end of the variable cross-section yielding anchor cable. A hollow metal pipe is arranged in the middle of the anchor cable. The outer part of the hollow metal pipe is enclosed by a high-strength conical pipe. The outside of the anchor cable is enclosed by a variable cross-section threaded sleeve via a binder. The present invention is primarily used for providing anchoring support to water-rich tunnels, in particular high-stress large-deformation water-rich underground projects. The variable cross-section yielding anchor cable, the expansion shell anchoring piece, the anchorage device and the backing plate realize an anchoring technology that integrates rapid anchoring, yielding support and grouting protection. The expanded expansion shell anchoring piece and the surrounding rock of a tunnel wall form a bite force that provides immediate support to the surrounding rock. The yielding function of the variable cross-section yielding anchor cable increases the deformation capability of the anchor cable. The hollow metal pipe built inside the variable cross-section yielding anchor cable realizes post-grouting protection.
A method for calculating a sensitivity of a displacement of Synthetic Aperture Radar (SAR) along line-of-sight direction to a slope gradient and a slope aspect is provided, comprising: obtaining SAR data and Digital Elevation Model (DEM) data covering slope bodies, and extracting a local incident angle of an image by utilizing a satellite side-looking imaging principle; carrying out geometric distortion on the slope bodies under ascending and descending orbits by utilizing the local incident angle, to obtain specific locations of geometric distortion areas under ascending and descending orbit; calculating sensitivities of detections to changes of the slope gradient and the slope aspect under ascending and descending orbits according to the extracted parameter information of the SAR satellite in ascending and descending orbits and satellite heights, and dividing a sensitivity distribution by combining the sensitivity and the specific locations of the geometric distortion.
The present disclosure relates to the field of geophysical processing methods for oil and gas exploration, and more particularly, to a method for gas detection using multiple quantum neural networks. A plurality of stratigraphic and structural seismic attributes are extracted from the seismic data of a target horizon, and input seismic characteristic parameters are divided into different classes by using an unsupervised learning and supervised learning combined quantum self-organizing feature map network. Gas detection is then performed using a particle swarm optimization based quantum gate node neural network with clustering results of various seismic characteristic parameters output by the quantum self-organizing feature map network as inputs. The present method uses the unsupervised learning and supervised learning combined quantum self-organizing feature map network for a plurality of stratigraphic and structural seismic attributes of the seismic data and thus has improved accuracy and uniqueness of clustering.
The invention relates to the field of tourism risk prediction, and particularly to a high land tourism safety risk warning method based on reinforcement learning, comprising: step S1, storing a tourism data set in a historical time period of a tourist site in a database, and based on the database, initializing a tourism risk warning indication function Q and a risk target function T; step S2, based on a tourism risk assessment factor sequence and combined with the selected tourism data set in the historical time period, training the tourism risk warning indication function Q and the risk target function T; and step 3, combined with an input time parameter and the trained tourism risk warning indication function Q, obtaining a warning action under the time parameter, and obtaining a risk assessment rank of the tourist site.
Disclosed is a method of quantitatively evaluating structural disturbance characteristics of present in-situ geo-stress in deep shale gas reservoirs, including: measuring geomechanics key parameters of key wells in different tectonic zones within a study area; performing interpretations of single-well profile rock mechanics and continuity of the in-situ geo-stress in magnitude and direction; establishing a geological model; performing anisotropic sequential Gaussian stochastic simulation to obtain three-dimensional (3D) heterogeneous rock mechanics parameter field distribution; performing prediction of distribution of geo-stress states in the study area, and calculating a stress structural index and stress disturbance factor of the target layer and a rotation degree of a maximum horizontal principal stress; and performing quantitative evaluation on an in-situ geo-stress structural disturbance and mapping.
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
78.
Simulation platform and simulation method for leakage detection and treatment
Disclosed are a simulation platform and a simulation method for leakage detection and treatment. The simulation platform includes a water tank open at the top, which is a holding device; simulation sand, which is laid at the bottom of the water tank, and the upper area of the simulation sand is the experimental water filling area for filling simulation water; a leakage simulation device, which is buried in the simulation sand; a plurality of electrodes, which are distributed on the simulation sand for collecting and sending potential and current signals to a data processing terminal; a hydraulic brake, which is arranged in the experimental water filling area and used for stirring the simulation water; the hydraulic brake is not turned on in the static water environment simulation, and is turned on in the dynamic water environment simulation.
G01M 3/16 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
79.
Nuclear detection simulation device based on nanosecond light source and nuclear signal inversion technology
The present disclosure provides a nuclear detection simulation device based on a nanosecond light source and a nuclear signal inversion technology. Electronic circuits and nuclear pulse current signals are used to drive blue LEDs to emit nuclear pulse optical signals, so as to simulate a scintillator to receive γ radiation to emit light, and can simulate point sources and area sources, organic scintillator detectors and inorganic scintillators, scintillation efficiency and detection efficiency, radioactive sources, fast components and slow components, multi-type nuclear pulse signals, a statistical fluctuation phenomenon of nuclear pulses, the electron pair effect, the Compton effect, the photoelectric effect, and self-radiation of the scintillator, generate single or piled-up pulse signals, corresponding energy spectrum curves, and an environmental background spectral line. 3D visualization configuration and a nuclear signal detection process can be subjected to animated demonstration.
The present disclosure provides a multi-parameter calibration system for a spectrometer based on a nanosecond light source, including a main channel for outputting nuclear pulse signals, and a coincidence channel for outputting the nuclear pulse signals. Each channel uses current nuclear pulse signals to drive a light-emitting diode (LED) to emit nuclear pulse optical signals, and a simulated scintillator is irradiated to emit nanosecond nuclear pulse optical signals. The present disclosure can respectively test and calibrate multiple parameter performance indexes of the spectrometer throughput baseline restoration spectrometer. The stability of the spectrometer is tested and calibrated through output of certain regular nuclear pulse signals.
An automatically-cleanable thickening performance evaluation instrument for drilling LCMs includes a cleaning device, a kettle body, a thickening motor, a heating component, a test ending component, a top cover, and a bottom cover, where upper and lower ends of the kettle body are both opened; the kettle body is arranged in a third bearing inner race, a third bearing outer race is connected to a first limb, and the first limb is configured to limit a position of the kettle body; and the kettle body is detachably connected to the thickening motor and driven by the thickening motor to rotate. The instrument can realize electric heating and air pressurization to simulate the underground environment, and the kettle body can be completely sealed, such that a measured thickening time is close to an actual thickening time. Moreover, the instrument can be automatically cleaned at the end of a test.
G01N 11/14 - Investigating flow properties of materials, e.g. viscosity or plasticityAnalysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane
E21B 21/00 - Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
82.
Method for proppant suspension and suspension parameter optimization based on bubble bridge effect
The present invention discloses a method for proppant suspension and suspension parameter optimization based on bubble bridge effect, comprising: select a proppant and hydrophobically modify its surface to obtain a hydrophobically surface-modified proppant; prepare a bubbly fracturing base fluid; make the first optimization of the base fluids according to the average radius of the proppant and the average radius of the bubbles of the base fluids; optimally select the base fluids selected for the second time according to the interaction energy between the proppant particle and the bubble after the hydrophobically surface-modified proppant mixed with the base fluid; the basic parameters of the bubbly fracturing base fluid selected at the third time were used for the perfect selection for proppant suspension. The present invention establishes a procedure on experimental evaluation and parameter calculation optimization by suspending fracturing proppant with the bubble bridge effect on the hydrophobic surface.
A split-type worm and a transmission mechanism thereof. The transmission mechanism at least comprises: a worm gear (100), which at least has a rotation axis and is capable of rotating about the axis, wherein a plurality of rolling grooves (130) are provided in a circumferential surface of the worm gear (100); a roller (200) is mounted in the rolling groove (130); a worm (300) can be divided into a first worm (320) and a second worm (330); and the rolling groove (130) limits the roller (200) in the following split and partial surrounding manner, that is, a hemispherical portion of the roller (200) facing the worm gear (100) protrudes out of the rolling groove (130), and a plane where the roller (200) and a first rolling groove edge (130a) and a second rolling groove edge (130b) of the rolling groove (130) are located is not orthogonal to a force line (F5) where the worm (300) applies a compression action force to the roller (200).
F16H 1/16 - Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
F16H 55/22 - Toothed membersWorms for transmissions with crossing shafts, especially worms, worm-gears
F16H 57/04 - Features relating to lubrication or cooling
84.
PLANAR DOUBLE-ENVELOPING TOROIDAL WORM GEAR SET AND MANUFACTURING METHOD THEREFOR
The present invention relates to a planar double-enveloping toroidal worm gear set and a manufacturing method therefor. The planar double-enveloping toroidal worm gear set at least comprises: a worm (100) and a gear (200) having rotation axes that are non-coplanar. The worm (100) at least comprises a left half-section worm (110) and a right half-section worm (120) that are coaxially sleeved. The worm (100) is manufactured by the following method: in a machining process, a worm first rotation direction (500) in which the left half-section worm (110) rotates about a worm rotation axis (140) is opposite to a worm second rotation direction (510) in which the right half-section worm (120) rotates around the worm rotation axis (140). Compared with common cylindrical worm drive, the toroidal worm drive can simultaneously contact more worm gear teeth to achieve multi-tooth contact and double-line contact. An included angle between a contact line and the relative sliding speed direction is close to 90°, so that a lubricating oil film is easily formed. The comprehensive curvature radius between meshed tooth surfaces is large, and the bearing capacity is stronger.
F16H 1/16 - Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
F16H 55/28 - Special devices for taking up backlash
B23P 15/14 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
85.
Method for identifying reef-shoal reservoir in faulted lacustrine basin based on “basement structure-paleogeomorphology-seismic facies” progressive constraint
A method for identifying a reef-shoal reservoir in a faulted lacustrine basin based on a basement structure-paleogeomorphology-seismic facies progressive constraint, including: analyzing a basement structure of a work area; establishing a paleogeomorphology classification standard according to thickness, reflection structure and stratigraphic dip; based on well-seismic calibration and forward modeling, establishing a seismic facies classification standard for reef-shoal facies belts under different paleo-geomorphic conditions, and quantitatively predicting and describing a reservoir in the reef-shoal facies belts using seismic facies-controlled inversion; and according to analysis results of basement structure characteristic, paleogeomorphology classification and seismic facies, establishing a method for predicting a favorable reservoir.
State Grid Sichuan Electric Power Research Institute (China)
Inventor
Wang, Wei
Griffiths, Denwood Vaughan
Yang, Wangzhifu
Bu, Xianghang
Abstract
c, and compute overturning moments of slid masses above and below external water level of the critical slip surface. Step 6: resolve an equivalent unit weight. Step 7: resolve the factor of safety FS.
The invention relates to a displacement measuring device and a velocity measuring method of a drilling traction robot. The measuring device comprises a support bar, a stopper, a hydraulic, a piston of the hydraulic, a displacement sensor, a seal baffle, a waveguide, a magnetic ring, and a magnetic ring support plate. The invention can realize instant measurement and instant feedback of the velocity of the drilling traction robot and can provide data reference for automatic drilling of the drilling traction robot.
G01D 5/14 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelinesProtecting measuring instruments in boreholes against heat, shock, pressure or the like
E21B 47/26 - Storing data down-hole, e.g. in a memory or on a record carrier
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
A method for monitoring large deformation of a surrounding rock of a tunnel based on an automatic targeting and ranging system includes: acquiring, by a camera module, a target monitoring image; identifying a center image position in the target monitoring image; performing, by a laser ranging module, an automatic targeting and ranging task according to the center image position; and calculating a deformation offset of each target of left wall targets, right wall targets and a vault target based on an automatic targeting and ranging result corresponding to the target. The method solves the problem that a laser ranging device fails to measure a target at a fixed angle and obtains a real and accurate deformation offset thereby greatly improving the reliability of the large deformation monitoring result of the surrounding rock of the tunnel.
Disclosed is a 1,4-sulfobridged polycyclic compound containing a dihydrobenzofuran structure, belonging to the field of organic synthesis, and having a structure as shown in formula (I). Further disclosed is a preparation method therefor comprising: dissolving 2-nitrobenzofuran (II) and 5H-thiazolinone (III) in an organic solvent, then adding a molecular sieve and a chiral catalyst, stirring to react at room temperature under the protection of argon, and after the reaction is completed, separating and purifying to obtain a 1,4-sulfobridged polycyclic compound containing a dihydrobenzofuran structure. The multi-ring compound provided by the present invention has a dihydrobenzofuran and a 1,4-sulfobridged piperidinone substructure. Also disclosed is a use of the compound in the preparation of an anti-tumor drug, and the compound has good potential value in anti-tumor drug research. The preparation method of the present invention has the advantages of novelty, simplicity, convenient operation, mild reaction conditions, high yield, high stereoselectivity, etc.
A dynamic damage evaluation instrument of drilling fluid based on a glass core includes a controller and a support. A kettle body is provided on the support, a well for receiving drilling fluid is provided inside the kettle body, and a well cover is provided at an upper end of the kettle body. A core holding assembly communicating with the well is provided at a side of the kettle body, and a metering assembly is movably provided at the other end of the core holding assembly. A stirrer for stirring drilling fluid is provided inside the well, and a power component for driving the stirrer is provided outside the kettle body. A data detection hole for mounting a temperature and pressure sensor and a pressurization hole for mounting a pressurization device are formed on the well cover.
Provided are an oxindole derivative and a pharmaceutical use thereof. The structure of the oxindole derivative is shown in formula (A). Experimental results show that the provided compound has significantly improved pharmacokinetic properties compared with BIBF1120, has an excellent inhibition effect on VEGFR, FGFR and PDGFR, can be used as an inhibitor of VEGFR, FGFR and/or PDGFR, as an angiogenesis inhibitor, and as a drug for preventing and/or treating various tumors including pharyngeal squamous cell carcinoma, and has wide application prospects.
An unmanned aerial vehicle (UAV)-based intelligent anomaly identification method for petroleum pipeline inspection is provided. The precise UAV cruise technology is combined with a target detection algorithm to design an intelligent petroleum pipeline inspection method, which realizes fast anomaly detection for petroleum pipeline inspection based on the existing computer processing capability. In addition, a lot of optimization algorithms and improvements are made for target detection under special working conditions of UAV inspection, and a dedicated target detection network model adapted to these conditions is trained. The UAV-based intelligent anomaly identification method realizes accurate, real-time anomaly reporting for petroleum pipeline inspection, reduces the blindness of manual inspection, greatly improves inspection efficiency, reduces labor costs, and has practicability.
G01V 3/165 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for use during transport, e.g. by a person, vehicle or boat operating with magnetic or electric fields produced or modified by the object or by the detecting device
F17D 5/00 - Protection or supervision of installations
A system for pumping lubricant in a gas transportation pipeline includes a pipeline robot and a control terminal system. The pipeline robot includes a lubricant position detection, module, a lubricant pumping module, an electro-hydraulic control system, a data acquisition and processing system, and a lubricant sucking port. The location at which the lubricant deposits can be detected online, and the lubricant staving in the gas transportation pipeline can be removed in real time. The system is highly automatic and efficient. Resistance against the natural as transportation is reduced effectively, the efficiency of transporting the natural gas is improved, and safety of transporting the natural gas is ensured.
F16N 31/00 - Means for collecting, retaining, or draining-off lubricant in or on machines or apparatus
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
F16L 55/26 - Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
F16L 101/00 - Uses or applications of pigs or moles
F16N 29/00 - Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditionsUse of devices responsive to conditions in lubricating arrangements or systems
F17D 5/00 - Protection or supervision of installations
95.
Method for splicing vector polygon regions with holes
SICHUAN TIANYI ECOLOGICAL GARDEN GROUP CO. LTD (China)
CHENGDU UNIVERSITY OF TECHNOLOGY (China)
Inventor
Deng, Fei
Yu, Siling
Wang, Yufan
Huang, Yuanxiang
Wang, Lina
Abstract
The present invention discloses a method for splicing vector polygon regions with holes, comprising the steps of: acquiring any two vector polygon regions A1 and A2 to be spliced, the outer frame P1 of A1 and the outer frame P2 of A2; judging whether P1 and P2 have overlapping parts; storing the connection relationship of the non-overlapping edges and the non-overlapping edges of P1 and P2 in a data table T; performing intersection on the overlapping edges of P1 and P2 and storing the overlapping edges in the data table T; traversing the data table T, finding the connection relationship of edges, and constructing the splicing of vector polygon regions. According to the scheme, the present invention has the advantages of wide application range, high splicing efficiency and the like, and has high practical value and popularization value in the technical field of vector graphics splicing.
CHENGDU UNIVERSITY OF INFORMATION TECHNOLOGY (China)
CHENGDU UNIVERSITY OF TECHNOLOGY (China)
SOUTHWEST JIAOTONG UNIVERSITY (China)
Inventor
Zhang, Gexiang
Yang, Qiang
Deng, Bin
Yao, Guangle
Zhang, Liang
Lei, Yue
Xu, Xin
Li, Zhiwei
Wang, Qi
Zhao, Jinyu
He, Dong
Wang, Cong
Liao, Jianyu
He, Peiheng
Zuo, Rong
Abstract
A sea creature cleaning robot for an intake tunnel for a nuclear power plant. The robot consists of three parts, i.e., a frame (7), cutter assemblies (1), and walking wheel assemblies (2); the frame (7) is used for mounting and fixing cutter mounting seats and crawler wheels; the walking wheel assemblies (2) mounted on the frame (7) enable the entire device to normally walk in a tunnel; the cutter assemblies (1) control the height of cutters (108) by means of hydraulic cylinders to make the cutters contact the inner wall of the tunnel, and the hydraulic cylinders drive the saw-toothed cutters (108) to move back and forth to remove sea creatures attached to the inner wall of the tunnel; the cutter assemblies (1) are uniformly distributed on the frame (7), so as to ensure full coverage of the cleaning range of the cross section of the tunnel. The robot can clean sea creatures in tunnels in place of manual work, circular cutting technology is used, and the cleaning efficiency is significantly improved.
CHENGDU KANGPUSHEN PETROLEUM TECHNOLOGY DEVELOPMENT CO., LTD (China)
Chengdu University of Technology (China)
Inventor
Li, Xiangchen
Zhang, Fan
Yang, Shan
Lin, Yi
Chen, Yousheng
Abstract
The invention relates to a pressure oscillation simulation device of deep coalbed methane and a method thereof. The device includes: a box, a liquid discharge pipe arranged on a bottom portion of the box, a gas source connected to the box through a gas injection pipe, a water source connected to the box through a drainpipe that includes a branch pipe; a measuring system including a pressure measuring member and a liquidometer. The present disclosure can simulate the coalbed pressure oscillation in a coalbed gas exploitation process and be of simple structure and high reliability, and can simulate influences of the pressure oscillation on a wellbore and a stratum environment in the coalbed exploitation process to provide reliable data support for an actual coalbed exploitation; the simulation method of the present disclosure can accurately simulate the pressure oscillation of the wellbore and the stratum.
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
The present invention relates to an anti-adhesion crushing tool for crushing damp ores. The anti-adhesion crushing tool can effectively improve the current working environment in attapulgite crushing, and is beneficial to effectively improve the anti-adhesion properties of the attapulgite clay.
Test device for simulating longitudinal-lateral-torsional coupled nonlinear vibration of drill string of deepwater riserless drilling and method therefor
The present invention discloses a testing device and method for simulating longitudinal-transverse-torsional coupled nonlinear vibration of a drill string in deep-water riser-free drilling. The testing device comprises a pool (1), a motor (2) and a hook load adjustment device (3), wherein a guide wheel (4) is provided on the top of the pool (1); a support seat A (5) and a support seat B (6) are fixed on the bottom surface of the pool (1); an organic glass tube (8) is fixed between the support seat A (5) and the support seat B (6); a casing (9) is respectively provided on the top surface of the support seat B (6) and the top surface of the trailer (7); the left end of the plastic tube (10) extends into the organic glass tube (8) along the axis of the organic glass tube (8). The present invention further discloses a simulation method. The present invention has the following beneficial effects: the structure is compact; the longitudinal-transverse-torsion coupled vibration responses of the drill string under different rotating speeds of the drill string, ocean flow rates, flow rates of the drilling fluid, torsional excitations and longitudinal excitations at the bottom of the formation section is simulated, thereby filling up the blank in the riser-free drilling system.
A method of low-frequency seismic data enhancement for improving the characterization precision of a deep carbonate reservoir includes: first performing inversions on an input seismic data set to obtain the corresponding reflection coefficients and average seismic wavelet; then constructing a seismic wavelet with rich low-frequency information; and finally, performing convolution on the seismic wavelet with rich low-frequency information and the reflection coefficients to obtain seismic data with rich low-frequency information and enhanced low-frequency energy. In the present invention, changes of the seismic data in a work area in transverse and longitudinal directions are taken into consideration, and processing parameters can be quickly determined according to actual conditions of the work area to obtain an optimal processing effect. In this way, the characterization quality of geological anomalies, such as a fault, a fracture system, or the like, in a deep carbonate reservoir can be improved significantly.
G01V 1/36 - Effecting static or dynamic corrections on records, e.g. correcting spreadCorrelating seismic signalsEliminating effects of unwanted energy
patents
