A method for sealing a section of a well with a downhole plugging assembly using a basket containing a mineral insulated heater by running the downhole plugging assembly through the well and activating the mineral insulated heater. The heater melts the eutectic metal alloy to fill the downhole location with the melted alloy. The mineral insulated heater is deactivated and the melted eutectic alloy cools to form a plug. A method for sealing a section of a well using a downhole plugging assembly containing a carrier fluid and a mineral insulated heater. The method includes running the downhole plugging assembly into the well, flowing the eutectic alloy suspended in the carrier fluid, connecting the electrical connection to a power source, and activating the mineral insulated heater to melt the eutectic alloy to fill the downhole location. The method includes allowing the eutectic alloy to cool to form a eutectic plug.
A method for sealing a section of a well with a downhole plugging assembly using a basket (20) containing a mineral insulated heater (23) by running the downhole plugging assembly through the well and activating the mineral insulated heater (23). The heater (23) melts the eutectic metal alloy (26) to fill the downhole location with the melted alloy. The mineral insulated heater (23) is deactivated and the melted eutectic alloy cools to form a plug (32). A method for sealing a section of a well using a downhole plugging assembly containing a carrier fluid and a mineral insulated heater (23). The method includes running the downhole plugging assembly into the well, flowing the eutectic alloy suspended in the carrier fluid, connecting the electrical connection to a power source, and activating the mineral insulated heater (23) to melt the eutectic alloy (26) to fill the downhole location. The method includes allowing the eutectic alloy to cool to form a eutectic plug (32).
A drilling mud containing sepiolite and potassium carbonate and which is free of potassium chloride is useful in high temperature reservoirs, such as geothermal wells.
A fluid composition including a mixed metal oxide viscosifier, a clay viscosifier, and solid eutectic metal alloy particles. A method 100 including pumping a drilling fluid downhole in a wellbore. The drilling fluid includes water, a mixed metal oxide viscosifier, a clay viscosifier, and solid eutectic metal alloy particles. The method 100 further including allowing the drilling fluid to reach a target zone with elevated permeability and forming a filter cake containing solid eutectic metal alloy particles in the target zone. The method 100 including heating the filter cake to a temperature greater than the melting temperature of the eutectic metal alloy particles, allowing the particles to melt and become liquid eutectic metal alloy particles. The method 100 including discontinuing heating and allowing the filter cake to cool to a temperature lower than the melting temperature of the solid eutectic metal alloy particles to produce a strengthened filter cake.
C09K 8/16 - Clay-containing compositions characterised by the inorganic compounds other than clay
C09K 8/504 - Compositions based on water or polar solvents
C09K 8/516 - Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls characterised by their form or by the form of their components, e.g. encapsulated material
5.
EUTECTIC METAL ALLOY-CONTAINING CEMENT AND METHODS OF USE THEREOF
A method for remediating fractures in a cement structure including heating the cement structure to a temperature at or above the melting temperature of the eutectic metal alloy particles (102) to allow the particles to flow in liquid state into the fractures in the cement structure (104) until the heat source is discontinued (106), allowing the particles to cool and solidify (108).
C04B 22/04 - Metals, e.g. aluminium used as blowing agent
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
C09K 8/467 - Compositions for cementing, e.g. for cementing casings into boreholesCompositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
C09K 8/42 - Compositions for cementing, e.g. for cementing casings into boreholesCompositions for plugging, e.g. for killing wells
6.
Eutectic metal alloy-containing cement and methods of use thereof
A method for remediating fractures in a cement structure including heating the cement structure to a temperature at or above the melting temperature of the eutectic metal alloy particles to allow the particles to flow in liquid state into the fractures in the cement structure until the heat source is discontinued, allowing the particles to cool and solidify.
C09K 8/467 - Compositions for cementing, e.g. for cementing casings into boreholesCompositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
A fluid composition including a mixed metal oxide viscosifier, a clay viscosifier, and solid eutectic metal alloy particles. A method including pumping a drilling fluid downhole in a wellbore. The drilling fluid including water, a mixed metal oxide viscosifier, a clay viscosifier, and solid eutectic metal alloy particles. The method further including allowing the drilling fluid to reach a target zone with elevated permeability and forming a filter cake containing solid eutectic metal alloy particles in the target zone. The method including heating the filter cake to a temperature greater than the melting temperature of the eutectic metal alloy particles, allowing the particles to melt and become liquid eutectic metal alloy particles. The method including discontinuing heating and allowing the filter cake to cool to a temperature lower than the melting temperature of the solid eutectic metal alloy particles to produce a strengthened filter cake.
A eutectic metal alloy is placed through a coiled tubing into a wellbore formed in a subterranean formation. The eutectic metal alloy includes a mixture of multiple metals. The eutectic metal alloy has a melting temperature that is less than a melting temperature of each individual metal of the multiple metals making up the eutectic metal alloy. The eutectic metal alloy is heated to a temperature equal to or greater than the melting temperature of the eutectic metal alloy to liquefy the eutectic metal alloy. The liquefied eutectic metal alloy is flowed from the wellbore and into the subterranean formation, thereby exposing the liquefied eutectic metal alloy to a specified downhole temperature within the subterranean formation and causing the liquefied eutectic metal alloy to solidify to form a seal. The seal prevents fluid from flowing from the wellbore and into the subterranean formation.
Board of Regents, The University of Texas System (USA)
Inventor
Amer, Ahmed Said
Van Oort, Eric
Abstract
Compositions for treating a wellbore include an exothermic additive capable of initiating an exothermic event following contact with a carrier fluid. The exothermic additive can have a coating that delays the exothermic event after contact with the carrier fluid. Methods disclosed herein include emplacing a fluid loss treatment composition in an interval of a wellbore, the fluid loss treatment including: a metallic fluid loss additive; an exothermic additive; and a carrier fluid; and reacting the exothermic additive to initiate an increase in temperature in the interval of the wellbore above a melting point of the metallic fluid loss additive; and converting the metallic fluid loss additive to a molten fluid loss additive; and treating the interval of the wellbore with the molten fluid loss additive.
C09K 8/516 - Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls characterised by their form or by the form of their components, e.g. encapsulated material
10.
Float angle probes for monitoring wellbore fluid composition and methods of using the same
A method includes conveying a wellbore fluid into a container of a wellsite system, the container having a float angle hydrometer housed therein and the float angle hydrometer including a buoyant structure, and a measuring component housed within or attached to the buoyant structure. The method further includes determining one or more fluid properties of the wellbore fluid with the float angle hydrometer based on an inclination of the buoyant structure within the wellbore fluid, the one or more fluid properties including at least one of density, specific gravity, or fluid level.
G01N 9/00 - Investigating density or specific gravity of materialsAnalysing materials by determining density or specific gravity
G01F 23/64 - Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type
BOARD OF REGENTS, THE UNIVERSITY OF TEXAS AT AUSTIN (USA)
Inventor
Ahmed, Amer, Said
Van Oort, Eric
Abstract
Compositions for treating a wellbore include an exothermic additive capable of initiating an exothermic event following contact with a carrier fluid. The exothermic additive can have a coating that delays the exothermic event after contact with the carrier fluid. Methods disclosed herein include emplacing a fluid loss treatment composition in an interval of a wellbore, the fluid loss treatment including: a metallic fluid loss additive; an exothermic additive; and a carrier fluid; and reacting the exothermic additive to initiate an increase in temperature m the interval of the wellbore above a melting point of the metallic fluid loss additive; and converting the metallic fluid loss additive to a molten fluid loss additive; and treating the interval of the wellbore with the molten fluid loss additive.
C09K 8/516 - Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls characterised by their form or by the form of their components, e.g. encapsulated material
E21B 33/138 - Plastering the borehole wallInjecting into the formation
12.
Probe arrays for monitoring wellbore fluid composition and methods of using the same
Methods include the use of a probe array that includes a flotation device configured to maintain the probe array adjacent a surface of a wellbore fluid; an acquisition module secured to the flotation device such that the acquisition module is positioned below the surface of the wellbore fluid, and that include one or more of a dissolved oxygen probe, a pH probe, a turbidity probe, or a conductivity probe; transmitter configured to receive data acquired from the acquisition module and transmit the data to a computer system configured to receive the data from the transmitter and configured to perform the steps of: processing the data to determine one or more wellbore fluid properties, displaying the one or more wellbore fluid properties and/or one or more remedial actions.
A system for simulating in situ drilling and treatment conditions on a core sample from a subterranean formation. The system re-creates various subterranean loads and temperatures on a test sample representative of actual in situ conditions from the particular formation while a test structure within the system performs drilling activities on the core sample using drilling and treating under evaluation for use in the particular subterranean formation. Thus, the impact on selected drilling and treating fluids can be evaluated as well as the impact those fluids had on a sample from the subterranean formation under in situ conditions.
G01N 3/18 - Performing tests at high or low temperatures
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
A system for simulating in situ drilling and treatment conditions on a core sample from a subterranean formation is disclosed. The system re-creates various subterranean loads and temperatures on a test sample representative of actual in situ conditions from the particular formation while a test structure within the system performs drilling activities on the core sample using drilling and treating under evaluation for use in the particular subterranean formation. Thus, the impact on selected drilling and treating fluids can be evaluated as well as the impact those fluids had on a sample from the subterranean formation under in situ conditions.
E21B 49/00 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
E21B 41/00 - Equipment or details not covered by groups
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
01 - Chemical and biological materials for industrial, scientific and agricultural use
42 - Scientific, technological and industrial services, research and design
Goods & Services
Chemical drilling fluids for use in subterranean wells, namely, drilling muds, completion fluids, workover fluids and wellbore fluids; chemical additives for oil drilling fluids; drilling muds and chemical drilling fluids for use in oil well drilling Engineering services in the field of oil and gas, namely, developing subterranean wellbore fluids, environmental planning, analysis of data from well sites in the nature of well fluid design, well drill cuttings, well formation stability, well borehole stability and well fluid circulation, and technical engineering advice on the use of products for drilling and extracting hydrocarbons from subterranean wells
01 - Chemical and biological materials for industrial, scientific and agricultural use
Goods & Services
Additive fluid chemicals used in oil and gas drilling operations to enhance the stability, rheology, flocculation, clay inhibition and shale inhibition of the drilling fluid, and for reducing torque, reducing drag, enhancing the penetration rate and the life of the drilling bit used in the oil and gas drilling operation
01 - Chemical and biological materials for industrial, scientific and agricultural use
40 - Treatment of materials; recycling, air and water treatment,
Goods & Services
(1) Drilling fluid chemicals for use in oil, gas, water and assay mining well drilling (1) Custom chemical blending for oil, gas, water and assay mining well drilling fluids for others
A water-based drilling fluid containing high molecular weight crosslinked polyacrylic acid as viscosifying agent exhibits stability at well temperatures in excess of 150° C. The drilling fluid may further contain a lubricant, weighting agent and/or a wetting agent as well as laponite clay. The aqueous based drilling fluid exhibits a coefficient of friction which is substantially close to the coefficient of friction of oil based drilling muds.
A method of drilling a gas or oil well consists of use of a water-based drilling fluids containing high molecular weight crosslinked polyacrylic acid as viscosifying agent. The drilling fluid may further contain a lubricant, weighting agent and/or a wetting agent as well as laponite clay. The aqueous based drilling fluid exhibits a coefficient of friction which is substantially close to the coefficient of friction of oil based drilling muds. The drilling fluid exhibits stability at well temperatures in excess of 150 C.
C09K 8/12 - Clay-free compositions containing synthetic organic macromolecular compounds or their precursors
F17D 1/17 - Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity by mixing with another liquid
A method of drilling a gas or oil well consists of use of a water-based drilling fluids containing high molecular weight crosslinked polyacrylic acid as viscosifying agent. The drilling fluid may further contain a lubricant, weighting agent and/or a wetting agent as well as a synthetic silicate or smectite clay. The aqueous based drilling fluid exhibits a coefficient of friction which is substantially close to the coefficient of friction of oil based drilling muds. The drilling fluid exhibits stability at well temperatures in excess of 150° C.
01 - Chemical and biological materials for industrial, scientific and agricultural use
Goods & Services
Drilling fluid chemicals to provide high penetration rates, lubricity, wellbore inhibition and production zone protection in oil, gas [ and water ] drilling [ and assay mining ]
01 - Chemical and biological materials for industrial, scientific and agricultural use
40 - Treatment of materials; recycling, air and water treatment,
Goods & Services
Drilling fluid chemicals for use in oil, gas, water and
assay mining well drilling. Custom chemical blending for oil, gas, water and assay
mining well drilling fluids for others.
