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7610964 |
Positive displacement pump
A submersible pumping system for use downhole that includes a housing containing an expandable fluid, that when expanded pushes a piston that in turn pumps wellbore fluid to the surface. The...
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7610962 |
Sour gas injection for use with in situ heat treatment
Systems, methods, and heaters for treating a subsurface formation are described herein. At least one method for providing acidic gas to a subsurface formation is described herein. The method may...
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7604054 |
Enhanced hydrocarbon recovery by convective heating of oil sand formations
The present invention involves a method and apparatus for enhanced recovery of petroleum fluids from the subsurface by convective heating of the oil sand formation and the heavy oil and bitumen in...
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7581593 |
Apparatus for treating fluid streams
An apparatus and method for increasing and regulating temperature, pressure and fluid viscosities of fluid streams found in oil and gas production. Applicant's apparatus regulates and increases...
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7575052 |
In situ conversion process utilizing a closed loop heating system
An in situ conversion system for producing hydrocarbons from a subsurface formation is described. The system includes a plurality of u-shaped wellbores in the formation. Piping is positioned in at...
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7559367 |
Temperature limited heater with a conduit substantially electrically isolated from the formation
A system for heating a hydrocarbon containing formation is described. A conduit may be located in an opening in the formation. The conduit includes ferromagnetic material. An electrical conductor...
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7546880 |
Extracting gas hydrates from marine sediments
A process for extracting hydrocarbon gases from marine sediment hydrates. In one embodiment, the process includes drilling from a sea floor into a hydrate rich subsea sediment to form at least one...
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7510000 |
Reducing viscosity of oil for production from a hydrocarbon containing formation
Certain embodiments provide a method for treating a hydrocarbon containing formation. The method includes applying electrical current to one or more electrical conductors located in an opening in...
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7490665 |
Variable frequency temperature limited heaters
Certain embodiments provide a heating system configured to heat at least a part of a subsurface formation. The system includes an electrical power supply. A heater section includes one or more...
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7490028 |
Method, apparatus and system for pore pressure prediction in presence of dipping formations
A method, apparatus and system for predicting the formation pressure ahead of a bit in a well, which includes using measurements taken in shales and permeable formations at or near the bit together...
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7484561 |
Electro thermal in situ energy storage for intermittent energy sources to recover fuel from hydro carbonaceous earth formations
The vast North American oil shale and tar sand deposits offer the potential to make USA energy independent. However, if these deposits were produced by the existing combustion processes,...
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7481274 |
Temperature limited heaters with relatively constant current
Certain embodiments provide a system configured to heat a subsurface formation. The system includes an electrical power supply. A heater section includes one or more electrical conductors...
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7475724 |
Method of determining a fluid inflow profile of wellbore
A method of determining a fluid inflow profile along the length of a permeable inflow region of an underground wellbore comprising:
transferring heat into or from the permeable inflow region...
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7461691 |
In situ recovery from a hydrocarbon containing formation
An in situ process for treating a hydrocarbon containing formation is provided. The process may include providing heat from one or more heaters to at least a portion of the formation. The heat may...
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7449664 |
Oil and gas well alloy squeezing method and apparatus
Method and apparatus for melting a material and squeezing the melted material through casing perforations into a fault within the cement or formation of an oil or gas well. A heating tool carries...
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7445041 |
Method and system for extraction of hydrocarbons from oil shale
A system and method for extracting hydrocarbon products from oil shale using nuclear energy sources for energy to fracture the oil shale formations and provide sufficient heat and pressure to...
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7431076 |
Temperature limited heaters using modulated DC power
The invention provides a system configured to heat at least a part of a subsurface formation. The system includes: an electrical power supply configured to provide modulated direct current (DC);...
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7422063 |
Hydrocarbon recovery from subterranean formations
Recovery of viscous hydrocarbon by hot fluid injection into subterranean formations is assisted by using a specially designed and under-reamed vertical wellbore with multiple injection perforations...
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7383877 |
Temperature limited heaters with thermally conductive fluid used to heat subsurface formations
Certain embodiments provide a system including a heater. The heater includes one or more electrical conductors. The heater is configured to generate a heat output during application of electrical...
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7370704 |
Triaxial temperature limited heater
Certain embodiments provide a heater. The heater includes an inner electrical conductor. A heater section at least partially surrounds the inner electrical conductor. The heater section is...
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7353872 |
Start-up of temperature limited heaters using direct current (DC)
Certain embodiments provide a method for heating a subsurface formation. The method includes applying direct electrical current (DC) to a heater section below a first selected temperature to...
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7320364 |
Inhibiting reflux in a heated well of an in situ conversion system
Certain embodiments provide a method for treating a subsurface formation. The method includes using heaters to form a heated portion of the subsurface formation. A production conduit is used to...
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7285762 |
Sealing method and apparatus for oil and gas wells
Apparatus and method for melting material in the annulus of an oil or gas well and thereby sealing the annulus to prevent shallow gas leakage and the like. Conveniently, the material is positioned...
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7243721 |
Methods and apparatus for heating oil production reservoirs
Methods and apparatus employing inert gases injected into the lower level of sloping underground oil-bearing formations as a driving mechanism and water injected into the upper level of the...
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7225866 |
In situ thermal processing of an oil shale formation using a pattern of heat sources
A oil shale formation may be treated using an in situ thermal process. A mixture of hydrocarbons, H 2 , and/or other formation fluids may be produced from the formation. Heat may be applied to the...
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7182132 |
Linearly scalable geothermic fuel cells
A ceramic fuel cell(s) is supported in a heat conductive interconnect plate, and a plurality of plates form a conductive heater named a stack. Connecting a plurality of stacks forms a stick of fuel...
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7124820 |
Exothermic tool and method for heating a low temperature metal alloy for repairing failure spots along a section of a tubular conduit
An exothermic well tool and method of use for the repair of failure spots along a section of a first tubular conduit, such as casing, wherein the housing of the tool is heated to at least a...
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7121341 |
Conductor-in-conduit temperature limited heaters
A heater may include an electrical conductor. Applying alternating current to the electrical conductor may generate resistively heat the electrical conductor. The electrical conductor may include...
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7096953 |
In situ thermal processing of a coal formation using a movable heating element
A coal formation may be treated using an in situ thermal process. A mixture of hydrocarbons, H 2 , and/or other formation fluids may be produced from the formation. Heat may be applied to the...
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7083009 |
Pressure controlled fluid sampling apparatus and method
A formation fluid sampling tool including at least one sample tank mounted in a tool collar. The tool collar includes a through bore and is disposed to be operatively coupled with a drill string...
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7066257 |
In situ recovery from lean and rich zones in a hydrocarbon containing formation
A method for treating lean and rich zones of a hydrocarbon containing formation is provided. In one embodiment, heat from one or more heaters may be provided to at least a portion of the formation....
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7059413 |
Method for intensification of high-viscosity oil production and apparatus for its implementation
In the oil-producing industry, an apparatus can be used to increase the yield of oil wells developed by conventional methods during production of high viscosity oils. Use of the apparatus results...
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7055599 |
Electromagnetic coal seam gas recovery system
A system for recovering gas trapped within the earth includes a casing ( 24 ) sized and configured to be positioned within a borehole in the earth, the casing ( 24 ) formed of a material that is...
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7040400 |
In situ thermal processing of a relatively impermeable formation using an open wellbore
A method for treating a relatively low permeability formation containing heavy hydrocarbons in situ may include providing heat from one or more heat sources to a portion of the formation. The heat...
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7040398 |
In situ thermal processing of a relatively permeable formation in a reducing environment
A method for treating a relatively permeable formation containing heavy hydrocarbons in situ may include providing heat from one or more heat sources to a portion of the formation. The heat may be...
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7036593 |
Cement heating tool for oil and gas well completion
Apparatus and method for setting cement in the annulus of an oil or gas well during well completion or other similar well operations. An induction heating tool is lowered to a desired position...
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7004247 |
Conductor-in-conduit heat sources for in situ thermal processing of an oil shale formation
An oil shale formation may be treated using an in situ thermal process. Hydrocarbons, H 2 , and/or other formation fluids may be produced from the formation. Heat may be applied to the formation...
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6929067 |
Heat sources with conductive material for in situ thermal processing of an oil shale formation
The oil shale formation may be treated using an in situ thermal process. Heat may be provided to a section of the formation from one or more heat sources. A portion of a heat source may include...
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6824328 |
Vapor collection and treatment of off-gas from an in-situ thermal desorption soil remediation
An in situ thermal desorption system may be used to remove contamination from soil. Off-gas removed from the soil may be transported from the soil to a treatment facility by high temperature hoses...
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6752210 |
In situ thermal processing of a coal formation using heat sources positioned within open wellbores
A coal formation may be treated using an in situ thermal process. Hydrocarbons, H 2 , and/or other formation fluids may be produced from the formation. Heat may be applied to the formation to raise...
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6702041 |
Combined logging and drilling system
A system is provided for drilling and logging of a wellbore formed in an earth formation. The system comprises a drill string provided with an external recess extending in longitudinal direction of...
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6702017 |
Apparatus and method for well fluid sampling
A well fluid sampling tool ( 5 ) having a sample chamber ( 315 ) at least partly contained within an at least partially evacuated jacket ( 160, 165, 170 ), the outermost wall ( 160 ) of the jacket...
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6684948 |
Apparatus and method for heating subterranean formations using fuel cells
A fuel cell based subterranean heater for mineral extraction, in situ decontamination, or other applications. The fuel cells are preferably stacked within a casing which is then inserted into a...
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6681859 |
Downhole oil and gas well heating system and method
A down hole heating system for use with oil and gas wells which exhibit less than optimally achievable flow rates because of high oil viscosity and/or blockage by paraffin (or similar meltable...
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6664522 |
Method and apparatus for sealing multiple casings for oil and gas wells
Apparatus and method for melting material in any one or a plurality of casings of an oil or gas well and thereby sealing the annulus to prevent gas leakage and the like. The material is positioned...
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6631761 |
Wet electric heating process
A wet electric heating (“WEH”) process involves establishing electrode zones (“e-zones”) around conductors (e.g., wells) for distributing electric current and thereby generating and...
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6617556 |
Method and apparatus for heating a submarine pipeline
A novel system for inductively heating a fluid conduit using an electrical cable located proximate the fluid conduit. Electricity is conducted to the cable in either a powering mode, in which a...
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6540018 |
Method and apparatus for heating a wellbore
An electrical heater is provided, the electrical heater being useful for heating soil around a wellbore, and the heater including: a plurality of electrically conductive heater elements within a...
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6536526 |
Method for decreasing heat transfer from production tubing
A method for retarding temperature loss of fluid being produced in a well employs a fluid of low thermal conductivity in the tubing annulus. The tubing annulus extends between the production casing...
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6509557 |
Apparatus and method for heating single insulated flowlines
Apparatus and method are provided for electrically heating subsea pipelines. An electrically insulating layer is placed over the pipe in the segment of the pipeline to be heated and electrical...
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