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7549470 |
Solution mining and heating by oxidation for treating hydrocarbon containing formations
A method for treating an oil shale formation comprising nahcolite includes providing a first fluid to a portion of the formation. A second fluid is produced from the portion. The second fluid...
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7520325 |
Enhanced hydrocarbon recovery by in situ combustion of oil sand formations
The present invention is a method and apparatus for the enhanced recovery of petroleum fluids from the subsurface by in situ combustion of the hydrocarbon deposit, from injection of an oxygen rich...
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7493953 |
Oilfield enhanced in situ combustion process
A process for improved safety and productivity when undertaking oil recovery from an underground reservoir by the toe-to-heel in situ combustion process employing a horizontal production well....
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7096941 |
In situ thermal processing of a coal formation with heat sources located at an edge of a coal layer
A coal containing 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...
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7048051 |
Recovery of products from oil shale
A process and system for recovering hydrocarbonaceous products from in situ oil shale formations. A hole is drilled in the oil shale formation and a processing gas inlet conduit is positioned...
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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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7017661 |
Production of synthesis gas from a coal formation
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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7013972 |
In situ thermal processing of an oil shale formation using a natural distributed combustor
An 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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6991031 |
In situ thermal processing of a coal formation to convert a selected total organic carbon content into hydrocarbon products
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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6973967 |
Situ thermal processing of a coal formation using pressure and/or temperature control
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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6953087 |
Thermal processing of a hydrocarbon containing formation to increase a permeability of the formation
A hydrocarbon containing 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...
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6923258 |
In situ thermal processsing of a hydrocarbon containing formation to produce a mixture with a selected hydrogen content
A hydrocarbon containing 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...
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6902003 |
In situ thermal processing of a hydrocarbon containing formation having a selected total organic carbon content
A hydrocarbon containing 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. A formation to...
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6880635 |
In situ production of synthesis gas from a coal formation, the synthesis gas having a selected H2 to CO ratio
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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6877554 |
In situ thermal processing of a hydrocarbon containing formation using pressure and/or temperature control
A hydrocarbon containing 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...
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6763886 |
In situ thermal processing of a coal formation with carbon dioxide sequestration
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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6739394 |
Production of synthesis gas from a hydrocarbon containing formation
A hydrocarbon containing 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...
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6732796 |
In situ production of synthesis gas from a hydrocarbon containing formation, the synthesis gas having a selected H2 to CO ratio
A hydrocarbon containing 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...
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6719047 |
In situ thermal processing of a hydrocarbon containing formation in a hydrogen-rich environment
A hydrocarbon containing 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...
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6712135 |
In situ thermal processing of a coal formation in reducing environment
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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6413016 |
Methods of extracting liquid hydrocardon contaminants from underground zones
Methods of extracting liquid hydrocarbon contaminants from underground zones are provided. The methods are basically comprised of the steps of introducing a hot purge gas into an underground zone...
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6412557 |
Oilfield in situ hydrocarbon upgrading process
A well configuration is provided comprising an injection well ( 102 ) completed relatively high in an oil reservoir ( 100 ) and a production well ( 103-106 ) completed relatively low in the...
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6328104 |
Upgrading and recovery of heavy crude oils and natural bitumens by in situ hydrovisbreaking
A process is disclosed for the in situ conversion and recovery of heavy crude oils and natural bitumens from subsurface formations using either a continuous operation with one or more vertical...
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6016868 |
Production of synthetic crude oil from heavy hydrocarbons recovered by in situ hydrovisbreaking
An integrated process is disclosed for treating, at the surface, production fluids recovered from the application of in situ hydrovisbreaking to heavy crude oils and natural bitumens deposited in...
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6016867 |
Upgrading and recovery of heavy crude oils and natural bitumens by in situ hydrovisbreaking
A process is disclosed for the in situ conversion and recovery of heavy crude oils and natural bitumens from subsurface formations using either a continuous operation with one or more injection and...
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5868202 |
Hydrologic cells for recovery of hydrocarbons or thermal energy from coal, oil-shale, tar-sands and oil-bearing formations
A system for recovery of hydrocarbons or thermal energy from host-rock fotions bearing coal, oil-shale, tar-sands or oil by use of a hydrologic cell which conveys a reacting fluid under pressure to...
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5626191 |
Oilfield in-situ combustion process
A well arrangement is used wherein the production wells are generally horizontal, positioned low in the reservoir and arranged generally perpendicularly to a laterally extending combustion front....
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5458193 |
Continuous method of in situ steam generation
A continuous method of in situ steam generation for steamflooding which comprises injecting a mixture of hydrocarbons to serve as fuel for in situ combustion and water to be converted into steam by...
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5456315 |
Horizontal well gravity drainage combustion process for oil recovery
An in-situ combustion method is provided for the recovery of viscous oil from an oil-bearing reservoir. A linear array of vertical air injection wells is drilled into the reservoir; the wells are...
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5449038 |
Batch method of in situ steam generation
A batch method of in situ steam generation for steamflooding which comprises injecting hydrocarbons into an upper zone of the formation to serve as fuel for in situ combustion, injecting oxidant...
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5443118 |
Oxidant enhanced water injection into a subterranean formation to augment hydrocarbon recovery
A method is disclosed for recovering crude oil from a subterranean formation. The invention utilizes the introduction of water containing a salt, which is capable of decomposing to generate an...
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5362318 |
Consolidation agent and method
A sand consolidating method is provided for use in a borehole within an unconsolidated or loosely consolidated oil or gas reservoir which is likely to introduce substantial amounts of sand into the...
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5358565 |
Steam injection profile control agent and process
A method and composition for controlling the profile of a formation where temperatures higher than 400° F. are encountered. An aqueous solution of an organoammonium silicate, alkali metal or...
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5358564 |
In-situ cementation for profile control
A method and composition for controlling the profile of a formation where temperatures higher than 200° F. are encountered. An aqueous solution of an organoammonium silicate, alkali metal or...
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5358563 |
In-situ silica cementation for profile control during steam injection
A method for controlling the profile of a formation where temperatures higher than 200° F. are encountered. Initially, an aqueous solution of an alkali metal hydroxide, ammonium hydroxide or...
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5339897 |
Recovery and upgrading of hydrocarbon utilizing in situ combustion and horizontal wells
Disclosed are a method and apparatus for recovering and/or upgrading hydrocarbons utilizing in situ combustion and horizontal wells. Vertical injection wells are utilized to inject an oxidant into...
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5287926 |
Method and system for underground gasification of coal or browncoal
A method for underground gasification of coal or browncoal in an inclined coal seam, in which a substantially uniform gasification or combustion front is maintained by filling the cavity generated...
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5062483 |
Treatment for reducing water coning in an oil reservoir
The invention has application only to a first oil well producing oil having a high water cut, said oil well being completed in a reservoir having an increased gas saturation, in the vicinity of the...
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5027896 |
Method for in-situ recovery of energy raw material by the introduction of a water/oxygen slurry
The present invention relates to methods of recovering energy materials, such as oil, shale oil or hydrocarbon gas, by providing limited combustion of these energy materials within an underground...
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4993490 |
Overburn process for recovery of heavy bitumens
A method for the production of bitumen from a subterranean reservoir having a zone of increased effective permeability therein. In particular, a first well is in fluid communication with the zone...
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4984635 |
Thermal barriers for enhanced oil recovery
A process is described to direct heat towards a productive interval of a reservoir during a thermal enhanced oil recovery (EOR) operation. A chemical composition suitable for producing a rigid...
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4961467 |
Enhanced oil recovery for oil reservoir underlain by water
A method for recovering viscous oil from a subterranean, viscous oil-containing formation underlain by a water zone. Steam is injected into the formation via the injection well at the oil/water...
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4867238 |
Recovery of viscous oil from geological reservoirs using hydrogen peroxide
Viscous oil in a geological formation is recovered by producing hydrogen peroxide near the formation, injecting hydrogen peroxide into the formation to effect its decomposition and reaction of...
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4865130 |
Hot gas generator with integral recovery tube
A housing surrounds a portion of a tubular member forming a combustion chamber in the annulus between the housing and the tubular member. The housing has an upper end and a lower end with a port...
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4860827 |
Process and device for oil recovery using steam and oxygen-containing gas
Oil is recovered from an underground formation by the use of steam and a gas rich in oxygen. In a priming stage, high quality saturated steam or superheated steam is injected into the formation to...
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4844155 |
Process for increasing the yield of oil reservoirs
An improvement is presented in a process for increasing the yield of production wells in crude oil reservoirs having inhomogenous strata, wherein an aqueous solution of a salt is injected through...
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4834178 |
Process for injection of oxidant and liquid into a well
A process and apparatus for fireflooding with liquid heat transfer media comprising injection of oxidant gas and liquid heat transfer media into a well through separate conduits, the liquid conduit...
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4809781 |
Method for selectively plugging highly permeable zones in a subterranean formation
Relatively high permeability zones in a subterranean formation vertically bounded by relatively low permeability zones are selectively plugged by first injecting a solidifiable selective gel...
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4804043 |
Process for selective placement of polymer gels for profile control in thermal oil recovery
High permeable thermally fluid swept zones in an oil containing formation are selectively plugged by a high temperature selective gel-forming solution without plugging the less permeable unswept...
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4776638 |
Method and apparatus for conversion of coal in situ
A method for the electro-thermal and electrochemical underground conversion of coal into oil and by-products comprises the steps of inserting an underground probe into a bore hole until the probe...
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