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7543638 |
Low temperature oxidation for enhanced oil recovery
Methods and systems for enhancing oil recovery are disclosed. A method for enhancing oil recovery in a formation includes placing a catalyst in a wellbore; and introducing an oxidizing agent into...
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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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7516789 |
Hydrocarbon recovery facilitated by in situ combustion utilizing horizontal well pairs
The invention provides hydrocarbon recovery processes that may be utilized in heavy oil reservoirs. Horizontal hydrocarbon production wells may be provided below horizontal oxidizing gas injection...
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7513306 |
Method for natural gas production
A method of dissociating methane hydrate deposits in-situ is provided in which a supply of oxygen, carbon dioxide, and fuel are provided, the oxygen and the carbon dioxide are mixed to form an...
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6959761 |
In situ thermal processing of a coal formation with a selected ratio of heat sources to production wells
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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6776256 |
Method and apparatus for generating seismic waves
A method of generating seismic waves in a rock mass surrounding a well comprises the steps of: (a) providing a packer and a fluid withdrawal line within the well, wherein the packer is located...
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6488086 |
Method of thermochemical treatment of a producing formation and combustible-oxidizing compound (COC) for realizing the same
Methods for thermochemically augmenting hydrocarbon inflow from a production formation increases the treatment efficacy in the oil and gas producing industry. A combustible oxidizing compound (COC)...
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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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5488990 |
Apparatus and method for generating inert gas and heating injected gas
A downhole burner that economically generates hot inert gas and injects this gas into a subterranean formation. The burner has a nipple attached to a first tubing string that carries an oxidizer to...
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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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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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5360067 |
Vapor-extraction system for removing hydrocarbons from soil
The invention is a closed-loop, thermal process for remediating soil contaminated with hydrocarbon chemicals; it is particularly well suited for the remediation of soils containing hydrocarbons...
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4945984 |
Igniter for detonating an explosive gas mixture within a well
An active combustion zone is established in situ within a permeable hydrocarbon formation. The permeable formation is periodically charged with a combustible gas, and is thereafter subjected to a...
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4895206 |
Pulsed in situ exothermic shock wave and retorting process for hydrocarbon recovery and detoxification of selected wastes
An active combustion zone is established in situ within a permeable hydrocarbon formation. The permeable formation is periodically charged with a combustible gas, and is thereafter subjected to a...
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4793656 |
In-situ coal drying
A method for upgrading coal in-situ is disclosed in which a treatment zone is established around an energy source placed in a cavity within a coal seam and the pore structure of the coal...
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4699213 |
Enhanced oil recovery process utilizing in situ steam generation
A process for recovering hydrocarbons from a porous hydrocarbon-bearing formation comprising: (a) injecting water and oxygen into the formation through an injection means and causing at least a...
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4573530 |
In-situ gasification of tar sands utilizing a combustible gas
A subterranean, viscous oil-containing formation, e.g. tar sands, which has previously been exploited by an in-situ combustion operation to recover the maximum amount of oil therefrom and leaving a...
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4552214 |
Pulsed in situ retorting in an array of oil shale retorts
Greater product yield and quality and continuous upgrading of shale oil with hydrogen-rich, purge mode off gases is attained by pulsing in situ retorts at different phases and intervals. In the...
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4499949 |
Combined surface and in situ tar sand bitumen production
In-situ combustion of tar sand formations is improved by introducing into an unminable tar sand formation prior to initiation of in-situ combustion hydrogen sulfide produced from upgrading tar...
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4499945 |
Silane-propane ignitor/burner
A silane propane burner for an underground coal gasification process which is used to ignite the coal and to controllably retract the injection point by cutting the injection pipe. A narrow tube...
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4479540 |
Gasification of coal
This invention relates to the gasification of coal. An oxygen jet having a pointed flame is engendered in situ, so as to strike the coal with a sheath of steam. The resultant fuel gas is drawn off...
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4471839 |
Steam drive oil recovery method utilizing a downhole steam generator
Viscous oil is recovered from a subterranean, viscous oil-containing formation by a steam flooding technique wherein steam is generated in a downhole steam generator located in an injection well by...
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4470460 |
In situ retorting or oil shale
An improved method of in situ retorting of oil shale wherein a cavern of crushed shale is created within an oil shale deposit, preferably by igniting a powerful explosion within the oil shale...
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4458756 |
Heavy oil recovery from deep formations
Method of heavy oil recovery from deep formations using in-situ wet oxidation steam generation, and a generator for such purpose, comprising a feed for a coal/water slurry and a feed of oxidative...
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4454916 |
In-situ combustion method for recovery of oil and combustible gas
A method for recovering oil by injecting an oxygen-containing gas containing at least 50 vol. % oxygen into the formation to initiate an in-situ combustion operation, separately producing oil and a...
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4454915 |
In situ retorting of oil shale with air, steam, and recycle gas
A flame front is ignited and passed through an underground oil shale retort to produce shale oil. The flame front is supported by a specially blended feed gas consisting essentially of air, steam...
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4453597 |
Stimulation of hydrocarbon flow from a geological formation
Means are provided for increasing the productivity of a hydrocarbon formation by modifying the formation in the vicinity of the borehole by a succession of treatments utilizing a first fluid which...
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4436153 |
In-situ combustion method for controlled thermal linking of wells
A method of controlled thermal linking of an injection well and a production well, both penetrating an underground formation, accomplished by injecting oxidant into the annulus of the injection...
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4397352 |
In situ combustion of tar sands with injection of gases
In-situ combustion of heavy subterranean oil formations, e.g., tar sands, is improved by introducing into the oil formation a stream of a combustible gas. The stream of gas may contain a small...
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4380265 |
Method of treating a hydrocarbon producing well
A method of treating a hydrocarbon producing well involves injecting into the well a combustible mixture including a gaseous phase material. The combustible mixture is ignited to produce a quantity...
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4301875 |
Method for making holes and producing gas in coal seams
A method and apparatus for making holes in coal seams in a coal mining system in which hot working gas is employed to impinge on the coal under high pressure and speed in order to disintegrate it...
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4301866 |
Method and apparatus for igniting an in situ oil shale retort
A technique is provided for igniting an in situ oil shale retort having an open void space over the top of a fragmented mass of particles in the retort. A conduit is extended into the void space...
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4246965 |
Method for operating an in situ oil shale retort having channelling
An in situ oil shale retort contains a fragmented permeable mass of formation particles containing oil shale and has a primary combustion zone advancing through a first region having a first fluid...
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4245701 |
Apparatus and method for igniting an in situ oil shale retort
A method and apparatus for conducting such method are disclosed for igniting a fragmented permeable mass of formation particles in an in situ oil shale retort. The method is conducted by forming a...
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4241790 |
Recovery of crude oil utilizing hydrogen
Hydrogen is injected into an underground petroleum reservoir that is devoid of natural gas. Due to its high rate of diffusion, hydrogen disperses rapidly throughout the reservoir, including the...
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4193454 |
Super-active clay catalyst and use thereof
This invention relates to a super-active clay catalyst material prepared by a special method for treating clay materials, said catalyst for use in catalytic conversion of organic materials such as,...
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4191251 |
Process for recovering carbonaceous values from in situ oil shale retorting
An in situ oil shale retort containing a fragmented permeable mass of formation particles containing oil shale is formed in a subterranean formation containing oil shale. To retort oil shale in the...
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4183405 |
Enhanced recoveries of petroleum and hydrogen from underground reservoirs
Hydrogen and other gases that are miscible in petroleum are injected into an underground reservoir to the extent that the volume of hydrogen exceeds the absorption capacity of the petroleum,...
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4127171 |
Method for recovering hydrocarbons
A two-step method for recovering hydrocarbons from a subterranean formation in which in situ combustion is first initiated in the formation by injection of air, for example, through an injection...
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4105251 |
Dispersion of catalysts with explosives for in situ mining of carbonaceous minerals
Disclosed is a process for generating synthetic fuels from carbonaceous minerals such as oil shale and coal by dispersing a catalytic agent by suitable explosive means into carbonaceous deposits....
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4099566 |
Vicous oil recovery method
Solid hydrocarbon materials remaining in a subsurface earth formation such as, for example, the coke residue remaining in a subterranean tar sand deposit which has previously been exploited by...
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4086960 |
Apparatus for hydrocarbon recovery from earth strata
A combination structure adapted for use in a catalytic process for stimulating the recovery of hydrocarbons from porous and permeable hydrocarbon bearing strata in earth formations utilizing at...
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4057107 |
Method of initiating underground in-situ combustion
A method for the initiation of an in-situ combustion in an underground formation by injecting into the formation an ignition mixture containing an olefinic hydrocarbon or an unsaturated fatty acid,...
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4042027 |
Recovery of petroleum from viscous asphaltic petroleum containing formations including tar sand deposits
Petroleum materials may be effectively recovered from subterranean, viscous, asphaltic or bituminous formations such as tar sand deposits by first injecting into the tar sand formation a paraffinic...
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4027917 |
Method for igniting the top surface of oil shale in an in situ retort
An in situ oil shale retort is ignited by directing a combustible inlet gas mixture into an ignition zone extending across the top of the in situ retort and igniting the combustible mixture to...
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4014721 |
Ignition mixture for initiating underground in-situ combustion
A method for the initiation of an in-situ combustion in an underground formation by injecting into the formation an ignition mixture containing an olefinic hydrocarbon or an unsaturated fatty acid,...
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4007963 |
Oil collection and recovery system for in situ oil shale retort
An in situ oil shale retort is provided with a sealed space at the bottom in which liquids produced in the in situ retort and retort off gases are separated. The separated liquids and retort off...
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3999607 |
Recovery of hydrocarbons from coal
Coal liquids and gases are recovered from a thick underground coal seam by drilling one or more boreholes from the earth's surface into the lower part of the seam, burning out the coal over a...
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3986556 |
Hydrocarbon recovery from earth strata
A catalytic process for stimulating the recovery of hydrocarbons from porous and permeable hydrocarbon bearing strata in earth formations utlizing at least one injection well and at least one...
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3981362 |
In-situ combustion method for the recovery of hydrocarbons
Hydrocarbons are recovered from a subterranean hydrocarbon-bearing reservoir by in-situ combustion with minimum formation of water of combustion by fracturing the reservoir with a combustible...
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