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7604064 |
Multi-stage, multi-phase unitized linear liquid entrained-phase transfer apparatus
An apparatus capable of receiving oil and gas from a recovery or other input source, compressing and/or pumping said oil and gas using multi-phase compressors with heat exchange means, and...
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7559373 |
Process for fracturing a subterranean formation
A well may intersect a mineral bearing stratum. A fracturing fluid in the nature of a non-participating gas may be injected into the stratum at high rates of flow, to yield a high down hole...
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7464756 |
Process for in situ recovery of bitumen and heavy oil
A process is described for in situ recovery of bitumen or heavy oil from a reservoir having a horizontal injection well and a horizontal production well. The process includes a first phase in which...
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7461694 |
Methods for recovering oil from an oil reservoir
There is a method for enhancing the recovery of oil from a reservoir. The method has the step of a) introducing a flooding fluid into the reservoir and b) extracting the oil through a wellbore at a...
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7303006 |
Method for improved vertical sweep of oil reservoirs
In a WAG flood oil is displaced from a subterranean formation by injecting water alternately with gas into a single injection completion per pattern. The ratio of water to gas injected is the WAG...
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7128150 |
Acid gas disposal method
This invention is method of recovering gas from a gas-bearing subterranean formation in which gas is produced from an upper portion of the formation and a waste gas is injected into a lower portion...
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7100692 |
Tertiary oil recovery combined with gas conversion process
A process for the recovery of oil from a subsurface reservoir in combination with the production of liquid hydrocarbons from a hydrocarbonaceous stream involving:
(i) separating an oxygen/nitrogen...
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7090014 |
Process for sequentially applying SAGD to adjacent sections of a petroleum reservoir
Steam assisted gravity drainage (“SAGD”) is practised in a first section of a reservoir containing heavy oil. When steam/oil ratio rises sufficiently, steam injection into the first section is...
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7086482 |
Recovery of hydrocarbons in oil wells by injection of treated inert gases obtained from the industrial effluence
A process of recovering hydrocarbons in oil wells by the injection of treated inert gases from cement clinker production effluence(s) comprising the steps of treating the effluence(s) to make the...
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7077202 |
Process for the recovery of oil from a natural oil reservoir
A method for recovering oil ( 24 ) from a natural oil reservoir ( 18 ) includes the steps of separating air to produce an oxygen rich stream ( 40 ) and a nitrogen rich stream ( 34 ), providing a...
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6983804 |
Method and system for gas-lifting well effluents
A method and system for gas-lifting well effluents utilizes a porous wall in which an array of small lift-gas injection ports is present such that lift-gas is injected as an agglomerate of finely...
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6820689 |
Method and apparatus for generating pollution free electrical energy from hydrocarbons
The present invention relates to the generation of substantially pollution free energy by utilizing hydrocarbons to create electrical energy for interconnection to local transmission lines...
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6550542 |
Fluid profile control in enhanced oil recovery
Fluid profile in an oil field waterflood operation is controlled after water breakthrough occurs by injecting a hydrate forming hydrocarbon gas into the highly permeable breakthrough zone. The...
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6439308 |
Foam drive method
A foam drive method for enhancing oil recovery efficiently is initiated by injecting into a subterranean oil-bearing formation, an aqueous polymer solution as a preceding-slug. This is followed by...
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6364019 |
Method for sand control in oil, gas and water wells
A method for treating a subterranean sand formation adjacent to a bore hole forms a permeable solid barrier which restrains the movement of sand particles while maintaining the permeability of the...
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6298918 |
System for lifting petroleum by pneumatic pumping
The invention relates to a pneumatic system for lifting petroleum, for application in wells, which may be flowing or non-flowing wells, preferably with low productivity levels or with low static...
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6109358 |
Venting apparatus and method for remediation of a porous medium
This invention relates to generally an apparatus and method for accumulating and discharging a gas under pressure or vacuum to aid the remediation of a contaminated porous medium, such as soil or...
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6105672 |
Enhanced petroleum fluid recovery process in an underground reservoir
Enhanced (WAG type) oil recovery process in an underground reservoir uses forced injection, through one or more wells, alternately of fluid slugs and gas slugs, and recovery, through one or more...
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6079499 |
Heater well method and apparatus
A method and apparatus is disclosed for heating of formations using fired heaters. The method includes the steps of: providing a wellbore within the formation to be heated, the wellbore comprising...
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6039116 |
Oil and gas production with periodic gas injection
A method and apparatus for operating a well which has a wellbore which passes into both an oil and gas production zone and a gas injection zone. An oil and gas stream is produced from the...
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6035933 |
Process for the thermo-hydraulic control of gas hydrates
A process for the thermo-hydraulic control of gas hydrates in subsea production and injection wells as well as pipelines which transport liquid or gaseous hydrocarbons is described, the process...
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5937949 |
Process for the consolidation of sand
Process for the consolidation of sand in a well which produces fluids, particularly oil and/or gas, comprising the following steps: 1) optional preflush with an aqueous solution of inorganic...
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5927907 |
Method and apparatus for preventing liquefaction of ground caused by violent earthquake
In order to form an air-mixed zone containing tiny air bubbles in the ground with feeble cohesion or the cohesionless ground, an air-tight cover 1 covering the air-mixed zone is placed on the...
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5899274 |
Solvent-assisted method for mobilizing viscous heavy oil
The invention provides a solvent-assisted method for mobilizing viscous heavy oil or bitumen in a reservoir under reservoir conditions without the need to adjust the temperature or pressure. The...
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5871053 |
Method for improving oil recovery from a formation using hydrocarbon analysis of the fluid produced therefrom
The invention described here is a method for using produced fluid compositions to decide how to modify injection/production strategies in oil recovery processes that involve injection of...
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5758727 |
Enhanced petroleum fluid recovery method in an underground reservoir
The method according to the invention is aimed at increasing the efficiency of the conventional enhanced petroleum fluid (O) recovery method (WAG) in an underground reservoir, according to which...
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5711373 |
Method for recovering a hydrocarbon liquid from a subterranean formation
The invention disclosed herein is a method for producing oil from a reservoir after predetermining its residual oil saturation, S orm . Such a method would displace a hydrocarbon fluid in a...
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5513705 |
Foam mixture for steam and carbon dioxide drive oil recovery method
The invention is a foam method for improving conformance during a steam flood or carbon dioxide flood in a subterranean, oil-containing formation penetrated by at least one injection well and at...
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5503226 |
Process for recovering hydrocarbons by thermally assisted gravity segregation
A process for recovering hydrocarbons from a subterranean formation having low permeability matrix blocks separated by a well-connected fracture network. Hot light gas is injected into the...
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5388641 |
Method for reducing the inert gas fraction in methane-containing gaseous mixtures obtained from underground formations
A method for reducing the inert gas fraction volume percent present in a methane-containing mixture produced by injecting an inert gas into a solid carbonaceous subterranean formation is disclosed....
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5370182 |
Thermal extraction system and method
The Thermal Extraction System and Method utilizes a geothermal heat source to provide thermal energy at the surface by drilling a bore hole into the geothermal heat source and equipping the bore...
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5351757 |
Method for silica gel emplacement for enhanced oil recovery
A method for emplacing a silicate gel to improve the sweep efficiency of a water, gas, or steam flood operation by reducing the permeability of high-permeability thief zones is disclosed....
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5255740 |
Secondary recovery process
In accordance with illustrative embodiments of the present invention, a process for the secondary recovery of oil found in a dolomite formation includes generating in-situ decomposition of the...
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5232049 |
Sequentially flooding a subterranean hydrocarbon-bearing formation with a repeating cycle of immiscible displacement gases
A process is provided for recovering liquid hydrocarbons from a subterranean hydrocarbon-bearing formation by sequential injection of a pair of immiscible gases of differing composition which...
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5217076 |
Method and apparatus for improved recovery of oil from porous, subsurface deposits (targevcir oricess)
A method and apparatus for the improved recovery of oil from porous sub-surface deposits such as tar sands comprising mining and drilling a well with upper and lower horizontal rectangular grids...
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5193617 |
Micro-slug injection of surfactants in an enhanced oil recovery process
A method for introducing a surfactant into an oil bearing formation includes plurality of a micro-slug injections of surfactant. Each micro-slug injection comprises an "on time" in which the...
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5186256 |
Three directional drilling process for environmental remediation of contaminated subsurface formations
The present invention resides in a three directional horizontal drilling process which is suitable for the in-situ treatment or extraction of undesirable contaminants from subsurface formations. A...
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5172763 |
Steam-foam drive
The time delay experienced between the commencement of the steam-foam drive and the subsequent incremental increase in oil production rate is reduced by simultaneously (a) injecting steam into the...
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5145003 |
Method for in-situ heated annulus refining process
Recovery of viscous petroleum such as from tar sands is assisted using a controlled flow of hot fluid and hydrogen-generating gas in a flow path within the formation; thus a solid-wall hollow...
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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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5052487 |
Sequential injection foam process for enhanced oil recovery
This invention provides a method for enhanced oil recovery which comprises two steps. In the first step, an oil-mobilizing agent comprising (a) a gas and an alkyl aromatic sulfonate or (b) an...
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5052482 |
Catalytic downhole reactor and steam generator
A Downhole catalytic Methanator reactor assembly is hung within the cemented casing of a vertical well for the purpose of producing large volumes of high quality steam and oil soluble gases for...
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5031698 |
Steam foam surfactants enriched in alpha olefin disulfonates for enhanced oil recovery
An improved process for recovering oil by flowing a mixture of steam and steam foam surfactant into an oil-containing subterranean reservoir, the improvement provided by using surfactants enriched...
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5014785 |
Methane production from carbonaceous subterranean formations
A method of producing methane by injecting inert gas, such as nitrogen, through an injection well into a solid carbonaceous subterranean formation (e.g., coal) and recovering methane from a...
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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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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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4930574 |
Method for tertiary oil recovery from deep-well drill holes with utilization of the escaping petroleum gas
The process is of special interest to refinieries in the neighborhood of existing oilfields. The crude oil additionally released in the known manner by the introduction of hot water or steam...
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4883122 |
Method of coalbed methane production
A method of producing coalbed methane by injecting inert gas, such as nitrogen, through an injection well into the coal seam and recovering coalbed methane from a production well(s). Methane...
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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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4856587 |
Recovery of oil from oil-bearing formation by continually flowing pressurized heated gas through channel alongside matrix
The invention comprises a method and apparatus for recovering oil from so-called depleted oil fields and also from tar sands. A pressurized, heated, non-aqueous gas, such as carbon dioxide, is...
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