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| Number | Title | Issue Date |
| 7963329 | Recovery and recycling of chemicals in chemical flooding process A method including a) injecting into the formation an aqueous solution containing a polymer and a surfactant to create a organic phase and a aqueous phase, the surfactant being capable of reducing the interfacial tension between the phases to less than 1 dyne/cm; b)... | 06/21/2011 |
| 7938182 | Method for recovery of natural gas from a group of subterranean zones A method for recovering natural gas from a group of subterranean zones containing natural gas, including injecting an amount of a displacing gas into a first subterranean zone, producing a first produced gas from the first subterranean zone, collecting an amount of ... | 05/10/2011 |
| 7931082 | Method and system for centralized well treatment A method of servicing multiple well locations from a central location that includes the steps of configuring a central location for distribution of well development task fluids to centralized service factories through fluid lines; preparing the treatment fluids at t... | 04/26/2011 |
| 7717175 | Methods of improving heavy oil production The invention provides an improved method for extracting heavy oil or bitumen contained in a reservoir. The invention involves directing the formation of a solvent fluid chamber through the combination of directed solvent fluid injection and production at combinatio... | 05/18/2010 |
| 7640980 | Thermal processes for subsurface formations A process may include providing heat from one or more heaters to at least a portion of a subsurface formation. Heat may transfer from one or more heaters to a part of a formation. In some embodiments, heat from the one or more heat sources may pyrolyze at least some... | 01/05/2010 |
| 7527096 | Methods of improving heavy oil production The invention provides an improved method for producing heavy oil or bitumen in a reservoir. The invention involves directing the formation of a solvent fluid chamber through the combination of directed solvent fluid injection and production at combinations of horiz... | 05/05/2009 |
| 7451814 | System and method for producing fluids from a subterranean formation The system of subterranean wells includes a subsurface flow line 20 having at least a portion within or underlining one or more subterranean formations 12. One or more drainage wells 26, 28, 30, 32, and 34 each extend from the surface and... | 11/18/2008 |
| 7426959 | Systems and methods for producing oil and/or gas A system including a mechanism for recovering oil and/or gas from an underground formation, the oil and/or gas comprising one or more sulfur compounds; a mechanism for converting at least a portion of the sulfur compounds from the recovered oil and/or gas into a car... | 09/23/2008 |
| 7360595 | Method and system for underground treatment of materials A method for underground treatment of subsurface materials comprises providing an injection pattern and a recovery pattern, the injection pattern and the recovery pattern located proximate to a subsurface treatment zone and at least one of the injection pattern and ... | 04/22/2008 |
| 7357182 | Method and apparatus for completing lateral channels from an existing oil or gas well A method and apparatus for completing a lateral channel from an existing oil or gas well includes a well perforating tool for perforating a well casing at a preselected depth, and a lateral alignment tool for directing a flexible hose and blaster nozzle through a pr... | 04/15/2008 |
| 7338924 | Oil-in-water-in-oil emulsion An oil-in-water-in-oil emulsion (O/W/O) comprising a first oil-in-water emulsion dispersed in a second oil, and a method of preparing the same. The O/W/O emulsion can be used as a drive fluid in an enhanced oil recovery process. The O/W/O emulsion of this invention ... | 03/04/2008 |
| 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 ratio. In this invention, two separate injection completions are used ... | 12/04/2007 |
| 7299879 | Thermodynamic pulse lift oil and gas recovery system An apparatus and process for lifting production fluids using the heat of compression of production gas to heat injection liquids. An apparatus and process for uninterrupted production using conserved heat of compression during well maintenance. A lift gas apparatus ... | 11/27/2007 |
| 7287586 | Compositions and methods for plugging and sealing a subterranean formation The invention provides for a composition for treating a subterranean formation, the composition comprising a water-swellable agent and a sealing agent. Preferably, the water-swellable agent: i) absorbs greater than 100 weight % of water; and ii) swells to greater th... | 10/30/2007 |
| 7279447 | Subterranean well and oil or gas stream treatment with bis(3-alkoxyalkan-2-ol) sulfides, sulfones, and sulfoxides: new surface active agents Compositions containing surfactant compounds according to formula (I) ROCH2CH(OH)CR1R2ZCR1R2CH(OH)CH2OR, (I) wherein Z is S, SO, or SO2, can have a range of equilib... | 10/09/2007 |
| 7272973 | Methods and systems for determining reservoir properties of subterranean formations Methods and systems are provided for evaluating subsurface earth oil and gas formations. More particularly, methods and systems are provided for determining reservoir properties such as reservoir transmissibilities and average reservoir pressures of a formation laye... | 09/25/2007 |
| 7262153 | Method and composition for enhanced hydrocarbons recovery A method of treating a hydrocarbon containing formation is described. The method may include providing a hydrocarbon recovery composition to the hydrocarbon containing formation. Hydrocarbons in the hydrocarbon containing formation may interact with the hydrocarbon ... | 08/28/2007 |
| 7255739 | Cement compositions with improved corrosion resistance and methods of cementing in subterranean formations This invention provides cement compositions that comprise a high alumina cement, vitrified shale, a soluble phosphate, and water sufficient to form a slurry. This invention also presents methods of enhancing the corrosion resistance of a cement composition that comp... | 08/14/2007 |
| 7249634 | Apparatus for production in oil wells An apparatus uses at least one injection pump (9) positioned in proximity to an undersea petroleum well (10) to provide hydraulic fluid for hydraulic pumping equipment positioned in the bottom of the well, in order to cause a flow of produced oil. The ... | 07/31/2007 |
| 7226895 | Drilling fluid systems for reducing circulation losses A circulation loss combination for water-based drilling fluid system(s) comprising: a first amount of alkali metal silicate; a second amount of water insoluble particulate; and, a quantity of water soluble activating agent effective to reduce the pH of the water-bas... | 06/05/2007 |
| 7216712 | Treatment of oil wells Hydrocarbon solids are removed from an oil well by feeding into the oil well a composition comprising at least 40 vol. % dense phase carbon dioxide and at least 30 vol. % of a C1–C3 alkanol component and optionally one or more surfactants, un... | 05/15/2007 |
| 7213644 | Cavity positioning tool and method In accordance with the teachings of the present invention, a method is provided for preventing formation of sludge in a subsurface cavity having particulate laden fluid disposed therein. The method includes positioning a downhole device having a fluid agitator into ... | 05/08/2007 |
| 7207395 | Method and system for testing a partially formed hydrocarbon well for evaluation and well planning refinement A method and system for testing a partially formed well includes forming a first well bore intersecting a subterranean formation. The first well bore includes a portion of a planned well having a first configuration. A production characteristic of the subterranean f... | 04/24/2007 |
| 7207390 | Method and system for lining multilateral wells In accordance with one embodiment of the present invention, a method for lining a lateral wellbore includes drilling a main wellbore extending from a surface to a subterranean zone, casing the main wellbore with a main casing having a plurality of lateral wellbore w... | 04/24/2007 |
| 7195068 | Filter cake degradation compositions and methods of use in subterranean operations The present invention relates to methods and compositions for degrading filter cakes in subterranean formations, and more specifically, to improved methods and compositions for degrading filter cakes that comprise acid-soluble portions and polymeric portions. In one... | 03/27/2007 |
| 7186673 | Stability enhanced water-in-oil emulsion and method for using same A method for enhancing the stability of a water-in-oil emulsion pretreating at least a portion of the oil prior to emulsification. The pretreatment step may consist of adding polymers to the oil, biotreating the oil, photochemically treating the oil, or combinations... | 03/06/2007 |
| 7168488 | Method and plant or increasing oil recovery by gas injection A method and a plant for simultaneous production of a gas for injection into an oil field and production of methanol, dimethyl ether and/or other oxygenated hydrocarbons or production of higher hydrocarbons from natural gas is disclosed. An air separation unit (ATR)... | 01/30/2007 |
| 7165621 | Method for exploitation of gas hydrates A method and apparatus for producing gas from a hydrate formation includes the use of at least one wellbore which penetrates the hydrate formation and further extends into an aquifer below the hydrate formation. The aquifer provides relatively warm water which may b... | 01/23/2007 |
| 7163063 | Method and system for extraction of resources from a subterranean well bore A method for stimulating production of resources from a coal seam includes forming a drainage well bore in the coal bed that has a first end coupled to a ground surface and a second end in the coal seam. The method further includes inserting a liner into the well bo... | 01/16/2007 |
| 7152681 | Method and arrangement for treatment of fluid A method utilizes the energy of water that flows out from a high-pressure reservoir. Water and hydrocarbons are separated in a down-hole separator and are brought separately to the seabed. In a first aspect the energy of the water is utilized to inject the water int... | 12/26/2006 |
| 7147055 | Cement compositions with improved corrosion resistance and methods of cementing in subterranean formations The present invention relates to subterranean well cementing operations, and more particularly, to cement compositions having improved corrosion resistance and methods of using such compositions in subterranean formations. The cement compositions generally include a... | 12/12/2006 |
| 7137447 | Method and composition for enhanced hydrocarbons recovery A method of treating a hydrocarbon containing formation is described. The method may include providing a hydrocarbon recovery composition to the hydrocarbon containing formation. Hydrocarbons in the hydrocarbon containing formation may interact with the hydrocarbon ... | 11/21/2006 |
| 7128156 | Wellbore rig with heat transfer loop apparatus A rig, the rig useful in well operations, the rig having rig structure above the earth, and heat transfer loop apparatus connected to the rig for supplying heat transfer fluid for use on the rig, either from a loop or loops with portion(s) in water or portion(s) in ... | 10/31/2006 |
| 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 of the formation to dispose of the waste gas. The waste gas is injec... | 10/31/2006 |
| 7121339 | Solids-stabilized oil-in-water emulsion and a method for preparing same A solids-stabilized oil-in-water emulsion and a method for preparing the solids-stabilized oil-in-water emulsion. The oil-in-water emulsion is formed by combining oil, water, solid particles and a pH enhancing agent and mixing until the solid-stabilized oil-in-water... | 10/17/2006 |
| 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 mixture into a stream enriched in oxygen and an oxygen d... | 09/05/2006 |
| 7100687 | Multi-purpose well bores and method for accessing a subterranean zone from the surface A well system includes at least two well bores extending from a surface to a subterranean zone. Each of the two well bores is used to form a well bore pattern for the subterranean zone that intersects the other well bore and transports fluid from the subterranean zo... | 09/05/2006 |
| 7077198 | In situ recovery from a hydrocarbon containing formation using barriers A method is described for inhibiting migration of fluids into and/or out of a treatment area undergoing an in situ conversion process. Barriers in the formation proximate a treatment area may be used to inhibit migration of fluids. Inhibition of migration of fluids ... | 07/18/2006 |
| 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 natural gas stream (12) and feeding at least... | 07/18/2006 |
| 7073595 | Method and system for controlling pressure in a dual well system A method for controlling pressure of a dual well system includes drilling a substantially vertical well bore from a surface to a subterranean zone and drilling an articulated well bore from the surface to the subterranean zone using a drill string. The articulated w... | 07/11/2006 |
