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| Number | Title | Issue Date |
| 7789164 | Kerogen extraction from subterranean oil shale resources The present invention is directed to methods for extracting a kerogen-based product from subsurface (oil) shale formations, wherein such methods rely on fracturing and/or rubblizing portions of said formations so as to enhance their fluid permeability, and wherein s... | 09/07/2010 |
| 7730958 | Method and apparatus to enhance hydrocarbon production from wells This invention teaches methods and compositions to enhance oil and gas recovery from reservoirs. The methods and compositions disclosed enhance hydrocarbon recovery and fluid disposal in subterranean reservoirs by injecting microemulsion fluids with supercritical fl... | 06/08/2010 |
| 7324929 | Method and system for simulating a hydrocarbon-bearing formation The invention is a method for simulating one or more characteristics of a multi-component, hydrocarbon-bearing formation into which a displacement fluid having at least one component is injected to displace formation hydrocarbons. The first step of the method is to ... | 01/29/2008 |
| 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 |
| 7284604 | Methods for measurement of a dimensional characteristic and methods of predictive modeling related thereto A method of optically determining a change in magnitude of at least one dimensional characteristic of a sample in response to a selected chamber environment. A magnitude of at least one dimension of the at least one sample may be optically determined subsequent to a... | 10/23/2007 |
| 7281590 | Environmentally friendly method for generating energy from natural gas The invention relates to an environmentally friendly method for generating energy from natural gas. Through the combustion of the natural gas with a mixture comprising substantially oxygen and CO2, a number of advantages are achieved with regard to the em... | 10/16/2007 |
| 7279017 | Method for converting heavy oil residuum to a useful fuel A method for enabling the use of heavy oil residuum by conversion to a useful product. The method, in one embodiment, involves the use of a heavy oil residuum which is substantially non flowable. The viscosity of the residuum is reduced by heat or a combination of h... | 10/09/2007 |
| 7261159 | Perforating method A method for perforating a wellbore comprises placing a perforating device in a cased wellbore that passes through a subterranean formation. The perforating device comprises at least one explosive perforating charge that can be detonated in order to perforate the ca... | 08/28/2007 |
| 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 |
| 7172030 | Applications of waste gas injection into natural gas reservoirs Natural gas is produced from a reservoir above a bitumen reserve with minimal or no impact on concurrent or subsequent production of bitumen recovery techniques including SAGD. Greenhouse benefits over and above the benefits of coincidental recovery are available th... | 02/06/2007 |
| 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 |
| 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 |
| 7051809 | Burn assisted fracturing of underground coal bed A method for fracturing subterranean coal formations by injecting air into the formation, igniting the coal, driving the fire away from the wellbore by injecting a cooling media into the burning formation adjacent the wellbore, and subsequently extinguishing the fir... | 05/30/2006 |
| 7036362 | Downhole determination of formation fluid properties A method is disclosed for determining viscosity and density of fluid from formations surrounding an earth borehole, including the following steps: (a) suspending a formation testing device in the borehole; (b) drawing formation fluid into the device; (c) causing the... | 05/02/2006 |
| 7006959 | Method and system for simulating a hydrocarbon-bearing formation The invention is a method for simulating one or more characteristics of a multi-component, hydrocarbon-bearing formation into which a displacement fluid having at least one component is injected to displace formation hydrocarbons. The first step of the method is to ... | 02/28/2006 |
| 6915854 | Foaming agents for use in coal seam reservoirs A well treatment fluid composition that comprises a carrier fluid and an amphoteric surfactant, and optionally a viscosifying agent and proppant, is well suited for use in fracturing coal beds to stimulate methane production. The composition preferably is a foam tha... | 07/12/2005 |
| 6871707 | In situ thermal processing of a hydrocarbon containing formation with carbon dioxide sequestration A hydrocarbon containing formation may be treated using an in situ thermal process. Hydrocarbons, H2, and/or other formation fluids may be produced from the formation. Heat may be applied to the formation to raise a temperature of a portion of the formati... | 03/29/2005 |
| 6860147 | Process for predicting porosity and permeability of a coal bed A method for predicting the secondary porosity system (SPS) porosity, and thereby permeability, of a coal bed involves determining an initial condition in the coal bed, including an initial SPS pressure and an initial sorbed gas composition, determining a pressure s... | 03/01/2005 |
| 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, H2, and/or other formation fluids may be produced from the formation. Heat may be applied to the formation to raise a temperature of a portion of the formation to a pyrolysis ... | 07/20/2004 |
| 6736215 | In situ thermal processing of a hydrocarbon containing formation, in situ production of synthesis gas, and carbon dioxide sequestration A hydrocarbon containing formation may be treated using an in situ thermal process. Hydrocarbons, H2, and/or other formation fluids may be produced from the formation. Heat may be applied to the formation to raise a temperature of a portion of the formati... | 05/18/2004 |
| 6733573 | Catalyst allowing conversion of natural gas hydrate and liquid CO2 to CO2 hydrate and natural gas A method for recovering large volumes of hydrocarbon fuels, particularly methane (CH4), using commercially available reagents which are strongly water-soluble and soluble in liquid CO2 in the presence of liquid CO2 injected into the ... | 05/11/2004 |
| 6679326 | Pro-ecological mining system The invention comprises a high pressure fluid barrier forming an enclosure boundary with respect to overburden and floor strata separated by one or more production strata containing desirable fluidizable deposits and/or potential reaction materials. A cen... | 01/20/2004 |
| 6609895 | Carbon dioxide pump, pumping system, and method of controlling the same There is disclosed a pump and pumping system for pumping dense phase gases, specifically for injecting carbon dioxide into an oil or gas reservoir that includes a pump, a motor, and a casing in which the pump and motor reside. There is also disclosed a pu... | 08/26/2003 |
| 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 periodically injecting simultaneously or alternately a non... | 08/27/2002 |
| 6302204 | Method of obtaining improved geophysical information about earth formations The present invention provides a method for forming wellbores. In one method, one or more wellbores are drilled along preplanned paths based in part upon seismic surveys performed from the surface. An acoustic transmitter conveyed in such wellbores transm... | 10/16/2001 |
| 6158517 | Artificial aquifers in hydrologic cells for primary and enhanced oil recoveries, for exploitation of heavy oil, tar sands and gas hydrates Artificial aquifers for hydrologic cells are used to recover hydrocarbons from carbonaceous formations. Artificial aquifers of a hydrologic cell for primary or enhanced oil recovery are constructed through the use of a conventional hydrofrac technique to ... | 12/12/2000 |
| 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 production wells, of petroleum fluids displaced by the wetti... | 08/22/2000 |
| 6016873 | Hydrologic cells for the exploitation of hydrocarbons from carbonaceous formations Fluid and/or heat are induced to flow from one natural or artificial undeound aquifer, which extends vertically, at an incline or horizontally, across a host-rock formation to a well. Alternatively, fluid and/or heat are induced to flow from a well acros... | 01/25/2000 |
| 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 non-aqueous recovery agents ("Injectant"). The procedure is based on... | 02/16/1999 |
| 5778977 | Gravity concentrated carbon dioxide for process This invention relates to the recovery of oil from an oil-bearing formation having a natural fracture network with substantial vertical communication and wherein gravity drainage is the primary means of recovery. A downwardly inflating gas-cap is pressure... | 07/14/1998 |
| 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, Sorm. Such a method would displace a hydrocarbon fluid in a subterranean formation using a substantially non-aqueous... | 01/27/1998 |
| 5634520 | Enhanced oil recovery process including the simultaneous injection of a miscible gas and water An enhanced oil recovery process comprises of the at least periodic introduction of (i) a non-condensible gas preferably selected from among carbon dioxide, nitrogen, methane or mixtures thereof, and (ii) an aqueous drive solution, preferably brine, into ... | 06/03/1997 |
| 5632336 | Method for improving injectivity of fluids in oil reservoirs A method is provided for increasing the rate of injection of flooding fluids into injection wells. A slug of polar solvent or a mixture of polar solvent and non-aqueous flooding fluid is injected into the injection well to displace aqueous and hydrocarbon... | 05/27/1997 |
| 5566756 | Method for recovering methane from a solid carbonaceous subterranean formation A method for treating a mixture of gaseous fluids within a solid carbonaceous subterranean formation. In some embodiments, the invention provides for the disposal of a strongly adsorbing gaseous fluid within the formation. In other embodiments, the invent... | 10/22/1996 |
| 5542474 | Foam mixture for 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 least one production well. In a steam flood oil recovery pro... | 08/06/1996 |
| 5531272 | Low temperature underwater epoxy system for zone isolation, remedial cementing, and casing repair A method for zone isolation or replacing a damaged or corroded casing with a solid plastic is described herein. A resin/curing agent mixture sufficient to form a hardened plastic or solid, underwater and/or at low wellbore temperatures that is also able t... | 07/02/1996 |
| 5515919 | Enhanced oil recovery process including the simultaneous injection of a miscible gas and water An enhanced oil recovery process comprises of the at least periodic introduction of (i) a non-condensible gas preferably selected from among carbon dioxide, nitrogen, methane or mixtures thereof, and (ii) an aqueous drive solution, preferably brine, into ... | 05/14/1996 |
| 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 least one production well. In a steam flood oil recovery pro... | 05/07/1996 |
| 5410997 | High performance automotive engine gasket and method of sealing a high performance engine A method of sealing a high performance internal combustion engine with a head gasket having a fire ring comprising providing a groove in the head or block generally concentric with each said combustion opening, each groove having a land area and a general... | 05/02/1995 |
| 5402847 | Coal bed methane recovery A process for producing methane from a subterranean coal bed by continuously injecting a carbon dioxide-containing gas into the coal bed and recovering displaced and desorbed methane from a recovery well. The injection gas may be exhaust gas from a hydroc... | 04/04/1995 |
