Patents Examined by George Suchfield
  • Patent number: 7987907
    Abstract: Method for increasing the recovery of crude oil from a reservoir containing at least one porous and permeable subterranean formation wherein the formation includes sandstone rock and at least one mineral that has a negative zeta potential under the reservoir conditions and wherein crude oil and connate water are present within the pores of the formation. The method is carried out by (A) injecting into the formation a slug of an aqueous displacement fluid that displaces crude oil from the surface of the pores of the formation wherein the pore volume (PV) of the slug of the aqueous displacement fluid is at least 0.
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: August 2, 2011
    Assignees: BP Exploration Operating Company Limited, BP Corporation North America Inc.
    Inventors: Ian Ralph Collins, Gary Russell Jerauld
  • Patent number: 7984759
    Abstract: A modified process for recovering oil from an underground reservoir using the toe-to-heel in situ combustion process. A diluent, namely a hydrocarbon condensate, is injected within a horizontal wellbore portion, preferably proximate the toe, of a vertical-horizontal well pair, or alternatively into an adjacent injection well, or both, to increase mobility of oil.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: July 26, 2011
    Assignee: Archon Technologies Ltd.
    Inventor: Conrad Ayasse
  • Patent number: 7980304
    Abstract: A system and method for extracting hydrocarbon products from oil shale using nuclear energy sources for energy to fracture the oil shale formations and provide sufficient heat and pressure to produce liquid and gaseous hydrocarbon products. Embodiments of the present invention also disclose steps for extracting the hydrocarbon products from the oil shale formations.
    Type: Grant
    Filed: October 13, 2008
    Date of Patent: July 19, 2011
    Assignee: Shale and Sands Oil Recovery LLC
    Inventor: Thomas B. O'Brien
  • Patent number: 7980329
    Abstract: A method and system for drilling a wellbore is described. The system includes a wellbore with a variable density drilling mud, drilling pipe, a bottom hole assembly disposed in the wellbore and a drilling mud processing unit in fluid communication with the wellbore. The variable density drilling mud has compressible particles and drilling fluid. The bottom hole assembly is coupled to the drilling pipe, while the drilling mud processing unit is configured to separate the compressible particles from the variable density drilling mud. The compressible particles in this embodiment may include compressible hollow objects filled with pressurized gas and configured to maintain the mud weight between the fracture pressure gradient and the pore pressure gradient. In addition, the system and method may also manage the use of compressible particles having different characteristics, such as size, during the drilling operations.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: July 19, 2011
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Paul Matthew Spiecker, Pavlin B. Entchev, Ramesh Gupta, Richard Polizzotti, Barbara Carstensen, Dennis G. Peiffer, Norman Pokutylowicz
  • Patent number: 7975763
    Abstract: A process for utilizing microwaves to heat H2O within a subterranean region wherein the heated H2O contacts heavy oil in the subterranean region to lower the viscosity of the heavy oil and improve production of the heavy oil.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: July 12, 2011
    Assignee: ConocoPhillips Company
    Inventors: Dwijen K. Banerjee, John L. Stalder
  • Patent number: 7963328
    Abstract: A process and system for release and recovery of methane from subterranean methane hydrate deposits in which heated CO2 is used to displace methane from the methane hydrate deposits and a portion of the displaced methane is routed to a combustion device proximate the deposit for combustion in-situ, generating heated CO2 which is introduced into the deposit, displacing additional methane, a portion of which is routed to the combustion device, thereby providing a substantially self-sustaining process. Portions of the displace methane not routed to the combustion device are captured for use elsewhere.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: June 21, 2011
    Assignee: Gas Technology Institute
    Inventors: Mark J. Khinkis, Hamid A. Abbasi, Kent Perry
  • Patent number: 7963331
    Abstract: An embodiment of a well bore servicing apparatus includes a housing having a through bore and at least one high pressure fluid aperture in the housing, the fluid aperture being in fluid communication with the through bore to provide a high pressure fluid stream to the well bore, and a removable member coupled to the housing and disposed adjacent the fluid jet forming aperture and isolating the fluid jet forming aperture from an exterior of the housing.
    Type: Grant
    Filed: January 21, 2010
    Date of Patent: June 21, 2011
    Assignee: Halliburton Energy Services Inc.
    Inventors: Jim B. Surjaatmadja, Matthew Howell
  • Patent number: 7963333
    Abstract: A process is described for replacing at least a portion of the liquid within the annular volume of a casing system within a wellbore with a second liquid. The second liquid is preselected to provide a measure of control of the pressure within the annular volume as the fluid within the volume is being heated.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: June 21, 2011
    Assignees: Chevron U.S.A. Inc., Los Alamos National Security LLC
    Inventors: Robert E. Hermes, Manuel E. Gonzalez, Brian C. Llewellyn, James B. Bloys, Don M. Coates
  • Patent number: 7958939
    Abstract: Embodiments of the invention relate to a process for providing a pumpable hydrate slurry in a hydrocarbon pipeline fluid mixture having a water-cut greater than about 50 volume percent. In one or more embodiments the process comprises treating the fluid mixture with an anti-agglomerant and adding water to the fluid mixture in an amount sufficient to lower the gas-water ratio sufficiently to achieve a pumpable hydrate slurry. Also disclosed are methods for producing hydrocarbons utilizing a process for providing a pumpable hydrate slurry in a hydrocarbon pipeline fluid mixture having a water -cut greater than about 50 volume percent.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: June 14, 2011
    Assignee: ExxonMobil Upstream Research Co.
    Inventor: Larry D. Talley
  • Patent number: 7954548
    Abstract: The present invention relates to a proppant for the hydraulic fracturing of oil or gas wells, which consists of a mixture of from 10 to 95% by weight of a spherical proppant and from 5 to 90% by weight of an angular material, the percentages being based on the total weight of the mixture. The proppant obtained according to the present invention is useful for eliminating or decreasing the “flow-back” phenomenon in operations in oil or gas wells.
    Type: Grant
    Filed: June 9, 2003
    Date of Patent: June 7, 2011
    Assignee: Mineracao Curimbaba Ltda.
    Inventors: Sebastião Curimbaba, Gabriel Warwick Kerr De Paiva Cortes, Guilherme De Paiva Cortes
  • Patent number: 7950459
    Abstract: Methods and apparatus for forming a fluid for use within in a subterranean formation including combining a partitioning agent and viscosifying polymer into a fluid, introducing the fluid into the subterranean formation, and recovering at least a portion of the fluid at a uppermost surface of the subterranean formation. Methods and apparatus of forming a fluid for use within in a subterranean formation including combining a partitioning agent and viscosifying polymer into a fluid, introducing the fluid into the subterranean formation at a temperature of about 45° C. or higher, and recovering at least a portion of the fluid at a uppermost surface of the subterranean formation at a temperature of about 45° C. or lower.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: May 31, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Philip F. Sullivan, Gary John Tustin, Yiyan Chen, Lijun Lin
  • Patent number: 7950456
    Abstract: Casing deformation and control for inclusion propagation in earth formations. A method of forming at least one inclusion in a subterranean formation includes the steps of: installing a liner within a casing section in a wellbore intersecting the formation; and expanding the liner and the casing section, thereby applying an increased compressive stress to the formation. Another method of forming the inclusion includes the steps of: installing an expansion control device on a casing section, the device including at least one latch member; expanding the casing section radially outward in a wellbore, the expanding step including widening at least one opening in a sidewall of the casing section, and displacing the latch member in one direction; and preventing a narrowing of the opening after the expanding step, the latch member resisting displacement thereof in an opposite direction.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: May 31, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Travis W. Cavender, Roger L. Schultz, Grant Hocking, Robert Pipkin
  • Patent number: 7950460
    Abstract: A process is described for replacing at least a portion of the liquid within the annular volume of a casing system within a wellbore with a second liquid. The second liquid is preselected to provide a measure of control of the pressure within the annular volume as the fluid within the volume is being heated.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: May 31, 2011
    Assignees: Chevron U.S.A. Inc., Los Alamos National Security, LLC
    Inventors: Robert E. Hermes, Manuel E. Gonzalez, Brian C. Llewellyn, James B. Bloys, Don M. Coates
  • Patent number: 7946342
    Abstract: A method for oil recovery whereby an exothermic water reactant (EWR) encapsulated in a water soluble coating is placed in water and pumped into one or more oil wells in contact with an oil bearing formation. After the water carries the EWR to the bottom of the injection well, the water soluble coating dissolves and the EWR reacts with the water to produce heat, an alkali solution, and hydrogen. The heat from the EWR reaction generates steam, which is forced into the oil bearing formation where it condenses and transfers heat to the oil, elevating its temperature and decreasing the viscosity of the oil. The aqueous alkali solution mixes with the oil in the oil bearing formation and forms a surfactant that reduces the interfacial tension between the oil and water. The hydrogen may be used to react with the oil at these elevated temperatures to form lighter molecules, thus upgrading to a certain extent the oil in situ.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: May 24, 2011
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Eric P. Robertson
  • Patent number: 7942201
    Abstract: Apparatus and methods of reducing the viscosity of a gelled fluid is provided. In one embodiment, a viscosity reducing microbe is disposed in a capsule and added to the gelled fluid. The gelled fluid may include a thickening agent adapted to increase its viscosity. Upon release from the capsule, the microbe begins to digest the thickening agent in the gelled fluid and/or releases enzymes that that breakdown the thickening agent.
    Type: Grant
    Filed: May 6, 2008
    Date of Patent: May 17, 2011
    Assignee: Clearwater International, LLC
    Inventors: Barry Ekstrand, Frank Zamora, Sarkis R. Kakadjian
  • Patent number: 7942215
    Abstract: Compositions including relatively low reactivity acids, mixed with viscoelastic surfactants (VESs) and internal breakers may serve as drilling fluids to open underground hydrocarbon reservoirs with carbonate contents of 10 wt % or above. The drilling fluids have low viscosities in the drilling pipe. After the fluid flows out of the drill bit, the acids react with carbonates in the formation thereby increasing the pH of the drilling fluids causing the VES to gel the fluid at the bottom of the hole and the downhole annulus between the drilling pipe and the formation rock. The viscosified drilling fluid will reduce fluid loss and will carry no dissolved drilling debris to the surface. After drilling through the targeted formation, the internal breakers in the viscosified drilling fluids will break down the fluids to permit their removal, and the well is ready to produce with very little or no near well bore damage.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: May 17, 2011
    Assignee: Baker Hughes Incorporated
    Inventors: Tianping Huang, James B. Crews, John R. Willingham
  • Patent number: 7942203
    Abstract: 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 hydrocarbons in a part of a subsurface formation. Hydrocarbons and/or other products may be produced from a subsurface formation. Certain embodiments describe apparatus, methods, and/or processes used in treating a subsurface or hydrocarbon containing formation.
    Type: Grant
    Filed: January 4, 2010
    Date of Patent: May 17, 2011
    Assignee: Shell Oil Company
    Inventors: Harold J. Vinegar, Mark Gregory Picha, Lanny Gene Schoeling
  • Patent number: 7938183
    Abstract: Amines or ammonia and amines may be used to enhance recovery of heavy hydrocarbons. The amines or ammonia and amines alone or with water, steam or an oil solvent are combined with the heavy hydrocarbons to promote the transport of the heavy hydrocarbons. The amines or ammonia and amines may be injected downhole or admixed with heavy hydrocarbon containing ore on the surface, optionally with water or steam. Ammonia may be used alone with high quality steam.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: May 10, 2011
    Assignee: Baker Hughes Incorporated
    Inventors: Paul Robert Hart, Brian J. Stefan, Piyush Srivastava, Justin D. Debord
  • Patent number: 7938182
    Abstract: 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 the first produced gas wherein the quality of the collected first produced gas is higher than or equal to a threshold production quality for the first produced gas, injecting an amount of the first produced gas into a second subterranean zone wherein the quality of the injected first produced gas is higher than or equal to a threshold injection quality for the first produced gas, producing a second produced gas from the second subterranean zone, and collecting an amount of the second produced gas wherein the quality of the collected second produced gas is higher than or equal to a threshold production quality for the second produced gas.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: May 10, 2011
    Assignee: Alberta Research Council Inc.
    Inventors: Alex Turta, Steve Sim, Ashok Singhal, Gary Bunio, Blaine F. Hawkins
  • Patent number: 7934554
    Abstract: Methods and compositions are provided that relate to well bore treatments that comprise swellable particles. An embodiment includes a method that comprises introducing a fluid comprising a dual oil/water-swellable particle into a subterranean formation. Another embodiment includes a method of cementing that comprises: introducing a cement composition comprising cement, water, and a dual oil/water-swellable particle into a space between a pipe string and a subterranean formation; and allowing the cement composition to set in the space. Another embodiment includes a well treatment composition comprising a dual oil/water-swellable particle.
    Type: Grant
    Filed: February 3, 2009
    Date of Patent: May 3, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Craig W. Roddy