Patents Assigned to Statoil ASA
  • Patent number: 10190400
    Abstract: A process for the recovery of hydrocarbons from a hydrocarbon bearing formation and in which are situated an upper injection well and a lower production well is presented. The region between the wells is preheated by circulating hot solvent through at least part of both of the wells until hydraulic communication between both wells is achieved. Solvent is injected into the upper injection well at or above its critical temperature and the solvent is pentane or a mixture of butane and pentane. A hot solvent chamber is created consisting of solvent vapor and liquid. Bitumen and solvent are mixed at the boundary of the solvent chamber so formed. The hydrocarbon and solvent are caused to be mixed to drain downwards by gravity and sideways by pressure gradient towards the lower production well. The mixture is produced to the surface through the lower production well.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: January 29, 2019
    Assignee: STATOIL ASA
    Inventors: Jostein Alvestad, Aurelie Lagisquet, Eimund Gilje
  • Patent number: 10107096
    Abstract: Formation testing which may involve circulating mud in a pipe string from a mud pit through a port in the pipe string to a downhole diverter sub, wherein the pipe string is suspended in a wellbore extending into a subterranean formation, operating a downhole pump to pump formation fluid from the formation, wherein the formation fluid comprises gas, and mixing the pumped formation fluid with circulated mud such that a proportion of the pumped formation gas in the circulated mud is maintained below a threshold value.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: October 23, 2018
    Assignees: SCHLUMBERGER TECHNOLOGY CORPORATION, STATOIL ASA
    Inventors: Sylvain Bedouet, Kare Otto Eriksen
  • Patent number: 10094208
    Abstract: A process for the recovery of hydrocarbon such as bitumen/EHO from a hydrocarbon bearing formation in which are situated an upper injection well and a lower production well, the method comprising the steps: preheating an area around and between the wells by circulating hot solvent through the completed interval of each of the wells until sufficient hydraulic communication between both wells is achieved; injecting one or more hydrocarbon solvents into the upper injection well at or above critical temperature of the solvent or solvent mixture, thereby causing a mixture of hydrocarbon and solvent to flow by gravity drainage to the lower production well; and producing the hydrocarbon to the surface through the lower production well. A non-condensable gas may be injected into the solvent chamber created by the hydrocarbon solvent.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: October 9, 2018
    Assignee: STATOIL ASA
    Inventors: Lars Høier, Jostein Alvestad, Aurelie Lagisquet, Eimund Gilje
  • Patent number: 9903169
    Abstract: A water injection system that includes a primary water injection line; an injection fluid supply tank; a high pressure injection pump in fluid communication with the injection fluid supply and primary water injection line for pumping injection fluid in injection fluid supply tank through the primary water injection line; a polymer gel supply tank; and a high pressure chemical injection pump in fluid communication with the polymer gel supply tank and the water injection line configured to pump polymer gel having a viscosity of at least about 50,000 cP (at 20° C. measured using a Bohlin Rheometer CSR 50, cone and plate measuring system CP 4°/40 mm, single shear rate 1/s) in the polymer gel supply tank into the water injection line for mixture with injection fluid is disclosed.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: February 27, 2018
    Assignees: SCHLUMBERGER NORGE AS, Statoil ASA
    Inventors: Torbjørn Tenold Eikaas, Jan Erik Solbakken, Egil Sunde
  • Publication number: 20170002822
    Abstract: A method and apparatus controls a compressor, where the compressor inlet gas may contain water and/or non-aqueous liquid. The method includes the steps of measuring temperature at the compressor inlet and/or outlet side, measuring pressure at the compressor inlet and outlet side in order to determine a compressor pressure ratio, measuring fluid mixture density at the compressor inlet and/or outlet side, measuring individual volume fractions of gas, water and non-aqueous liquid at the compressor inlet and/or outlet side, measuring fluid velocity at the compressor inlet and/or outlet side, and determining individual flow rates of gas, water and non-aqueous liquid on the basis of the measured individual volume fractions of gas, water and non aqueous liquid and the fluid velocity at the compressor inlet and/or outlet side.
    Type: Application
    Filed: July 15, 2016
    Publication date: January 5, 2017
    Applicant: STATOIL ASA
    Inventors: Lars BRENNE, Jan HØYDAL
  • Patent number: 9470077
    Abstract: The present invention provides a method of recovering a hydrocarbon mixture from a subterranean formation comprising: (i) injecting an oxygen-rich gas into said formation; (ii) combusting said oxygen-rich gas in said formation thereby heating and reducing the viscosity of said hydrocarbon mixture and generating CO2-rich gas; (iii) recovering said heated hydrocarbon; and (iv) capturing at least a portion of CO2 from said CO2-rich gas.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: October 18, 2016
    Assignee: STATOIL ASA
    Inventors: Harald Vindspoll, Knut Vebjørn Grande, Karina Heitnes Hofstad
  • Patent number: 9416790
    Abstract: A method and apparatus controls a compressor, where the compressor inlet gas may contain water and/or non-aqueous liquid. The method includes the steps of measuring temperature at the compressor inlet and/or outlet side, measuring pressure at the compressor inlet and outlet side in order to determine a compressor pressure ratio, measuring fluid mixture density at the compressor inlet and/or outlet side, measuring individual volume fractions of gas, water and non-aqueous liquid at the compressor inlet and/or outlet side, measuring fluid velocity at the compressor inlet and/or outlet side, and determining individual flow rates of gas, water and non-aqueous liquid on the basis of the measured individual volume fractions of gas, water and non aqueous liquid and the fluid velocity at the compressor inlet and/or outlet side.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: August 16, 2016
    Assignee: STATOIL ASA
    Inventors: Lars Brenne, Jan Høydal
  • Patent number: 9328595
    Abstract: A method for recovering hydrocarbons from a sub-surface reservoir having present therein a wellbore in which a production conduit and an injection conduit are located includes injecting a heating fluid into the reservoir via said injection conduit where the heating fluid is released via a plurality of discrete permeable sections located along the length of the injection conduit and produced hydrocarbons are collected via a plurality of discrete permeable sections located along the length of the production conduit.
    Type: Grant
    Filed: February 10, 2010
    Date of Patent: May 3, 2016
    Assignee: STATOIL ASA
    Inventor: Halvor Kjørholt
  • Patent number: 9194215
    Abstract: A method and arrangement are proposed for introducing a CO2 composition into a subterranean geological formation for storage of CO2 therein. The CO2 composition is initially injected into the formation using a first set of injection parameters at which the CO2 composition is a supercritical fluid having first viscosity and density values. The injection parameters are then modified such that the CO2 composition is injected into the formation using at least one second set of injection parameters at which the CO2 composition is a supercritical fluid having second viscosity and density values that are different from said first viscosity and density values, wherein said injection parameters include the injection temperature, injection pressure and hydrocarbon content of the CO2 composition.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: November 24, 2015
    Assignee: STATOIL ASA
    Inventors: Lars Høier, Bamshad Nazarian
  • Publication number: 20150322758
    Abstract: A process for the recovery of hydrocarbons from a hydrocarbon bearing formation and in which are situated an upper injection well and a lower production well is presented. The region between the wells is preheated by circulating hot solvent through at least part of both of the wells until hydraulic communication between both wells is achieved. Solvent is injected into the upper injection well at or above its critical temperature and the solvent is pentane or a mixture of butane and pentane. A hot solvent chamber is created consisting of solvent vapour and liquid. Bitumen and solvent are mixed at the boundary of the solvent chamber so formed. The hydrocarbon and solvent are caused to be mixed to drain downwards by gravity and sideways by pressure gradient towards the lower production well. The mixture is produced to the surface through the lower production well.
    Type: Application
    Filed: July 16, 2015
    Publication date: November 12, 2015
    Applicant: Statoil ASA
    Inventors: Jostein ALVESTAD, Aurelie LAGISQUET, Eimund GILJE
  • Patent number: 9115577
    Abstract: A process for the recovery of hydrocarbon such as bitumen/EHO from a hydrocarbon bearing formation in which are situated an upper injection well and a lower production well, the method comprising the steps: preheating an area around and between the wells by circulating hot solvent through the completed interval of each of the wells until sufficient hydraulic communication between both wells is achieved; injecting one of more hydrocarbon solvents into the upper injection well at or above critical temperature of the solvent or solvent mixture, thereby causing a mixture of hydrocarbon and solvent to flow by gravity drainage to the lower production well; and producing the hydrocarbon to the surface through the lower production well.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: August 25, 2015
    Assignee: STATOIL ASA
    Inventors: Jostein Alvestad, Aurelie Lagisquet, Eimund Gilje
  • Patent number: 8952076
    Abstract: A method of producing an alumina-supported catalyst for use in a Fischer-Tropsch synthesis reaction, which comprises: calcining an initial ?-alumina support material at a temperature of at least 550° C. to produce a modified alumina support material; impregnating the modified alumina support material with a source cobalt; calcining the impregnated support material at a temperature of 700° C. to 1200° C., and activating the catalyst.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: February 10, 2015
    Assignee: Statoil ASA
    Inventors: Erling Rytter, Torild Hulsund Skagseth, Hanne Wigum, Nonyameko Sincadu
  • Patent number: 8871689
    Abstract: A method of drilling is disclosed and includes pumping a wellbore fluid into a wellbore through an earth formation, wherein the wellbore fluid comprises a base fluid and a surface active agent capable of altering wettability of fines located in the earth formation, and allowing filtration of at least a portion of the wellbore fluid into the earth formation.
    Type: Grant
    Filed: November 27, 2008
    Date of Patent: October 28, 2014
    Assignees: Schlumberger Norge AS, Statoil ASA
    Inventors: Russell B. Watson, Patrick Viste, Niall Fleming, Kari Ramstad, Anne Mette Mathisen, Nils Kaageson-Loe
  • Patent number: 8863855
    Abstract: Methods of enhancing oil recovery from subterranean hydrocarbon reservoirs are described, wherein a microorganism capable of digesting oil is injected into the formation.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: October 21, 2014
    Assignee: Statoil ASA
    Inventor: Hans Kristian Kotlar
  • Publication number: 20140196895
    Abstract: The present invention provides a method of recovering a hydrocarbon mixture from a subterranean formation comprising: (i) injecting an oxygen-rich gas into said formation; (ii) combusting said oxygen-rich gas in said formation thereby heating and reducing the viscosity of said hydrocarbon mixture and generating CO2-rich gas; (iii) recovering said heated hydrocarbon; and (iv) capturing at least a portion of CO2 from said CO2-rich gas.
    Type: Application
    Filed: June 28, 2011
    Publication date: July 17, 2014
    Applicant: Statoil ASA
    Inventors: Pentti Paurola, Harald Vindspoll, Knut Vebjørn Grande, Karina Heitnes Hofstad
  • Patent number: 8770126
    Abstract: A method of moving a floating wind turbine relative to a body of water, the floating wind turbine having a buoyant body with a nacelle at the upper end thereof, including the steps of floating the floating wind turbine in the body of water, and towing the floating wind turbine while holding the buoyant body in an inclined position, whereby the nacelle is held clear of the water. As the wind turbine is held in an inclined position, it can be towed through regions of shallower water than if it were in a vertical position.
    Type: Grant
    Filed: August 3, 2009
    Date of Patent: July 8, 2014
    Assignee: Statoil ASA
    Inventor: Finn Gunnar Nielsen
  • Publication number: 20140116692
    Abstract: The present invention provides a method for the treatment of a subterranean formation which contains sand particles, said method comprising contacting said formation with a material capable of increasing the residual matrix strength of said particulate fine whereby to reduce or prevent their migration whilst minimizing any decrease in their permeability. Preferred materials include organosilanes and enzyme systems.
    Type: Application
    Filed: October 23, 2013
    Publication date: May 1, 2014
    Applicant: STATOIL ASA
    Inventors: Hans Kristian Kotlar, Frode Haavind
  • Patent number: 8657940
    Abstract: Assembly to separate a multiphase flow, comprising at least one compact separation unit chosen among an in-line deliquidiser and an in-line phase splitter, said compact separation unit is arranged to receive the multiphase flow for separation thereof to a gas flow and a mainly liquid containing flow, an outlet for gas, arranged to receive the gas flow from the compact separation unit and possible additional gas flows, one or more conduit separators, arranged to receive the mainly liquid containing flow from the compact separation unit and any additional liquid containing flows, having an outlet for liquid from the at least one conduit separator in a low-lying part thereof.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: February 25, 2014
    Assignee: Statoil ASA
    Inventors: Eivind Aarebrot, Jan Høydal
  • Patent number: 8596358
    Abstract: The present invention provides a method for the treatment of a subterranean formation which contains sand particles, said method comprising contacting said formation with a material capable of increasing the residual matrix strength of said particulate fine whereby to reduce or prevent their migration while minimizing any decrease in their permeability. Preferred materials include organosilanes and enzyme systems.
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: December 3, 2013
    Assignee: Statoil ASA
    Inventors: Hans Kristian Kotlar, Frode Haavind
  • Patent number: 8592198
    Abstract: The invention relates to a microorganism growth substrate which comprises a sterile nutrient composition derived from the biomass of a culture of bacteria including methanotrophic bacteria and further containing at least one sterile nutrient. A preferred biomass material is that derived from a microbial culture comprising Methylococcus capsulates (Bath) (strain NCIMB 41526), Ralstonia sp. DB3 (strain NCIMB 41527) and Brevibacillus agri DB5 (strain NCIMB 41525), optionally in combination with Aneurinibacillus sp. DB4 (strain NCIMB 41528).
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: November 26, 2013
    Assignee: Statoil ASA
    Inventors: Einar Moen, Jeanette Moller Jorgensen, Karen Moller Jensen, Arild Johannessen