Patents Assigned to STATOIL PETROLEUM AS
  • Disconnectable production dock (DPD) for turret free disconnectable weather vaning FPSO
    Patent number: 9616975
    Abstract: System for mooring a large vessel for production of hydrocarbons, such vessel for example being a FPSO vessel, the mooring system comprising at least two floating bodies of the hang-off type, moored by means of differentiated compliance spread anchoring system to the sea bed, allowing partly weathervaning of the large vessel; a riser system extending from the sea bed to each the floating bodies, and means for transfer of fluids from the two floating bodies to the large vessel, the floating bodies and the large vessel being provided with locking means, locking floating bodies to the large vessel at the bow and the stern of the vessel in a mechanically rigid manner, thus providing a integrated, rigidly fixed unit comprising the large vessel and the floating bodies.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: April 11, 2017
    Assignee: STATOIL PETROLEUM AS
    Inventors: Trond Stokka Meling, Arnt Olufsen
  • Drill pipe protector assembly
    Patent number: 9617801
    Abstract: A drill pipe protector assembly comprising at least one protector sleeve (23) adapted to be mounted to the drill pipe string (7) through a fluid bearing (25) so as to be co-axially rotatable with respect to the drill pipe string (7). A retainer arrangement (21, 35) axially fixes the protector sleeve (23) with respect to the drill pipe string (7). The fluid bearing (25) is constructed according to the principles of a hydrostatic fluid bearing. At least one fluid channel (53) connects the fluid bearing (25) to a fluid path of pressurized drilling fluid flowing within an inner space (51) of the drill pipe string (7).
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: April 11, 2017
    Assignee: STATOIL PETROLEUM AS
    Inventor: Steinar Wasa Tverlid
  • Pressure joint
    Patent number: 9605495
    Abstract: A pressure joint is provided for use with a floating installation (1) that is connected to a stiff riser (3, 12). A low pressure slip joint (5) connects the installation (1) to the stiff riser (3, 12). A telescopic assembly (13, 14) fitted with a high pressure seal (15) is arranged to be fitted within the low pressure slip joint (5) when in a non-extended configuration, such that normal operation of the low pressure slip joint (5) is not impeded.
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: March 28, 2017
    Assignee: STATOIL PETROLEUM AS
    Inventors: Lorents Reinås, Tore Geir Wernø, Alastair Buchanan
  • SEISMIC SENSOR RECORDING SYSTEM
    Publication number: 20170075014
    Abstract: A sensor system for deployment on or close to the seabed in marine seismic surveys includes a central hub, and a plurality of arms coupled to the central hub. Each arm has a degree of freedom of movement with respect to the central hub. The system further includes at least one seismic sensor mounted to each of said arms.
    Type: Application
    Filed: May 7, 2014
    Publication date: March 16, 2017
    Applicant: STATOIL PETROLEUM AS
    Inventors: Harald WESTERDAHL, Peter HANSSEN, Per Magnus SPARREVIK, Stephen Walter HAYES, Klaus TRONSTAD
  • P/S WAVE MEASUREMENT AND COMPENSATION
    Publication number: 20170075008
    Abstract: A method for use in surveying a subsurface region beneath a body of water by detecting S waves propagating through the subsurface region. The method comprises using a first sensor configuration to detect mixed S and P waves on or in the subsurface region, using a second sensor configuration located on or in relatively close proximity to the subsurface region to detect P waves in the water, and using the P waves detected in the water to compensate the detected mixed S and P waves, and thereby attenuate the effects of P waves in the mixed S and P waves.
    Type: Application
    Filed: May 6, 2015
    Publication date: March 16, 2017
    Applicant: STATOIL PETROLEUM AS
    Inventors: Harald WESTERDAHL, Mark THOMPSON, Lasse AMUNDSEN
  • CENTRALIZER
    Publication number: 20170074055
    Abstract: A centralizer includes a centralizer body to be situated at the outer surface of a pipe string in the form of casing, liner, or the like used while drilling, the centralizer body being formed with a plurality of outer centralizer blades arranged in an inclined manner to the longitudinal axis thereof, wherein the centralizer body has an separate split inner tube secured to the pipe string by means of a press fit, and low friction inner surface of the centralizer body and separate center tube facing each other are made from low friction material.
    Type: Application
    Filed: November 4, 2016
    Publication date: March 16, 2017
    Applicant: Statoil Petroleum AS
    Inventors: Morten EIDEM, Tore WELTZIN, Gaute GRINDHAUG, Jafar ABDOLLAHI
  • Method and apparatus for generating steam for the recovery of hydrocarbon
    Patent number: 9593563
    Abstract: The instant disclosure provides a method of generating steam for the recovery of hydrocarbon from a hydrocarbon producing system including (i) generating supercritical steam from water; (ii) converting the supercritical steam to a subcritical steam; and (iii) injecting the subcritical steam into the system.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: March 14, 2017
    Assignee: STATOIL PETROLEUM AS
    Inventors: Sten Egil Johnsen, Leif Kåre Grønstad, Carsten Frithjof Sørlie
  • PRODUCING HYDROCARBONS FROM A SUBSURFACE FORMATION
    Publication number: 20170067329
    Abstract: A system and method for producing hydrocarbons from a subsurface hydrocarbon-bearing formation. The system includes a production well, at least part of the production well located in a portion of the hydrocarbon-bearing formation. A heating well is also provided, at least part of the heating well located in a portion of the hydrocarbon-bearing formation; wherein the heating well includes a main well and a plurality of smaller bore lateral wells extending into the hydrocarbon-bearing formation. The smaller bore lateral wells improve heat distribution within the formation, and so fewer heating wells are required to achieve the same effect as using heating wells without smaller bore lateral wells.
    Type: Application
    Filed: February 27, 2015
    Publication date: March 9, 2017
    Applicant: STATOIL PETROLEUM AS
    Inventors: Margrete Hånes WESENBERG, Håkon HØGSTØL
  • Well treatment
    Patent number: 9587166
    Abstract: The present invention provides a method for inhibiting scale formation within a hydrocarbon producing system (e.g. a subterranean formation), said method comprising contacting said system with a clay mineral, an organosilane and a scale inhibitor.
    Type: Grant
    Filed: August 19, 2010
    Date of Patent: March 7, 2017
    Assignee: STATOIL PETROLEUM AS
    Inventors: Niall Fleming, Kari Ramstad
  • Method for storing carbon dioxide compositions in subterranean geological formations and an arrangement for use in such methods
    Patent number: 9586759
    Abstract: A method and arrangement are proposed for injecting CO2 into a subterranean aquifer for storage therein. In order to reduce the effects of water evaporation from brine in the aquifer when dry CO2 is injected into the aquifer, the CO2 is supplied mixed with a salt-lean fluid, i.e. a fluid that contains a low concentration of ions that can precipitate out as salts. The mixing may take place at the wellhead, with the CO2 salt-lean fluids supplied via separate low-grade material pipelines. The proportion of CO2 and salt-lean fluid in the mixture is such as to obtain a CO2 composition that is saturated with salt-lean fluid at the site of injection into the aquifer. By injecting saturated or “wet” CO2, less water is evaporated from the brine and the salt precipitation is greatly reduced, so keeping the pore spaces clear and providing an increased accessible pore volume for CO2 storage.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: March 7, 2017
    Assignee: STATOIL PETROLEUM AS
    Inventors: Gelein De Koeijer, Jan Henrik Borch
  • Method and apparatus for drilling and lining a wellbore
    Patent number: 9567818
    Abstract: Apparatus for drilling and lining a wellbore is described herein. A method of drilling and lining a wellbore is also described herein. A liner hanger is provided, secured in use on a liner. The liner hanger is operable selectively to be set and unset. The liner hanger is adapted to support the liner within an existing casing when set and to release the liner from the casing when unset. A liner hanger setting tool is provided, secured in use on a drill string. The liner hanger setting tool is actuatable selectively to set and unset the liner hanger. The liner hanger setting tool is operable selectively to be activated and deactivated. The liner hanger setting tool is adapted to attach to the liner and/or liner hanger when activated, to support the liner, and to release from the liner and/or liner hanger when deactivated.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: February 14, 2017
    Assignee: STATOIL PETROLEUM AS
    Inventors: Morten Eidem, Steinar Wasa Tverlid, Jafar Abdollahi, Arne Torsvoll
  • CO desorption without stripper
    Patent number: 9566539
    Abstract: A CO2 desorption method and equipment for performing this method is described. More specific, a method for desorbing CO2 from an absorption fluid without involving a traditional stripper but instead using a heat exchanger as a flash-tank is disclosed. Further described is the utilization of cooling heat from a condenser for cooling the lean absorbent fluid.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: February 14, 2017
    Assignee: STATOIL PETROLEUM AS
    Inventor: John Arild Svendsen
  • Continuously stirred tank reactor absorber and flash tank stripper system
    Patent number: 9545597
    Abstract: The invention relates to a process for separation or purification of gaseous streams by removal of acid gases using a liquid amine solution. The process involves the steps of —contacting the gaseous stream with liquid lean amine solution in at least one continuous flow stirred-tank reactor (10; 10a, 10b; 10c); —removing a sweetened gaseous flow from said continuous flow stirred-tank reactor (10); —removing rich amine from said continuous flow stirred-tank reactor (10; 10a, 10b; 10c) for regeneration; —passing rich amine solution through at least one flash tank stripper 20; 20a, 20b; 20c; —removing acid gases and vapor from said flash tank stripper 20; 20a, 20b; 20c; —removing lean amine from said flash tank stripper for recirculation to said continuous flow stirred-tank reactor (10; 10a, 10b; 10c).
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: January 17, 2017
    Assignee: STATOIL PETROLEUM AS
    Inventors: John Arild Svendsen, Steinar Pedersen, Berit F. Fostås
  • Autonomous valve
    Patent number: 9534470
    Abstract: The invention relates to a method and apparatus for of controlling the flow of a fluid. The fluid comprises a liquid phase and a dissolved gas phase. The fluid passes through a valve, the valve comprising a fluid inlet and a movable body located in a flow path through the valve, the movable body being arranged to move freely relative to the opening of the inlet to vary the flow-through area through which the fluid flows by means of the Bernoulli effect. The dimensions of the valve are such that flow of the fluid past the movable body causes a drop in pressure to below the bubble point of the gas phase in the liquid phase, thereby increasing flow of the fluid through the valve.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: January 3, 2017
    Assignee: STATOIL PETROLEUM AS
    Inventors: Haavard Aakre, Vidar Mathiesen, Bjørnar Werswick
  • Centralizer
    Patent number: 9534456
    Abstract: A centralizer includes a centralizer body to be situated at the outer surface of a pipe string in the form of casing, liner, or the like used while drilling, the centralizer body being formed with a plurality of outer centralizer blades arranged in an inclined manner to the longitudinal axis thereof, wherein the centralizer body has an separate split inner tube secured to the pipe string by means of a press fit, and low friction inner surface of the centralizer body and separate center tube facing each other are made from low friction material.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: January 3, 2017
    Assignee: STATOIL PETROLEUM AS
    Inventors: Morten Eidem, Tore Weltzin, Gaute Grindhaug, Jafar Abdollahi
  • THE PREVENTION OF SURGE WAVE INSTABILITIES IN THREE PHASE GAS CONDENSATE FLOWLINES
    Publication number: 20160367957
    Abstract: There is provided a process for the prevention or reduction of surge wave instabilities during the transport in a flowline of a three phase gas condensate comprising a gas phase, an aqueous phase and a condensate phase, characterized in that a dispersing agent is added to the three phase gas condensate which is able to disperse the aqueous phase in the condensate phase or the condensate phase in the aqueous phase, and a means for the prevention or reduction of surge wave instabilities during the transportation of a three phase gas condensate.
    Type: Application
    Filed: February 24, 2014
    Publication date: December 22, 2016
    Applicant: STATOIL PETROLEUM AS
    Inventors: Magnus NORDSVEEN, Robert ORR, Bjørn MELAND, Terje SIRA
  • Subsea compressor cleaning method wherein the cleaning liquid is retrieved from the multiphase process fluid
    Patent number: 9518588
    Abstract: There are described methods and apparatus for operating and/or cleaning a compressor. In an embodiment, a first fluid comprising gas may be passed through the compressor, while the compressor operates to compress the first fluid. A second fluid may be passed through the compressor, the second fluid comprising gas and liquid from at least one well. The second fluid may be passed through the compressor for a limited time period to clean a surface inside the compressor, while the compressor operates to compress the second fluid.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: December 13, 2016
    Assignee: Statoil Petroleum AS
    Inventors: Lars Brenne, Tor Bjørge, Harald Underbakke, Svend Tarald Kibsgaard
  • SUBSEA PROCESSING
    Publication number: 20160348490
    Abstract: There is described subsea apparatus and a method for processing fluid from a well. In an embodiment, a pipeline (6) may be arranged to carry the multiphase fluid containing liquid and gas from the well. An outlet (10) extending through a wall of the pipeline may let gas out of the pipeline from said region and through the outlet to separate said gas and liquid. A compressor may be connected to the outlet to compress the separated gas. The separated liquid and the compressed gas may be combined. Separated liquid may be conveyed along a sloping portion of the pipe to a low point in the seabed terrain, and may be conveyed to a pump for boosting the flow of liquid. The pump may be located in an excavated hole or glory hole below the seabed.
    Type: Application
    Filed: February 5, 2015
    Publication date: December 1, 2016
    Applicant: STATOIL PETROLEUM AS
    Inventors: Henning HOLM, William BAKKE, Tor Arne GUNNERØD
  • DETERMINING A COMPONENT OF A WAVE FIELD
    Publication number: 20160334527
    Abstract: There is described embodiments relating to a method of determining a wave field in an anisotropic subsurface of the Earth. The method includes numerically solving a decoupled quasi-acoustic single wave mode wave equation based on spatially varied anisotropic parameters, to determine the wave field in the anisotropic subsurface.
    Type: Application
    Filed: January 9, 2015
    Publication date: November 17, 2016
    Applicant: STATOIL PETROLEUM AS
    Inventors: Sheng Xu, Hongbo Zhou
  • INVERSION METHOD
    Publication number: 20160334532
    Abstract: A method of estimating electromagnetic parameters of a geological structure, comprising: providing controlled source electromagnetic, CSEM, data of the structure, calculating a numerical model representing electromagnetic parameters of the structure and generating simulated CSEM data, discretising the numerical model based on prior knowledge of the structure, defining a functional for minimising the distance between said simulated CSEM data and said CSEM data, wherein the functional comprises a regularisation term which depends on prior knowledge of said structure.
    Type: Application
    Filed: January 8, 2014
    Publication date: November 17, 2016
    Applicant: STATOIL PETROLEUM AS
    Inventors: Torgeir WIIK, Eirik Øverland DISCHLER, Janniche Iren NORDSKAG, Anh Kiet NGUYEN