Patents Assigned to STATOIL PETROLEUM AS
  • Flow control device and flow control method
    Patent number: 9353608
    Abstract: A method and apparatus is disclosed for controlling the flow of fluid in oil and/or gas production, involving a control device or an autonomous valve (2) operating by the Bernoulli principle and comprising a moveable disk or body (9) provided within a housing (4) for opening and closing said valve (2), involving use of a material (24) within the valve (2) that changes its properties as to shape and/or volume and/or elastic modulus when exposed to a chemical substance contained in the flow of fluid and thus altering said flow of fluid.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: May 31, 2016
    Assignee: STATOIL PETROLEUM AS
    Inventor: Kjetil Johannessen
  • System and method for passing matter in a flow passage
    Patent number: 9346634
    Abstract: A system is provided for passing matter in a flow passage of an oil and/or gas drilling or production installation, in particular for passing trash or drill cuttings in a drilling fluid return line. The system includes at least two valves arranged in series in the passage; and a control device configured to selectively or sequentially actuate the at least two valves, such that the material is allowed to pass the at least two valves in the passage. A method is also provided for passing trash or drill cuttings in a drilling fluid return line.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: May 24, 2016
    Assignee: Statoil Petroleum AS
    Inventor: Nils Lennart Rolland
  • Lining of well bores with expandable and conventional liners
    Patent number: 9347296
    Abstract: Reducing the diameter of a well bore has many advantages. To achieve this a subsurface well bore is provided comprising one or more expandable sleeve components, preferably expandable liners (27, 271), each expandable sleeve component being fully overlapped by one or more non expandable sleeve component, preferably conventional liners (28, 29), such that the interior of the well bore is cased entirely by non expandable sleeve components (28, 29). In addition the through holes (34a) for downhole lines can be provided within the well head (34) rather than the tubing hanger (33). As the tubing hanger does not need to provide space for through holes and associated mounting couplings, its diameter can be reduced, thus reducing the internal diameter of the well bore by several inches.
    Type: Grant
    Filed: September 4, 2009
    Date of Patent: May 24, 2016
    Assignee: STATOIL PETROLEUM AS
    Inventors: Audun Faanes, Halvor Kjørholt, Torstein Vinge
  • Riser recoil damping
    Patent number: 9334697
    Abstract: An apparatus for use with a subsea well includes an upper riser part, a lower riser part, and a weak link coupling the upper and lower riser parts together; and a mechanism coupled between the upper and lower riser parts for damping recoil of the upper riser part following a breaking of the weak link, damping resulting from a plastic deformation of a component or components of the mechanism occurring as the upper and lower riser parts separate.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: May 10, 2016
    Assignee: STATOIL PETROLEUM AS
    Inventors: Lorents Reinås, Tore Geir Wernø, Morten Sæther
  • WIND TURBINE CONTROL
    Publication number: 20160123304
    Abstract: A method of dynamically controlling a wind turbine having a rotor supporting a plurality of blades and a main bearing supporting the rotor, the method comprising detecting a load profile around the circumference of the main bearing, generating a control signal based on the detected load profile and dynamically adjusting the load profile of the main bearing using the control signal.
    Type: Application
    Filed: June 5, 2014
    Publication date: May 5, 2016
    Applicant: STATOIL PETROLEUM AS
    Inventors: Svend Tarald Kibsgaard, Jone Torsvik, Lars Brenne
  • FAIRING AND METHOD
    Publication number: 20160102783
    Abstract: A fairing device for the reduction of vortex-induced vibrations or motions, and for minimizing the drag about a substantially cylindrical element immersed in a fluid medium, comprising; a fairing rotatably mounted about the cylindrical element, the fairing comprising a shell with a mainly cylindrical cross-sectional shape with an outer diameter (D) following the outer diameter of the cylindrical element from an upward stagnation point of 0 degrees to at least +/?90 degrees, and which at +/?90 degrees continues as two fin-like portions in an aft direction, whereby the fin-like portions are convexly curved aft of +/?90 degrees thus tapering towards each other and are defining a tail end opening or gap less than the fairing standoff height. A method for mounting, storage, and deployment of the fairing device is also disclosed.
    Type: Application
    Filed: July 3, 2013
    Publication date: April 14, 2016
    Applicant: Statoil Petroleum AS
    Inventor: Kjetil Skaugset
  • Subsea compression
    Patent number: 9303498
    Abstract: Subsea apparatus (10) for processing a well stream (2) and a method of processing a well stream subsea is described. In an embodiment, liquid (5) and gas (3) contained in the well stream (2) is separated. The separated gas (3) is cooled and the cooled gas (32) is combined with the separated liquid (5) to form a wet gas (52) for a compressor (90). An active cooling arrangement (30) may be used in one example to enhance the cooling effect provided by the cooler (30). Advantageously, the apparatus (10) can be arranged compactly, and may be provided on a subsea retrievable module.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: April 5, 2016
    Assignee: STATOIL PETROLEUM AS
    Inventors: Tom Grimseth, William Bakke, Tor Bjørge, Håvard Torpe, Håvard Eidsmoen, Birgitte Nordheim Tveter, Harald Underbakke, Lars Brenne
  • ESTIMATING INTERVAL VELOCITIES
    Publication number: 20160091621
    Abstract: A method of estimating a velocity of a geological layer includes a. providing a first, initial model including an interval velocity associated with a subsurface location and an uncertainty associated with the interval velocity; b. providing data including an actual or approximated root-mean-square (RMS) velocity associated with a subsurface location and an uncertainty associated with the RMS velocity; and c. estimating a second model including an interval velocity associated with a subsurface location and an uncertainty associated with the interval velocity, based on the interval velocity and the uncertainty of the first model, and the RMS velocity and the uncertainty of the data.
    Type: Application
    Filed: December 8, 2015
    Publication date: March 31, 2016
    Applicant: STATOIL PETROLEUM AS
    Inventor: Arild BULAND
  • Deadleg
    Patent number: 9297237
    Abstract: An essentially cylindrical deadleg having a first cross sectional area at one end of the deadleg and a second cross sectional area, the first cross sectional area being smaller than the second cross sectional area.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: March 29, 2016
    Assignee: STATOIL PETROLEUM AS
    Inventors: Knud Lunde, Keijo Kinnari, Catherine Labes-Carrier
  • IMPROVEMENTS IN DETERMINING SUB-SURFACE TEMPERATURE
    Publication number: 20160077228
    Abstract: There is described a technique for determining a temperature at a region below the surface of the Earth. In an embodiment, a time of travel of a seismic wave following the emission from a source into the earth is provided, and the travel time is used to estimate the temperature. In one example, a model based on the travel time and a further component, which may for example be based on heat flow and a constant of proportionality between seismic velocity and thermal conductivity, may be used to estimate the temperature.
    Type: Application
    Filed: April 22, 2013
    Publication date: March 17, 2016
    Applicant: STATOIL PETROLEUM AS
    Inventor: Ketil HOKSTAD
  • METHOD OF STORING CO2
    Publication number: 20160075514
    Abstract: The present invention relates to a method of storing CO2 in a geological formation, said method comprising (i) injecting a first composition comprising CO2 into said formation; and (ii) injecting a second composition comprising CO2 and at least one CO2 soluble polymer into said formation, wherein steps (i) and (ii) are performed separately and in any order and wherein said first and second compositions are different.
    Type: Application
    Filed: April 17, 2014
    Publication date: March 17, 2016
    Applicant: STATOIL PETROLEUM AS
    Inventors: Bamshad NAZARIAN, Philip Sefton RINGROSE
  • METHOD OF ASSESSING HYDROCARBON SOURCE ROCK CANDIDATE
    Publication number: 20160077229
    Abstract: A method of assessing a hydrocarbon source rock candidate uses seismic data for a region of the Earth. The data are analysed to determine the presence, thickness and lateral extent of candidate source rock based on the knowledge of the seismic behaviour of hydrocarbon source rocks. An estimate is provided of the organic content of the candidate source rock from acoustic impedance. An estimate of the hydrocarbon generation potential of the candidate source rock is then provided from the thickness and lateral extent of the candidate source rock and from the estimate of the organic content.
    Type: Application
    Filed: November 27, 2015
    Publication date: March 17, 2016
    Applicant: STATOIL PETROLEUM AS
    Inventors: Helge LØSETH, Lars WENSAAS, Marita GADING, Kenneth DUFFAUT, Heinz Michael SPRINGER
  • Valve arrangement for a production pipe
    Patent number: 9279309
    Abstract: A tubular member has at least one drainage section including an inlet inlet and at least one self-adjustable flow control device to control the flow of fluid into the drainage section from a well. The flow control devices are located in an annular space surrounding a pipe between the inlet and an outlet is provided for fluid flowing into the drainage section. The annular space forms a flow path through the flow control device passing by a valve body arranged to adjust the flow area in response to the pressure difference across the flow control device and/or changes in density of the fluid. The flow control device includes a valve seat cooperating with the valve body. The valve body includes an annular resilient valve member arranged to be deformed at least in a radial direction, in order to reduce or increase the flow area through the flow control device.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: March 8, 2016
    Assignee: STATOIL PETROLEUM AS
    Inventors: Bjørnar Werswick, Haavard Aakre, Vidar Matheisen
  • METHOD FOR CO2 EOR AND STORAGE AND USE THEREOF
    Publication number: 20160053594
    Abstract: A method of Enhanced Oil Recovery from oil zones in a subterranean geological formation, and from oil zones, the method comprising: a first injecting step of injecting a first composition comprising CO2 into the subterranean geological formation for a period of time; a second injecting step of injecting a second composition comprising CO2 and a hydrocarbon into the subterranean geological formation for a period of time, wherein the first composition and the second composition are different; and extracting oil from the subterranean geological formation.
    Type: Application
    Filed: April 17, 2014
    Publication date: February 25, 2016
    Applicant: STATOIL PETROLEUM AS
    Inventors: Bamshad NAZARIAN, Philip Sefton RINGROSE
  • INCREASING HYDROCARBON RECOVERY FROM RESERVOIRS
    Publication number: 20160047179
    Abstract: A method, system and apparatus for producing hydrocarbons from a low permeability reservoir formation. A wellbore (3) with a plurality of fractures (7, 9) designated as one of a first (7) or a second (9) set of fractures is provided. A first fluid conduit (11) is formed by an annulus between an outer casing (10) of a tubular and an inner tubular (16) member, and is arranged to transport produced hydrocarbons. An interior of the inner tubular member forms a second fluid conduit (12) which is arranged to transport an injection fluid. A set of first openings (14) is provided in fluid connection with the first fluid conduit, each first opening being located to substantially align with one of a first set of fractures. A set of second openings (15) is provided in fluid connection with the second fluid conduit, each second opening being located to substantially align with one of a second set of fractures.
    Type: Application
    Filed: March 21, 2014
    Publication date: February 18, 2016
    Applicant: Statoil Petroleum AS
    Inventors: Halvor KJØRHOLT, Jan Håvard JØRANSON, Fredrik VARPE
  • ACOUSTIC MEASUREMENT TOOL
    Publication number: 20160041287
    Abstract: An acoustic measurement tool comprises a transmitter for generating acoustic signals and at least one acoustic receiver spaced from the transmitter and configured to receive an acoustic signal, generated by the transmitter, and which has encountered a medium of interest. Moreover, at least one acoustic reference receiver is located adjacent the transmitter and is configured to receive an acoustic signal, generated by the transmitter, prior to the acoustic signal encountering the medium of interest.
    Type: Application
    Filed: March 15, 2013
    Publication date: February 11, 2016
    Applicant: STATOIL PETROLEUM AS
    Inventor: Ioan-Alexandru MERCIU
  • Method of assessing hydrocarbon source rock candidate
    Patent number: 9244182
    Abstract: A method of assessing a hydrocarbon source rock candidate uses seismic data for a region of the Earth. The data are analyzed to determine the presence, thickness and lateral extent of candidate source rock based on the knowledge of the seismic behavior of hydrocarbon source rocks. An estimate is provided of the organic content of the candidate source rock from acoustic impedance. An estimate of the hydrocarbon generation potential of the candidate source rock is then provided from the thickness and lateral extent of the candidate source rock and from the estimate of the organic content.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: January 26, 2016
    Assignee: STATOIL PETROLEUM AS
    Inventors: Helge Løseth, Lars Wensaas, Marita Gading, Kenneth Duffaut, Heinz Michael Springer
  • Method for modifying an existing subsea arranged oil production well, and a thus modified oil production well
    Patent number: 9234402
    Abstract: Method to modify an existing subsea arranged oil production well having installed a hydraulically operated downhole valve, characterized in using coiled tubing technology to: arrange an electrically operated downhole pump in the production tubing, lock the hydraulically operated downhole valve in an open position by placing a sleeve body in the open positioned valve, arrange an electrically operated downhole valve above the downhole pump. A modified oil production well.
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: January 12, 2016
    Assignee: STATOIL PETROLEUM AS
    Inventor: Torstein Vinge
  • Process for simultaneously extracting and upgrading by controlled extraction a heavy hydrocarbon mixture
    Patent number: 9234407
    Abstract: The present invention provides a process for simultaneously extracting and upgrading a heavy hydrocarbon mixture, said process comprising: i) injecting supercritical or near-supercritical CO2 at a temperature of around the critical temperature and a pressure of from around the critical pressure into a heavy hydrocarbon deposit; and ii) removing a stream of CO2 from the deposit, which stream is charged with a hydrocarbon mixture having a lower average molecular weight than that of the heavy hydrocarbon deposit, wherein the removed CO2 is optionally recovered and either recycled for subsequent re-injection or injected for long-term sub-surface storage.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: January 12, 2016
    Assignee: STATOIL PETROLEUM AS
    Inventor: Trygve Meyer
  • Process for stabilizing an oil-in-water or water-in-oil emulsion
    Patent number: 9222035
    Abstract: A process for the preparation of at least one ARN acid or salt thereof comprising: (I) allowing at least one ARN acid salt to form during the production of crude oil in the presence of water; (II) removing at least 5 wt % of the formed at least one ARN acid salt, e.g. from the oil water interface; and optionally (III) converting said salt into an acid.
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: December 29, 2015
    Assignee: STATOIL PETROLEUM AS
    Inventors: Jens Emil Vindstad, Heidi Mediaas, Knut Vebjørn Grande