Patents Assigned to STATOIL PETROLEUM AS
  • Patent number: 10890055
    Abstract: The present invention provides a method for inverting oil continuous flow to water continuous flow and reaching one or more desired production parameters in a well producing fluid containing oil and water or inverting oil continuous flow to water continuous flow and reaching one or more desired transport parameters in a pipeline transporting fluid containing oil and water wherein there is a pump in the well or transport pipeline, comprising the following steps: (a) reducing the pump frequency until either inversion from oil continuous production to water continuous flow is achieved or a predefined stopping condition is reached; (b) if inversion has not been achieved in step (a), adjusting the wellhead pressure in the well or the pressure at the reception side of the transport line to achieve the inversion; (c) stabilising the flow at the condition reached in steps (a) or (b); and (d) carefully adjusting one or both of the wellhead pressure and pump frequency to reach the one or more desired production paramet
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: January 12, 2021
    Assignee: STATOIL PETROLEUM AS
    Inventors: Alexey Pavlov, Kjetil Fjalestad
  • Patent number: 10865619
    Abstract: A method of plugging a well in a plug and abandonment procedure includes providing a tubing in a wellbore, in a location for a well plug, the tubing is provided with an internal cable section placed inside of the tubing, and forming a plug in the well in said location for the well plug across the width of the tubing and a surrounding wellbore annulus to create a permanent barrier without pulling the tubing from the wellbore. The step of forming the plug includes substantially removing the internal cable section inside the tubing and forming a fluid-tight seal in the tubing where the internal cable section has been removed, for separating, on either side of the seal, first and second fluid volumes of the tubing.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: December 15, 2020
    Assignee: STATOIL PETROLEUM AS
    Inventors: Pål Viggo Hemmingsen, Gjermund Grimsbo
  • Patent number: 10845493
    Abstract: A method of estimating a set of physical parameters, the method comprising iteratively inverting an equation to minimise an error between simulated data and measured data and to provide an estimated set of physical parameters, wherein said iteratively inverting comprises at least a first inversion step and a second inversion step and wherein the simulated data depend on a model vector representing the set of physical parameters, applying a compression operator to the model vector representing the set of physical parameters to reduce the number of free variables and to produce a compressed model vector and varying the compression operator between the first inversion step and the second inversion step.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: November 24, 2020
    Assignee: STATOIL PETROLEUM AS
    Inventors: Torgeir Wiik, Janniche Iren Nordskag, Anh Kiet Nguyen, Emmanuel Causse
  • Publication number: 20200271802
    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: May 11, 2020
    Publication date: August 27, 2020
    Applicant: STATOIL PETROLEUM AS
    Inventors: Sheng XU, Hongbo ZHOU
  • Patent number: 10724349
    Abstract: A subsea wellhead assembly 1 comprises: a subsea wellhead 2; a template 6 associated with the wellhead; subsea riser system equipment 4 connected to the wellhead and one or more connection members. The subsea riser system equipment 4 is also connected to the template 6 by the one or more connection members so that lateral support is provided to the subsea riser system equipment 4 from the template. A method of installing the subsea wellhead assembly 1 is also provided.
    Type: Grant
    Filed: December 24, 2015
    Date of Patent: July 28, 2020
    Assignee: STATOIL PETROLEUM AS
    Inventor: Per Osen
  • Patent number: 10705233
    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: Grant
    Filed: January 9, 2015
    Date of Patent: July 7, 2020
    Assignee: STATOIL PETROLEUM AS
    Inventors: Sheng Xu, Hongbo Zhou
  • Patent number: 10697271
    Abstract: A method for achieving zonal control in a wellbore when using casing or liner drilling includes providing a slotted tubular section in a wellbore while drilling; providing a sleeve adjacent to and radially overlapping with the slotted tubular section, while drilling; and moving the sleeve relative to the slotted tubular section so as to permit and/or restrict flow through the slotted tubular section in one or more selected zones.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: June 30, 2020
    Assignee: STATOIL PETROLEUM AS
    Inventors: Morten Eidem, Gjermund Grimsbo, Torgeir Wenn
  • Patent number: 10697286
    Abstract: A method of identifying a material and/or condition of a material in a borehole is described, together with related apparatus. The material may either be between first and second tubulars or between a first tubular and a wall of the borehole. The method may include providing a reference quality factor (Qreference) for one or more known materials in one or more known conditions and measuring a downhole quality factor (Qmeasured) of the material and/or material condition to be identified. A spectral ratio ?=(Qmeasured/Qreference) may then be computed for one or more known materials under one or more known conditions followed by an analysis of the spectral ratios to identify the material and/or condition of the material in the borehole.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: June 30, 2020
    Assignee: STATOIL PETROLEUM AS
    Inventor: Ioan-Alexandru Merciu
  • Patent number: 10677951
    Abstract: A method of processing controlled source electromagnetic (CSEM) data is provided for reducing the airwave contribution. CSEM data are acquired, for example using a conventional towed source (4) and receiver (5) arrangement. The recorded data are weighted in accordance with the geometrical spreading of the airwave component. The differences between pairs of weighted data records are then formed.
    Type: Grant
    Filed: January 19, 2010
    Date of Patent: June 9, 2020
    Assignee: STATOIL PETROLEUM AS
    Inventors: Lars Ole Løseth, Lasse Amundsen, Arne Johannes Kaaijk Jenssen
  • Patent number: 10656300
    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: Grant
    Filed: January 8, 2014
    Date of Patent: May 19, 2020
    Assignee: STATOIL PETROLEUM AS
    Inventors: Torgeir Wiik, Eirik Øverland Dischler, Janniche Iren Nordskag, Anh Kiet Nguyen
  • Patent number: 10627283
    Abstract: A method of dynamically generating an acoustic noise map of an industrial zone to be used for protecting operators within the zone from exposure to acoustic noise above a safety threshold, the method comprising collecting acoustic noise data using a network of wireless acoustic sensors located within said zone, generating an acoustic noise map using the collected noise data and a numerical model of the propagation of acoustic noise within the zone.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: April 21, 2020
    Assignee: STATOIL PETROLEUM AS
    Inventors: Simon Carlsen, Erling Lunde
  • Patent number: 10571048
    Abstract: A method and apparatus for direct tie-in of pipelines are disclosed. An apparatus is attached to a portion of a pipeline, the apparatus including a tensioning member and a buoyancy element attached to the tensioning member such that, when submerged, the pipeline is deflected as a result of a buoyancy force tensioning the tensioning member, and on releasing the buoyancy element, direct tie-in of the pipeline is performed.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: February 25, 2020
    Assignee: STATOIL PETROLEUM AS
    Inventors: Geir Endal, Jens Haugen
  • Patent number: 10556210
    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: Grant
    Filed: February 24, 2014
    Date of Patent: February 11, 2020
    Assignee: STATOIL PETROLEUM AS
    Inventors: Magnus Nordsveen, Robert Orr, Bjørn Meland, Terje Sira
  • Patent number: 10527346
    Abstract: A method for start-up of a liquefied natural gas (LNG) plant, the plant including a liquefaction unit arranged in a flow path of the plant, including removing LNG from a first location in the flow path downstream of the liquefaction unit; vaporizing the removed LNG, or heating the removed LNG so that the removed LNG is transformed to gas phase; and re-admitting the vaporized or transformed LNG to the flow path at a second location upstream of the liquefaction unit. A corresponding LNG plant is also provided.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: January 7, 2020
    Assignee: STATOIL PETROLEUM AS
    Inventors: Sivert Vist, Tore Løland, Morten Svenning, Silja Eriksson Gylseth
  • Patent number: 10520112
    Abstract: A method and apparatus are provided for laying pipelines. The apparatus is attached to a portion of a pipeline and includes a tensioning member and a buoyancy element attached to a mid-portion of the tensioning member. When the buoyancy element is submerged, the buoyancy force tensions the tensioning member, and the pipeline will take the intended deflected shape to follow seabed depressions.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: December 31, 2019
    Assignee: STATOIL PETROLEUM AS
    Inventors: Geir Endal, Jens Haugen
  • Patent number: 10480279
    Abstract: A method of sealing a well comprises creating one or more openings in a tubing installed in a wellbore, in a location for a well seal; using a wireline to locate a stinger in that location; setting the stinger in that location; and forming a seal in the well in that location, by injecting sealant through said stinger.
    Type: Grant
    Filed: December 24, 2018
    Date of Patent: November 19, 2019
    Assignee: STATOIL PETROLEUM AS
    Inventors: Pål Viggo Hemmingsen, Gjermund Grimsbo, Alastair Buchanan
  • Patent number: 10481289
    Abstract: A downhole installation comprises: a first pipe layer 8, a second pipe layer 10 about the first pipe layer 8, an annulus 12 between the first pipe layer 8 and the second pipe layer, and a geological formation outside of the second pipe layer 10.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: November 19, 2019
    Assignee: STATOIL PETROLEUM AS
    Inventor: Ioan-Alexandru Merciu
  • Patent number: 10473817
    Abstract: A method is provided of processing data representing a physical system, the method comprising: providing (P2) input data representing differences in the physical system between a first state and a second state of the physical system; and inverting (P5) the input data, or data derived therefrom, in accordance with a parameterized model (PI) of the physical system to obtain differences in the parameters of the model between the first state and the second state, with parameters of the model representing properties of the physical system; wherein the inverting step is performed (P3 to P6) for a plurality of different perturbations (P4) of the parameterized model and/or of the data to obtain a plurality of sets of differences in the parameters of the model; and wherein a statistical analysis (P7) of the plurality of sets of differences is performed to obtain statistical characteristics of the differences in the parameters of the model.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: November 12, 2019
    Assignee: STATOIL PETROLEUM AS
    Inventor: Ulrich Theune
  • Patent number: 10457849
    Abstract: The present invention provides, a method of controlling scale formation in a hydrocarbon producing system, comprising; (i) injecting nanoparticles into said system to function as nuclei for scale growth; (if) allowing scale growth to occur on said nanoparticles to produce nanoparticles comprising scale; and. (in) optionally recovering said nanoparticles comprising scale.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: October 29, 2019
    Assignee: STATOIL PETROLEUM AS
    Inventors: Nasser Ghorbani, Tore Tjomsland, Arnd Wilhelms
  • Patent number: 10443333
    Abstract: There is provided a method for removing iron-containing casing from a well bore comprising providing a cathode in said well bore, wherein said cathode is connected to the negative pole of a power source; connecting said iron-containing casing to the positive pole of said power source; injecting an electrolyte into said well bore, wherein said electrolyte contacts said iron-containing casing and said cathode; applying a current so that the iron in said iron-containing casing is oxidised to iron cations; allowing said iron cations to dissolve in said electrolyte; and removing said electrolyte from said well bore. Also provided are a system for removing iron-containing casing from a well bore, a method for monitoring the removal of an iron-containing casing from a well bore and a method for plugging and abandoning a well.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: October 15, 2019
    Assignee: STATOIL PETROLEUM AS
    Inventors: Gjermund Grimsbo, Marcus Fathi, Torgeir Wenn, Pål Viggo Hemmingsen, Astrid Bjørgum