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    APPARATUS AND METHOD FOR TUBING HANGER INSTALLATION
    2.
    发明公开
    APPARATUS AND METHOD FOR TUBING HANGER INSTALLATION 审中-公开

    公开(公告)号：US20230399913A1

    公开(公告)日：2023-12-14

    申请号：US18246614

    申请日：2021-10-18

    Applicant: CCB Subsea AS

    Inventor： Helge Løken

    IPC: E21B33/035 ,  E21B33/043

    CPC classification number: E21B33/035 ,  E21B33/043

    Abstract: A method for operating an apparatus for installing a tubing hanger in a subsea wellhead or X-mas tree without hydraulic cables from the surface and without valves for controlling hydraulic functions. The method includes: providing an apparatus for installing the tubing hanger; preparing the apparatus for installation; actuating the tubing hanger's locking function via pressurized completion fluid that causes direct actuation of ring pistons that are arranged to operate the locking sleeve and the locking segments of the tubing hanger; verifying the tubing hanger is locked; and releasing the apparatus mechanically or hydraulically from the installed tubing hanger.

    APPARATUS FOR AND METHOD OF MONITORING A DRILLING INSTALLATION
    3.
    发明公开
    APPARATUS FOR AND METHOD OF MONITORING A DRILLING INSTALLATION 审中-公开

    公开(公告)号：US20230340871A1

    公开(公告)日：2023-10-26

    申请号：US17791215

    申请日：2021-01-08

    Applicant: AKER SOLUTIONS AS

    Inventor： JOAKIM MARTENS ,  GEIR IVAR HOLBERG ,  MARTIN PEDERSEN

    IPC: E21B47/117 ,  E21B33/043

    CPC classification number: E21B47/117 ,  E21B33/043

    Abstract: An assembly includes two tubular elements, a primary and a secondary seal arranged between the two tubular elements, a seal cavity formed between the two tubular elements and the primary and the secondary seal, and a seal monitoring apparatus having a housing and a position sensor. The housing has a chamber enclosing a separator which divides the chamber into a first and a second sub-chamber. The first sub-chamber is fluidly connected to the seal cavity and is filled with a hydraulic fluid. The separator is movable in a first direction relative to the housing to increase a volume of the first sub-chamber and decrease a volume of the second sub-chamber, and in a second direction to decrease the volume of the first sub-chamber and increase the volume of the second sub-chamber. The position sensor generates an electrical signal which represents a position of the separator relative to the housing.

    METHODS AND APPARATUS FOR FORMING AN OFFSHORE WELL
    8.
    发明申请
    METHODS AND APPARATUS FOR FORMING AN OFFSHORE WELL 审中-公开

    公开(公告)号：US20190194895A1

    公开(公告)日：2019-06-27

    申请号：US15771710

    申请日：2016-10-31

    Applicant: Maersk Drilling A/S ,  TOTAL S.A.

    Inventor： Michael Kannegaard ,  Hicham Chajai

    IPC: E02B17/02 ,  E21B33/035 ,  E21B33/043 ,  E21B19/00 ,  E21B33/14

    CPC classification number: E02B17/02 ,  E21B19/002 ,  E21B19/004 ,  E21B33/035 ,  E21B33/043 ,  E21B33/143 ,  E21B41/08

    Abstract: A method for forming an offshore well comprises forming a well structure (1) which includes a lower well portion extending below a seabed and an upper well portion (2) extending upwardly between the seabed (18) and a terminating upper end (3) of the well structure, wherein the well structure comprises a plurality of concentrically arranged tubular strings (22) and at least one annulus (48) defined therebetween. The method includes steps for minimising the bending stiffness of the upper well portion. In one example minimising the bending stiffness of the upper well portion may comprise partially filling at least one annulus with cement (52) to a height which: is intermediate the seabed and the terminating upper end of the well structure. In another example minimising the bending stiffness of the upper well portion may comprise providing a cement disruptor within at least one annulus and locating cement within said at least one annulus to define a cement sheath, wherein the cement disruptor, for example sleeve (122), reduces resistance of at least a portion of the cement sheath to bending of the upper well portion. In a further example minimising the bending stiffness of the upper well portion may comprise locating a flexible material within at least one annulus; and In a further example minimising the bending stiffness of the upper well portion may comprise varying the bending stiffness along at least one of the plurality of tubular strings.

    System and Method for Foundation of Wellheads
    9.
    发明申请
    System and Method for Foundation of Wellheads 审中-公开

    公开(公告)号：US20180355699A1

    公开(公告)日：2018-12-13

    申请号：US15778438

    申请日：2016-11-24

    Applicant: NeoDrill AS

    Inventor： Wolfgang Mathis ,  Harald Strand

    IPC: E21B41/00 ,  E02D27/52

    CPC classification number: E02D27/18 ,  E02D27/50 ,  E02D27/525 ,  E21B33/043 ,  E21B41/0007 ,  E21B41/08

    Abstract: A wellhead foundation is for one or more subsea wells. The wellhead foundation has a suction foundation provided with a housing with an open bottom and a top which is closable with a top cover, and one or more pipes being attached to the housing and extending from the top of the housing and at least over a substantial part of the vertical extent of the housing towards or beyond the open bottom of the housing inside or outside of the periphery of the housing, and a straight upper portion of each pipe projecting up above the top of the housing and forming an upper well-pipe portion which forms part of a high-pressure barrier in the well. The straight upper pipe portion of each pipe is arranged parallel to the center axis of the housing. A method of establishing a subsea wellhead foundation is described as well.

    System and Method for Foundation of Wellheads
    10.
    发明申请
    System and Method for Foundation of Wellheads 审中-公开

    公开(公告)号：US20180347140A1

    公开(公告)日：2018-12-06

    申请号：US15778427

    申请日：2016-11-24

    Applicant: NeoDrill AS

    Inventor： Wolfgang Mathis ,  Harald Strand

    IPC: E02D27/18 ,  E02D27/50 ,  E21B33/043

    CPC classification number: E21B41/0007 ,  E02D27/18 ,  E02D27/50 ,  E02D27/525 ,  E21B33/043 ,  E21B41/08

    Abstract: A wellhead foundation is for one or more subsea wells. The wellhead foundation has a suction foundation with a housing with an open bottom and a top which is closable with a top cover, and one or more pipes being attached to the housing and extending from the top of the housing and at least over a substantial part of the vertical extent of the housing and away from the housing at least in a vertical direction. A straight upper part of each pipe projects up above the top of the housing and forms an upper conductor-casing portion which is arranged to receive the upper well-pipe portion and forms part of a low-pressure barrier in the well. The straight upper pipe portion of each pipe is arranged parallel to the center axis of the housing. A method of establishing a subsea wellhead foundation is described as well.

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