Invention Grant
US08641323B2 Method and apparatus for at sea pipe abandonment and recovery 有权
海管放弃和回收的方法和装置

  • Patent Title: Method and apparatus for at sea pipe abandonment and recovery
  • Patent Title (中): 海管放弃和回收的方法和装置
  • Application No.: US13062928
    Application Date: 2009-09-01
  • Publication No.: US08641323B2
    Publication Date: 2014-02-04
  • Inventor: Jonathan Richard Tame
  • Applicant: Jonathan Richard Tame
  • Applicant Address: GB Westhill
  • Assignee: Subsea 7 Limited
  • Current Assignee: Subsea 7 Limited
  • Current Assignee Address: GB Westhill
  • Agency: Levy & Grandinetti
  • Priority: GB0816390.9 20080908
  • International Application: PCT/EP2009/061258 WO 20090901
  • International Announcement: WO2010/026132 WO 20100311
  • Main IPC: F16L1/12
  • IPC: F16L1/12 F16L27/00
Method and apparatus for at sea pipe abandonment and recovery
Abstract:
A method of positioning on the sea floor, from a floating vessel, an unlaid end portion of a pipe that is being laid from its other end on the sea floor is disclosed. The method includes lowering the unlaid end portion of the pipe to a lowered position above the sea floor. Transfer of the load of the unlaid end portion of the pipe occurs from the lowering device to a line for suspending the unlaid end portion of the pipe. Lowering the line for suspending and the unlaid end portion of the pipe occurs. There is disclosed a corresponding method of recovery as well as associated apparatus. A method for effecting a subsea connection between one line and an object suspended below the surface of the sea by another line and associated apparatus are disclosed.
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