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    • 3. 发明申请
    • RISER INSTALLATION FROM OFFSHORE FLOATING PRODUCTION UNIT
    • 来自海洋浮选生产单位的更高安装
    • WO2006098890A3
    • 2007-11-29
    • PCT/US2006007419
    • 2006-03-02
    • SINGLE BUOY MOORINGSPOLLACK JACKRIGGS DAVID CGUO FENG
    • POLLACK JACKRIGGS DAVID CGUO FENG
    • F16L1/12
    • E21B17/015
    • A method for installing risers so they extend from a FPU (floating production unit) to multiple subsea hydrocarbon wells of an oil field, which avoids damage to the pipe sections and that is economical. As pipe sections are connected to a near end (56) of a pipe string portion (68B-68D) that lies at the FPU, a tug boat (30) pulls the far end (65) of the pipe string toward a well head. Initially, a long pull line (34) extends from a winch (32) on the tug boat, in a double catenary curve to the far end of the pipe string. The winch is operated to shorten the pull line until the pipe string extends in a double catenary curve (60). Tension in the pipe string is maintained at a proper level during installation by maintaining the near end portion of the pipe string so it extends at a near end angle (70) to the vertical that continually lies within a predetermined range, such as from 3° to 12°.
    • 一种用于安装立管的方法,使其从FPU(浮动生产单元)延伸到油田的多个海底烃井,这避免了管段的损坏,这是经济的。 当管段连接到位于FPU处的管柱部分(68B-68D)的近端(56)时,拖船(30)将管柱的远端(65)拉向井口。 最初,长拉线(34)从牵引船上的绞盘(32)以双链状曲线延伸到管柱的远端。 操作绞车以缩短拉线,直到管柱以双链状曲线延伸(60)。 管柱中的张力在安装期间通过保持管柱的近端部分保持在适当的水平,使得其以与连续位于预定范围(例如3°)内的垂直方向的近端角(70)延伸 至12°。