在浮式生产储油卸油装置(Floating Production Storage and Offloading,FPSO)不停产且3条拖船限位的状态下,简要分析FPSO受到的水流力作用,选择合适的限位方案进行旧上锚缆的拆除弃置和新上锚缆的安装,完成单点系泊上锚缆的整体更换,详...在浮式生产储油卸油装置(Floating Production Storage and Offloading,FPSO)不停产且3条拖船限位的状态下,简要分析FPSO受到的水流力作用,选择合适的限位方案进行旧上锚缆的拆除弃置和新上锚缆的安装,完成单点系泊上锚缆的整体更换,详述该方案在项目施工中的应用。该技术可实现FPSO不停产整体更换单点系泊上锚缆,避免FPSO单点系泊更换上锚缆造成油田停产。展开更多
A subsea wellhead equipped with obsolete vertical Christmas tree needs to be suspended for subsea tree recovery and subsequently to be permanently abandoned. Due to obsolete Christmas tree design combined with tubing ...A subsea wellhead equipped with obsolete vertical Christmas tree needs to be suspended for subsea tree recovery and subsequently to be permanently abandoned. Due to obsolete Christmas tree design combined with tubing inaccessibility issue,conventional subsea intervention method for setting downhole mechanical plug barriers with a semisubmersible rig or a riserless light well intervention vessel is not feasible to suspend the well. Attempt was made to suspend the well from a riserless light well intervention vessel by setting tubing mechanical plugs in 2017,but the mandrel of the tree running tool (TRT) was sheared off accidently while landing the TRT&subsea intervention lubricator (SIL) on the subsea tree. Due to resin’s superior mechanical and rheological properties,resin was evaluated as a well suspension material to create a suspension barrier. Resin plug was deployed successfully from a dive support vessel (DSV) across the perforations to allow the tree removal at cost effective manner. Resin plugging demonstrates a new approach at well P&A area.展开更多
文摘在浮式生产储油卸油装置(Floating Production Storage and Offloading,FPSO)不停产且3条拖船限位的状态下,简要分析FPSO受到的水流力作用,选择合适的限位方案进行旧上锚缆的拆除弃置和新上锚缆的安装,完成单点系泊上锚缆的整体更换,详述该方案在项目施工中的应用。该技术可实现FPSO不停产整体更换单点系泊上锚缆,避免FPSO单点系泊更换上锚缆造成油田停产。
文摘A subsea wellhead equipped with obsolete vertical Christmas tree needs to be suspended for subsea tree recovery and subsequently to be permanently abandoned. Due to obsolete Christmas tree design combined with tubing inaccessibility issue,conventional subsea intervention method for setting downhole mechanical plug barriers with a semisubmersible rig or a riserless light well intervention vessel is not feasible to suspend the well. Attempt was made to suspend the well from a riserless light well intervention vessel by setting tubing mechanical plugs in 2017,but the mandrel of the tree running tool (TRT) was sheared off accidently while landing the TRT&subsea intervention lubricator (SIL) on the subsea tree. Due to resin’s superior mechanical and rheological properties,resin was evaluated as a well suspension material to create a suspension barrier. Resin plug was deployed successfully from a dive support vessel (DSV) across the perforations to allow the tree removal at cost effective manner. Resin plugging demonstrates a new approach at well P&A area.
