| 摘要 |
An improved method of and apparatus for repairing a subsea pipeline which includes the steps of positioning a forming tool (T) having an actuator (M) connected thereto, a collet connector (C) and annular connecting means (S) mounted on a frame and engaged by said collet connector in alignment with the prepared end of the pipeline (P) which is to be formed into the annular connecting means, extending the forming portion of the tool (T) into the end of the pipeline (P), expanding the forming tool (T) within the pipeline end, retracting the forming tool (T) to pull the annular connecting means (S) into position surrounding the end of the pipeline, cleaning the interior profile of the annular connecting means, forming the pipeline end outwardly into tight gripping and sealing engagement with the interior profile of the annular connecting means, testing the joint hydrostatically and axially, extending the forming tool to move the collet connector and actuator away from the end of the pipeline, releasing the forming tool from its engagement within the pipeline end, and retracting the forming tool from within the end of the pipeline end. The improved apparatus includes a forming tool (T) having a body (10), a resilient sleeve (12) surrounding the body, means for delivering fluid under pressure through the body to the interior of the resilient sleeve, an arm (A) connected to the body of the forming tool and connected to a pressure responsive actuator (M) to extend and retract the forming tool, a collet connector (C) supported from said forming tool, a forming sleeve (S), a frame having means for supporting itself on the sea bottom, means for mounting the forming sleeve on the frame, said collet connector (C) being initially connected to said forming sleeve, means for controlling the supply of fluid under pressure to opposite sides of said actuator, means for injecting a fluid from said body into the space within said annular connecting means, and means on said frame for connecting lines thereto. |
