公开(公告)号：WO2015134830A1

公开(公告)日：2015-09-11

申请号：PCT/US2015/019092

申请日：2015-03-06

Applicant: WEATHERFORD/LAMB, INC.

Inventor： GASPARD, Gregory Gerard ,  FARLEY, Douglas Brian

IPC: E21B33/16

CPC classification number: E21B33/143 ,  E21B17/00 ,  E21B33/12 ,  E21B33/16 ,  E21B34/06

Abstract: A method for casing a subsea wellbore includes running a tieback casing string into the subsea wellbore using a workstring including first, second, and third wiper plugs. The method further includes: launching a first release plug or tag into the workstring; pumping cement slurry into the workstring, thereby driving the first release plug or tag along the workstring; after pumping the cement slurry, launching a second release plug or tag into the workstring; and pumping chaser fluid into the workstring, thereby driving the release plugs or tags and cement slurry through the workstring. The release plugs or tags engage and release the respective wiper plugs from the workstring. The first wiper plug or release plug ruptures, thereby allowing the cement slurry to flow therethrough. The method further includes: stabbing the tieback casing string into a liner string; and retrieving the workstring, the workstring still including the third wiper plug.

Abstract translation: 用于套管海底井筒的方法包括使用包括第一，第二和第三刮水器塞的工作系统来运行连接套管柱进入海底井筒。 该方法还包括：将第一释放塞或标签发射到工作绳中; 将水泥浆泵送到工作绳中，从而沿着工作绳驱动第一释放塞或标签; 在泵送水泥浆后，将第二个释放塞或标签推入工作绳; 并将追击流体泵送到工作绳中，从而通过工作绳驱动释放塞或标签和水泥浆。 释放塞子或标签使相应的雨刷塞从工作绳上接合和释放。 第一个雨刷塞或释放塞破裂，从而使水泥泥浆流过。 该方法还包括：将连接套管柱刺入衬管柱中; 并检索工作串，工作台仍然包括第三个雨刷。