公开(公告)号：US20200370387A1

公开(公告)日：2020-11-26

申请号：US16923429

申请日：2020-07-08

Applicant: CHINA UNIVERSITY OF PETROLEUM-BEIJING

Inventor： Yanbin WANG ,  Deli GAO ,  Jun FANG ,  Jing ZENG

IPC: E21B33/043 ,  E21B33/14 ,  E21B34/04 ,  E21B23/01 ,  E21B33/12

Abstract: A casing hanger and annulus sealing device running tool for deepwater drilling and a method for using the same. The running tool includes a spindle connected to a hollow suspension structure via a torque transmission structure, one end of the spindle slidably passes through a hollow piston, the suspension structure rotates with the spindle and slide along the piston, the inner cavity of the torque transmission structure communicates with that of the suspension structure to form a piston cavity; the piston cavity and the piston form a hydraulic piston structure; and one end of the suspension structure away from the torque transmission structure can rotatably hook to and lift upward to release the annulus sealing device, and one end of the piston away from the torque transmission structure can radially expand to hook to the casing hanger and can radially contract to release the casing hanger.