公开(公告)号：WO2019210021A1

公开(公告)日：2019-10-31

申请号：PCT/US2019/029047

申请日：2019-04-23

Applicant: HYDRIL COMPANY

Inventor： BREEN, Jonathan Robert ,  MUTIS RUEDA, David ,  TATE, Andrew Henry

IPC: E21B17/042

Abstract: A tubular connection includes a first joint of casing having an integral box end with an internal female wedge threaded zone having wedge threads disposed on a portion of the integral box end, and a second joint of casing having an integral pin end with an external male wedge threaded zone having wedge threads disposed on a portion of the integral pin end. The external male wedge threads engage with the internal female wedge threads. The second joint of casing has an internal diameter D1, and also includes an internal annular recess with an internal diameter D2. D2 is greater than D1, and the annular recess is disposed longitudinally along an inner surface of the second joint of casing. The annular recess is positioned radially adjacent to a portion of the external male threads disposed on a lower portion of the pin end.

公开(公告)号：WO2019210021A8

公开(公告)日：2019-10-31

申请号：PCT/US2019/029047

申请日：2019-04-25

Applicant: HYDRIL COMPANY

Inventor： BREEN, Jonathan Robert ,  MUTIS RUEDA, David ,  TATE, Andrew Henry

IPC: E21B17/042

Abstract: A tubular connection includes a first joint of casing having an integral box end with an internal female wedge threaded zone having wedge threads disposed on a portion of the integral box end, and a second joint of casing having an integral pin end with an external male wedge threaded zone having wedge threads disposed on a portion of the integral pin end. The external male wedge threads engage with the internal female wedge threads. The second joint of casing has an internal diameter D1, and also includes an internal annular recess with an internal diameter D2. D2 is greater than D1, and the annular recess is disposed longitudinally along an inner surface of the second joint of casing. The annular recess is positioned radially adjacent to a portion of the external male threads disposed on a lower portion of the pin end.