公开(公告)号：EP2909420B1

公开(公告)日：2019-01-02

申请号：EP13763265.9

申请日：2013-09-19

申请人： VALLOUREC OIL AND GAS FRANCE ,  Nippon Steel & Sumitomo Metal Corporation

发明人： RUSSELL, Elder ,  MAILLON, Bertrand ,  OKU, Yousuke

IPC分类号： E21B17/042 ,  F16L25/10

公开(公告)号：EP2909420A2

公开(公告)日：2015-08-26

申请号：EP13763265.9

申请日：2013-09-19

申请人： VALLOUREC OIL AND GAS FRANCE ,  Nippon Steel & Sumitomo Metal Corporation

发明人： RUSSELL, Elder ,  MAILLON, Bertrand ,  OKU, Yousuke

IPC分类号： E21B17/042 ,  F16L25/10

CPC分类号： F16L15/002 ,  E21B17/0423 ,  F16L15/06

摘要： A threaded tubular connection includes a first tube and a second tube. The first tube includes a pin member and the second tube includes a box member. A cross-sectional area of a pin critical cross-section is within approximately ±5% of cross-sectional area of a box critical cross-section of the box member. The cross-sectional areas of each of the pin and box critical cross-sections are within approximately ±5% of the sum of the cross-sectional areas of a box intermediate critical cross-section of the box member and a pin intermediate critical cross-section of the pin member. In a made-up state, a first seal surface on the pin engages a second seal surface on the box in a radial direction so as to form an off-center fluid tight seal that extends in an axial direction of the threaded tubular connection.