| 摘要 |
A coupling system 10 is provided between tubular members 12, 14 such as tubing, pipes, casing and liners for location in a well bore in which the ends of each tubular member have cooperating profiled sections 62, 80. The profiled sections 62, 80 are arranged coaxially and a radially applied force is applied to form a metal to metal sealed connection. At least one profiled section 62, 80 includes a projection, the projection containing an overhang 77, 81 at the surface of the tubular member. The overhang locks with the opposing profile when the force is applied to provide a coupling with increased burst and collapse rating. Embodiments are provided of arrangements of overhangs such as oppositely directed overhangs and interlocking overhangs. |
