| 摘要 |
A pipe coupling for a pipe string extending in a subterranean bore hole has a pair of coupling members (1, 51; 201, 251; 401, 451) including thread portions for generating an axial force if the coupling members (1, 51; 201, 251; 401, 451) are mutually twisted in make-up sense. The coupling members (1, 51; 201, 251; 401, 451) also include auxiliary connecting members (16, 66; 216, 266; 416, 466) for connecting auxiliary transport lines (116, 117, 118; 316). Since the coupling members (1, 51; 201, 251; 401, 451) include twist limiting abutments (35, 85; 435, 485) for limiting mutual rotation of the coupling members (1, 51; 201, 251; 401, 451) in the make-up sense beyond a coupled configuration and the auxiliary connecting members (16, 66; 216, 266; 416, 466) communicating in the coupled condition are located exclusively in limited circumferential segments of the coupling members (1, 51; 201, 251; 401, 451), a reliable connection between the connecting members (16, 66; 216, 266; 416, 466) is obtained which occupies only a small cross-section of the coupling. |
