发明名称 JOINT FILETE A FAIBLE COUPLE DE VISSAGE
摘要 A threaded tubular connection includes a first body terminated by an external abutment, and linked to a male threading prolonged by a terminal portion forming an internal abutment surface at its axial end, such that the connection includes a second body defining a bearing surface for the external abutment at one free end, and including an initial portion on its internal surface connecting the bearing surface to a female threading, made up onto the male threading, and terminating in an internal shoulder facing the internal abutment, such that the linking profile between one of the following: the external abutment, the internal abutment, the bearing surface, and/or the internal shoulder, has a profile with a variable diameter in cross section, over a length of the body which is less than the terminal portion or initial portion.
申请公布号 FR2985282(B1) 申请公布日期 2016.07.29
申请号 FR20110004147 申请日期 2011.12.29
申请人 VALLOUREC MANNESMANN OIL & GAS FRANCE 发明人 DAVID DIDIER;CARROIS FABIEN
分类号 E21B17/042;E21B17/08;F16L15/00 主分类号 E21B17/042
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