Title:
石油産業で使用される自己締結式のねじ切りを設けた管状接続構造
Document Type and Number:
Japanese Patent JP5522697
Kind Code:
B2
Abstract:
A threaded connection includes first and second tubular components, each including a respective male and female end. The male and female ends each include at least one threaded zone and finish in a terminal surface. The male threaded zone includes a first portion in which a width of teeth, CWTp, increases from a value CWTpmin corresponding to a width of a tooth closest to the terminal surface of the male end to a value CWTpmax corresponding to a width of a tooth furthest from the terminal surface. A width of teeth CWTb of the female threaded zone decreases from a value CWTbmax corresponding to a width of a tooth furthest from the terminal surface of the female end to a value CWTbmin corresponding to a width of a tooth closest to the terminal surface. The threaded zones cooperate in accordance with a self-locking make-up, with CWTpmin/CWTbmax≥0.2 and CWTbmin/CWTpmax≤CWTpmin/CWTbmax.
Inventors:
Martin Pierre
Verger Eric
Verger Eric
Application Number:
JP2011541158A
Publication Date:
June 18, 2014
Filing Date:
December 07, 2009
Export Citation:
Assignee:
Vallec Oil and Gas France
Nippon Steel & Sumitomo Metal Corporation
Nippon Steel & Sumitomo Metal Corporation
International Classes:
E21B17/042
Domestic Patent References:
| JP9507100A | ||||
| JP58157087U |
Attorney, Agent or Firm:
Yamato Tsutsui
Yoshitaka Kozuka
Akiko Tsutsui
Yoshitaka Kozuka
Akiko Tsutsui