Title:
ASSEMBLY FOR PRODUCING A THREADED CONNECTION FOR DRILLING AND OPERATING HYDROCARBON WELLS, AND RESULTING THREADED CONNECTION
Document Type and Number:
WIPO Patent Application WO/2014/187873
Kind Code:
A3
Abstract:
An assembly for producing a threaded connection, comprising a first and a second tubular component with an axis of revolution (10) and each respectively provided at one of their ends (1, 2) with at least a first (31, 41), a second (3 2, 42), and a third (33, 43) continuous threaded zone provided in succession on the same helix, and being capable of cooperating together upon makeup, at least one of the first or second or third threaded zones having a variable width thread profile, and being self-locking, said ends (1, 2) respectively finishing in a free terminal surface (7, 8), each of the ends (1, 2) being free of a specific abutment surface, at least one sealing surface (51, 52) being provided between each of the adjacent threaded zones in order to cooperate in a sealed interference fit with a sealing surface (61, 62) provided on the corresponding end when the connection is in the made up state.
Inventors:
MARTIN PIERRE BERNARD (FR)
COLIN SÉBASTIEN (FR)
MENCAGLIA XAVIER (FR)
RUFFIN KARINE (FR)
COLIN SÉBASTIEN (FR)
MENCAGLIA XAVIER (FR)
RUFFIN KARINE (FR)
Application Number:
PCT/EP2014/060472
Publication Date:
January 29, 2015
Filing Date:
May 21, 2014
Export Citation:
Assignee:
VALLOUREC OIL & GAS FRANCE (FR)
NIPPON STEEL & SUMITOMO METAL CORP (JP)
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
E21B17/042
Foreign References:
| US20090058085A1 | 2009-03-05 | |||
| US4384737A | 1983-05-24 | |||
| US20120074690A1 | 2012-03-29 | |||
| US20040084901A1 | 2004-05-06 |
Attorney, Agent or Firm:
CABINET NETTER (Paris, FR)
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