THREADED CONNECTION

WIPO Patent Application WO/2011/060894

A3

A threaded connection 1 comprising a first and a second tubular component, the first component comprising a male end comprising a distal surface and a threaded zone 5 disposed on its external peripheral surface, the second component comprising a female end comprising a distal surface and a threaded zone 4 disposed on its internal peripheral surface, the threaded zone 5 of the male end being threaded up into the threaded zone 4 of the female end, the threaded zones 4, 5 comprising respective male and female threads 40, 50 having a width which increases from the distal surface, the threads comprising load flanks having negative angles over at least a portion of their radial dimension, and stabbing flanks, with a radial clearance subsisting in the connected state between the crests of the male threads and the roots of the female threads and/or between the crests of the female threads and the roots of the male threads, with an axial clearance subsisting in the connected state between the stabbing flanks of the male and female threads, and the distal surface of the male end and/or female end being brought into axial abutting contact against a corresponding abutment surface.

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MARTIN PIERRE (FR)
MAILLON BERTRAND (FR)

PCT/EP2010/006823

November 10, 2011

November 09, 2010

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VALLOUREC MANNESMANN OIL & GAS (FR)
SUMITOMO METAL IND (JP)
MARTIN PIERRE (FR)
MAILLON BERTRAND (FR)

F16L15/06

US20060145480A1	2006-07-06
US6155613A	2000-12-05

DE KERNIER, Gabriel (36 Avenue Hoche, Paris, FR)

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