Nippon Steel Corporation

Vallourec Oil and Gas France

Thimothé Delbosco

Wesley Ott

Scott Granger

A threaded connection comprising: a first tubular component () having a first male threaded portion () and a second male threaded portion (), a root width in the first male threaded portion () decreasing in a direction oriented a first pipe body (), the root width being constant in the second male threaded portion (), the second tubular component () comprising a female threaded zone () having a first female threaded portion () with a root width decreasing in a direction oriented towards a second pipe body (), the connection being partially made up in a self-locking arrangement in order to provide a locking region () and a non-locking region (), a female distal thread () of the locking region () has a width such that FDTW/TH>=125%, in which FDTW is a tooth width of the female distal thread () of the locking region and TH is the tooth height of said female distal thread ().

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Meudon, France

Thimothé Delbosco