Vallourec Oil and Gas France

Nippon Steel Corporation

Steve Langford

Pierre Bernard Martin

Wesley Ott

A lifting plug for connection with a tubular member, the lifting plug including a tubular body including an externally threaded portion; one or more apertures extending through the tubular body within the externally threaded portion; and a flange at a first end of the tubular body for engagement with a lifting device.

Lifting plug

A lifting plug for connection with a tubular member, the lifting plug including a body having an externally threaded portion, a flange at a first end of the body for engagement with a lifting device, and a grease collection groove interrupting at least a part of the externally threaded portion, the grease collection groove collecting and removing excess grease from the threaded portion during use.

A threaded connection partially in a self-locking arrangement includes a first and a second tubular component provided respectively with male and female threaded zone at their respective ends. Only a portion of a first portion with varying thread width of the male threaded zone cooperates by self-locking tightening with only a portion of the second portion with varying thread width of the female threaded zone when made up one into the other. The connection is able to withstand high torques required for special applications such as drilling with casing or intermediate casing.

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Meudon, France

Steve Langford