Vetco Gray Inc.

Mark Q Henneke

Herman O Henderson, Jr

A device for retaining tubular inner and outer members together in a well allows the members to be pulled apart with a sufficient shear out force. The members have mating retaining and reaction groooves. The retaining groove has a deeper portion joining a shallower portion which is bounded by a shearing side wall. The reaction groove has a shearing side wall which opposes the shearing side wall of the retaining groove when the inner and outer members are fully inserted together. A solid elastomeric ring is carried within the retaining groove. The ring locates in the deeper portion when the inner and outer members are being pushed together. When a pulling apart force is applied, the shallower portion slides relative to the ring until the ring locates in the shallower portion and is contacted by the opposed shearing side walls. The protrusion of the ring from the shallower portion into the reaction groove is sufficient to prevent the inner and outer members from being pulled apart from each other unless sufficient pulling force is applied to cause the ring to shear.

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Houston, TX, United States of America

Mark Q Henneke