Weatherford Technology Holdings, LLC

Freudenberg Oil & Gas, LLC

Michael LoGiudice

Brent James Lirette

Paul L Smith

Jeffery Morrison

Marcel Budde

A seal assembly includes an outer member defining a bore and an inner member received in the bore of the outer member and one of the outer member and the inner member defining a shoulder portion. An inner circular cross-section metallic ring member and an outer circular cross-section metallic ring member are disposed between the outer member and inner member and against the shoulder portion. A wedge member engages the inner circular cross-section metallic ring member and the outer circular cross-section metallic ring member for applying an axial force against each of the inner and outer circular cross-section metallic ring members in a direction toward the shoulder portion and for applying a radially outer force against the outer circular cross-section metallic ring member and for applying a radially inner force against the inner circular cross-section metallic ring member.

Metal to metal wedge ring seal

A centralizer having bow springs in a retracted position to facilitate passage through a restriction. After passing through the restriction, the bow springs may be expanded to support a casing. In one embodiment, the bow springs may be expanded using a movable sleeve.

Centralizer

A method of running casing in a dual gradient system includes lowering a casing into a low density fluid region and allowing the low density fluid to enter the casing; releasing a plug into the casing; supplying a high density fluid behind the plug; and lowering the casing into a high density fluid region until target depth is reached.

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Cypress, TX, United States of America

Michael LoGiudice