Vault Pressure Control LLC

Jason Meyer Armistead

Khang Van Nguyen

Christopher Cole Humphrey

Knox Wright

A casing system includes a landing ring and a mandrel hanger. The landing ring defines an opening extending between a first end portion and a second end portion. The first end portion is configured to couple to a conductor pipe. The landing ring includes a landing ring shoulder extending radially inward from an inner surface of the opening. The mandrel hanger has an outer surface configured to engage a load ring and an engagement ring. The load ring also abuts the engagement ring and engages the landing ring shoulder.

Wellhead attachment system

A casing rotation system permits rotation of a casing string through a telescoping ring that selectively engages a casing hanger. When the telescoping ring is in a first axial position, it engages the casing hanger such that rotational force is transmitted from a running tool to the casing string. When the telescoping ring moves to a second axial position, it disengages the casing hanger such that rotational force is no longer transmitted to the casing string. The casing rotation system may include an inward-biased locking ring disposed about the casing hanger and optionally a bearing surface that reduces friction on the hangar.

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Houston, TX, United States of America

Jason Meyer Armistead