Wells – Expansible anchor or casing – Liner hanger
Patent
1993-04-01
1994-07-12
Dang, Hoang C.
Wells
Expansible anchor or casing
Liner hanger
166182, 166217, 285141, E21B 3304
Patent
active
053279654
ABSTRACT:
A well completion system utilizes a seal which carries its own load ring. The seal is lowered into the bore of a wellhead housing around a tubular member. The seal carries a split load ring, which once positioned will move outward into engagement with a groove formed in the wellhead housing. A locking assembly will lock the seal to the wellhead housing. The locking assembly has a casing lock ring which will secure to the upper end of a section of casing, if the casing has been cut due to an emergency stuck condition. A tubing hanger lands over the locking assembly. The tubing hanger is retained by an actuating ring and lock ring that are independent of the tubing hanger seal.
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Brammer Norman
Eckert Lawrence A.
Fritshe Casimir J.
Marietta Dale B.
Sharp Allan C.
ABB Vetco Gray Inc.
Bradley James E.
Dang Hoang C.
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