Wells – Processes – Placing or shifting well part
Patent
1993-12-13
1994-12-13
Britts, Ramon S.
Wells
Processes
Placing or shifting well part
166348, 166387, E21B 4301
Patent
active
053722019
ABSTRACT:
A running tool for setting a casing hanger seal in a subsea well utilizes annulus hydraulic pressure. The running tool has a mandrel which carries a body. A setting sleeve is mounted to the mandrel for movement with the mandrel. An energizing ring secures to the setting sleeve and carries the casing hanger seal. A bulk elastomeric seal is carried by the setting sleeve. The bulk seal seals in the bore of the wellhead housing, enabling hydraulic pressure to be applied for driving the setting sleeve downward to set the casing hanger seal. A safety device prevents the bulk seal from sealing against the bore unless the casing hanger seal has already moved to its desired position in the pocket between the casing hanger and the bore of the wellhead housing.
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ABB Vetco Gray Inc.
Bradley James E.
Britts Ramon S.
Tsay Frank S.
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