Wells – Packers or plugs – With expanding anchor
Patent
1987-05-07
1989-01-10
Kisliuk, Bruce M.
Wells
Packers or plugs
With expanding anchor
166139, 166140, 166217, 1661175, E21B 33128
Patent
active
047966980
ABSTRACT:
A drilling template for multiple wells has a dummy post on the template associated with each wellhead position and a wellhead connector is transferable between the dummy post and wellhead during completion and workover operations. A subsea wellhead is provided with a guide frame on which a dummy post is supported permitting the wellhead connector to be transferred between the dummy post and the wellhead. The wellhead includes a landing nipple and tubing hanger which permit the tubing hanger to tilt relative to the casing head without breaking the seal between the hanger and nipple. The wellhead connector is latched and released from the tubing hanger by reciprocation of a control sleeve and the connector is held in the unlatched position by a releasable lock. The wellhead connector includes a plug having a metal seal held in compression together with a resilient seal.
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patent: 3414056 (1968-12-01), Brown et al.
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patent: 3797864 (1974-03-01), Hynes et al.
patent: 4058162 (1977-11-01), Smith
patent: 4121660 (1978-10-01), Koleilat
patent: 4479539 (1984-10-01), Tamplen et al.
patent: 4651818 (1987-03-01), Johnson et al.
Gay M. H.
Kisliuk Bruce M.
Otis Engineering Corporation
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