Wellhead drilling and completion apparatus

Details Wellhead drilling and completion apparatus Wellhead drilling and completion apparatus

E - Fixed Constructions

21

B

166/51.3

E21B 33/035 (2006.01) E21B 23/00 (2006.01) E21B 23/12 (2006.01) E21B 33/038 (2006.01) E21B 33/043 (2006.01) E21B 43/01 (2006.01) E21B 43/017 (2006.01)

Patent

CA 1271704

-25- WELL DRILLING AND COMPLETION APPARATUS ABSTRACT OF THE DISCLOSURE A drilling template for multiple wells has a dummy post on the template associate with each wellhead position and a wellhead connector is transferable between the dummy post and wellhead during completion and workover opera- tions. 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 head 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.

530408

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