Well drilling and completion apparatus

Wells – Submerged well – Connection or disconnection of submerged members remotely...

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Details

285 18, E21B 2300

Patent

active

047490454

ABSTRACT:
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 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 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.

REFERENCES:
patent: 3288493 (1966-11-01), Brown
patent: 4619324 (1986-10-01), Couch

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