Wells – Submerged well – Connection or disconnection of submerged members remotely...
Patent
1994-08-23
1995-09-19
Dang, Hoang C.
Wells
Submerged well
Connection or disconnection of submerged members remotely...
166123, 166208, 166382, 166387, E21B 33043
Patent
active
054509050
ABSTRACT:
A method of installing a wellhead component such as a tubing hanger or tree cap utilizes hydraulic pressure to move the component downward. A blowout preventer is connected to the production tree. The component has a primary metal seal and an elastomeric installation seal. The component is lowered on drill pipe through the blowout preventer into the tree bore with the installation seal sealingly engaging the bore. The primary seal is in a run-in position prior to setting. The operator closes the blowout preventer and pumps liquid through a kill line into the annular chamber below the blowout preventer. This causes the component to move downward, deforming the primary seal into the sealing engagement with the bore and the component.
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patent: 5044442 (1991-09-01), Nobileau
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patent: 5372201 (1994-12-01), Milberger
Brammer Norman
Gariepy James
ABB Vetco Gray Inc.
Bradley James E.
Dang Hoang C.
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