Wells – Above ground apparatus – Inner member anchor or seal with lateral port
Patent
1995-06-06
1996-09-17
Schoeppel, Roger J.
Wells
Above ground apparatus
Inner member anchor or seal with lateral port
166 884, 166368, 166375, 166382, 2851332, 2851372, E21B 3410
Patent
active
055559352
ABSTRACT:
An annular wellhead member has an inner mating surface. The wellhead member has a auxiliary fluid passage with an inboard opening at the inner mating surface. A tubing hanger is landed concentrically within the wellhead member. The tubing hanger has an outer mating surface which mates with the inner mating surface of the wellhead member. A production fluid passage through the tubing hanger places the production tubing string in communication with a production line. A hydraulic line extends from a hydraulically operated downhole safety valve to the tubing hanger. A tubing hanger auxiliary fluid passage has a first opening and an outboard opening. The first opening is connected to the hydraulic line. The outboard opening is located on the outer mating surface of the tubing hanger and registers with the inboard opening of the wellhead member auxiliary fluid passage. The wellhead member auxiliary fluid passage is connected to a hydraulic supply line. An alignment device aligns the outboard opening of the tubing hanger auxiliary fluid passage and the inboard opening of the wellhead member auxiliary fluid passage. A seal ring is concentrically located around the openings. Auxiliary fluid is supplied from the exterior of the wellhead member to the downhole safety valve.
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Brammer Norman
Gariery James A.
McConaughy Brett R.
ABB Vetco Gray Inc.
Schoeppel Roger J.
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