Wells – Above ground apparatus – Inner member anchor or seal with lateral port
Patent
1979-02-28
1980-05-13
Novosad, Stephen J.
Wells
Above ground apparatus
Inner member anchor or seal with lateral port
166 97, E21B 3303
Patent
active
042024102
ABSTRACT:
An arrangement for testing a metal seal at a wellhead joint between a tubing head adapter for a tubing hanger. An inner sleeve is installed at the joint and extends within the adapter and within the hanger at a location spaced inwardly of the metal seal to form a pressure chamber therebetween for receiving test fluid. The fluid is delivered through a passage in the adapter to test the seal for leakage from the inside of the joint. Another test chamber is formed between the metal seal and a secondary seal located between flanges of the tubing head and adapter. A second test passage is formed in the adapter to direct test fluid to the second chamber for seal testing purposes.
REFERENCES:
patent: 3155401 (1964-11-01), Musolf
patent: 3353596 (1967-11-01), Brown
patent: 3438654 (1969-04-01), Jackson, Jr. et al.
patent: 3478822 (1969-11-01), Holbert, Jr. et al.
patent: 4071085 (1978-01-01), Grable et al.
Novosad Stephen J.
Riddle Eugene N.
W-K-M Wellhead Systems, Inc.
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