Well pressure test plug

Details Well pressure test plug Well pressure test plug

1977-08-22

1978-10-24

Purser, Ernest R.

Wells

Packers or plugs

With expanding anchor

166123, 166183, E21B 3303

Patent

active

041216601

ABSTRACT:
A test plug for use in pressure testing a Christmas tree and blowout preventer atop an oil or gas wellhead. The test plug includes a cylindrical body having an outer diameter slightly smaller than the bore of the wellhead, and a plurality of support dogs that fit into an annular groove in the wellhead to support the plug during pressure testing. The plug is landed on a relatively narrow shoulder in the bore of the wellhead and the dogs are then extended into the groove by vertical movement of a mandrel, thereby lifting the plug off the shoulder and securely supporting it in test position.

REFERENCES:
patent: 3250331 (1966-05-01), Boyle
patent: 3633670 (1972-01-01), Brown
patent: 3897824 (1975-08-01), Fisher
patent: 4007783 (1977-02-01), Amancharla et al.
patent: 4018276 (1977-04-01), Bode

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