Oilwell tubing tester with trapped valve seal

Details Oilwell tubing tester with trapped valve seal Oilwell tubing tester with trapped valve seal

1977-06-14

1979-01-16

Purser, Ernest R.

Wells

Valves, closures or changeable restrictors

Longitudinally movable operator

251363, E21B 4312

Patent

active

041344553

ABSTRACT:
An oilwell tubing tester for the in-place pressure-testing of oilwell tubing strings for leaks, utilizes a flapper valve, a valve seat, a three-piece sealing mechanism, and a sliding J-mandrel located inside the tester housing in abutting relationship with the flapper valve.

REFERENCES:
patent: 2853265 (1958-09-01), Clark, Jr.
patent: 2874927 (1959-02-01), Conrad
patent: 2912216 (1959-11-01), Conrad
patent: 2952438 (1960-09-01), Conrad et al.
patent: 3016914 (1962-01-01), Keithahn
patent: 3421733 (1969-01-01), Stewart, Jr.
patent: 3526278 (1970-09-01), Scott
patent: 3724501 (1973-04-01), Scott
patent: 3826309 (1974-07-01), Tausch
Technical Manual, Baker Oil Tools, Inc., Index 320, Unit No. 3165, dated 9/15/73.

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