Drill pipe tester valve

Details Drill pipe tester valve Drill pipe tester valve

1980-04-03

1982-03-16

Pate, III, William F.

Wells

Processes

With indicating, testing, measuring or locating

166324, 166332, E21B 3408

Patent

active

043196349

ABSTRACT:
A drill pipe tester valve includes a spherical valve member supported from an upward facing surface of a housing so that downward forces exerted on the valve member in its closed position, due to fluid pressure in a string of pipe above the valve member, are transmitted substantially entirely to said housing.

REFERENCES:
patent: 3347318 (1967-10-01), Barrington
patent: 3509913 (1970-05-01), Lewis
patent: 3667505 (1972-06-01), Radig
patent: 4042033 (1977-08-01), Holland et al.
patent: 4197879 (1980-04-01), Young
patent: 4212355 (1980-07-01), Reardon
patent: 4230185 (1980-10-01), Fredd

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