Quick latching drill pipe blowout preventer and method of use th

Details Quick latching drill pipe blowout preventer and method of use th Quick latching drill pipe blowout preventer and method of use th

1975-09-02

1976-05-25

Novosad, Stephen J.

Wells

Valves, closures or changeable restrictors

166 75R, 166 86, E21B 1900, E21B 4300

Patent

active

039586421

ABSTRACT:
A blowout preventer for the drill string of a subterranean well which is quickly and sealingly latchable to the upper tool joint of the string in the event of a well blowout. The blowout preventer basically comprises first and second tubular housing members, means defining a valve within one of said tubular housing members, means carried by one of said housing members for grasping a well tool joint, seal elements carried by said housing member for cooperation with said means defining a valve for containment of fluid within said apparatus, and means for selectively removing one of said housing members from the other of said housing members. A method of containing well and drilling fluids using the blowout preventer also is disclosed.

REFERENCES:
patent: 2410589 (1946-11-01), Segelhorst
patent: 2897895 (1959-08-01), Ortloff
patent: 3282336 (1966-11-01), Wakefield, Jr.
patent: 3323773 (1967-06-01), Walker

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