Rotating blowout preventer apparatus

Details Rotating blowout preventer apparatus Rotating blowout preventer apparatus

1977-02-28

1978-07-04

Leppink, James A.

Wells

Valves, closures or changeable restrictors

175195, 251 1B, 277 31, E21B 4300, E21B 3306

Patent

active

040983412

ABSTRACT:
Rotary blowout preventer apparatus includes:
(a) an upright tubular body adapted to receive an annular packer to be constricted about a rotating well element,
(b) and a rotary annular assembly carried in the body to rotate relative thereto and with the packer when the packer is constricted about said rotating element, said assembly including an actuator movable in the body to effect said constriction of the packer,
(c) said assembly also including an annular head member having a shoulder located to receive vertical thrust exerted by the packer when the actuator effects constriction thereof.

REFERENCES:
patent: 2222082 (1940-11-01), Leman et al.
patent: 3533468 (1970-10-01), Lewis
patent: 3561723 (1971-02-01), Cugini
patent: 3589667 (1971-06-01), Lewis
patent: 3741295 (1973-06-01), Murman et al.

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