Blowout preventer

Details Blowout preventer Blowout preventer

1984-05-11

1985-07-02

Scott, Samuel

Valves and valve actuation

Blow-out preventers

Radial reciprocating ram

251329, 251366, 251367, F16K 302

Patent

active

045263396

ABSTRACT:
A blowout preventer of the cross ram type has at least a first and second pair of rams which are in the same plane or on the same level. The rams are reciprocable in insertable sleeve-like ram guideways which are replaceable to accommodate different types of rams; for example, a pipe ram or blind ram, or different configurations of rams from different manufacturers. This provides a blowout to preventer which has flexible functions and a low stack height and low weight. A spherical shape also provides lower weight, ease of guideway insertion, and reduction of stress concentrations.

REFERENCES:
patent: 1352423 (1920-09-01), Arbon
patent: 2986367 (1961-05-01), Le Rouax
patent: 3392994 (1968-07-01), Moore
patent: 3554480 (1971-01-01), Rowe
patent: 3955622 (1976-05-01), Jones
patent: 4239263 (1980-12-01), George
"Quadram Enhances Drilling Safety", Charles J. Miller, Offshore Magazine 9/1982, pp. 117-119.

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