Blow-out preventer

Details Blow-out preventer Blow-out preventer

1998-05-01

2000-02-15

Schoeppel, Roger

Wells

Submerged well

With safety or emergency shutoff

166 821, 166 843, 166 844, 166 854, 166 862, E21B 3306

Patent

active

060241721

ABSTRACT:
The invention provides a versatile blow-out preventer having a hydraulically activated bladder and a mechanically operated set of rams mounted in a single body, occupying a minimum of vertical space, and being adapted to operate whether or not there is equipment such as pump rods or cables in the well head.

REFERENCES:
patent: Re16607 (1927-05-01), Crowell
patent: 778591 (1904-12-01), Layne
patent: 3939910 (1976-02-01), Bruce
patent: 4307783 (1981-12-01), Lanmon
patent: 4325409 (1982-04-01), Roberts
patent: 4531580 (1985-07-01), Jones
patent: 5074518 (1991-12-01), Berry

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