Rotating blowout preventer

Details Rotating blowout preventer Rotating blowout preventer

1996-12-19

1998-12-15

Schoeppel, Roger

Wells

Above ground apparatus

With assembly or disassembly means

166 843, 166 844, E21B 3306

Patent

active

058486437

ABSTRACT:
A rotating blowout preventer is disclosed that provides the rotating spindle assembly with lugs that are moved downwardly through vertical slots in the preventer housing then horizontally into horizontal grooves in the housing to lock the rotating spindle assembly to the housing and that move horizontally out of the horizontal grooves and upwardly through vertical slots to release the rotary spindle assembly from the housing for making a connection or a trip.

REFERENCES:
patent: 3621912 (1971-11-01), Wooddy, Jr. et al.
patent: 3934887 (1976-01-01), Biffle
patent: 3965987 (1976-06-01), Biffle
patent: 4500094 (1985-02-01), Biffle
patent: 4531580 (1985-07-01), Jones
patent: 4754820 (1988-07-01), Watts et al.
patent: 4828024 (1989-05-01), Roche
patent: 5178215 (1993-01-01), Yenulis et al.
patent: 5224557 (1993-07-01), Yenulis et al.
patent: 5277249 (1994-01-01), Yenulis et al.
patent: 5279365 (1994-01-01), Yenulis et al.
Article "RBOP.TM. Oil Tools International, Inc. 1500 psi Rotating Blowout Preventer" 2 pgs., from Big D Rental & Sales (1981) Ltd.
Article "NL Shaffer Pressure Control", p. 4732 from NL Industries, Inc. (undated).

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