Wells – Valves – closures or changeable restrictors – Fluid operated
Patent
1997-09-11
1999-08-31
Schoeppel, Roger
Wells
Valves, closures or changeable restrictors
Fluid operated
251 13, 251214, E21B 3306
Patent
active
059441100
ABSTRACT:
A variable bore ram packer designed for use in a standard ram-type blowout preventer used in oil and gas drilling operations is disclosed. The variable bore ram packer includes top and bottom second plates having a central semi-circular opening which is sized to fit closely about the largest diameter pipe the variable bore ram packer will seal against. Anti-extrusion plates having a smaller central arcuate opening sized to fit closely the smallest diameter pipe the variable bore ram packer will seal are attached to the underside of the top plate by guide screws. The guide screws extend through slots in the top plates which control the motion of the guide screws and hence the anti-extrusion plates as the anti-extrusion plates move and seat against different diameter tubular members. A packer member of elastomeric material having a central semi-circular opening sized to fit closely the smallest diameter pipe the variable bore ram packer will seal is molded between the top plate and anti-extrusion plates and lower plate to form a unitary structure. A radially disposed cavity is molded in the packer adjacent the anti-extrusion plates to minimize damage to the packer as it moves radially and seals against different diameter tubular members.
REFERENCES:
patent: 3915424 (1975-10-01), LeRouax
patent: 3915425 (1975-10-01), LeRouax
patent: 3915426 (1975-10-01), LeRouax
patent: 4229012 (1980-10-01), Williams, III
patent: 4265424 (1981-05-01), Jones
patent: 4332367 (1982-06-01), Nelson
patent: 4444404 (1984-04-01), Parks, Jr.
patent: 4456215 (1984-06-01), Bishop et al.
patent: 4461448 (1984-07-01), Huey et al.
patent: 4518144 (1985-05-01), Vicic et al.
patent: 4550895 (1985-11-01), Shaffer
patent: 4553730 (1985-11-01), Vicic
patent: 4647002 (1987-03-01), Crutchfield
patent: 5005802 (1991-04-01), McWhorter et al.
patent: 5127623 (1992-07-01), McDugle
patent: 5251870 (1993-10-01), Ward
patent: 5294088 (1994-03-01), McWhorter et al.
patent: 5333832 (1994-08-01), Bartholomew et al.
patent: 5405467 (1995-04-01), Young et al.
Griffin Theodore F.
Watts Gerald D.
Cooper Cameron Corporation
Duke Jackie Lee
Schoeppel Roger
LandOfFree
Variable bore ram packer for a ram type blowout preventer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Variable bore ram packer for a ram type blowout preventer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable bore ram packer for a ram type blowout preventer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2423661