Ram blowout preventer apparatus

Patent · Tue Mar 03 04:00:00 EST 1987

OSTI ID:6759584

Crutchfield, M K

A ram blowout preventer is described comprising, a body, a vertical bore through the body adapted for the passage of tubing or other objects, a horizontal bore through the body intersecting the vertical bore through the body, two ram assemblies disposed in the horizontal bore in opposite sides of the body. The ram assemblies are adapted for controlled lateral movement to and from the vertical bore, each ram assembly having a ram member with a front face with a lateral slot, the upper surface of each ram member having a slot disposed therein, a packer disposed in the lateral slot of each ram member, an elastomeric sealing member disposed in the slot of the upper surface of each ram member. Each sealing member has a top surface adapted for sealing between the ram member and a horizontal bore surface of the body and has two terminating sealing surfaces adapted for sealing with complementary sealing surfaces of the other ram assembly, each of the ends of the elastomeric sealing members having secured thereto a slidable outer anti-extrusion plate, the horizontal bore through the body having a generally rectangular cross-section with thickened vertical wall sections in the vicinity of the vertical bore. The thickened wall sections cooperate with the sliding outer anti-extrusion plates of the elastomeric sealing member to support the pressure created in the packer and the elastomeric sealing member when the ram assemblies are closed.

• Assignee: Hydril Co., Los Angeles, CA
• Patent Number(s): US 4647002
• OSTI ID: 6759584
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
BLOWOUT PREVENTERS
DESIGN
DIMENSIONS
ELASTOMERS
NATURAL GAS WELLS
OIL WELLS
OPERATION
PACKINGS
POLYMERS
SEALS
SURFACES
THICKNESS
TUBES
WALLS
WELLS