Drilling media injection for rotating blowout preventors

Patent · Tue Jul 16 00:00:00 EDT 1985

OSTI ID:5944807

Biffle, M S

Improvements in the operation of a rotating blowout preventor. The rotating head assembly of a rotating blowout preventor includes a stripper rubber which has an upper annular member attached to the lower annular end of a metal support member. The support member extends upwardly into fixed relationship respective to part of the rotating head. The stripper rubber is in the form of an annular body which has an axial passageway formed therethrough for telescopingly receiving a rotating member in sealed relationship therewith. The outer circumferentially extending lower wall surface of the rubber rotatably engages the lower marginal inside wall surface of a fixed washpipe. The present invention provides a positive pressure of drilling media, or drilling media admixed with lubricant, at the interface formed between the outer rubber surface and the inner surface of the washpipe. In another form of the invention, the drilling media flows into the bearing chamber of the rotating head and then into the interface between the rubber and washpipe, so that debris cannot enter either part of the RBOP.

• Assignee: IFI; EDB-86-085090
• Patent Number(s): US 4529210
• OSTI ID: 5944807
• Resource Relation: Patent File Date: Filed date 1 Apr 1983; Other Information: PAT-APPL-481328
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
BLOWOUT PREVENTERS
OPERATION
DRILLING FLUIDS
COMPRESSIBLE FLOW
FOULING
HYDRAULICS
INTERFACES
LUBRICANTS
PARTICULATES
ROTATION
RUBBERS
SEALS
SUPPORTS
ELASTOMERS
FLUID FLOW
FLUID MECHANICS
FLUIDS
MECHANICAL STRUCTURES
MECHANICS
MOTION
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PARTICLES
POLYMERS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing