Diverter system and blowout preventer

Patent · Tue Oct 15 04:00:00 EDT 1985

OSTI ID:5945099

Roche, T R

A system is disclosed which may alternatively be used as a diverter or as a blowout preventer for a drilling rig. The system comprises a BOP attached above a spool having a hydraulically driven sleeve/piston. An outlet passage in the spool, which may be connected to a vent line, is closed off by the sleeve wall when the spool piston is at rest. Hydraulic ports are connected above and below the BOP annular piston and above and below the spool annular piston. The ports below the BOP piston and above the spool piston are in fluid communication with each other. A hydraulic circuit is provided having two valves between a source and a drain of pressurized hydraulic fluid.

• Assignee: Hydril Co.
• Patent Number(s): US 4546828
• OSTI ID: 5945099
• 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
DRILLING RIGS
DUCTS
FLUID MECHANICS
FLUIDS
HYDRAULIC FLUIDS
HYDRAULICS
MECHANICS
NATURAL GAS WELLS
OIL WELLS
PISTONS
PRESSURIZING
SLEEVES
WELLS
WORKING FLUIDS