Diverter/bop system and method for a bottom supported offshore drilling rig

Patent · Tue Jul 01 04:00:00 EDT 1986

OSTI ID:5513502

Roche, J R; Alexander, G G; Carbaugh, W L

A system is described adapted for alternative use as a diverter or a blowout preventer for a bottom supported drilling rig and adapted for connection to a permanent housing attached to rig structural members beneath a drilling rig rotary table, the permanent housing having an outlet connectable to a rig fluid system flow line. The system consists of: a fluid flow controller having a controller housing with a lower cylindrical opening and an upper cylindrical opening and a vertical path therebetween and a first outlet passage and a second outlet passage provided in its wall, a packing element disposed within the controller housing, and annular piston means adapted for moving from a first position to a second position, whereby in the first position the piston means wall prevents interior fluid from communicating with the outlet passages in the controller housing wall and in the second position the piston means wall allows fluid communication of interior fluid with the outlet passages and urges the annular packing element to close about an object extending through the bore of the controller housing or to close the vertical flow path through through the controller housing in the absence of any object in the vertical flow path, means for connecting a vent line to the outlet passage provided in the controller housing wall, a lower telescoping spool having a lower joining means at its lower end for joining alternatively to structural casing or to a mandrel connected to a conductor string cemented within the structural casing and an upper connection means at its upper end for connection to the lower cylindrical opening of the fluid flow controller, and an upper telescoping spool having a lower connection means for connection to the upper cylindrical opening of the fluid flow controller.

• Assignee: Hydril Co., Los Angeles, CA
• Patent Number(s): US 4597447
• OSTI ID: 5513502
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
42 ENGINEERING
420206 -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
423000 -- Engineering-- Marine Engineering-- (1980-)
ALIGNMENT
BLOWOUT PREVENTERS
CEMENTING
CONTROL EQUIPMENT
DRILL PIPES
DRILLING EQUIPMENT
DRILLING RIGS
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
HOISTING
INSTALLATION
MATERIALS HANDLING
MECHANICAL STRUCTURES
NATURAL GAS WELLS
OFFSHORE PLATFORMS
OIL WELLS
PACKINGS
PIPES
PISTONS
POSITIONING
SUPPORTS
VALVES
WELL CASINGS
WELLS