Marine riser fill-up valve

Patent · Tue Nov 11 00:00:00 EST 1986

OSTI ID:7076628

Roche, J R

This patent describes a marine riser fill-up valve adapted for connection in an offshore riser string through the sea comprising, a cylindrical body having a bore therethrough for communication of drilling fluid through the riser string and having an outwardly facing annular depression formed in a first section of the body and at least one valve port formed in a second section of the body, at least one diaphragm port formed in the wall of the body between the bore and the the annular depression, and a cylindrical member of series-connected coaxial spools including, a cylindrical diaphragm radially deformable between a relaxed state and a deformed state and having first and second ends, a valve spool joined at the second end of the cylindrical diaphragm, and a top ring joined at the first end of the cylindrical diaphragm, the top ring fastened at its first end to the cylindrical body, the cylindrical diaphragm in its relaxed state operably covering the annular depression in the body and the joined valve spool operably covering the valve port of the cylindrical body, the cylindrical diaphragm, in response to greater sea water pressure on its outer side with respect to bore fluid pressure via the diaphragm port on its inner side, moving to a deformed state by constricting radially into the annular depression operably causing the valve spool to uncover the valve port.

• Assignee: Hydril Co., Los Angeles, CA
• Patent Number(s): US 4621655
• OSTI ID: 7076628
• Resource Relation: Patent File Date: Filed date 4 Mar 1985
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
42 ENGINEERING
MARINE RISERS
VALVES
NATURAL GAS WELLS
OIL WELLS
DEFORMATION
DRILL PIPES
DRILLING FLUIDS
PRESSURE EFFECTS
SEAWATER
CONTROL EQUIPMENT
DRILLING EQUIPMENT
EQUIPMENT
FLOW REGULATORS
FLUIDS
HYDROGEN COMPOUNDS
OXYGEN COMPOUNDS
PIPES
WATER
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing
423000 - Engineering- Marine Engineering- (1980-)