Drilling riser locking apparatus and method

Patent · Tue Dec 10 04:00:00 EST 1985

OSTI ID:5911271

Denison, E B; Picard, J M

Method and apparatus for use in drilling a well from a floating vessel by means of a riser, which connects the vessels drilling equipment to a wellhead assembly adjacent the ocean floor. The riser is capable of being disconnected from the wellhead assembly, and having its upper end locked to the vessel. The present riser locking apparatus is made up of selectively-positionable resiliently-moveable locking beams adapted to be remotely actuated to lock the upper elements of the riser to the vessel, thereby preventing lateral or vertical movement of the riser relative to the vessel.

• Assignee: Shell Offshore Inc.
• Patent Number(s): US 4557332
• OSTI ID: 5911271
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
DESIGN
DRILLING
DRILLING EQUIPMENT
EQUIPMENT
EXPLORATORY WELLS
HYDRAULIC EQUIPMENT
MARINE RISERS
OFFSHORE DRILLING
OFFSHORE PLATFORMS
OPERATION
PIPES
RESTRAINTS
SHIPS
STRUCTURAL BEAMS
WELL DRILLING
WELLS