Method and apparatus for positioning an offshore platform jacket

Patent · Tue Sep 01 04:00:00 EDT 1987

OSTI ID:5943573

Oksuzler, Y

A method is described of positioning an offshore platform jacket comprising the steps of: loading and securing the platform jacket onto a tension leg barge; towing the tension leg barge to a predetermined offshore location; laying anchors on the floor of the ocean at the predetermined offshore location; attaching lines between the anchors and the tension leg barge to position and maintain the barge above the predetermined offshore location; partially submerging the tension leg barge by shortening the lines between the anchors and the tension leg barge; completing the submerging of the tension leg barge by flooding the barge with seawater; and releasing the platform jacket from the tension leg barge and towing the jacket off the barge while the barge is submerged.

• Assignee: Mobil Oil Corp., New York, NY
• Patent Number(s): US 4690586
• OSTI ID: 5943573
• 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-)
ANCHORS
BARGES
HYDROGEN COMPOUNDS
JACKETS
MOORINGS
NATURAL GAS WELLS
OFFSHORE PLATFORMS
OIL WELLS
OXYGEN COMPOUNDS
POSITIONING
SEA BED
SEAWATER
WATER
WELLS