Tension leg platform anchoring method and apparatus
This patent describes a tension leg platform anchor apparatus adapted to be positioned on a marine bottom of a body of water, to secure a tension leg platform to the marine bottom. The tension leg platform has a buoyant hull adapted to float in the body of water and tension legs depending vertically downward from the buoyant hull a common distance, each tension leg formed from flexible tethers. The tension leg platform anchor apparatus comprises: anchor means securable to the marine bottom by anchor piles, a tether base operatively connectable when positioned adjacent the tension leg platform to the lower ends of the flexible tethers forming the tension legs, the tether base operatively connectable to the anchor means, and connection means comprising a first and a second portion, the first portion carriable by the tether base, the second portion carriable by the anchor means, to connect the tether base to the anchor means.
- Assignee:
- Shell Oil Co., Houston, TX
- Patent Number(s):
- US 4620820
- OSTI ID:
- 7005134
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
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42 ENGINEERING
420206 -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
423000 -- Engineering-- Marine Engineering-- (1980-)
ANCHORS
MOORINGS
NATURAL GAS WELLS
OFFSHORE PLATFORMS
OIL WELLS
POSITIONING
SEA BED
WELLS