Mudmat design
An apparatus for positioning and levelling an offshore platform jacket on the ocean floor and restraining it against lateral and vertical movement, is described comprising: substantially vertical legs having cross-bracing members, the legs being arranged in a closed pattern and adapted to extend downwardly to the ocean floor when positioned thereon; substantially vertical tubular sleeves fixedly secured to the bottom of the jacket at spaced intervals around the periphery thereof, the sleeves adapted to receive anchoring piles driven through the sleeves for securing the jacket to the ocean floor; holding and anchoring means for securing the piles to the sleeves affixed to and carried at the lower end of the jacket, at least one of the anchoring means being mounted adjacent each corner of the platform; and mudmat footing means affixed to the bottom of the jacket and having a downwardly extending peripheral wall forming at least one chamber therein, the wall being adapted to penetrate the ocean floor.
- Assignee:
- Shell Offshore Inc., Houston, TX
- Patent Number(s):
- US 4720214
- OSTI ID:
- 5287717
- 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
& Processing
42 ENGINEERING
420206 -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
DESIGN
EQUIPMENT
INSTALLATION
MATERIALS HANDLING
MATERIALS HANDLING EQUIPMENT
NATURAL GAS WELLS
OFFSHORE PLATFORMS
OIL WELLS
POSITIONING
RESTRAINTS
SEA BED
SLEEVES
TUBES
WELLS