Offshore platform with removable modules
This patent describes a permanently fixed offshore platform apparatus from which at least one well is drilled. The apparatus comprises: a jacket having legs anchored to and upwardly extending from the ocean floor to above the water surface; a substructure having legs positioned on the jacket and fixedly secured thereto; bracing means connected between and to the legs of the substructure to fixedly position and space at least the upper ends of the legs in a predetermined arrangement; first landing surface means carried by the upper ends of the substructure legs; modular deck means provided with second landing surface means on the bottom thereof for engaging the first landing surface means of the substructure.
- Assignee:
- Shell Offshore Inc., Houston, TX
- Patent Number(s):
- US 4666340
- OSTI ID:
- 6533367
- Country of Publication:
- United States
- Language:
- English
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42 ENGINEERING
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ALIGNMENT
DESIGN
DRILLING RIGS
FASTENERS
JACKETS
MOORINGS
NATURAL GAS WELLS
OFFSHORE PLATFORMS
OIL WELLS
OPERATION
ORIENTATION
WELLHEADS
WELLS