Unique semi's dominate rig design
Journal Article
·
· World Oil; (United States)
OSTI ID:6637059
As the search for oil and gas continues into deeper and deeper waters, semisubmersibles and dynamically positioned vessels are becoming larger and more sophisticated. Efforts to reduce downtime resulting from foul weather are apparent in some new rigs designed to have improved motion characteristics. New offshore drilling rigs described include l) a buoy-shaped semisubmersible, the Big Bouy 6000 from the Trosvik Group of Norway, 2) a dynamically positioned drillship to be operated by the Dutch firm Neddrill, 3) Parker Drilling Co.'s helicopter-transportable platform rig, rated for 20,000 ft, 4) a dynamically positioned semisubmersible developed by French drilling contractor Forex Neptune, and 5) a reinforced-concrete semisubmersible, the Condrill concept, developed by Norwegian contractor A/S Hoyer-Ellefsen.
- OSTI ID:
- 6637059
- Journal Information:
- World Oil; (United States), Journal Name: World Oil; (United States) Vol. 181; ISSN WOOIA
- Country of Publication:
- United States
- Language:
- English
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