Offshore hydraulics: tough, reliable, and failsafe
The Offshore Comet is a modern offshore drilling rig with a hydraulic-cylinder-actuated jacking (raising and lowering) system. Hydraulic-cylinder jacking provides a safe and efficient method for placing the rig at the desired height above the water and insuring that it can withstand the expected heavy loads imposed by machinery, supplies, and the ocean environment. The drilling rig consists of a steel-hulled barge that is floated to the site and then supported during drilling operations by four steel triangular-cross-section lattice legs. The legs are planted firmly on the ocean bottom by a procedure called preloading. Each leg with its integral footing weighs 657 tons. The barge with its deck load can weigh up to 9200 tons.
- OSTI ID:
- 6672644
- Journal Information:
- Hydraul. Pneum. (Cleveland); (United States), Journal Name: Hydraul. Pneum. (Cleveland); (United States) Vol. 36:8; ISSN HYDPA
- Country of Publication:
- United States
- Language:
- English
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