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SHADS: Mobile Arctic Drilling Platform

by R. E. Steddum, Sonat Offshore Drilling Inc, Houston, TX, USA,
E. E. Hershey, Sonat Offshore Drilling Inc, Houston, TX, USA,
J. C. Bruce, Sonat Offshore Drilling Inc, Houston, TX, USA,



Document Type: Proceeding Paper

Part of: Civil Engineering in the Arctic Offshore

Abstract:

To minimize costs of Beaufort Sea exploration programs, the industry needed a mobile arctic drilling structure that requires little or no site preparation, does not require an active ice defense system, and is suitable for a relatively large range of operating water depths. The Sonat Hybrid Arctic Drilling Structure (SHADS) consists of a bottom-founded, hybrid steel-concrete platform upon which a winterized land drilling rig is placed. The transit draft is approximately 18 feet (5. 5 m), and the unit is designed for operating in water depths ranging from 25 ft (7. 6 m) to 65 ft (20 m). With a prepared berm, the operating water depth can be extended.

Subject Headings: Offshore platforms | Offshore drilling | Offshore structures | Hybrid methods | Wells (oil and gas) | Steel structures | Drilling | Arctic | Beaufort Sea

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