Sapcer Design and Fabrication for Sakhalin II Project

摘要

Sakhalin Energy Investimat Comany has refurbished and redeployed the Molikapaq, an arctic offshore drilling casion originally designed for use in the Candian Beaufort Sea. The original structure has been deepenced by adding a new pontoon base, named the "Spacer", and converted into a drilling and production unit. It is now placed 1y km off the coast of Sakhalin island as the first production unit in the Russian subarctic. This paper describes the design of the 15,000 tonne Space unit, its fabrication in Russia and the mating of the Spacer to the 35,000 tonne modified Molkpaq structure at a Korean shipyard. The paper also describes the inter-relationships among the participants involved in this fast track project; the challenges of designing for a new fontier area with severe wave, seismic and ice loadings; and the challenges for the Russians and the Owners of building a new type of structure in a yard designed for building submarines.