Influence Analysis of Large Topside Float-over Operation in Ultra-shallow Sea Water

With the platform becoming the functional and intensive, topside weight also becomes increasing. It will put forward higher requirements for installation ship, especially in shallow water, because Due to the large crane can't enter the oil filed for operation, which has great effect on the topside installation. Based on the new platform of Jinzhou 9-3 adjusted project, the report analyzes the large topside installation mode, elaborates the special design of the jacket and deck supporting unit(DSU), and summarizes the influence analysis of topside float-over installation design and operation in ultra shallow water. Influence analysis of large topside installation in ultra shallow sea waters will put forward new ideas for the marginal oilfield development, and accumulate some experience of the platform design, construction and installation in ultra shallow waters.