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Engineering Projects

Semi-submersible drilling platform
Semi-submersible drilling platform

Semi-submersible drilling platform

Project name: semi-submersible drilling platform
Shipyard: Yantai CIMC Raffles Offshore Ltd
Ship owner: Saipem Italy
Project location: Yantai, Shandong
D90 is the six generation of semi-submersible drilling platform. Its working depth is 3048 m (as of July 1, 2008, there had been only 3 semi-submersible drilling platforms under construction that could realize this working depth).
Basic parameters of D90: total length of 115.0 m, molded breadth of 78.0 m, height of the tube rack deck of 42.4 m, length of the pontoon of 110.0 m, width of the pontoon of 16.0 m, height of the pontoon of 11.6 m, length of the stand column of 16.0 m, width of the stand column of 16.0 m, height of the stand column of 22.0 m, length of the upper platform of 74.0 m, width of the upper platform of 74.0 m, length of the tube rack deck of 77.0 m, width of the tube rack deck of 78.0 m, working draft of 23.6 m, displacement of 52,932 t, working temperature of -20℃–40℃, ocean temperature of 0℃–35℃. 
This project began to be designed in 2007. Zhaohe provided Yantai CIMC Raffles Offshore Ltd with spiral ducts, molded air ducts, silencers, adjusting air valves, accessories and stainless steel ducts.