The research for the stationkeeping system and the mooring system for deep-water drilling device

Stationkeeping system of deep-water drilling device is essential for offshore drilling; the choice of positioning methods is related to the security, stability and engineering costs of the drilling. Mooring positioning system is commonly used in deepwater drilling device. How to choose the positioning means of deepwater drilling device and taut-wire mooring system which is suitable for deep-water drilling equipment as well as its characteristics are mainly introduced in this paper. In addition two kinds of new anchor widely used in mooring system of deep-water drilling device are introduced: suction anchor and vertically loaded anchor (VIA). This paper researches mooring system of a semi-submersible drilling unit and design process, analysis method are also introduced. Eventually combining the current status of deep-water drilling device and development trends of mooring system for deep-water drilling device, some suggestions are given.