Research on the Riser Configuration and Control System for Deepwater Semi-submersible Drilling Platform
Taking the riser configuration of the semi-submersible drilling platform"HAI YANG SHI YOU 982"(HYSY982)as the research object,this study investigates the riser configuration and control system of the semi-submersible drilling platform with a maximum operating water depth of 1 500 meters.The minimum wall thickness required for the riser is determined based on different stress verification criteria,and the water depth for pipe collapse is determined according to the method specified in API 2RD.The top tension setting value is determined based on the top tension stability algorithm recommended in API 16Q.The relationship between tensioner tension setting and mud density is obtained,and the recommended optimal configuration value for the riser is provided.The guidance scheme for riser configuration,top tension setting,and control system designed based on this method is applied to the riser system design of the"HAI YANG SHI YOU 982"deepwater drilling platform.The result shows that this method is feasible and can effectively solve the key problems in riser configuration,top tension setting,and control system design of deepwater semi-submersible drilling platforms.
deep water drilling platformriser system configurationcontrol system
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