圆筒形超深海半潜式钻井储油平台运动特性分析

Hydrodynamic characteristics of cylindrical semi-submersible offshore oil platform

使用Pro/E软件对SEVAN 650平台和GVA 7500平台建模,将模型导入ANSYS Workbench程序的Hydrodynamic Diffraction模块,计算出2座半潜式钻井平台南海海况风暴自存状态下的运动响应幅值算子,得出2座平台各自的垂荡、横摇和纵摇特性曲线,进而对2座平台南海海况风暴自存状态下的运动特性进行对比分析.结果表明:SEVAN 650圆筒形半潜式平台在原油存储性能和甲板承受可变载荷性能优于GVA 7500平台的前提条件下,其在风暴自存状态时具有比GVA 7500更优的抗倾性能,但SEVAN 650平台在风暴情况下的垂荡响应幅值需要进一步减小.

The models of SEVAN 650 and GVA 7500 were established in Pro/E software. The proposed models were imported into the Hydrodynamic Diffraction module of ANSYS Workbench software to calculate the response amplitude operators of each platform in storm environment of South China Sea. The hydrodynamic character-istics of the two platforms in the storm environment were compared by the characteristic curves of heave, roll and pitch. The results show that SEVAN 650 has better crude oil storage capacity and deck variable load bearing capacity than those of GVA 7500, which indicates that SEVAN 650 has better anti-dumping capacity than that of GVA 7500 in storm environment. However, the heave response amplitude operator of SEVAN 650 in storm environment should be further reduced.