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Strength design method for tubing hanger of subsea christmas tree against big temperature difference
The tubing hanger is an important component of the subsea Christmas tree, experiencing big temperature difference which will lead to very high thermal stresses. On the basis of API 17D/ISO 13628-4 and ASME VIII-1, and by comprehensively considering the erosion of oil and the gravity load of the tubing, a calculation model is established by regarding design pressure and thermal stress, and the method for designing the tubing hanger of the horizontal Christmas tree under big temperature difference condition is developed from the fourth strength theory. The proposed theory for strength design of the tubing hanger in big temperature difference is verified by numerical results from ABAQUS. 相似文献
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深海水下采油树结构及强度计算 总被引:2,自引:0,他引:2
针对不同水深、油气温度等操作条件对水下采油树结构的影响,采用ABAQUS软件对深水水下采油树在正常生产工况下的整体结构强度进行计算,总结出不同水深以及不同油气温度对水下采油树结构强度影响的规律.计算结果表明:在高油气温度、深水条件下,采油树的综合应力受其水下导向基座及H4连接器等固定边界的影响很大.凶此,在设计水下采油树时需特别考虑水下导向基座及H4连接器等的设计,尽量减小固定边界的边界效应对采油树的影响范围,避免这些边界效应与采油树所受外力产生的应力叠加.同时,为减小热应力值,应注意采油树的保温设计. 相似文献
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