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首页> 外文期刊>Key Engineering Materials >Influence of Fatigue Loading on the Engineering Critical Assessment of Steel Catenary Risers in Sour Deepwater Oil and Gas Developments
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Influence of Fatigue Loading on the Engineering Critical Assessment of Steel Catenary Risers in Sour Deepwater Oil and Gas Developments

机译：疲劳载荷对酸性深水油气开发中钢悬链线工程临界评估的影响

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Steel catenary risers (SCR) are used in deepwater oil and gas developments to transfer produced fluids from the seabed to surface facilities. SCRs can be subject to fatigue loading from a variety of sources including wave and tidal motion, vortex induced vibration (VTV) and operating loads. When the produced fluids are sour (ie contain water and H_2S) higher fatigue crack growth rates (FCGR) are expected, and this can have a significant effect on defect tolerance.rnThe aim of this paper is to provide guidance on the current best practice methods for performing engineering critical assessments (ECA) on internal surface breaking defects in SCRs operating in a sour environment and subject to VIV fatigue loads. Example ECA calculations are presented for circumferential girth weld flaws, based on the failure assessment diagram (FAD) approach within the framework of BS 7910 [1]. The influence of certain key input variables is demonstrated, including the FCGR, determined from recent sour test data generated as part of this research.
机译：钢悬链立管（SCR）用于深水油气开发，将产出的流体从海床转移到地面设施。 SCR可能会受到来自各种来源的疲劳载荷的影响，这些来源包括波浪和潮汐运动，涡激振动（VTV）和操作载荷。当产出液变酸（即包含水和H_2S）时，预期会出现更高的疲劳裂纹扩展率（FCGR），这可能对缺陷耐受性产生重大影响。rn本文旨在为当前最佳实践方法提供指导用于对在酸性环境中承受VIV疲劳载荷的SCR中的内部表面破裂缺陷进行工程关键评估（ECA）。基于BS 7910 [1]框架内的失效评估图（FAD）方法，给出了针对周向缝焊缝缺陷的ECA计算示例。演示了某些关键输入变量（包括FCGR）的影响，该变量是根据本研究的一部分最近产生的酸性测试数据确定的。

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