Residual strength of corroded subsea pipelines subject to combined internal pressure and bending moment
Residual strength of corroded subsea pipelines subject to combined internal pressure and bending moment
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DOI：
10.1080/17445302.2015.1037678
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发表时间：
2015-07
影响因子：
2.1
通讯作者：
M. H. Mohd;Byeong Joon Lee;Yushi Cui;J. Paik
中科院分区：
文献类型：
--
作者：
M. H. Mohd;Byeong Joon Lee;Yushi Cui;J. Paik
用于深水油气生产的海底管道暴露在腐蚀、高内压、高温和弯矩等恶劣环境中。海底管道的故障可能会导致严重的问题，包括石油/天然气泄漏、碳氢化合物爆炸和火灾、生产停工以及维护和维修。因此，防止海底管道失效至关重要。研究了腐蚀海底管道在内压和弯矩作用下的剩余强度特性。采用ANSYS非线性有限元方法，通过改变腐蚀损伤、内压和弯矩的加载比以及腐蚀损伤的大小，研究了海底管道的剩余强度特性。建立了不同腐蚀损伤情况下海底管道极限强度与内压和弯矩的相关关系。最后，总结了本研究的启示和结论。
Subsea pipelines used for oil and gas production in deepwater are exposed to harsh environment involving corrosion, high internal pressure, high temperature, and bending moment. Failure of subsea pipelines can cause serious problems, including oil/gas spill, hydrocarbon explosion and fires, production downtime, and maintenance and repair. Hence, it is of paramount importance to prevent failure of subsea pipelines. The aim of the present study is to investigate the residual strength characteristics of corroded subsea pipelines under combined internal pressure and bending moment. ANSYS non-linear finite element method was applied to examine the residual strength characteristics of subsea pipelines by varying the corrosion damage and the loading ratio of internal pressure and bending moment, where the size of the corrosion damage was also varied. The ultimate strength interaction relationships of subsea pipelines between the internal pressure and bending moment with various corrosion damages were also developed. Finally, the insights and conclusions of the present study were summarised.