Experimental study on axial load transfer behavior of a coiled tubing stuck in a marine riser
Experimental study on axial load transfer behavior of a coiled tubing stuck in a marine riser
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海洋立管中连续油管轴向载荷传递行为试验研究
DOI：
10.1177/1475090214563858
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发表时间：
2016-05
期刊：
影响因子：
--
通讯作者：
Xiong, Minghao
中科院分区：
文献类型：
--
作者：
Chen, Yingchun;Zhang, Shimin;Wang, Wenming;Xiong, Minghao
经过多年的使用，海洋隔水管将需要清管作业，以清除附着在其内部的蜡和其他碎片，以恢复生产。连续油管由于刚度低，在进行隔水管清管作业时会发生屈曲，导致注入力不能完全传递到其端部，最终损坏连续油管和隔水管。因此，为了保证操作的安全性和可靠性，本文报道了通过建造室内管中管平台对这一课题进行的实验研究。根据实验结果，内管轴向力传递效率始终小于1。当注入力小于内管的临界螺旋屈曲载荷时，在相同的出料力下，“非定边界”和“定边界”内管的轴向载荷传递效率基本相同。当注入力大于内管的临界螺旋屈曲载荷时，“边界不固定”会降低内管的轴向载荷传递效率;当注入力为临界螺旋屈曲载荷的3倍时，“边界不固定”的内管轴向载荷传递效率比“边界固定”的内管轴向载荷传递效率降低3%。由于“边界不固定”的外管会伸长，其轴向荷载的传递会比“边界固定”的“滞后”，即在相同的出力情况下，“边界不固定”的内管的注入位移会比“边界固定”的大。上述研究可为隔水管清管作业提供重要的理论支持。
After years of using, the marine riser would need pigging operation to remove wax and other debris attached to its interior to recover production. Due to its low stiffness, coiled tubing would buckle when performing the marine riser pigging operation, which would make the injecting force not able to completely transfer into its end and finally damage coiled tubing and riser. Thus, in order to ensure the safety and reliability of the operation, this article reports an experimental study on this topic by building an indoor pipe-in-pipe platform. According to the experimental results, the inner pipe’s axial force transfer efficiency is always less than 1. When injecting force is less than the inner pipe’s critical helical buckling load, the inner pipe’s axial load transfer efficiency is basically the same under “unfixed boundary” and “fixed boundary” at the same force-out. When injecting force is bigger than the inner pipe’s critical helical buckling load, “unfixed boundary” would help decrease the inner pipe’s axial load transfer efficiency; when the injecting force is three times the critical helical buckling load, the inner pipe’s axial load transfer efficiency of “unfixed boundary” can be 3% smaller than that of “fixed boundary.” As the outer pipe of “unfixed boundary” would elongate, its axial load transfer would be “delay” compared with “fixed boundary,” which means injected displacement of “unfixed boundary” inner pipe would be bigger than those of “fixed boundary” at the same force-out. The research done above might provide important theoretical supports for the marine riser pigging operation.
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影响因子：
4.3
作者：
Yingying Wang;Menglan Duan;Junkai Feng;Dongfeng Mao;Minghua Xu;S. Estefen
通讯作者：
Yingying Wang;Menglan Duan;Junkai Feng;Dongfeng Mao;Minghua Xu;S. Estefen
DOI：
10.1115/ipc2000-175
发表时间：
2000-10
期刊：
--
影响因子：
--
作者：
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通讯作者：
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影响因子：
3.6
作者：
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通讯作者：
G. Gao;S. Miska
影响因子：
4.3
作者：
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通讯作者：
Simon Falser;C. Bridge;A. Palmer
DOI：
--
发表时间：
1996-04
期刊：
--
影响因子：
--
作者：
Aidan O'Donoghue
通讯作者：
Aidan O'Donoghue