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页岩气压裂过程套管失效机理有限元分析

Shiyou jixie, 2014
在页岩气压裂作业过程中，套管容易出现变形、破裂、错断等破坏性形式。为此，运用ABAQUS有限元分析软件建立套管的二维平面应变模型，模拟计算压裂后套管Mises应力及变形分布，找到套管损坏的主要影响因素。然后利用ABAQUS中关键字*Field实现地层岩石的性能随压裂进行不断降低，从而对四川某井套管失效问题进行了三维模型的实例分析。通过对有限元结果分析和对比压裂后MIT多臂测井曲线，认为套管失效是压裂过程中地层岩石性能降低、改造区域不对称、施工压力大以及地应力场重新分布共同作用的综合结果 ...
于浩, 练章华, 林铁军
doaj  

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Nan Fang Yi Ke Da Xue Xue Bao
Chen Z, Guo Y, Song S, Guo Q, Zhou D.
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[Review of application of U-Net and Transformer in colon polyp image segmentation]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Shi Y, Sun S, Liu J, Ma J, Li M.
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