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裸眼完井分支水平井井筒压力分布理论研究 被引量:5
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作者 陈要辉 阎铁 +2 位作者 刘颖 毕雪亮 张荣光 《钻采工艺》 CAS 2004年第1期1-3,共3页
根据水平井筒内单相变质量流特点 ,考虑影响井筒压降大小的各个因素 ,利用质量守恒定律、动量定理以及管流摩阻公式 ,建立了水平井筒压降计算模型。把井筒压降计算模型与油藏三维渗流模型耦合起来 ,可以得到井筒中的压力分布。通过对分... 根据水平井筒内单相变质量流特点 ,考虑影响井筒压降大小的各个因素 ,利用质量守恒定律、动量定理以及管流摩阻公式 ,建立了水平井筒压降计算模型。把井筒压降计算模型与油藏三维渗流模型耦合起来 ,可以得到井筒中的压力分布。通过对分支水平井井筒压力的初步研究 ,建立了井筒压力分布求解模型 ,得出了一些有益的结论 。 展开更多
关键词 裸眼完井 水平井 井筒压力 压力分布理论 油藏
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Comparative study of different theories on active earth pressure 被引量:1
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作者 S.P.Yap F.A.Salman S.M.Shirazi 《Journal of Central South University》 SCIE EI CAS 2012年第10期2933-2939,共7页
Determination of distribution and magnitude of active earth pressure is crucial in retaining wall designs. A number of analytical theories on active earth pressure were presented. Yet, there are limited studies on com... Determination of distribution and magnitude of active earth pressure is crucial in retaining wall designs. A number of analytical theories on active earth pressure were presented. Yet, there are limited studies on comparison between the theories. In this work, comparison between the theories with finite element analysis is done using the PLAXIS software. The comparative results show that in terms of distribution and magnitude of active earth pressure, RANKINE's theory possesses the highest match to the PLAXIS analysis. Parametric studies were also done to study the responses of active earth pressure distribution to varying parameters Increasing soil friction angle and wall friction causes decrease in active earth pressure. In contrast, active earth pressure increases with increasing soil unit weight and height of wall. RANK/NE's theory has the highest compatibility to finite element analysis among all theories, and utilization of this theory leads to proficient retaining wall design. 展开更多
关键词 active earth pressure retaining wall PLAXIS comparative study RANKINE's theory COULOMB's theory
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