Horizontal well testing analysis in low-permeability reservoirs based on finite element method

被引：2
|
作者：
Fan D.-Y. [1 ]
Yao J. [1 ]
Wang Z.-S. [1 ]
机构：
[1] College of Petroleum Engineering, China University of Petroleum
来源：
Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science) | 2011年 / 35卷 / 02期
关键词：
Finite element method; Horizontal well; Low-permeability reservoir; Threshold pressure gradient; Well testing analysis;
D O I：
10.3969/j.issn.1673-5005.2011.02.014
中图分类号：
学科分类号：
摘要：
Considering the threshold pressure gradient (TPG) phenomenon in low-permeability reservoirs, a mathematical unsteady flow model of horizontal well with TPG was established in box-shaped reservoir. The numerical solution of bottom pressure of horizontal well was obtained by using the Galerkin finite element method, which was verified by comparing with the classic Odeh solution. The results show that the horizontal well pressure and its derivative curves present an upward tendency when the TPG is considered. And the bigger the TPG, the more severe the curves upturned, namely, the greater pressure difference is required. Meanwhile, the effect of TPG on pressure derivative increases gradually, which is essentially different from the curve upturned when the pressure reaches the surrounding boundary.
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收藏
页码：80 / 84
页数：4
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