文章基本信息

标题：Application of equivalent permeability in numerical simulation of horizontal wells in bottom water reservoirs
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作者：Li-Feng Li ; Bing-Bing Wang ; Xiang-An Yue 等
期刊名称：International Journal of Computer Science Issues
印刷版ISSN：1694-0784
电子版ISSN：1694-0814
出版年度：2013
卷号：10
期号：2
出版社：IJCSI Press
摘要：Coupled flow model used in numerical simulation of horizontal well in bottom water reservoir is difficulty to resolve. In this paper, equivalent permeability was introduced to improve numerical simulation with considering pressure drop in horizontal well of bottom water reservoir. The pressure drop formula in horizontal well was derived according to material and momentum balance. Equivalent permeability of two phase flow in horizontal well was defined based on pressure drop formula. By use of equivalent permeability, the correlation between pressure drop and velocity was deformed to the same as Darcys Law and horizontal well can be treated as the reservoir. Instead of coupled flow model, the same mathematics model of two phase flow in reservoir and horizontal well were established. In application, the reservoir and wellbore were given different data of porosity, permeability and saturation. In time region, the results got at the time step of j were transferred to time step of j+1, which was used to calculate equivalent permeability at time step of i+1. Case study indicated that numerical simulation based on equivalent permeability could be used in research of horizontal well.
关键词：Reservoir with bottom water; Horizontal well; Numerical simulation; Equivalent permeability; Pressure drop in horizontal well.