Gas Flow in a Stratified Porous Medium with Crossflow  

作　　者：Sun Hedong Gao Chengtai Qian Huanqun Zhou Fangde 

机构地区：[1]State Key Laboratory of Multiphase Flow in Power Engineering Xi’an Jiaotong University,Xi’an 710049,China [2]Department of Petroleum Engineering,Xi’an Petroleum Institute,Xi’an 710065,China

出　　处：《Journal of Thermal Science》2002年第1期35-40,共6页热科学学报（英文版）

基　　金：the National NatualScience Foundation of China (No.59995460).

摘　　要：A new model called semi-permeable wall model is presented for multilayer gas reservoir. The model is used to study the influence of crossflow on pressure transient well tests and other single-phase flow problems. It is suggested here to use this model to approximate the actual multilayer gas reservoir, so that the problem is greatly simplified mathematically. Its differential equation is established here for multilayer gas reservoirs, and is linearized by normalized pseudo pressure and pseudo time. Simulation program is developed by finite-difference method when all layers are perforated. The feature of wellbore pressure and rate is clarified by analyzing the results of numerical simulation.A new model called semi-permeable wall model is presented for multilayer gas reservoir. The model is used to study the influence of crossflow on pressure transient well tests and other single-phase flow problems. It is suggested here to use this model to approximate the actual multilayer gas reservoir, so that the problem is greatly simplified mathematically. Its differential equation is established here for multilayer gas reservoirs, and is linearized by normalized pseudo pressure and pseudo time. Simulation program is developed by finite-difference method when all layers are perforated. The feature of wellbore pressure and rate is clarified by analyzing the results of numerical simulation.

关 键 词：MULTI-LAYER gas reservoir semi-permeable wall model numerical simulation transient well-test wellbore storage SKIN factor. 

分 类 号：TE311[石油与天然气工程—油气田开发工程]