低渗透气藏产能方程的改进  

Modified Deliverability Equation of Low Percolation Gas Reservoir

作　　者：解庆阁[1] 刘志斌[1] 刘道杰[1] 王天柱[1] 

机构地区：[1]西南石油大学,成都610500

出　　处：《重庆科技学院学报（自然科学版）》2012年第3期68-70,105,共4页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：国家自然科学基金项目(50874094);高等学校博士学科点专项科研基金项目

摘　　要：低渗透气藏在成藏机理上与中高渗透气藏存在较大差别,若将中高渗透储层的开发理论和技术应用于低渗透储层必将产生较大误差。通过分析致密气藏成因、储层特征及渗流机理,考虑影响低渗透气藏渗透率的因素,将低渗透气藏低速渗流的指数式方程简化为达西渗流方程,建立改进的低渗透气藏产能方程,并给出该方程的求解方法。通过实例分析论证了此方法的可靠性和实用性。Using the theory and the technology which are fit for the high percolation gas reservoirs in the low ones will make mistakes.Because the low reservoirs are different from the high ones in mechanisms when they are formed.Analyzing the causes of formation,charaters of reservoir,influent mechanism,and other factors influencing the permeability of low percolation gas reservoir,this article takes exponential equation of low percolation reservoir simply as Darcys flow equation and provides a solution to the equation,but including the influence of critical flow velosity and pressure gradient.The case shows that the new method is reliable and practical.

关 键 词：低渗透气藏 渗流机理 产能方程 无阻流量 

分 类 号：TE328[石油与天然气工程—油气田开发工程]