压裂水平井渗流理论研究进展

系统地回顾了压裂水平井渗流理论发展历程,国外对压裂水平井的研究趋向于建立数学模型,利用源函数、三线性流模型及数值方法进行求解;国内对压裂水平井的研究重点在于分析压裂水平井产能特征。同时,还对国内压裂水平井产能分析方法,包括裂缝势函数分布法、保角变换法、裂缝离散法、当量(等效)井径法、源函数及格林函数法进行了分类总结,简要评述了各种方法的优缺点。最后分析了压裂水平井渗流理论研究中存在的各种问题,并在此基础上指出了压裂水平渗流理论的发展趋势。 

Research Review on the Theory of Fractured Horizontal Well Seepage

The study of the seepage laws of a single fracture is the beginning of the theory of fractured horizontal wells,and based on it,the productivity and pressure performance analysis theory of horizontal wells is established gradually.This paper conducts a systematic review of the development process of the theory.The foreign research emphasizes on building up a mathematic model and using the method of source function,three linear flow model and numerical method to solve.The domestic research focuses on the productivity of fractured horizontal wells.The main methods to analyze the productivity of fractured horizontal wells include the fracture potential function distribution,conformal mapping method,fracture discrete approach,equivalent radius method,source function and green function method,and the merits and demerits of these methods are evaluated.This paper analyzes the existing problems in the seepage theory of fractured horizontal wells,and points out the development tendency of the fractured horizontal well seepage theory.