储层应力敏感性对致密气藏压裂水平井试井分析的影响  

Influence of stress sensitivity on well test analysis for fractured horizontal well in tight gas reservoir

作　　者：徐梦雅[1] 廖新维[1] 刘姣姣[1] 

机构地区：[1]中国石油大学(北京)石油工程教育部重点实验室,北京102249

出　　处：《陕西科技大学学报（自然科学版）》2012年第5期57-61,共5页Journal of Shaanxi University of Science & Technology

基　　金：国家重点基础研究发展计划项目(2011CB707302)

摘　　要：针对致密气藏储层特征,采用解析解与数值解相结合的半解析法,建立了考虑储层应力敏感性和裂缝导流能力的致密砂岩气藏多段压裂水平井渗流数学模型,提出了一种考虑储层应力敏感效应的致密砂岩气藏压裂水平井试井分析方法.通过模型求解,对比分析了不同压裂规模的水平井试井解释压力动态曲线,并明确了储层应力敏感性对压降、压恢试井分析的影响.Based on the geologic characteristics of tight gas reservoir, the paper presents a new approach of fractured horizontal well testing analysis in stress sensitive reservoirs. It u- ses semi-analytical solution of combination between analytical solution and numerical solution to construct the multi-fractured horizontal well model, in which the stress sensitivity of tight gas reservoir and the fracture conductivity are considered emphatically. According to the proposed model, there is a comparative analysis of the pressure transient curves in different size and parameters of the fractures and the influence of stress sensitivity on the interpretation of both draw-down test and build-up test are identified as well.

关 键 词：致密气藏 储层应力敏感性 压裂水平井 试井分析 

分 类 号：TE313.8[石油与天然气工程—油气田开发工程]