特种油气藏2012，Vol.19Issue(5)：90-92,96,4.DOI:10.3969/j.issn.1006-6535.2012.05.022
应力敏感性低渗透气藏垂直裂缝井非达西渗流产能分析
Productivity Analyses of Non - Darcy Permeable Flow in Stress - sensitivity and Low - permeability Gas Reservoirs with Vertical Fractures
摘要
Abstract
The forefathers study on the productivity of the gas wells of fractured low permeability gas reservoirs which does not consider the effect of stress - sensitive and high speed non - Darcy effect results in the difference of predicted productivity from real productivity. Therefore,the paper has derived a productivity formula of low permeability gas reservoirs with vertical fractures which have infinite conductivity under the conditions of simultaneously considering stress - sensitive and high speed non - Darcy effect by using the conformal transformation principle and the conversion of the complex low permeability of gas reservoirs with vertical fractures into a single direction permeable flow and based on Forchheimer equation. Based on the formula got above a theoretical productivity formula under the effect of different stress - sensitive coefficients is obtained and the formula is verified in field application. The study shows that stress - sensitive greatly influence the productivity of fractured wells of low permeability gas reservoirs and productivity decreases with the increase in stress - sensitive coefficients. The methods of calculation is easy to be applied in field and is really practical.关键词
低渗透气藏/压裂井/产能/应力敏感/高速非达西效应Key words
low - permeability gas reservoir/fractured well/productivity/stress - sensitivity/high - speed non - Darcy effect分类
能源科技引用本文复制引用
曾杨,贺陆军,廖剑波,杨丹,李波..应力敏感性低渗透气藏垂直裂缝井非达西渗流产能分析[J].特种油气藏,2012,19(5):90-92,96,4.基金项目
国家"973"计划"碳酸盐岩缝洞型油藏注水开发研究"(2011CB201005) （2011CB201005）
