高含CO_2气井产量动态分析数学模型  

Novel Mathematical Model for Rate Transient Analysis of CO_2 Rich Wells

作　　者：吴明涛 王晓冬[1] 袁天姝 WU Ming-tao;WANG Xiao-dong;YUAN Tian-shu(School of Energy and Resources, China University of Geosciences（Beijing）, Beijing 100083, China;Beijing Key Laboratory of Unconventional Natural Gas Geology Evaluation and Development Engineering, Beijing 100083, China)

机构地区：[1]中国地质大学(北京)能源学院,北京100083 [2]非常规天然气地质评价与开发工程北京市重点实验室,北京100083

出　　处：《煤炭技术》2018年第7期50-52,共3页Coal Technology

基　　金：国家科技重大专项(2016ZX05060);国家自然科学基金项目(51674227)

摘　　要：常规气井的产量动态分析模型难以适用于高含CO_2气井。在优选出适合计算高含CO_2天然气物性算法的基础上,利用拟时间因子方法使天然气渗流方程线性化,结合物质平衡方程、Laplace变换及Stehfest数值反演技术,得到方程解析解。建立了高含CO_2气井产量动态分析数学模型,为此类气藏的开发提供了理论基础。The model of rate transient analysis for conventional gas wells is inapplicable to wells with high-component of CO2. Based on the optimum of the calculation methods to properties of C02 rich reservoirs, the pseudo-time factor was utilized to linearize the equation of gas flow and analytical solutions could be got combining with the material balance equation,Laplace transformation and Stehfest numerical inversion technique. A model of rate transient analysis for CO2-rich well was established and a theoretical basis was supplied for the exploitation of CO2-rich reservoirs.

关 键 词：高含CO2气井 拟时间因子 产量动态分析 

分 类 号：TE32[石油与天然气工程—油气田开发工程]