重庆大学学报Issue(1)：102-109,8.DOI:10.11835/j.issn.1000-582X.2014.01.016
页岩气压裂水平井生产数据分析方法
摘要
Abstract
Production data analysis is an effective method of evaluating gas in place,parameters of reservoir and hydraulic fractures.Current model of production data analysis fails to make sense because of the existence of absorption,multi-fracturing,and stimulated reservoir volume (SRV).Considering the effect of desorption,fracture interacting and closed boundary,the authors calculate the productivity of multi-fractured horizontal well in shale gas by Laplace transform and pressure superposition principle.Then theoretical charts of Agarwal-Gardner production decline curves are presented by employing new definition of dimensionless material balance time and dimensionless production, which is based on asymptotic approximations.The result shows that Agarwal-Gardner curves can be divided into two parts where they are scattered in early transient period,and where their shape was influenced by parameters relevant to adsorption,position of each fracture and reservoir geometry,and then drawn to Arps harmonious decline in pseudo steady state period.Reservoir parameters,hydraulic fracture characteristics and gas in place are evaluated by using the type curve matching with actual production data.关键词
页岩气/不稳态渗流/物质平衡时间/渐进分析/Agarwal-Gardner图版/生产数据分析Key words
shale gas/unsteady state flow/material balance time/asymptotic approximations/Agarwal-Gardner curves/production data analysis分类
能源科技引用本文复制引用
王军磊,位云生,程敏华,罗万静..页岩气压裂水平井生产数据分析方法[J].重庆大学学报,2014,(1):102-109,8.基金项目
国家重大科技专项资助项目 （）
