致密气藏开发过程中水侵量的最优化计算  

Optimized calculation of water influx in tight gas reservoir development

作　　者：张凤东[1] 康毅力[1] 刘永良[1] 游利军[1] 杨宇[1] 

机构地区：[1]西南石油大学"油气藏地质及开发工程"国家重点实验室,四川成都610500

出　　处：《油气地质与采收率》2007年第6期85-87,共3页Petroleum Geology and Recovery Efficiency

基　　金：中国石油天然气股份有限公司科技风险创新研究项目"致密砂岩气藏多尺度水相圈闭损害模型与调控研究"(07ZQ026-113);四川省杰出青年学科带头人培养基金项目"致密砂岩气藏经济开发全过程储层保护"(02ZQ026-042)资助

摘　　要：在致密气藏开发过程中,水侵量的准确计算是预测水侵开发动态及防治水相圈闭损害的重要内容。把裂缝—孔隙型气藏划分为基质系统和裂缝系统,通过建立水驱致密气藏物质平衡方程及最优化数学模型,应用遗传算法编制计算机程序,对致密气藏开发中的水侵量进行计算。避免了使用难以获取的或获取不准确的地层及水体参数的发生,在进行水侵量计算的同时,得出了在不同开发时期的产气量、基质系统向裂缝系统的转移气量等参数,为气藏的动态分析和预测提供了依据。For a water drive tight gas reservoir, the accurate calculation of water influx is an important job for forecasting water invasion performance and preventing aqueous phase trapping damage. Fractureporosity tight gas reservoir can be divided into matrix system and fracture system. The material balance equation of the water-drive tight gas reservoir and the optimized mathematical model are first established, then a computer program based on genetic algorithm is written, which is used to calculate the amount of water influx. This calculation does not involve the formation and aquifer parameters that difficult to obtain and incorrect. The gas production in different development stages and the gas transfer from matrix system to fracture system as well as the water influx are obtained simultaneously, which provides foundation for dynamic analysis and performance prediction of the gas reservoirs.

关 键 词：致密气藏 水侵量 优化模型 遗传算法 裂缝系统 转移气量 

分 类 号：TE319[石油与天然气工程—油气田开发工程]