摘要
弱水侵气藏的单井动态控制储量,若通过忽略水侵按照定容封闭气藏的物质平衡方程计算,结果误差较大。针对此现象,提出一种简单计算方法。在考虑弱水侵气藏的存水体积系数为常数的基础上,将水驱气藏物质平衡方程左右两边分别独立形成新的方程,利用其与累计产气量之间的关系,通过参数的简单调整,直接可得气井控制储量和气藏存水体积系数。
Generally, in the process of calculating single well controlled reserves of weak water influx gas reservoir, it tends to result in big error if we ignore water invasion and accord with the material balance equation of constant volume closed gas reservoir. Based on the hypothesis that water volume coefficient is constant in the weak water in- flux gas reservoir, a new way was proposed to solve the problem. First of all, material balance equation of water drive gas reservoir was divided and either side was of independent new equation. Then, using the relationship be- tween these two equations and the cumulative gas production, well control reserve and water storage volume coeffi- cient were obtained by simple adjustment of parameters.
出处
《重庆科技学院学报（自然科学版）》
CAS
2015年第3期40-42,共3页
Journal of Chongqing University of Science and Technology：Natural Sciences Edition
基金
国家重点基础研究发展计划(973)项目"二氧化碳置换页岩气多尺度多场渗流理论"(2014CB239205)
关键词
弱水侵气藏
单井控制储量
物质平衡方程
存水体积系数
水侵量
weak water invasion gas reservoir
single well controlled reserves
material balance equation
waterstorage volume coefficient
water influx
