摘要
深层高压有水气藏生产动态规律复杂,常规方法计算气藏动态储量的准确度低.基于水驱气藏物质平衡方程式,建立了地层弹性能与地层压力的幂函数关系.通过引入动态岩石压缩系数、累计水侵量等关键参数的计算方法,形成无量纲压力和无量纲产量的物质平衡方程,进而建立了一套高压气藏动态储量的图版拟合计算方法.定量分析了压缩系数、气藏压力等参数对图版的影响,并通过现场实例验证方法的实用性.研究认为,新分析方法能够有效考虑高压气藏水体入侵的影响,用于准确地评价气藏的动态储量.
The production performance law of deep geopressured water-drive gas reservoirs is complex,and the accuracy of conventional methods to calculate gas reservoirs dynamic reserves are low.Based on the material-balance-equation of water-drive gas reservoirs,the power function relationship between formation elasticity and formation pressure is established.By introducing the calculation methods of key parameters such as dynamic rock compression coefficient and cumulative water invasion,the material-balance-equation of dimensionless pressure and dimensionless production is formed.Furthermore,a set of type curves calculation method of dynamic reserves of geopressured gas reservoir is established.The effect of parameters such as compression coefficient and gas reservoir pressure on the type curves is quantitatively analyzed,and the availability of the method is verified by field application.The study shows that the new analysis method can effectively consider the influence of water intrusion in geopressured gas reservoir and can be further used to accurately evaluate the dynamic reserves of geopressured gas reservoir.
作者
马奔腾
段永刚
张哲伦
朱亮
李旭成
罗乐
MA Ben-teng;DUAN Yong-gang;ZHANG Zhe-lun;ZHU Liang;LI Xu-cheng;LUO Le(State key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu 610500,China;Northwest Sichuan Gas Mine,PetroChina Southwest Oil&Gasfield Company,Jiangyou 621799,China)
出处
《陕西科技大学学报》
北大核心
2023年第1期103-109,共7页
Journal of Shaanxi University of Science & Technology
基金
国家自然科学基金项目(51904254)
中国石油集团公司西南油气田分公司科技计划项目(20210303-14)。
关键词
高压气藏
水侵
物质平衡
无量纲图版
储量评价
geopressured gas reservoir
water invasion
material balance
dimensionless type curve
reserve estimate
