超高压气藏单井控制动态储量评价方法  

A New Method for Evaluation of Single Well-Controlled Dynamic Reserves in Overpressured Gas Reservoir

作　　者：王卫红[1] 郭燕东[1] 刘华[1] 

机构地区：[1]中国石化勘探开发研究院,北京100083

出　　处：《新疆石油地质》2011年第3期291-294,共4页Xinjiang Petroleum Geology

基　　金：中石化科技部项目(P08070)

摘　　要：针对超高压气藏开发过程中存在岩石变形、岩石压缩系数不是常数、渗透率应力敏感等特性,利用超高压气藏岩石压缩系数变化及渗透率应力敏感的实验成果,建立了考虑压缩系数连续变化的超高压气藏物质平衡方程和变形介质气井产能方程,并提出了用此方程拟合气井生产数据评价超高压气藏气井井控动态储量的新方法。应用结果表明,超高压气藏岩石压缩系数和渗透率应力敏感对储量的计算结果影响非常大,若不考虑这些因素,计算的储量值则会偏小15%~20%.Rock deformation,varied cock compressibility coefficient and permeability stress-sensibility will occur in the process of overpressured gas reservoir development.The experiment results are used to set up the material balance equation and deformed media gas well productivity equation with consideration of continuous change of the compressibility.By these equations,a new method for matching the production data of gas well and evaluating the well-controlled dynamic reserves in such a gas reservoir.The application results shows that the rock compressibility coefficient and permeability stress-sensitivity of an overpressured gas reservoir has a big effect on calculation of the reserves.If these factors are not considered,the calculated reserves will be lower by 15%～20% than the real reserves.

关 键 词：超高压气藏 物质平衡 岩石压缩系数 应力敏感 产能方程 动态储量 

分 类 号：TE319[石油与天然气工程—油气田开发工程]