低渗透气藏动态储量计算新方法  

A New Method to Calculate Dynamic Reserves of Low-permeability Gas Reservoir

作　　者：申颍浩[1] 何顺利[1] 王少军[2] 栾国华[1] 丁志川 

机构地区：[1]中国石油大学(北京)石油工程教育部重点实验室,北京102249 [2]中国石油勘探开发研究院,北京100083 [3]渤海钻探工程公司,任丘062552

出　　处：《科学技术与工程》2010年第28期6994-6997,共4页Science Technology and Engineering

摘　　要：由于低渗透气藏的特殊性,传统的压降法、弹性二相法等动态储量的计算方法在低渗透气藏中不适用,或者适用条件苛刻,需要经过复杂的修正,应用复杂。提出了一种计算低渗透气藏动态储量的新方法——产量不稳定法,该方法基于Blasingame等人的物质平衡方程与拟稳态方程相结合的理论,利用单井生产历史数据(产量和油、套压),计算动态储量。给出了低渗透气井的应用实例,综合分析表明该方法比传统方法更适合低渗透气藏的动态储量评估。Because of the particularity of low-permeability gas reservoir,the traditional methods to calculate the dynamic reserves,such as pressure drawdown method and elastic 2-phase method,don＇t fit to the low-permeability gas reservoir properly,or need harsh requirements,Which is hard to use.This article presents a new method to calculate dynamic reserves of low-permeability gas reservoir,which is so-called rate transient method.Basing on the combination of material balance equation and pseudo-steady flow equation,the method can be used to calculate dynamic reserves only taking advantage of the daily production data（rate,tubing pressure and casing pressure）.The article also presents the applied example,and the comprehensive analysis shows that the new rate transient method is better than the traditional methods for calculating dynamic reserves of low-permeability gas reservoir.

关 键 词：低渗透气藏 物质平衡 动态储量 压降法 弹性二相法 产量不稳定法 

分 类 号：TE122.12[石油与天然气工程—油气勘探]