特低渗透油藏弹性采收率计算新方法  

A new method to calculate elastic energy recovery of ultra-low permeability reservoirs

作　　者：姜瑞忠[1] 张晓亮 马江平 杨仁锋[1] 

机构地区：[1]中国石油大学(华东)石油工程学院 [2]中海油研究总院 [3]陕西延长石油集团有限公司油气勘探公司

出　　处：《中国海上油气》2010年第1期27-29,共3页China Offshore Oil and Gas

基　　金：中石化股份公司科研项目(p06048)部分研究成果

摘　　要：考虑启动压力梯度和压力敏感性对特低渗透油藏弹性开发结束后压力分布的影响,基于油藏工程基本原理,提出了新的计算特低渗透油藏弹性采收率的方法。实例计算表明,常规油藏弹性采收率方法计算结果与实际偏差较大,而本文方法计算结果与油藏动态吻合较好,这说明本文方法对特低渗透油藏具有较好的适用性。In consideration of the impacts of starting pressure gradient and pressure sensitivity on the pressure distribution of ultra-low permeability reservoirs after their elastic energy exploitation,a new method to calculate elastic energy recovery is developed for this kind of reservoir on a basis of the general principles of oil reservoir engineering.According to the calculation examples,the elastic energy recoverys from the conventional method are quite different from the actual situations,and those from this new method are better in coincidence with the reservoir performance data,indicating its higher adaptability for the ultra-low permeability reservoirs.

关 键 词：特低渗透油藏 启动压力梯度 压力敏感性 弹性采收率 

分 类 号：TE348[石油与天然气工程—油气田开发工程]