变形介质气藏动态储量计算新方法  

Calculation of dynamic reserves of gas reservoirs with deformation medium

作　　者：陈玉[1] 王怒涛[1] 王门亮[2] 张风波[1] 

机构地区：[1]西南石油大学研究生院,四川成都610500 [2]川庆钻探工程有限公司,重庆400021

出　　处：《断块油气田》2009年第3期55-57,共3页Fault-Block Oil & Gas Field

摘　　要：物质平衡法计算动态储量,它的准确性很大程度上取决于目前地层压力的准确获得。但是,在实际生产中,地层压力的测试数据很少,给应用者带来较大困难;同时,在应用二项式产能公式时,相关系数并非都是已知。另外,大量变形介质气藏的发现,也给其储量计算提出了更高要求。利用物质平衡方程与产能方程结合,充分利用生产井的产量和井底流压等动态数据,同时考虑变形介质影响的情况下,建立井底流压和产量同时拟合的多目标拟合函数,采用多目标遗传算法进行求解。这不但可以获得较准确的动态地质储量,而且可得到地层压力的变化趋势。该方法已经在实际应用中取得了较好的效果。The accuracy of calculating the dynamic reserves by material balance method depends on accurately acquiring the current reservoir pressure, but there is few pressure test data in actual production, which brings a lot of problems to users. At the same time, the correlation factor is not known when using the binomial deliverability equation. In addition, the calculation of reserves must be improved as a lot of deformation medium gas reservoirs are found. Combined with the equation of material balance and deliverability equation and taken full use of the dynamic data of production and bottom hole flow pressure, this paper defines the multiple objective matching function of production and bottom hole flow pressure matching simultaneously at the case of considering the deformation medium influence, which can be calculated with multiple objective genetic algorithm. This method not only acquires more accurate dynamic geologic reserves, but also gets the trend of reservoir pressure. A good result has been obtained in practical application.

关 键 词：变形介质 气藏动态储量 物质平衡法 产能方程 

分 类 号：TE121.3[石油与天然气工程—油气勘探]