一种简便计算边水体积的新方法  

A new simple method to calculate edge water volume

作　　者：王学忠[1] 

机构地区：[1]中石化胜利油田分公司,山东东营257000

出　　处：《特种油气藏》2010年第5期81-83,共3页Special Oil & Gas Reservoirs

基　　金：中石化重点科技攻关项目"春光油田开发动态监控系统研究及其应用";胜利油田重点科技项目"准噶尔盆地车排子地区排2新区开发关键技术研究"(YKY0612)

摘　　要：合理利用边水对于边水活跃的油藏开发非常有意义,前提条件是准确计算天然水体体积。针对天然水体体积计算难题,从水侵量的定义公式出发,以春光油田排2理想边水驱油藏为例,采用综合压缩系数进行校正,获得理想边水驱油藏天然水体体积的简便估算方法。经廖运涛方法获得的精确解验证,新方法计算精确度较高。对于井网完善,已全面投入开发,完全依靠边水补充能量,以自喷为主的高渗透、稀油油藏,在有明显油层压降的情况下,只要能够落实清楚总压降值和与之对应的水侵量,就可以准确估算出天然水体的体积。根据水体体积与原油体积的比值,判断该油藏天然能量的充沛程度,决定是否人工补充能量或者依靠天然能量开采。Rational use of edge water is of significant meaning to the development of reservoirs with active bottom water provided that the natural water volume is accurately calculated. A simple estimation method of natural water volume is derived for an ideal edge water drive reservoir by starting with the definition and formula of water influx and correcting with system compressibility and taking the Pai 2 reservoir in the Chunguang oilfield as an example. The new method has been verified by the rigorous solution derived from Liao Yuntao method to have high accuracy. The volume of natural water body can be accurately estimated if only the total pressure drop and the corresponding water influx are known in the case of there is evident reservoir pressure drop for high permeability and light oil reservoir with prefect well pattern fully put onto production and entirely depending on edge water energy. The ratio of water body volume to crude oil volume is used to decide the size of natural reservoir energy and whether to supplement artificial energy or rely on natural energy depletion.

关 键 词：边水驱 水体体积 水侵量 计算公式 综合压缩系数 地层总压降 春光油田 

分 类 号：TE33[石油与天然气工程—油气田开发工程]