浅析两相采油指数与单相采油指数的关系  

Simple Analysis of the Relationship Between Two Phase Productivity Index and Single Phase ProductivityIndex.

作　　者：狄伟 

机构地区：[1]中国新星石油公司华北石油局开发处

出　　处：《油气井测试》1999年第1期72-74,78,共4页Well Testing

摘　　要：对溶解气驱饱和油藏甚至未饱和油藏来说 ,当井底流压低于饱和压力时 ,井筒附近存在两相流动 ,油井有一个两相采油指数 ;当井底流压高于或等于饱和压力时 ,井筒附近存在单相流动 ,油井有一个单相采油指数。经对 Hasan、Fetkovich、陈元千和李晓平等得出的采油指数的数学表达式分析对比表明 ,两相采油指数和单相采油指数之间存在一定的关系 。For dissolved gas drive saturated reservoir and even unsaturated reservoir,when bottom hole flowing pressure isbelow saturation pressure,it exists two phash flow near wellbore,there is a two phase productivity index in theoil well. While bottom hole flowing pressure is above or equal to saturation pressure,it exists single phase flownear wellbore, there is a single phase productivity index in the oil well. Through analysis and comparison tomathematical expression of productivity index generated by Hasan,Fetkovich,Chen Yuan qian and Li Xiaoping,it indicates that there is a certain relationship between two phase productivity index and single phase productivityindex, but two phase productivity index can not be represented by the tangent line of production rate versuspressure relation curve.

关 键 词：溶解气驱 单相流动 两相流动 采油指数 对比 

分 类 号：TE35[石油与天然气工程—油气田开发工程]