考虑启动压力梯度的油井流入动态  

Oilwell Inflow Considering Starting Pressure Gradient

作　　者：李婧[1] 李晓平[1] 王营营[1] 覃得强 刘铁 马强[4] 

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,成都610500 [2]长庆油田超低渗透油藏第一项目部,甘肃庆阳745400 [3]长庆油田第二采油技术服务处,甘肃庆阳746500 [4]长庆油田采油一厂,陕西延安716000

出　　处：《重庆科技学院学报（自然科学版）》2013年第4期44-46,57,共4页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：国家重大专项(2009E-0307);西南石油大学创新基金(GIFSB0701)

摘　　要：低渗透油藏中存在启动压力梯度,水驱油藏中当井底流压低于饱和压力后,流入动态曲线将向压力轴偏转,并出现最大产量点。基于此现象,建立考虑启动压力梯度因素的油井流入动态曲线方程,用于不同流动压力下的油井流入动态计算。In the low permeability reservoir,there exists a starting pressure gradient.And,in the water drive reservoir,when the flowing bottom-hole pressure is lower than the saturation pressure,the maximum production appears.Meanwhile the inflow performance relationship curve shifts to pressure axis.Therefore,in this study,a well inflow performance relationship equation,which takes starting pressure gradient into consideration,is established.It can be used for calculations under different well inflow pressure.The factors which influence well production are also analyzed in this study.

关 键 词：油井流入动态 IPR曲线 启动压力梯度 

分 类 号：TE312[石油与天然气工程—油气田开发工程]