高含水期采出程度影响因素分析及定量计算——以大庆油田萨中开发区为例  

Analysis and quantitative calculation on influencing factors of recovery percent at the high water cut stage——a case study of Sazhong Development Area,Daqing Oilfield

作　　者：刘吉余[1] 刘曼玉[1] 徐浩[1] 

机构地区：[1]大庆石油学院,黑龙江大庆163318

出　　处：《油气地质与采收率》2010年第1期62-63,67,共3页Petroleum Geology and Recovery Efficiency

摘　　要：高含水期采出程度是编制油田开发调整方案的重要依据之一,直接影响油田开发效果的评价。因此,采出程度预测对油田开发具有重要的意义。进入高含水期开发的大庆油田萨中开发区有7口密闭取心井,采用逐步回归的方法,用6口密闭取心井的资料研究了对采出程度影响显著的参数并确定了各参数与采出程度的定量关系式;用另外1口密闭取心井的资料,根据确定的采出程度定量关系式计算该井的采出程度,计算出的采出程度与实际采出程度比较接近,一类油层采出程度的精度为77.65%,二类油层为94.30%,三类油层为90.95%,达到了精度的要求。该方法为预测非取心井采出程度提供了有效途径,为油田开发方案调整、措施井层优选提供了重要的依据。At the high water cut stage,recovery percent is one of the most important basis on compiling development and adjustment pro-gram and it has a direct impact on evaluation of oilfield development effect.So recovery percent prediction is of great signifi-cance to oilfield development.Seven coring wells in Sazhong Development Area of Daqing Oilfield are at the high water cut stage.Based on stepwise regression method and the six coring wells data,influencing factors on the recovery percent were as-certained and the quantitative relationship between various parameters and recovery percent was recognized.The recovery per-cent of another coring well was calculated with these relationships,which is close to the actual recovery percent.The accuracy of type I oil reservoir is 77.65%,94.30% of the type II and 90.95% of type IE oil reservoir,which has reached the require-ment.The method provides an effective means to predict the recovery percent of non-coring wells and offers an important basis for block adjustment and stimulating wells and layer optimization in oilfields.

关 键 词：采出程度 剩余油 高含水期 逐步回归分析 影响因素 定量计算 大庆油田 

分 类 号：TE341[石油与天然气工程—油气田开发工程]