Technical Research On The Different Sedimentation Model Comprehensive Adjustment About Class Ⅱ Reservoir In Da-Qing Sa-Bei Development Zone

In this article, through analysised the various types and complex characteristics ofmicrofacies of Class Ⅱ reservoir in Sa-Bei development zone, through the finemultidisciplinary oil reservoir researched, cleared reservoir sedimentation model, It carry outtechnology research on the different depositional model well group of remaining oildistribution and dynamic change characteristics and related adjustment. Application of thetechnology achievement, Recovery Factor improve up to above12%in four polymerflooding blocks to Class Ⅱ reservoir. These four polymer flooding blocks is A class blockbased on the classification evaluation. development effect and benefit is remarkable.The NorthⅡ-west-westI block is the first industrial promotion Class Ⅱ reservoir block inSa-Bei development zone.There are many of exploited horizons,various types of microfacies,semi pro heterogeneity on interlayer and plane.The ratio of reservoir Water absorptionthickness is low. Inhaled effect is difference between well group. By studying thesedimentation model of channel sand body reservoir, we determined the depositional model ofwell group.Combined with the use of reservoir sedimentation model different status anddevelopment effect research, we determined the dynamic change rule and effect of differentdepositional model for polymer floodingreservior. According to the dynamic changecharacteristics of different depositional model, formed the fast personalized plan adjustmentcomplete set of technique on Class Ⅱ reservoir about whole hierarchical column, and cometrue the depth profile control. The study to improve the development effect of polymerflooding on subsequent to block polymer flooding oil development has the important guidingsignificance to the forty million tons of continuous production in Daqing oilfield.