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在没有很强的水驱情况下 ,NRRU一次采油一般不超过 2 0 %原始石油地质储量 (OOIP)。注水开发Minnelusa储层是可行的方法 ;然而 ,由于渗透率变异系数高 ,波及效率差。这样的变异系数可能引起水的迅速突破 ,高生产水油比 (WOR)和低注入压力。利用扩大聚合物注水改善油藏适应性能提高采收率4 5 %OOIP以上。在NRRU ,两种不同类型的扩大聚合物体系成功地应用到了一些注入井上。第一种体系是长期的深度胶态分散凝胶 (CDG) ;第二种体系是短期的本体凝胶 (BG) ,是一种新的阴离子聚丙烯酰胺和醋酸铬混合物 ,这种方法提高原油采收率估计达 15 5 0 0 0STBO
In the absence of a strong waterflood, NRRU primary oil recovery generally does not exceed 20% of the original oil geological reserve (OOIP). Water injection Development of the Minnelusa reservoir is a viable option; however, due to the high permeability variability, the sweep efficiency is poor. Such coefficients of variation can cause rapid breakthrough of water, high production water-oil ratio (WOR) and low injection pressure. Using enlarged polymer flooding to improve reservoir suitability and improve recovery 4 5% OOIP above. At NRRU, two different types of expanded polymer systems have been successfully applied to some injection wells. The first is a long-term deep colloidal dispersion gel (CDG); the second is a short-term bulk gel (BG), a new mixture of anionic polyacrylamide and chromium acetate that increases crude oil Oil recovery is estimated at 15 5 0 0 0 STBO