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在开始注水项目时,向水中添加聚合物可以避免高渗透率的变化和不利的流度比。在怀俄明东北部的保德河盆地,油气生产单位从注水开始时便对AdonRoadUnitMinnelusa油藏实施聚合物强化注水驱油,以此改善大的渗透率变化和不利的流度比,从而获得了超出预想的效果。聚合物和胶凝项目提高了原油采收率并减少了水处理量。从1996年1月,在32.2%的孔隙体积(PV)总注水后,总采收率为原始原油地质储量(OOIP)的39.5%,相比之下,在累积注水相同的情况下,Minnelusa单纯注水的OOIP为27%。最终采收率已明显超过了原始的模拟预测。
Adding polymer to water at the beginning of a water injection project can avoid high permeability changes and unfavorable flow ratios. In the Baode River basin in northeastern Wyoming, oil and gas production units implemented polymer-enhanced flooding and flooding of the AdonRoadUnitMinnelusa reservoir from the beginning of flooding to improve large permeability variations and unfavorable fluidity ratios, resulting in more than expected Effect. Polymer and gelling projects increase oil recovery and reduce water handling. From January 1996, after 32.2% of the total PV volume injection, the total recovery was 39.5% of the original OOIP, as compared to the same case of cumulative waterflood Under, Minnelusa water-filled OOIP was 27%. The ultimate recovery has clearly exceeded the original simulation forecast.