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中文摘要：
选用大庆油田一类、二类储层天然岩心的平行样,水测渗透率约1.0,0.6和0.2μm2,通过大量的恒速非稳态法实验,分别测定了水驱至含水率fw为90%,94%和98%时转注聚合物溶液及后续水驱全过程的相对渗透率曲线,分析了不同渗透率、不同转注聚时机对相对渗透曲线的影响.实验结果表明：同等渗透率级别时,越早转注聚其相对渗透曲线两相区跨度越大,残余油饱和度越低;转注聚时机相同时,岩心渗透率越高,油相相对渗透率下降越缓慢,两相区跨度越宽,残余油饱和度降低.
英文摘要：
Considering the actual situation which polymer is injected when the water-cut of water flooding is up to a certain degree during the development of oilfields,select three kinds of representative parallel natural core samples from first and second degree reservoirs in Daqing Oilfield,which water permeability are about 200,600,1 000 millidarcy,and through large of the unsteady-state method of constant injection rate;measure the relative permeability curves of the whole process of water flooding up to water-cut 90%,94%,98%,then polymer flooding,sequent water flooding;analyze the effect of permeability and transfer time of polymer flooding to the relative permeability curves.The results show that with the same permeability level,the earlier transferred to polymer flooding,lead to the larger of the span of two-phase region in relative permeability curves,the lower of the residual oil saturation;with the same transfer time,the higher the core permeability is,the slower the oil-phase relative permeability decreases,the broader of two-phase region,the lower of the residual oil saturation.
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同项目期刊论文
Experimental Study on the Molecular Dimensionand Configuration of Polymer and its Flow Characteristi
Investigation on Mechanisms of Polymer Enhanced Oil Recovery by Nuclear Magnetic Resonance and Micro
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