不同注聚时机驱油效果室内物理模拟评价

大庆油田聚合物驱油累积产量已经突破1.0×108吨,取得了巨大的经济效益。为更好地发挥聚合物驱油提高采出程度的作用,确定合理的注聚时机就成为科技人员十分关心的问题。针对矿场的实际需求,在人造一维长方岩心和二维平面岩心模型中分别进行了不同含水率条件下的聚合物驱油室内物理模拟实验研究。实验结果表明,无论是在长方岩心还是平面均质岩心,注入同等用量聚合物溶液,在含水率75%时注入的驱油效果要好于含水率95%时注聚的驱油效果。

Effect of the Physical Simulation Flooding in the Laboratory in Different Injection Time

Nowadays,the output of polymer flooding in Daqing oilfield has surpassed 100 million tons,and it has created tremendous economic benefits.To ascertain the rational time in polymer injection become a problem concerned by all of the science and technology personnel,thus,the enhancing recovery percent function of polymer flooding will be fully exerted.According to the requirement of oilfield development,we started to process physical simulation experiments in the laboratory on man-made 1-D rectangle core and 2-D plane core,on condition that the water cut is different.The result shows that if we inject the same polymer solution in weight,the flooding effect will be better when the water cut is 75% than when it is 95%,whatever the experiments were on the rectangle core or the place homogeneous core.