摘要
过去人们普遍认为水驱后,利用高粘度的聚合物驱能提高油藏的采收率是因为聚合物具有较高的粘度,提高注入流体的流度比和波及系数,从而提高采收率。忽略了聚合物弹性效应对对提高采收率的影响。对比相同粘度的黄原胶驱和聚合物驱对水驱后的岩心的采收率;并应用可视化模型,从力学的角度上分析聚合物驱的微观作用机理。
It was generally accepted that high viscosity of polymer was the main factor to enhance oil recovery because it could improve mobility ratio and conformance of injected fluid.And elastic effect of polymer to oil recovery was neglected.Oil recovery of polymer displacement and xanthan gum displacement is studied after water flooding;and visual model is used,polymer displacement micro-mechanism is analyzed from mechanical factor.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2008年第05X期332-334,共3页
Journal of Oil and Gas Technology
关键词
粘弹性聚合物
剩余油
驱替机理
viscous-elastic polymer
remaining oil
displacing mechanism.
