聚合物驱后泡沫驱提高采收率技术试验研究

Experiment of Enhancing Oil Recovery by Foam Flooding Post Polymer Displacement

通过聚合物及泡沫在石英砂模型中形成的封堵能力比较、聚合物与泡沫体系驱油能力比较及聚合物驱后泡沫驱油试验 ,证明泡沫驱在多孔介质中具有良好的封堵调剖能力 ,并且在油藏中能够选择性封堵高渗层 ,对于聚合物驱后未能波及的低渗层具有良好的驱油能力 。

Through comparing the shut-off capacity of polymer with that of a foam, the flooding capacity of the polymer system with that of the foam system as well as a foam flooding post polymer displacement test in a quartz sand model, it is proven that good shut-off and profile control capacity in porous medium is achieved for the foam flooding and high permeability formation could be shut off selectively with good displacement capacity in low permeability formation which is not swept after polymer displacement, it is an effective way after polymer displacement.