微观水驱油实验及剩余油形成机理研究

Microscopic waterflood test and study on remaining oil
forming mechanism

苏娜1 黄健全1 韩国辉2 于春生

西南石油大学油气藏地质及开发工程国家重点实验室，四川成都610500 西安石油大学石油工程学院，陕西西安710065

针对高中低不同渗透率的真实岩心平面模型，采用最新研制的彩色可视化图像分析系统
开展了微观水驱油实验。通过不同渗透率岩心在不同速度下的驱替实验，经过图像系统分析，研究了剩
余油形成机理，并从微观角度分析了不同渗透层采收率不同的原因。高渗层由于水的突进现象严重使采
收率较中渗层偏低，低渗层孔喉小，裂缝不发育其采收率也最低。此次实验研究为非均质油藏合理安排
开发层系组合、提高低渗层动用程度、进一步开展挖潜工作提供了实验依据。

In view of areal model of real core including high, middle and
low permeability, complete microscopic waterflood test has been
done by colored visualization analysis imager system in this paper.
Through the test, the forming mechanism of remaining oil is
studieed, and the reason of different permeability with different
recovery in microscopic aspect is analysed. The conclusion provides
laboratory experiment foundation for dealing with layer series of
development reasonably in heterogeneous reservoir, enhancing low
permeability reservoir degree of production and farther developing.