双河油田437Ⅱ4-6区块分子膜驱油效率的实验研究

Experimental Study of Molecular film deportation for ShuangHe 437Ⅱ4-6 Oilfield EOR

利用砂岩的静电吸附在固液界面形成分子膜,从而改变界面的润湿性,驱替出小孔中的残余油,提高驱油效率。对双河油田分子膜提高采收率进行实验,结果表明:分子膜驱油在原来水驱基础上提高驱油效率10%以上,完全满足现场要求。

In order to improve oil displacement efficiency, that make use of sandztone in the electrostatic adsorption of the solid--liquid interface to form membrane molecules,so that changing the wettability of the interface of sandstone, to displace residual oil from the middle of the keyhole. A laboratory study is carried on the experiment about molecular deposition flooding of Shuanghe Oilfield EOR. The result of this study that the molecular film displacement of reservoir oil efficiency after the original water flooding 10 percent more than the only water displacing oil efficiency, which is suitable for the requirements of Shuanghe Oilfield EOR completely.