砾岩储层不同润湿性水驱油微观仿真实验研究  

Study on Micro-simulation Experiment of Water Flooding with the Conglomerate Reservoir of Different Wettability

作　　者：段宝江[1] 熊伟[1,2] 高树生[1,3] 胡志明[1] 薛惠[1] 聂超飞 

机构地区：[1]中国科学院渗流流体力学研究所,廊坊065007 [2]北京大学地球与空间科学学院,北京100087 [3]中国石油勘探开发研究院廊坊分院,廊坊065007 [4]中国石油大学,北京100087

出　　处：《科学技术与工程》2012年第36期9928-9932,共5页Science Technology and Engineering

摘　　要：根据砾岩油藏岩石的复杂孔隙结构,在玻璃片上制作透明的微观玻璃平面模型,并对其作不同润湿性的处理后进行水驱油实验,来分析油层内油水界面的状态、剩余油的分布规律以及水驱油规律。实验表明:(1)油湿与水湿的模型在油水分布平衡条件下,其微观孔隙内油水分界面凹凸方向相反;(2)微观孔隙结构中,细小孔道、流向垂直孔道、大孔道的壁面、盲孔这四种典型的孔隙结构极易形成剩余油;(3)亲油性油层的驱油效率比亲水性油层的低。This experiment aims to make a transparent glass areal micro-model on glass sheet, according to the complex pore structure of conglomerate reservoir rocks, and make a water-flooding test after wetting treatment for these conglomerate reservoir rocks to different levels. On the basis of which analyses will be made of the oil-water interface state in oil layers, the distribution regularity of the remaining oil, as well as the law of water flooding . The experiment demonstrates that first, under the balancing conditions between oil and water distribution, the oil- water interface in micro-pores bumps in opposite directions in the oil wet and water wet models; second, remaining oil tends to be easily formed in such four typical pore structures as fine passes, vertical- flowing passes, big passes of the inner wall and blind holes in the micro-pore structures ; third, the oil displacement efficiency of lipophilic oil layers is far lower than that of hydrophilic layers.

关 键 词：水驱油 微观模型 油水界面 剩余油 水驱规律 

分 类 号：O647.5[理学—物理化学]