裂缝性油藏微观水驱油渗流机理可视化研究  

Experimental study on microscopic water/oil displacement percolation mechanism of fractured reservoir

作　　者：刘彦子[1] 孙雷[1] 潘毅[1] 陈莹莹[1] 张威 

机构地区：[1]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 [2]辽河油田兴隆台采油厂采油作业四区,辽宁盘锦124010

出　　处：《油气藏评价与开发》2012年第5期28-31,共4页Petroleum Reservoir Evaluation and Development

摘　　要：为了更好地认识裂缝性碳酸盐岩油藏的渗流机理,结合实际油藏地质特征利用真实岩心设计制作了裂缝微观模型,使用微观驱替装置进行水驱油机理模拟实验,并用显微镜对实验过程图像进行采集,考察了在网络裂缝中水驱油过程中的油水运动分布特征以及微观渗流机理。观测到由于裂缝性油藏非均质性的影响,水驱后残余油存在形式主要有孤滴状、角隅状、段塞状及膜状等,每种残余油的形成机理也有所不同。除此之外,剩余油的形成和分布还受到岩石表面润湿性和裂缝连通性等的影响。In order to better understand the percolation mechanism of fractured carbonate reservoir, fractured microscopic model us- ing the real core from the oil field is designed and produced and combined with actual reservoir geological features. Micro-displace- ment device is used to simulate water flooding process, and a microscope is equipped to acquire the experimental image from which can see the distribution characteristics of the oil and water movement in the process of water flooding in the network cracks and analysis microscopic percolation mechanism. It is observed that due to the impact of the fractured reservoir heterogeneity, residual oil after water flooding is mainly in the form of isolated droplets, cant and membrane, etc. Each of the formation mechanism of the residual oil is different from others. In addition, the formation and distribution of remaining oil is also affected by the wettability of rock surface cracks and the impact of connectivity.

关 键 词：裂缝性油藏 水驱油 微观渗流机理 剩余油分布 

分 类 号：TE344[石油与天然气工程—油气田开发工程]