粘土胶驱油机理及渗流扩散规律实验研究  

AN EXPERIMENTAL STUDY OF THE MECHANISM OF OIL DISPLACEMENT WITH CLAY COLLOIDS

作　　者：李周荣[1] 周远斌[1] 王新[2] 李继勇[1] 袁明全[1] 

机构地区：[1]胜利油田有限公司,山东东营257051 [2]河南油田有限公司

出　　处：《西南石油学院学报》2002年第4期36-39,共4页Journal of Southwest Petroleum Institute

摘　　要：利用平板填砂物理模型 ,在初步探讨粘土胶 (SMD)体系驱油机理的基础上 ,重点研究粘土胶在不同渗透率模型中的渗流扩散规律 ,研究指出SMD体系驱油机理包括 :大小孔道压力均衡机理、压力波动机理、乳化 携带机理等 ;SMD体系在多孔介质中运移时前缘呈扇形推进 ,扇形边缘出现SMD体系稀释和扩散带 ,在低渗透层中会产生周期性向前突进现象 ;粘土胶体系能有效改善油水流度比 ,扩大波及体积 ,尤其对中高渗透层的调驱效果。通过改变SMD体系配方 。On the basis of preliminary studies on the mechanism of oil displacement with clay colloid SMD system, this work focuses on the regularities of percolation and dispersion of clay colloids in different permeability models. The physical models used are flat sand packs. Observed phenomena include pressure balancing between large and small pores/throats, pressure fluctuation, and emulsification transporting. It has been noted that the advancing front of the moving SMD system would assume a fan like shape, with a zone of dilution and dispersion occurring along the edge, and periodical break though would take place within the low permeability layers. With the clay colloid system, oil/gas mobility ratio and sweep efficiency can be effectively improved. By modifying the formula of SMD system, it can be used to formations of different permeability.

关 键 词：粘土胶 驱油机理 渗流 扩散规律 实验研究会 三次采油 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]