核磁共振成像技术定量分析粘土矿物对油气二次运移过程的影响  

The Quantitative Analysis of the Effect of Clay Matters on Secondary Oil Migration in Nuclear Magnet Resonance Technology

作　　者：周波[1,2] 罗晓容[3] 王毅[1] 

机构地区：[1]中石化石油勘探开发研究院勘探所 [2]中国地质大学(北京),资源学院,100083 [3]中国科学院地质与地球物理研究所,油气运移重点实验室

出　　处：《地质论评》2007年第5期704-707,730,共5页Geological Review

基　　金：国家"973"重点基础研究发展规划项目(编号G1999043310)的成果。

摘　　要：本文利用核磁共振成像技术定量分析油气运移含油饱和度变化,首次获得了玻璃珠孔隙介质中粘土矿物(伊利石)含量变化时油饱和度变化的规律,通过对实验数据的总结,得到以下结论:①油气运移通道具有不均一性,但随着粘土含量的增加,油气运移通道上残余油饱和度增加,初始部分(指实验中油未发生运移时油占据的部分)残余油的含油饱和度亦增加;②由于初始部分残余油饱和度和运移通道上的残余油饱和度都变大。因此,粘土矿物的存在,使得残余油饱和度增加,最终降低了油气聚集的效率,不利于油气运移聚集。In this article the Nuclear Magnet Resonance （NMR） image technology is applied to analyze the oil saturation in the secondary oil migration process. It is the first time that the oil saturation variation are observed when the clay matter exists in the glass beads porous media. Based on the experiment data, it is concluded that： （1） the secondary oil migration pathway is inhomogeneous and the oil saturation increase with the content of the clay. At the same time the remain oil in the original oil column increases. （2） Because the remain oil increase both in pathway and in original oil column, it is obvious that the clay, which exist in the glass beads, make the remain oil increases. This decrease the oil migration efficiency and is harm to the oil accumulation.

关 键 词：油气运移 粘土矿物 核磁共振 

分 类 号：P618.13[天文地球—矿床学]