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.
出处
《地质论评》
CAS
CSCD
北大核心
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。
关键词
油气运移
粘土矿物
核磁共振
Oil Migration
Clay
NMR（Nuclear Magnet Resonance）
Saturation
