指进、剩余油形成与分布的物理模拟  

PHYSICAL SIMULATION FOR FORMATION AND DISTRIBUTION OF FINGERING AND REMAINING OIL.

作　　者：朱九成[1] 郎兆新[1] 黄延章[1] 

机构地区：[1]中国石油天然气总公司国际合作局勘探开发部

出　　处：《新疆石油地质》1998年第2期154-158,共5页Xinjiang Petroleum Geology

基　　金：国家自然科学基金

摘　　要：在所建立的渗流平面物理模拟实验装置上，进行了不同油水粘度比，不同驱替速度下的水驱油实验。分析了指进、剩余油形成规律及对采出程度的影响。首次提出由于指进发育造成注入端及排液端附近的剩余油开采潜力，阐述了开采速度对采出程度影响的临界特性、回流现象、不规则渗流场中指进的自相似性，出口端油流量的波动等。对相关的剩余油开采措施及在生产中提高采出程度提出了一些新的建议。Wateroil displacment experiments with various viscosity and displacing rates are performed on plain percolation model. Origination of fingering and remaining oil as well as their influnce on recovery percent are analyzed. The potential of exploiting remaining oil in areas around inlets and outlets is first proposed, furthermore, the factors of production rate influnce on recovery percent, such as critical characteristics, backflow phenomena, self similarity of fingering in irregular percolation field and fluctuation of oil flow at outlets are clarified. Recovery strategy for remaining oil and methods to reduce remaining oil during production are presented.

关 键 词：渗流 剩余油 指进 收采率 驱替试验 物理模拟 

分 类 号：TE349[石油与天然气工程—油气田开发工程] TE357