浅层致密砂岩储层岩心水驱油及相渗特征——以鄂尔多斯盆地A油田长3油层组为例  

Characteristics of Water-drive Oil and Relative Permeability Curve in Tight Sandstone Reservoir Cores in Shallow Layer——By Taking Chang 3 Reservoir of A Oilfield in Ordos Basin for Example

作　　者：王国壮 王永钢 杜一帆 李金池 李航航 王昊 Wang Guozhuang;Wang Yonggang;Du Yifan;LI Jinchi;LI Hanghang;Wang Hao(Research Institute of Exploration and Development,North China Company,SINOPEC,Zhengzhou 450006,Henan;Research Institute of Shaanxi Yanchang Petroleum(Group)Co.Ltd.,Xi’an 710075,Shaanxi;College of Geosciences,China University of Petroleum(Beijing),Beijing 102249;School of Geosciences,Yangtze University,Wuhan 430100,Hubei;College of Petroleum Engineering,Xi’an Shiyou University,Xi’an 710065,Shaanxi)

机构地区：[1]中石化华北油气分公司勘探开发研究院,河南郑州450006 [2]陕西延长石油(集团)有限责任公司研究院,陕西西安710075 [3]中国石油大学(北京)地球科学学院,北京102249 [4]长江大学地球科学学院,湖北武汉430100 [5]西安石油大学石油工程学院,陕西西安710065

出　　处：《长江大学学报（自然科学版）》2019年第12期37-41,共5页Journal of Yangtze University(Natural Science Edition)

基　　金：陕西省教育厅重点项目(18JS084);陕西省高校科协青年人才托举计划项目(20180703)

摘　　要：鄂尔多斯盆地A油田长3油层组为典型的浅层致密砂岩储层,通过岩心水驱油试验分析研究了储层岩心水驱油特征和相对渗透率曲线特征.研究发现,当注入倍数在较小范围时(一般为0.1~1PV),随着注入倍数的增加,驱油效率和含水率增加较快,增加幅度也较高;当注入倍数大于1PV时,再增加注入倍数,驱油效率和含水率增加幅度不大.相对渗透率曲线中等渗点处相渗透率总体较低,束缚水饱和度、残余油饱和度均较高.储层水相相对渗透率偏低,水驱采油效率较低.Chang 3 Reservoir in A Oilfield of Ordos Basin is a typical shallow tight sandstone reservoir.The characteristics of reservoir water drive oil and relative permeability curve are studied through the experiment of the rock core water flooding experiment.The results show that for the water flooding experiment,when the injection ratio is in a small range(generally 0.1 to 1.0PV),with the increase of injection multiple,the oil displacement efficiency and water content increase faster,and the increase amplitude is also higher.When the injection multiple is more than 1 PV,the increase of injection ratio is not significant increase the oil displacement efficiency and water content.The relative permeability at the isotonic point in the relative permeability curve is generally lower,and the irreducible water saturation and residual oil saturation are higher the reservoir K rw(S or)is low,and the water flooding efficiency is low.

关 键 词：浅层致密砂岩 水驱油特征 相对渗透率曲线 

分 类 号：TE357[石油与天然气工程—油气田开发工程]