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《Natural Gas Geoscience》 2008-03
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Pilot Test on CO_2 Flooding in Extralow Permeability Fuyu Oil Layer in Daqing Placanticline

CHENG Jiecheng1,LEI Youzhong1,ZHU Weiyao2(1.Daqing Oilfield Co.,Ltd,PetroChina,Daqing 163453,China; 2.Civil and Environmental Engineering School,University of Science Technology Beijing,Beijing 100083,China)  
The Oil reserves of about 3.7×108 t cannot be economically developed by the conventional waterflooding in the Daqing placanticline.To seek for a feasible development method for extralow permeability oil layers,this article studies the CO2 drive using laboratory experiments and numerical simulation.Based on the experiment results of porous flow law and phase behavior,the CO2 injection pattern is established.Immiscible displacement conditions for CO2 drive are presented.Pilot tests were carried out in five wells in the Fang 48 block of the Daqing oil field.The CO2 drive got success in enhancing oil recovery in the extralow permeability oil field.
【Fund】: 国家自然科学基金项目(编号:10772023);; 国家重点基础研究发展计划(编号:2007CB209500)联合资助
【CateGory Index】: TE357.4
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