Pilot Test on CO2 Flooding in Extra-low Permeability Fuyu Oil Layer in Daqing Placanticline
Received date: 2007-06-13
Revised date: 2008-04-13
Online published: 2008-06-10
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 extra\|low 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 extra-low permeability oil field.
CHENG Jie-cheng ;LEI You-zhong ;ZHU Wei-yao . Pilot Test on CO2 Flooding in Extra-low Permeability Fuyu Oil Layer in Daqing Placanticline[J]. Natural Gas Geoscience, 2008 , 19(3) : 402 -409 . DOI: 10.11764/j.issn.1672-1926.2008.03.402
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