In CO2 foam flooding progress, foams formed by CO2 and surfactant solution can reduce the fluidity of CO2, improve sweep efficiency and flow behavior of CO2 in heterogeneous oil reservoir, prevent fingering and channeling and improve recovery efficiency. However, the study on the CO2 foam flooding characteristics is still in the initial stage, this paper focused on experimental testing the CO2 foam fluid flooding characteristics. Factors affecting the foam flooding efficiency, such as surfactant concentration, foam quality, injection method and core permeability, were studied in more detail in the paper, and influencing laws of factors on flooding efficiency and recovery efficiency were analyzed, moreover, based on experiments, the optimum foam quality and injection method, which have a practical and theoretical significance to the engineering application, were obtained.
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[1]
YX Song, YX Zhou, WM Zhang. Application of foam fluid in oilfield [J]. Foreign oilfield engineering, 1997, 13(1): 5-8.
Google Scholar
[2]
FM Orr, JP Heller, JJ Taber. Carbon dioxide flooding for enhanced oil recovery: promise and problems [J]. Journal of the American Oil Chemists' Society, 1982, 59(10): 810A-817A.
DOI: 10.1007/bf02634446
Google Scholar
[3]
J Ni.Experimental study and oilfield application of self-foaming fluid [D].Nanchong: Southwest Petroleum University, (2002).
Google Scholar
[4]
LY Chen.Theory and practices of foam and foam drilling technology [D].Chengdu: Chengdu University of Technology, 2004.
Google Scholar
[5]
JJ Yang. Study on the foam polymer enhance system [D]. Nanchong: Southwest Petroleum University, (2002).
Google Scholar
[6]
YZ Nie. Experimental study and application of foam fluid rheological properties[D]. Jilin: Jilin University, (2004).
Google Scholar
[7]
PW Fischer, LW Holm, DS Pye. Carbon dioxide foam flooding: Canada, 1102540[P]. 1981-06-09.
Google Scholar
[8]
SH Chang, RB Grigg. Effects of foam quality and flow rate on CO2-foam behavior at reservoir temperature and pressure [J]. SPE Reservoir Evaluation & Engineering, 1999, 2(3): 248-254.
DOI: 10.2118/56856-pa
Google Scholar
[9]
D Du, P Zitha, M Uijttenhout. Carbon dioxide foam rheology in porous media: A CT scan study [J]. SPE Journal, 2007, 12(2): 245-252.
DOI: 10.2118/97552-pa
Google Scholar