期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：186
期号：4
页码：012015
DOI：10.1088/1755-1315/186/4/012015
语种：English
出版社：IOP Publishing
摘要：In order to solve the problems of oil wells in ZJ53 well area of Wuliwan oilfield, such as premature water breakthrough, rapid rise in water cut, obvious plane conflict, low reserve utilization degree and the difficulty in tapping remaining oil with conventional treatment methods, the laboratory experiment and field test of air foam flooding were performed. The results of laboratory experiment of air foam flooding revealed that the crude oil in Wuliwan oilfield was able to effectively consume oxygen in low temperature oxidation reaction. When the gas/liquid ratio was 1:1~5:1, the oxidation rate was 0.5~6.252×10-5mol O2/hr-ml[oil]. After low temperature oxidation reaction, the viscosity of crude oil and the number of long carbon chains increased, but the main peak carbon of crude oil remained unchanged, which was still C10. The foam system with foaming agent of AES and foam stabilizer of HPAM had good foam performance. In the oil displacement experiment of sand pack, when the water cut was close to 100%, the recovery factor could reach 52.8% after water flooding, then it could enhance by 7.4% and 4.9% through foam flooding and subsequent water flooding, respectively. The field test of the ZJ53 well block in Wuliwan District 1 oilfield showed that air foam flooding was able to significantly increase the water absorption thickness of single well, enhance reserve utilization degree of water flooding and improve development effect.
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