ZHANG Han-shi, DUAN Chuan-hui, GAO Guang-jun, CHENG Hai-ying, WANG Jing, ZHANG Qian-qian. Performance evaluation of a thermophilic MEOR strain[J]. Oil Drilling & Production Technology, 2006, 28(2): 46-48,51. DOI: 10.3969/j.issn.1000-7393.2006.02.014
Citation: ZHANG Han-shi, DUAN Chuan-hui, GAO Guang-jun, CHENG Hai-ying, WANG Jing, ZHANG Qian-qian. Performance evaluation of a thermophilic MEOR strain[J]. Oil Drilling & Production Technology, 2006, 28(2): 46-48,51. DOI: 10.3969/j.issn.1000-7393.2006.02.014
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Performance evaluation of a thermophilic MEOR strain

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  • A thermophilic bacterium of NA-3 was isolated from produced fluid in Shengli oilfield,and identified that it was a member of Bacillus sp.The NA-3 is Gram-positive,rod-shaped in(0.5-(0.8)μm×(1.4)-2.5)μm,facultative anaerobe and motive.The optimum growth temperature is 70 ℃,pH is 7.0.salinity resist is 10 g/L.NA-3 could reduce nutritive fluid surface tension from 72 mN/m to 34 mN/m,pH from(7.0) to 5.2.Experiment shows that NA-3 can enhance the oil recovery to 11-15 percent,and it has great potential application in microbial enhanced oil recovery.
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