摘要
从油井产出水中分离得到一株兼性厌氧芽孢杆菌TP-1,该菌株可在55℃的油藏温度生长,并代谢产生粘性多糖和气体。经培养条件优化,发酵液多糖产量可达5.5g/L,产气量为22mL/L。低浓度的CaCl2、MgSO4和AlCl3对多糖的生成有促进作用。岩芯模拟试验表明,该菌的注入可使岩芯压力增加,提高石油采收率7.37%。TP-1是一株性能良好的油藏调剖菌。
A facultative anaerobic bacterium. Bacillus TP-1 isolated from oil field wastewater could produce viscous polysaccharide and gas under oil reservoir condition at 55℃.The polysaccharide can produced 5.5 g/L and the output of gas was 22 mL/L. The viscous polysaccharide production was favorable in the lower concentration of CaCl2, MgSO4 and AlCl3. The results of core simulated tests showed that pressure was increased and oil recovery was enhanced by 7.37% after the bacteria injection, TP-1 strain has most of the desirable properties for microbial profile modification.
出处
《微生物学通报》
CAS
CSCD
北大核心
2008年第4期491-495,共5页
Microbiology China
基金
国家自然科学基金(No.50674058)
关键词
芽孢杆菌
多糖
微生物调剖
岩芯模拟
Bacillus sp., Polvsaccharide. Microbial nrofile modification. Core simulated test
