在考察了胜利油田S12块注入水和油井产出水中细菌群落状况的基础上,针对烃类降解菌、产甲烷菌、硝酸盐还原菌等有益于采油的细菌群落,研究了营养条件对细菌群落激活的影响。结果表明,激活剂配方St 12能较好地刺激有益内源菌群落的生长,且对硫酸盐还原菌、铁细菌及硫细菌等对采油不利的细菌起到了一定的抑制作用。室内岩心模拟试验表明,在水驱基础上内源微生物驱可以提高采收率最高达9.14%。 On the basis of investigation of the bacterial communities in injection water and oil well production water in Block S12 of Shengli Oilfield, the bacterial communities beneficial to oil recovery such as hydrocarbon-degrading bacteria, methanogenic bacteria and nitrate-reducing bacteria were studied, and the effects of nutrient conditions on bacterial community Impact of activation. The results showed that the activator formulation St 12 could stimulate the growth of beneficial endogenous bacterial community well, and inhibited the bacterium such as sulfate-reducing bacteria, iron bacteria and sulfur bacteria which were unfavorable for oil recovery. Laboratory core simulation tests show that endogenous microbial flooding can increase oil recovery up to 9.14% based on waterflooding.