【摘要】 针对大港油田官69断块的油藏条件和流体特性选育出高温细菌N80,在缺氧条件下对菌的生长代谢和改善原油性质等方面进行了评价,在油藏温度(73℃)条件下用人造均质岩芯进行的物理模拟驱油实验表明,微生物驱较水驱提高石油采收率6.6％,在官69-19井进行的吞吐处理试验表明,产出液菌浓较处理前升高了2个数量级,共增产原油401吨,油中的石蜡和胶质沥青含量均有下降,证明N80菌适应地层条件,具有增采和改善原油性质的作用。更多还原

【Abstract】 Thermophilic bacteria, N80 is screened from Guan 69 fault block of Dagang oil field. The screening condition is conformed with reservoir condition and fluid characteristic. Evaluated parameter in oxygen deficiency is bacterial growth and metabolism and improving oil property capability. At reservoir temperature 73℃ artificial homogeneous core displacement experiment result is that microbial enhanced oil recovery is 6.6% higher than water flooding’s. After treating individial well Guan 69-19, bacterial concentration of production of produced liquid increased by 102,additional oil production is 401 ton,paraffin gum and arphalt content of crude oil is decreased.更多还原