中文摘要：

为了确定克拉玛依油田93号油井内源微生物采油最佳激活剂配方,采用响应面法结合原油降解率及降黏率指标研究了可溶性淀粉、硝酸钾、磷酸氢二钾质量浓度对内源微生物采油效果的影响。结果表明,3个因素对内源微生物采油效果均有显著影响,回归模型很好地反映出各因素水平与响应值之间的关系,同时得出最佳激活剂配方：可溶性淀粉10.9 g/L,硝酸钾3.2 g/L,磷酸氢二钾0.9 g/L,此时原油降解率及降黏率的预测值为65.04%、42.03%;实际测得原油降解率及降黏率为69.27%、45.17%,误差仅为4.23%及3.14%。说明采用响应面法筛选出的激活剂配方具有很高的可靠性,为进一步开展现场应用提供了依据。

英文摘要：

In order to select optimal activator formula for indigenous microbial enhanced oil recovery in Well 93# of Karamay oilfield,the influence of soluble starch concentration,KNO3 concentration,and K2HPO4 concentration on indigenous microorganisms enhance oil recovery has been researched by adopting response surface methodology combined with crude oil degradability and viscosity decreasing index.The results show that the three factors all have significant adverse effect on indigenous microbial enhanced oil recovery,and the relationship between every material level and response value was well illustrated by the regression model.At the same time,the optimal activator formula were as following： soluble starch concentration was 10.9 g/L,KNO3 concentration was 3.2 g/L,and K2HPO4 concentration was 0.9 g/L.Under this condition,the predicted crude oil degeneration rate and viscosity degeneration rate was 65.04% and 42.03%,respectively;whereas the experimental value was 69.27% and 45.17%,which means the error was only 4.23% and 3.14%.The activator formula selected by response surface methodology was very credible,which provide reference for further field application research.