MINERAL FIELD EXPERIMENTS ON MICROBIAL ENHANCED OIL RECOVERY OF HEAVY OIL IN XINJIANG OIL FIELD
新疆油田稠油微生物开采矿场试验研究

To improve the recovery ratio of oil and the production benefits of heavy oil reservoirs,Southwest Petroleum Institute and Xinjiang Oil Field cooperated to carry out the mineral field experiments of microbial enhanced oil recovery(MEOR) for heavy oil.In the experiments working bacteria or petroleum bacteria from different places were chose,and the mode of production was individual well injectingextracting.There were 21 product wells of heavy oil in the two times.Through the influence of working bacteria,the viscosities of heavy oil were decreased greatly.With little or no hot vapor,most test wells had reached for economic productivity.High products / investments ratio had been got in the experiments.According to the results of the experiments,the working bacteria selected can obviously degrade heavy oil rich gum and asphaltene.And the mineral field experiments have many advantages,such as little investment,fast returning,greatly profits and so on.Practices have proved that MEOR of heavy oil is worth applying and generalizing in Xinjiang Oil Field.