Research on the change rule of microbial community in the microbial flooding process of Baolige oilfield

Guan Wang, Lisha Duan, Feng Han, Rui Wang, Shasha Liu, Xiaoyang Lei, Jizhe Jing, Yi Gu, Yuchao Lei
2020 IOP Conference Series: Materials Science and Engineering  
In Baolige oilfield, through the research and field implementation of microbial flooding technology, some application effects had been achieved. In order to further improve the implementation effect, the microbial community in the produced liquid during microflooding was tracked, monitored and analyzed by high-throughput sequencing (NGS). The results showed that the microflora diversity was plentiful. The species diversity after micro-flooding was higher than that during micro-flooding. In
more » ... o-flooding. In microbial flooding stage, due to replenish nutrients and exogenous bacteria to reservoir, the advantage bacteria group was mainly Pseudomonas, Acinetobacter, Thauera and Wallingella. After the microbial flooding, due to stop supplying nutrients, the bacteria community changed. The relative abundance of hydrocarbon-degrading bacteria declined and that of anaerobic aerogen increased.
doi:10.1088/1757-899x/729/1/012040 fatcat:cal2kxpm5ffl7mitgsvilv6nuu