Open AccessResearch on the change rule of microbial community in the microbial flooding process of Baolige oilfield
Author(s) -
Guan Wang,
Lisha Duan,
Feng Han,
Rui Wang,
Shasha Li,
Xiaoyang Lei,
Jizhe Jing,
Yi Gu,
Yuchao Lei
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/729/1/012040
Subject(s) - microbial population biology , flooding (psychology) , nutrient , bacteria , acinetobacter , biology , microbial ecology , environmental science , ecology , psychology , genetics , psychotherapist
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 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.