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首页> 外文期刊>Applied Microbiology and Biotechnology >Microbial community dynamics in Baolige oilfield during MEOR treatment, revealed by Illumina MiSeq sequencing
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Microbial community dynamics in Baolige oilfield during MEOR treatment, revealed by Illumina MiSeq sequencing

机译：Illumina MiSeq测序揭示了宝力格油田MEOR处理过程中的微生物群落动态

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摘要

This study was carried out to understand microbial diversity and function in the microbial enhanced oil recovery (MEOR) process and to assess the impact of MEOR treatment on the microbial community in an oil reservoir. The Illumina MiSeq-based method was used to investigate the structure and dynamics of the microbial community in a MEOR-treated block of the Baolige oilfield, China. The results showed that microbial diversity was high and that 23 phyla occurred in the analyzed samples. Proteobacteria, Firmicutes, Bacteroidetes, Thermotogae, and Euryarchaeota were present in relatively high abundance in all analyzed samples. Injection of bacteria and nutrients resulted in interesting changes in the composition of the microbial community. During MEOR treatment, the community was dominated by the known hydrocarbon-utilizing genera Pseudomonas and Acinetobacter. After the treatment, the two genera decreased in abundance over time while Methanobacteriaceae, as well as known syntrophic genera such as Syntrophomonas, Pelotomaculum, Desulfotomaculum, and Thermacetogenium gradually increased. The change in dominant microbial populations indicated the presence of a succession of microbial communities over time, and the hydrocarbon degradation and syntrophic oxidation of acetate and propionate to methane in the MEOR-treated oilfield. This work contributes to a better understanding of microbial processes in oil reservoirs and helps to optimize MEOR technology.
机译：进行这项研究是为了了解微生物多样性和微生物在提高石油采收率（MEOR）过程中的功能，并评估MEOR处理对油藏中微生物群落的影响。基于Illumina MiSeq的方法用于研究中国宝力格油田经MEOR处理的区块中微生物群落的结构和动力学。结果表明，微生物多样性高，在所分析的样品中有23个门。在所有分析的样品中，变形杆菌，硬毛菌，拟杆菌，嗜热菌和真细菌的含量都很高。细菌和营养物质的注入导致微生物群落组成发生有趣的变化。在进行MEOR治疗期间，该社区被已知的利用碳氢化合物的假单胞菌属和不动杆菌属所支配。处理后，两个属随时间推移而减少，而甲烷杆菌科以及已知的同养属（如同食肉单胞菌，肉食菌，脱硫母球菌和嗜热产热菌）逐渐增加。优势微生物种群的变化表明，随着时间的推移，存在一系列微生物群落，并且在MEOR处理过的油田中，烃类降解以及乙酸盐和丙酸盐的甲烷氧化降解为甲烷。这项工作有助于更好地了解油藏中的微生物过程，并有助于优化MEOR技术。

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