Different Diversity and Distribution of Archaeal Community in the Aqueous and Oil Phases of Production Fluid From High-Temperature Petroleum Reservoirs

Frontiers in Microbiology
Bo LiangBo-Zhong Mu

Abstract

To get a better knowledge on how archaeal communities differ between the oil and aqueous phases and whether environmental factors promote substantial differences on microbial distributions among production wells, we analyzed archaeal communities in oil and aqueous phases from four high-temperature petroleum reservoirs (55-65°C) by using 16S rRNA gene based 454 pyrosequencing. Obvious dissimilarity of the archaeal composition between aqueous and oil phases in each independent production wells was observed, especially in production wells with higher water cut, and diversity in the oil phase was much higher than that in the corresponding aqueous phase. Statistical analysis further showed that archaeal communities in oil phases from different petroleum reservoirs tended to be more similar, but those in aqueous phases were the opposite. In the high-temperature ecosystems, temperature as an environmental factor could have significantly affected archaeal distribution, and archaeal diversity raised with the increase of temperature (p < 0.05). Our results suggest that to get a comprehensive understanding of petroleum reservoirs microbial information both in aqueous and oil phases should be taken into consideration. The microscopic habit...Continue Reading

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Citations

Dec 22, 2019·Applied Microbiology and Biotechnology·Sandeep RellegadlaAkhil Agrawal

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Datasets Mentioned

BETA
SRA096386

Methods Mentioned

BETA
electrophoresis
PCR
PCA

Software Mentioned

VEGAN
alpha
mothur
R
UCLUST
R package VennDiagram
diversity
Quantitative Insights into Microbial Ecology ( QIIME ) pipeline
PerMANOVA
UCHIME

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