Journal cover Journal topic
Biogeosciences An interactive open-access journal of the European Geosciences Union
Journal topic
Volume 12, issue 11
Biogeosciences, 12, 3403-3414, 2015
https://doi.org/10.5194/bg-12-3403-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Biogeosciences, 12, 3403-3414, 2015
https://doi.org/10.5194/bg-12-3403-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 05 Jun 2015

Research article | 05 Jun 2015

Differences in microbial community composition between injection and production water samples of water flooding petroleum reservoirs

P. K. Gao1,2, G. Q. Li1,2, H. M. Tian1,2, Y. S. Wang1,2, H. W. Sun3, and T. Ma1,2 P. K. Gao et al.
  • 1Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Tianjin 300071, China
  • 2College of Life Sciences, Nankai University, Tianjin 300071, China
  • 3College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China

Abstract. Microbial communities in injected water are expected to have significant influence on those of reservoir strata in long-term water flooding petroleum reservoirs. To investigate the similarities and differences in microbial communities in injected water and reservoir strata, high-throughput sequencing of microbial partial 16S rRNA of the water samples collected from the wellhead and downhole of injection wells, and from production wells in a homogeneous sandstone reservoir and a heterogeneous conglomerate reservoir were performed. The results indicate that a small number of microbial populations are shared between the water samples from the injection and production wells in the sandstone reservoir, whereas a large number of microbial populations are shared in the conglomerate reservoir. The bacterial and archaeal communities in the reservoir strata have high concentrations, which are similar to those in the injected water. However, microbial population abundance exhibited large differences between the water samples from the injection and production wells. The number of shared populations reflects the influence of microbial communities in injected water on those in reservoir strata to some extent, and show strong association with the unique variation of reservoir environments.

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Microbial communities in injected water are expected to have a significant influence on those of reservoir strata in long-term water-flooding petroleum reservoirs. We thereby investigated the similarities and differences in microbial communities in water samples collected from the wellhead and downhole of injection wells, and from production wells in a homogeneous reservoir and a heterogeneous reservoir using high-throughput sequencing.
Microbial communities in injected water are expected to have a significant influence on those of...
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