Regulation of microbial growth and metabolism and oil displacement under different gas distribution conditions

Oxygen is the key factor affecting growth and metabolism of microorganisms; hence, the influence of gas distribution on microbial growth and metabolism and oil displacement effect must be clarified before implementing microbial oil displacement in the field. In this study, the oxygen requirement for microbial growth and metabolism was determined, and a variety of gas distribution experiments were designed. Under different gas distribution conditions, the microbial growth state was determined using the oxidation-reduction potential, and microbial community structure characteristics were analyzed using high-throughput sequencing. Differences in the composition of the microbial community were found under different liquid–gas ratios. However, when the incubation time was increased (30 days), the composition of the microbial community under different liquid–gas ratios remained consistent because of oxygen consumption. Analysis of microbial community structure characteristics revealed six types of functional bacteria, and these accounted for > 70% of the community. The physical simulation experiment showed that the optimal displacement efficiency was 11.08%, when the liquid–gas ratio was 1:5. This study provides a reference for implementation of microbial oil displacement in the field.

• Publication year

  2017

• Venue

  Chinese Journal of Applied and Environmental Biology

• Publication date

  2017-12-01

• Fields of study

  Not labeled

• Identifiers
  DOI 10.3724/sp.j.1145.2016.12036
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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