Degradation of hydrocarbons by indigenous microbial communities from two adjacent oil production wells in one block

Haijun Liu, Jun Yao*, Zhimin Yuan, Huilun Chen, Fei Wang, Kanaji Masakorala, Martin M F CHOI

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

1 Citation (Scopus)

Abstract

Aerobic acclimatization cultures of oil production water from two adjacent oil production wells (Xi15-14 and Xi51-5) in one block of Dagang oilfield were generated depending on crude oil as the sole carbon source and energy. Both cultures revealed a high degrading efficiency for a wide range of hydrocarbons, but degradation trend were striking different, and surface tension of two phases of oil and water decreased from 60 to 30 mN/m approximately by virtue of indigenous microbial metabolic activities. Meanwhile, cultured indigenous bacteria of wellXi15-14 mainly included Hydrocarboniphaga, Pseudomonas, and Ectothiorhodospiraceae bacterium, while wellXi51-5 contained Sphingomonas and Pseudomonas. Furthermore, abundance of alkane hydroxylase genes alk B and alk M from the two samples also showed an apparent difference. These findings are important that microbial diversity tightly tallies with the fact of a highly compartmentalized stratigraphy of this oilfield, suggesting that it is better to recover oil from extreme reservoirs with the targeted stimulating indigenous microorganisms.

Original languageEnglish
Pages (from-to)3423-3434
Number of pages12
JournalEnergy Sources, Part A: Recovery, Utilization and Environmental Effects
Volume38
Issue number23
DOIs
Publication statusPublished - 1 Dec 2016

Scopus Subject Areas

  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology

User-Defined Keywords

  • Degradation
  • indigenous microorganism
  • MEOR
  • microbial diversity
  • oil production water

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