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Zhu F, Wei Y, Wang F, Xia Z, Gou M, Tang Y. Enrichment of microbial consortia for MEOR in crude oil phase of reservoir-produced liquid and their response to environmental disturbance. Int Microbiol 2024; 27:1049-1062. [PMID: 38010566 DOI: 10.1007/s10123-023-00458-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 11/07/2023] [Accepted: 11/17/2023] [Indexed: 11/29/2023]
Abstract
Developing microbial consortiums is necessary for microbial enhanced oil recovery (MEOR) in heavy crude oil production. The aqueous phase of produced fluid has long been considered an ideal source of microorganisms for MEOR. However, it is recently found that rich microorganisms (including hydrocarbon-degrading bacteria) are present in the crude oil phase, which is completely different from the aqueous phase of produced fluid. So, in this study, the microbial consortia from the crude oil phase of produced fluids derived from four wells were enriched, respectively. The microbial community structure during passage was dynamically tracked, and the response of enriched consortia to successive disturbance of environmental factors was investigated. The results showed the crude oil phase had high microbial diversity, and the original microbial community structure from four wells was significantly different. After ten generations of consecutive enrichment, different genera were observed in the four enriched microbial consortia, namely, Geobacillus, Bacillus, Brevibacillus, Chelativorans, Ureibacillus, and Ornithinicoccus. In addition, two enriched consortia (eG1614 and eP30) exhibited robustness to temperature and oxygen perturbations. These results further suggested that the crude oil phase of produced fluids can serve as a potential microbial source for MEOR.
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Affiliation(s)
- Fangfang Zhu
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1 First Ring Road, Chengdu, 610065, Sichuan Province, China
| | - Yanfeng Wei
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1 First Ring Road, Chengdu, 610065, Sichuan Province, China
| | - Fangzhou Wang
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1 First Ring Road, Chengdu, 610065, Sichuan Province, China
| | - Ziyuan Xia
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1 First Ring Road, Chengdu, 610065, Sichuan Province, China
| | - Min Gou
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1 First Ring Road, Chengdu, 610065, Sichuan Province, China.
| | - Yueqin Tang
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1 First Ring Road, Chengdu, 610065, Sichuan Province, China
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Yang Z, Zhihua G, Wu J, Fang S, Zhang H, Miaoxin Z. Study on Numerical Simulation for Component Transportation and Oil Displacement of a Microbial System. ACS OMEGA 2021; 6:16507-16516. [PMID: 34235322 PMCID: PMC8246491 DOI: 10.1021/acsomega.1c01667] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Accepted: 06/03/2021] [Indexed: 06/13/2023]
Abstract
Component transportation is one of the main mechanisms for numerical simulation in microbial oil recovery. However, the research on the component transportation considering the inhibition of metabolites is very limited. A mathematical model of oil displacement in a microorganism system including microbial growth and metabolism equation, component transport equation, and porous media physical property variation equation was established in this paper. The equation was discretized and solved by implicit pressure and explicit saturation. The MATLAB simulation results showed that the chromatographic separation between microorganisms and nutrients happened because of the adsorption of porous media and the activity of microorganisms during the transportation, and the separation degree of the chromatography became higher as the permeability became lower and the injection speed became slower. The multislug alternative injection mode could reduce the degree of chromatographic separation, and the recovery rate can be increased to 50.82%. The results of this study could provide theoretical guidance for the popularization and application of microbial enhanced oil recovery (MEOR).
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Affiliation(s)
- Zhao Yang
- Laboratory
of Enhanced Oil Recovery of Education Ministry, Northeast Petroleum University, 163318 Daqing, China
| | - Guo Zhihua
- College
of Geo-science, Northeast Petroleum University, 163318 Daqing, China
| | - Jingchun Wu
- Laboratory
of Enhanced Oil Recovery of Education Ministry, Northeast Petroleum University, 163318 Daqing, China
| | - Shi Fang
- Laboratory
of Enhanced Oil Recovery of Education Ministry, Northeast Petroleum University, 163318 Daqing, China
| | - Hanwen Zhang
- No.
1 Chemical Production Department of Daqing Refining and Chemical Company, 163318 Daqing, China
| | - Zhang Miaoxin
- Laboratory
of Enhanced Oil Recovery of Education Ministry, Northeast Petroleum University, 163318 Daqing, China
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Gao P, Li G, Li Y, Li Y, Tian H, Wang Y, Zhou J, Ma T. An Exogenous Surfactant-Producing Bacillus subtilis Facilitates Indigenous Microbial Enhanced Oil Recovery. Front Microbiol 2016; 7:186. [PMID: 26925051 PMCID: PMC4757698 DOI: 10.3389/fmicb.2016.00186] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Accepted: 02/03/2016] [Indexed: 12/03/2022] Open
Abstract
This study used an exogenous lipopeptide-producing Bacillus subtilis to strengthen the indigenous microbial enhanced oil recovery (IMEOR) process in a water-flooded reservoir in the laboratory. The microbial processes and driving mechanisms were investigated in terms of the changes in oil properties and the interplay between the exogenous B. subtilis and indigenous microbial populations. The exogenous B. subtilis is a lipopeptide producer, with a short growth cycle and no oil-degrading ability. The B. subtilis facilitates the IMEOR process through improving oil emulsification and accelerating microbial growth with oil as the carbon source. Microbial community studies using quantitative PCR and high-throughput sequencing revealed that the exogenous B. subtilis could live together with reservoir microbial populations, and did not exert an observable inhibitory effect on the indigenous microbial populations during nutrient stimulation. Core-flooding tests showed that the combined exogenous and indigenous microbial flooding increased oil displacement efficiency by 16.71%, compared with 7.59% in the control where only nutrients were added, demonstrating the application potential in enhanced oil recovery in water-flooded reservoirs, in particular, for reservoirs where IMEOR treatment cannot effectively improve oil recovery.
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Affiliation(s)
- Peike Gao
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, College of Life Sciences, Nankai University Tianjin, China
| | - Guoqiang Li
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, College of Life Sciences, Nankai University Tianjin, China
| | - Yanshu Li
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, College of Life Sciences, Nankai University Tianjin, China
| | - Yan Li
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, College of Life Sciences, Nankai University Tianjin, China
| | - Huimei Tian
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, College of Life Sciences, Nankai University Tianjin, China
| | - Yansen Wang
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, College of Life Sciences, Nankai University Tianjin, China
| | - Jiefang Zhou
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, College of Life Sciences, Nankai University Tianjin, China
| | - Ting Ma
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, College of Life Sciences, Nankai University Tianjin, China
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You J, Wu G, Ren F, Chang Q, Yu B, Xue Y, Mu B. Microbial community dynamics in Baolige oilfield during MEOR treatment, revealed by Illumina MiSeq sequencing. Appl Microbiol Biotechnol 2015; 100:1469-1478. [PMID: 26496917 DOI: 10.1007/s00253-015-7073-4] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 10/03/2015] [Accepted: 10/07/2015] [Indexed: 10/22/2022]
Abstract
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.
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Affiliation(s)
- Jing You
- Petroleum Production Engineering Institute of Huabei Oilfield Ltd, Renqiu, 062552, China.,School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Gang Wu
- Petroleum Production Engineering Institute of Huabei Oilfield Ltd, Renqiu, 062552, China
| | - Fuping Ren
- Petroleum Production Engineering Institute of Huabei Oilfield Ltd, Renqiu, 062552, China
| | - Qi Chang
- Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Bo Yu
- Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China.
| | - Yanfen Xue
- Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Bozhong Mu
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China.
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