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Dong H, Yu L, Xu T, Liu Y, Fu J, He Y, Gao J, Wang J, Sun S, She Y, Zhang F. Cultivation and biogeochemical analyses reveal insights into biomineralization caused by piezotolerant iron-reducing bacteria from petroleum reservoirs and their application in MEOR. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 903:166465. [PMID: 37619717 DOI: 10.1016/j.scitotenv.2023.166465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 08/19/2023] [Accepted: 08/19/2023] [Indexed: 08/26/2023]
Abstract
Interactions between minerals and iron-reducing bacteria under in-situ pressure and temperature conditions play important roles in oil extraction, residual oil methanation, and CO2 storage in petroleum reservoirs. However, the impacts of pressure on dissimilatory iron-reducing bacteria (DIRB) are poorly understood. Herein, the interactions between clay minerals and microbes under elevated hydrostatic pressure conditions were elucidated through enrichment experiments. Bioreduction experiments were performed under hydrostatic pressures of 0.1-40 MPa. Microbial diversity analysis revealed that high pressures significantly increased microbial diversity in petroleum reservoirs, which is helpful for restoring underground ecosystems in situ. The key piezotolerant iron-reducing bacteria in the samples were Shewanella and Flaviflexus. These two genera were isolated for the first time from petroleum reservoirs and identified as piezophiles. The SEM results clearly showed mineral surface dissolution. Moreover, nanoscale secondary minerals were produced during biomineralization. XRD analysis revealed that illite, albite, and clinoptilolite were present after bioreduction. The isolates showed the capacity to inhibit hydro-swelling and prevent plugging-related damage in reservoirs.
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Affiliation(s)
- Hao Dong
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, China
| | - Li Yu
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, China
| | - Ting Xu
- College of Resources and Environment, Yangtze University, Wuhan 430010, China
| | - Yulong Liu
- Key Laboratory of Drilling and Production Engineering for Oil and Gas, Cooperative Innovation Center of Unconventional Oil and Gas, College of Petroleum Engineering, Yangtze University, Wuhan 430010, China
| | - Jian Fu
- Key Laboratory of Drilling and Production Engineering for Oil and Gas, Cooperative Innovation Center of Unconventional Oil and Gas, College of Petroleum Engineering, Yangtze University, Wuhan 430010, China
| | - Yanlong He
- College of Petroleum Engineering, Xi'an Shiyou University, Xi'an 710065, China
| | - Ji Gao
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, China
| | - Jiaqi Wang
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, China
| | - Shanshan Sun
- Key Laboratory of Drilling and Production Engineering for Oil and Gas, Cooperative Innovation Center of Unconventional Oil and Gas, College of Petroleum Engineering, Yangtze University, Wuhan 430010, China
| | - Yuehui She
- Key Laboratory of Drilling and Production Engineering for Oil and Gas, Cooperative Innovation Center of Unconventional Oil and Gas, College of Petroleum Engineering, Yangtze University, Wuhan 430010, China.
| | - Fan Zhang
- The Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Accumulation Mechanism, Ministry of Education, College of Energy Resources, China University of Geosciences (Beijing), Beijing 100083, China.
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Wang D, Chen C, Hu X, Ju F, Ke Y. Enhancing the Properties of Water-Soluble Copolymer Nanocomposites by Controlling the Layer Silicate Load and Exfoliated Nanolayers Adsorbed on Polymer Chains. Polymers (Basel) 2023; 15:polym15061413. [PMID: 36987194 PMCID: PMC10056508 DOI: 10.3390/polym15061413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 03/07/2023] [Accepted: 03/10/2023] [Indexed: 03/14/2023] Open
Abstract
Novel polymer nanocomposites of methacryloyloxy ethyl dimethyl hexadecyl ammonium bromide-modified montmorillonite (O-MMt) with acrylamide/sodium p-styrene sulfonate/methacryloyloxy ethyl dimethyl hexadecyl ammonium bromide (ASD/O-MMt) were synthesized via in situ polymerization. The molecular structures of the synthesized materials were confirmed using Fourier-transform infrared and 1H-nuclear magnetic resonance spectroscopy. X-ray diffractometry and transmission electron microscopy revealed well-exfoliated and dispersed nanolayers in the polymer matrix, and scanning electron microscopy images revealed that the well-exfoliated nanolayers were strongly adsorbed on the polymer chains. The O-MMt intermediate load was optimized to 1.0%, and the exfoliated nanolayers with strongly adsorbed chains were controlled. The properties of the ASD/O-MMt copolymer nanocomposite, such as its resistance to high temperature, salt, and shear, were significantly enhanced compared with those obtained under other silicate loads. ASD/1.0 wt% O-MMt enhanced oil recovery by 10.5% because the presence of well-exfoliated and dispersed nanolayers improved the comprehensive properties of the nanocomposite. The large surface area, high aspect ratio, abundant active hydroxyl groups, and charge of the exfoliated O-MMt nanolayer also provided high reactivity and facilitated strong adsorption onto the polymer chains, thereby endowing the resulting nanocomposites with outstanding properties. Thus, the as-prepared polymer nanocomposites demonstrate significant potential for oil-recovery applications.
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Dong H, Zhang F, Xu T, Liu Y, Du Y, Wang C, Liu T, Gao J, He Y, Wang X, Sun S, She Y. Culture-dependent and culture-independent methods reveal microbe-clay mineral interactions by dissimilatory iron-reducing bacteria in an integral oilfield. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 840:156577. [PMID: 35688243 DOI: 10.1016/j.scitotenv.2022.156577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 05/19/2022] [Accepted: 06/05/2022] [Indexed: 06/15/2023]
Abstract
Fe(III) may be reasonably considered as one of the most important electron acceptors in petroleum reservoir ecosystems. The microbial mineralization of clay minerals, especially montmorillonite, is also of great significance to the exploration of petroleum and gas reservoirs. The bioreduction mechanisms of iron-poor minerals in petroleum reservoirs have been poorly investigated. This study investigated the bioreduction of montmorillonite by dissimilatory iron-reducing bacteria (DIRB) in petroleum reservoirs based on culture-independent and culture-dependent methods. Microbial diversity analysis revealed that Halolactibacillus, Bacillus, Alkaliphilus, Shewanella, Clostridium, and Pseudomonas were the key genera involved in the bioreduction of Fe(III). Through the traditional culture-dependent method, most of the key genera were isolated from the samples collected from petroleum reservoirs. Traditional culture-dependent methods can be used to reveal the metabolic characteristics of microorganisms (such as iron-reduction efficiency) to further elucidate the roles of different species (B. subtilis and B. alkalitelluris) in the environment. Moreover, many species with high iron-reduction efficiencies and relatively low abundances in the samples, such as Tessaracoccus and Flaviflexus, were isolated from petroleum reservoirs for the first time. The combination of culture-dependent and culture-independent methods can be used to further the understanding of the microbial communities and the metabolic characteristics of DIRB in petroleum reservoirs. Structural alterations that occurred during the interactions of microorganisms and montmorillonite were revealed through scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and X-ray powder diffraction (XRD). The physical and chemical analysis results demonstrated that microorganisms from petroleum reservoirs can dissolve iron-poor montmorillonite and promote the release of interlayer water. The secondary minerals illite and clinoptilolite were observed in bioreduced smectite. The formation of secondary minerals was closely related to the dissolution degrees of minerals based on iron reduction.
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Affiliation(s)
- Hao Dong
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, China.
| | - Fan Zhang
- The Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Accumulation Mechanism, Ministry of Education, College of Energy Resources, China University of Geosciences (Beijing), Beijing 100083, China
| | - Ting Xu
- College of Resources and Environment, Yangtze University, Wuhan 430010, China
| | - Yulong Liu
- Key Laboratory of Drilling and Production Engineering for Oil and Gas, College of Petroleum Engineering, Yangtze University, Wuhan 430010, China
| | - Ying Du
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, China
| | - Chen Wang
- College of Resources and Environment, Yangtze University, Wuhan 430010, China
| | - Tiansheng Liu
- College of Resources and Environment, Yangtze University, Wuhan 430010, China
| | - Ji Gao
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, China
| | - Yanlong He
- College of Petroleum Engineering, Xi'an Shiyou University, Xi'an 710065, China
| | - Xiaotong Wang
- State Key Laboratory of Microbial Resources & CAS Key Laboratory of Microbial Physiological and Metabolic Engineering, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shanshan Sun
- Key Laboratory of Drilling and Production Engineering for Oil and Gas, College of Petroleum Engineering, Yangtze University, Wuhan 430010, China
| | - Yuehui She
- Key Laboratory of Drilling and Production Engineering for Oil and Gas, College of Petroleum Engineering, Yangtze University, Wuhan 430010, China.
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Controlling the Hydro-Swelling of Smectite Clay Minerals by Fe(III) Reducing Bacteria for Enhanced Oil Recovery from Low-Permeability Reservoirs. ENERGIES 2022. [DOI: 10.3390/en15124393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The hydro-swelling of smectite clay minerals in low-permeability reservoirs further decreases the reservoir permeability and results in low oil recovery. Currently, the traditional chemical anti-swelling agents are widely used, but most of them are only effective in the short term and are not environmentally friendly. Here, we report the use of Fe(III) reducing microorganisms (FeRM) as a novel green anti-swelling agent to enhance oil recovery from low-permeability reservoirs. The results showed that FeRM (Proteus hauserifective) inhibited/reduced the hydro-swelling of smectite clay minerals through a three-step biochemical mineralization reaction process. The structural Fe(III) reduction in minerals by FeRM can be an important driving force for illitization. The maximum inhibition efficiency (36.6%) and shrinkage efficiency (69.3%) were achieved at 35 °C and 0.1 Mpa. Furthermore, core displacement tests showed that FeRM reduced the waterflooding injection pressure by 61.1%, increased the core permeability by 49.6%, and increased the oil recovery by 8.1%. Finally, the mechanism of FeRM-enhanced oil recovery was revealed. This study demonstrates that using FeRM to inhibit/reduce the hydro-swelling of clay minerals holds great potential to enhance the oil recovery from low-permeability reservoirs.
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