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Microbial Communities Affected by Hydraulic Fracturing and Environmental Factors within an In Situ Coal Reservoir

The rise of coalbed methane bioengineering enables the conversion and utilization of carbon dioxide through microbial action and the carbon cycle. The environment of underground coal reservoirs is the result of a comprehensive effort by microorganisms. Some studies on reservoir microorganisms have p...

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Autores principales: Li, Yang, Chen, Jian, Tang, Shuheng, Xi, Zhaodong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10385777/
https://www.ncbi.nlm.nih.gov/pubmed/37512830
http://dx.doi.org/10.3390/microorganisms11071657
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author Li, Yang
Chen, Jian
Tang, Shuheng
Xi, Zhaodong
author_facet Li, Yang
Chen, Jian
Tang, Shuheng
Xi, Zhaodong
author_sort Li, Yang
collection PubMed
description The rise of coalbed methane bioengineering enables the conversion and utilization of carbon dioxide through microbial action and the carbon cycle. The environment of underground coal reservoirs is the result of a comprehensive effort by microorganisms. Some studies on reservoir microorganisms have progressed in laboratory conditions. However, it does not replicate the interaction between microorganisms and the environment on site. Hydraulic fracturing is an engineering technology to improve the natural permeability of tight reservoirs and is also a prerequisite for increasing biomethane production. In addition to expanding the pore and fracture systems of coal reservoirs, hydraulic fracturing also improves the living conditions of microbial communities in underground space. The characteristics of microbial communities in the reservoir after hydraulic fracturing are unclear. To this end, we applied the 16S rRNA sequencing technique to coalbed methane production water after hydraulic fracturing south of the Qinshui Basin to analyze the microbial response of the hydraulic fracturing process in the coal reservoir. The diversity of microbial communities associated with organic degradation was improved after hydraulic fracturing in the coal reservoir. The proportion of Actinobacteria in the reservoir water of the study area increased significantly, and the abundance of Aminicenantes and Planctomycetes increased, which do not exist in non-fracturing coalbed methane wells or exist at very low abundance. There are different types of methanogens in the study area, especially in fracturing wells. Ecological factors also determine the metabolic pathway of methanogens in coal seams. After hydraulic fracturing, the impact on the reservoir’s microbial communities remains within months. Hydraulic fracturing can strengthen the carbon circulation process, thereby enhancing the block’s methane and carbon dioxide circulation. The study provides a unique theoretical basis for microbially enhanced coalbed methane.
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spelling pubmed-103857772023-07-30 Microbial Communities Affected by Hydraulic Fracturing and Environmental Factors within an In Situ Coal Reservoir Li, Yang Chen, Jian Tang, Shuheng Xi, Zhaodong Microorganisms Article The rise of coalbed methane bioengineering enables the conversion and utilization of carbon dioxide through microbial action and the carbon cycle. The environment of underground coal reservoirs is the result of a comprehensive effort by microorganisms. Some studies on reservoir microorganisms have progressed in laboratory conditions. However, it does not replicate the interaction between microorganisms and the environment on site. Hydraulic fracturing is an engineering technology to improve the natural permeability of tight reservoirs and is also a prerequisite for increasing biomethane production. In addition to expanding the pore and fracture systems of coal reservoirs, hydraulic fracturing also improves the living conditions of microbial communities in underground space. The characteristics of microbial communities in the reservoir after hydraulic fracturing are unclear. To this end, we applied the 16S rRNA sequencing technique to coalbed methane production water after hydraulic fracturing south of the Qinshui Basin to analyze the microbial response of the hydraulic fracturing process in the coal reservoir. The diversity of microbial communities associated with organic degradation was improved after hydraulic fracturing in the coal reservoir. The proportion of Actinobacteria in the reservoir water of the study area increased significantly, and the abundance of Aminicenantes and Planctomycetes increased, which do not exist in non-fracturing coalbed methane wells or exist at very low abundance. There are different types of methanogens in the study area, especially in fracturing wells. Ecological factors also determine the metabolic pathway of methanogens in coal seams. After hydraulic fracturing, the impact on the reservoir’s microbial communities remains within months. Hydraulic fracturing can strengthen the carbon circulation process, thereby enhancing the block’s methane and carbon dioxide circulation. The study provides a unique theoretical basis for microbially enhanced coalbed methane. MDPI 2023-06-25 /pmc/articles/PMC10385777/ /pubmed/37512830 http://dx.doi.org/10.3390/microorganisms11071657 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Li, Yang
Chen, Jian
Tang, Shuheng
Xi, Zhaodong
Microbial Communities Affected by Hydraulic Fracturing and Environmental Factors within an In Situ Coal Reservoir
title Microbial Communities Affected by Hydraulic Fracturing and Environmental Factors within an In Situ Coal Reservoir
title_full Microbial Communities Affected by Hydraulic Fracturing and Environmental Factors within an In Situ Coal Reservoir
title_fullStr Microbial Communities Affected by Hydraulic Fracturing and Environmental Factors within an In Situ Coal Reservoir
title_full_unstemmed Microbial Communities Affected by Hydraulic Fracturing and Environmental Factors within an In Situ Coal Reservoir
title_short Microbial Communities Affected by Hydraulic Fracturing and Environmental Factors within an In Situ Coal Reservoir
title_sort microbial communities affected by hydraulic fracturing and environmental factors within an in situ coal reservoir
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10385777/
https://www.ncbi.nlm.nih.gov/pubmed/37512830
http://dx.doi.org/10.3390/microorganisms11071657
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