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Lithofacies Types and Reservoir Characteristics of Mountain Shale in Wufeng Formation-Member 1 of Longmaxi Formation in the Complex Structural Area of Northern Yunnan–Guizhou
[Image: see text] The mountain shale in Wufeng Formation-Member 1 of Longmaxi Formation in the complex structural area of northern Yunnan–Guizhou has great potential for exploration and development. In order to clarify the differences of reservoir quality and the longitudinal distribution law of dif...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2023
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9850721/ https://www.ncbi.nlm.nih.gov/pubmed/36687069 http://dx.doi.org/10.1021/acsomega.2c05868 |
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author | Chai, Bingqiang Zhao, Feng Ji, Yubing Chen, Lei Cheng, Qingsong |
author_facet | Chai, Bingqiang Zhao, Feng Ji, Yubing Chen, Lei Cheng, Qingsong |
author_sort | Chai, Bingqiang |
collection | PubMed |
description | [Image: see text] The mountain shale in Wufeng Formation-Member 1 of Longmaxi Formation in the complex structural area of northern Yunnan–Guizhou has great potential for exploration and development. In order to clarify the differences of reservoir quality and the longitudinal distribution law of different lithofacies, the lithofacies in Wufeng Formation-Member 1 of Longmaxi Formation was divided combined with core, logging, and analytical test data. Based on the data of total organic carbon, laminate structure, reservoir porosity types and physical properties, and gas content, the reservoir characteristics and advantageous lithofacies shale reservoir distribution were determined. The results show that the mountain shale lithofacies in the study area are divided into 7 major types and 20 subtypes. The high-carbon siliceous shale has the highest degree of organic pore development, specific surface area (average 28.55 cm(2)/g), and pore volume (average 0.0397 cm(3)/g). Two types of advantageous lithofacies shale reservoir in the study area were identified. The high-carbon siliceous shale reservoir could be considered as an excellent shale reservoir for shale gas and is mainly concentrated in the first section. It is mainly developed in layer-1 and the bottom of layer-2 of the Longmaxi Formation, providing favorable source-reservoir conditions for shale gas enrichment. The medium-carbon siliceous shale, medium-carbon clay siliceous shale, and medium-carbon calcareous siliceous shale, developed in the top of layer-2 and the bottom of layer-3 of the Longmaxi Formation, are assumed to be moderately promising for shale gas. Therefore, the research results deepen the understanding of the longitudinal distribution of the dominant shale reservoirs in the study area and are of great significance in promoting strategic transfer of the main shale gas exploration system in the south from the Sichuan basin to the outer basin. |
format | Online Article Text |
id | pubmed-9850721 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-98507212023-01-20 Lithofacies Types and Reservoir Characteristics of Mountain Shale in Wufeng Formation-Member 1 of Longmaxi Formation in the Complex Structural Area of Northern Yunnan–Guizhou Chai, Bingqiang Zhao, Feng Ji, Yubing Chen, Lei Cheng, Qingsong ACS Omega [Image: see text] The mountain shale in Wufeng Formation-Member 1 of Longmaxi Formation in the complex structural area of northern Yunnan–Guizhou has great potential for exploration and development. In order to clarify the differences of reservoir quality and the longitudinal distribution law of different lithofacies, the lithofacies in Wufeng Formation-Member 1 of Longmaxi Formation was divided combined with core, logging, and analytical test data. Based on the data of total organic carbon, laminate structure, reservoir porosity types and physical properties, and gas content, the reservoir characteristics and advantageous lithofacies shale reservoir distribution were determined. The results show that the mountain shale lithofacies in the study area are divided into 7 major types and 20 subtypes. The high-carbon siliceous shale has the highest degree of organic pore development, specific surface area (average 28.55 cm(2)/g), and pore volume (average 0.0397 cm(3)/g). Two types of advantageous lithofacies shale reservoir in the study area were identified. The high-carbon siliceous shale reservoir could be considered as an excellent shale reservoir for shale gas and is mainly concentrated in the first section. It is mainly developed in layer-1 and the bottom of layer-2 of the Longmaxi Formation, providing favorable source-reservoir conditions for shale gas enrichment. The medium-carbon siliceous shale, medium-carbon clay siliceous shale, and medium-carbon calcareous siliceous shale, developed in the top of layer-2 and the bottom of layer-3 of the Longmaxi Formation, are assumed to be moderately promising for shale gas. Therefore, the research results deepen the understanding of the longitudinal distribution of the dominant shale reservoirs in the study area and are of great significance in promoting strategic transfer of the main shale gas exploration system in the south from the Sichuan basin to the outer basin. American Chemical Society 2023-01-06 /pmc/articles/PMC9850721/ /pubmed/36687069 http://dx.doi.org/10.1021/acsomega.2c05868 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Chai, Bingqiang Zhao, Feng Ji, Yubing Chen, Lei Cheng, Qingsong Lithofacies Types and Reservoir Characteristics of Mountain Shale in Wufeng Formation-Member 1 of Longmaxi Formation in the Complex Structural Area of Northern Yunnan–Guizhou |
title | Lithofacies Types
and Reservoir Characteristics of
Mountain Shale in Wufeng Formation-Member 1 of Longmaxi Formation
in the Complex Structural Area of Northern Yunnan–Guizhou |
title_full | Lithofacies Types
and Reservoir Characteristics of
Mountain Shale in Wufeng Formation-Member 1 of Longmaxi Formation
in the Complex Structural Area of Northern Yunnan–Guizhou |
title_fullStr | Lithofacies Types
and Reservoir Characteristics of
Mountain Shale in Wufeng Formation-Member 1 of Longmaxi Formation
in the Complex Structural Area of Northern Yunnan–Guizhou |
title_full_unstemmed | Lithofacies Types
and Reservoir Characteristics of
Mountain Shale in Wufeng Formation-Member 1 of Longmaxi Formation
in the Complex Structural Area of Northern Yunnan–Guizhou |
title_short | Lithofacies Types
and Reservoir Characteristics of
Mountain Shale in Wufeng Formation-Member 1 of Longmaxi Formation
in the Complex Structural Area of Northern Yunnan–Guizhou |
title_sort | lithofacies types
and reservoir characteristics of
mountain shale in wufeng formation-member 1 of longmaxi formation
in the complex structural area of northern yunnan–guizhou |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9850721/ https://www.ncbi.nlm.nih.gov/pubmed/36687069 http://dx.doi.org/10.1021/acsomega.2c05868 |
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