Pore characteristics and its heterogeneity of lignite reservoir in the Erlian Basin of Inner Mongolia, China
The pore characteristics of coal reservoirs play a very important role in the migration of coalbed methane reservoirs, and its heterogeneity has been studied by a large number of scholars. However, there are few studies on lignite reservoirs. In this paper, three sets of lignite reservoirs in the Ji...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2022-11-01
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| Series: | Energy Exploration & Exploitation |
| Online Access: | https://doi.org/10.1177/01445987221099088 |
| _version_ | 1811266030062796800 |
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| author | Pengfei Jiang Hao Xu Heng Wu Fudong Xin Tiantian Zhao Xiangyang Chen |
| author_facet | Pengfei Jiang Hao Xu Heng Wu Fudong Xin Tiantian Zhao Xiangyang Chen |
| author_sort | Pengfei Jiang |
| collection | DOAJ |
| description | The pore characteristics of coal reservoirs play a very important role in the migration of coalbed methane reservoirs, and its heterogeneity has been studied by a large number of scholars. However, there are few studies on lignite reservoirs. In this paper, three sets of lignite reservoirs in the Jiergalangtu depression are taken as the research object. The scanning electron microscope (SEM) images are converted from time-domain signals to frequency-domain signals through Fourier transformation, which quantitatively characterizes the heterogeneity of coal reservoirs. The variance of the value indicates that the three sets of coal seams NO.4Var<NO.5Var<NO.6Var. Through nitrogen adsorption experiment and fractal analysis, the pore continuity, surface roughness, pore structure, pore type and other aspects are studied. The lignite in the study area has high pore surface roughness and complex pore structure. Affected by various geological factors such as material composition, coal-forming environment, degree of evolution and other geological factors, lignite reservoirs in different layers and different mining areas show obvious heterogeneity. |
| first_indexed | 2024-04-12T20:34:38Z |
| format | Article |
| id | doaj.art-2f97714eb37e42c6bf1eb14905add559 |
| institution | Directory Open Access Journal |
| issn | 0144-5987 2048-4054 |
| language | English |
| last_indexed | 2024-04-12T20:34:38Z |
| publishDate | 2022-11-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Energy Exploration & Exploitation |
| spelling | doaj.art-2f97714eb37e42c6bf1eb14905add5592022-12-22T03:17:36ZengSAGE PublishingEnergy Exploration & Exploitation0144-59872048-40542022-11-014010.1177/01445987221099088Pore characteristics and its heterogeneity of lignite reservoir in the Erlian Basin of Inner Mongolia, ChinaPengfei Jiang0Hao Xu1Heng Wu2Fudong Xin3Tiantian Zhao4Xiangyang Chen5 Beijing Key Laboratory of Unconventional Natural Gas Geological Evaluation and Development Engineering, Beijing, China Beijing Key Laboratory of Unconventional Natural Gas Geological Evaluation and Development Engineering, Beijing, China Beijing Key Laboratory of Unconventional Natural Gas Geological Evaluation and Development Engineering, Beijing, China Beijing Key Laboratory of Unconventional Natural Gas Geological Evaluation and Development Engineering, Beijing, China Beijing Key Laboratory of Unconventional Natural Gas Geological Evaluation and Development Engineering, Beijing, China Beijing Key Laboratory of Unconventional Natural Gas Geological Evaluation and Development Engineering, Beijing, ChinaThe pore characteristics of coal reservoirs play a very important role in the migration of coalbed methane reservoirs, and its heterogeneity has been studied by a large number of scholars. However, there are few studies on lignite reservoirs. In this paper, three sets of lignite reservoirs in the Jiergalangtu depression are taken as the research object. The scanning electron microscope (SEM) images are converted from time-domain signals to frequency-domain signals through Fourier transformation, which quantitatively characterizes the heterogeneity of coal reservoirs. The variance of the value indicates that the three sets of coal seams NO.4Var<NO.5Var<NO.6Var. Through nitrogen adsorption experiment and fractal analysis, the pore continuity, surface roughness, pore structure, pore type and other aspects are studied. The lignite in the study area has high pore surface roughness and complex pore structure. Affected by various geological factors such as material composition, coal-forming environment, degree of evolution and other geological factors, lignite reservoirs in different layers and different mining areas show obvious heterogeneity.https://doi.org/10.1177/01445987221099088 |
| spellingShingle | Pengfei Jiang Hao Xu Heng Wu Fudong Xin Tiantian Zhao Xiangyang Chen Pore characteristics and its heterogeneity of lignite reservoir in the Erlian Basin of Inner Mongolia, China Energy Exploration & Exploitation |
| title | Pore characteristics and its heterogeneity of lignite reservoir in the Erlian Basin of Inner Mongolia, China |
| title_full | Pore characteristics and its heterogeneity of lignite reservoir in the Erlian Basin of Inner Mongolia, China |
| title_fullStr | Pore characteristics and its heterogeneity of lignite reservoir in the Erlian Basin of Inner Mongolia, China |
| title_full_unstemmed | Pore characteristics and its heterogeneity of lignite reservoir in the Erlian Basin of Inner Mongolia, China |
| title_short | Pore characteristics and its heterogeneity of lignite reservoir in the Erlian Basin of Inner Mongolia, China |
| title_sort | pore characteristics and its heterogeneity of lignite reservoir in the erlian basin of inner mongolia china |
| url | https://doi.org/10.1177/01445987221099088 |
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