Microfracture development at Ziliujing lacustrine shale reservoir and its significance for shale-gas enrichment at Fuling in eastern Sichuan Basin, China
Microfractures at the Ziliujing lacustrine shale at Fuling in eastern Sichuan Basin were investigated through core observation, SEM image observation and high-pressure mercury injection. and quantifies the impact of micro fracture development to reservoir capacity, leads to the following understandi...
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| Format: | Article |
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KeAi Communications Co., Ltd.
2022-02-01
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| Series: | Journal of Natural Gas Geoscience |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468256X22000037 |
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| author | Pengwei Wang Zhongbao Liu Dongjun Feng Xiao Chen Fei Li Jingyu Hao Ruyue Wang |
| author_facet | Pengwei Wang Zhongbao Liu Dongjun Feng Xiao Chen Fei Li Jingyu Hao Ruyue Wang |
| author_sort | Pengwei Wang |
| collection | DOAJ |
| description | Microfractures at the Ziliujing lacustrine shale at Fuling in eastern Sichuan Basin were investigated through core observation, SEM image observation and high-pressure mercury injection. and quantifies the impact of micro fracture development to reservoir capacity, leads to the following understanding: (1) fracture types in lacustrine shale reservoir are defined; (2) the contribution of fractures to lacustrine shale reservoir is determined. Results show that the microfractures in the Lower Jurassic Ziliujing lacustrine shale reservoirs in eastern Sichuan Basin can be divided into three types, each with four groups: micro fractures related to sedimentation (bedding fractures), microfractures related to diagenesis (clay–mineral shrinkage fractures), and micro fractures related to hydrocarbon generation (organic-matter shrinkage fractures and organic-matter-cracking fractures). High-pressure mercury injection and plane porosity determination confirm that microfractures in lacustrine shale reservoirs exhibit good reservoir performance, whose contribution to shale reservoir capacity is about 25%. |
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| format | Article |
| id | doaj.art-b01aa9983b5d4b9a9ad31a3bd79f5031 |
| institution | Directory Open Access Journal |
| issn | 2468-256X |
| language | English |
| last_indexed | 2024-03-12T18:04:43Z |
| publishDate | 2022-02-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Natural Gas Geoscience |
| spelling | doaj.art-b01aa9983b5d4b9a9ad31a3bd79f50312023-08-02T09:31:46ZengKeAi Communications Co., Ltd.Journal of Natural Gas Geoscience2468-256X2022-02-01713948Microfracture development at Ziliujing lacustrine shale reservoir and its significance for shale-gas enrichment at Fuling in eastern Sichuan Basin, ChinaPengwei Wang0Zhongbao Liu1Dongjun Feng2Xiao Chen3Fei Li4Jingyu Hao5Ruyue Wang6Research Institute of Petroleum Exploration & Production, SINOPEC, Beijing, 100083, China; Corresponding author.Research Institute of Petroleum Exploration & Production, SINOPEC, Beijing, 100083, ChinaResearch Institute of Petroleum Exploration & Production, SINOPEC, Beijing, 100083, ChinaCNOOC Research Institute, Beijing, 100027, ChinaSouthern Company of Sinopec Exploration, Chengdu 610041, Sichuan, ChinaSouthern Company of Sinopec Exploration, Chengdu 610041, Sichuan, ChinaResearch Institute of Petroleum Exploration & Production, SINOPEC, Beijing, 100083, ChinaMicrofractures at the Ziliujing lacustrine shale at Fuling in eastern Sichuan Basin were investigated through core observation, SEM image observation and high-pressure mercury injection. and quantifies the impact of micro fracture development to reservoir capacity, leads to the following understanding: (1) fracture types in lacustrine shale reservoir are defined; (2) the contribution of fractures to lacustrine shale reservoir is determined. Results show that the microfractures in the Lower Jurassic Ziliujing lacustrine shale reservoirs in eastern Sichuan Basin can be divided into three types, each with four groups: micro fractures related to sedimentation (bedding fractures), microfractures related to diagenesis (clay–mineral shrinkage fractures), and micro fractures related to hydrocarbon generation (organic-matter shrinkage fractures and organic-matter-cracking fractures). High-pressure mercury injection and plane porosity determination confirm that microfractures in lacustrine shale reservoirs exhibit good reservoir performance, whose contribution to shale reservoir capacity is about 25%.http://www.sciencedirect.com/science/article/pii/S2468256X22000037Lacustrine shaleMicrofractureDevelopment characteristicsMiddle-Lower JurassicZiliujing FormationEastern Sichuan Basin |
| spellingShingle | Pengwei Wang Zhongbao Liu Dongjun Feng Xiao Chen Fei Li Jingyu Hao Ruyue Wang Microfracture development at Ziliujing lacustrine shale reservoir and its significance for shale-gas enrichment at Fuling in eastern Sichuan Basin, China Journal of Natural Gas Geoscience Lacustrine shale Microfracture Development characteristics Middle-Lower Jurassic Ziliujing Formation Eastern Sichuan Basin |
| title | Microfracture development at Ziliujing lacustrine shale reservoir and its significance for shale-gas enrichment at Fuling in eastern Sichuan Basin, China |
| title_full | Microfracture development at Ziliujing lacustrine shale reservoir and its significance for shale-gas enrichment at Fuling in eastern Sichuan Basin, China |
| title_fullStr | Microfracture development at Ziliujing lacustrine shale reservoir and its significance for shale-gas enrichment at Fuling in eastern Sichuan Basin, China |
| title_full_unstemmed | Microfracture development at Ziliujing lacustrine shale reservoir and its significance for shale-gas enrichment at Fuling in eastern Sichuan Basin, China |
| title_short | Microfracture development at Ziliujing lacustrine shale reservoir and its significance for shale-gas enrichment at Fuling in eastern Sichuan Basin, China |
| title_sort | microfracture development at ziliujing lacustrine shale reservoir and its significance for shale gas enrichment at fuling in eastern sichuan basin china |
| topic | Lacustrine shale Microfracture Development characteristics Middle-Lower Jurassic Ziliujing Formation Eastern Sichuan Basin |
| url | http://www.sciencedirect.com/science/article/pii/S2468256X22000037 |
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