The Influence of Micro-Fractures on the Flow in Tight Oil Reservoirs Based on Pore-Network Models
In this paper, the influence of micro-fractures on the flow of tight reservoirs is studied on the microscopic scale. Three-dimensional digital cores of fractured tight sandstone with varying fracture apertures, lengths, and dip angles are constructed using computed tomography (CT) scans. Pore-networ...
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| Format: | Article |
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MDPI AG
2019-10-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/12/21/4104 |
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| author | Hai Sun Lian Duan Lei Liu Weipeng Fan Dongyan Fan Jun Yao Lei Zhang Yongfei Yang Jianlin Zhao |
| author_facet | Hai Sun Lian Duan Lei Liu Weipeng Fan Dongyan Fan Jun Yao Lei Zhang Yongfei Yang Jianlin Zhao |
| author_sort | Hai Sun |
| collection | DOAJ |
| description | In this paper, the influence of micro-fractures on the flow of tight reservoirs is studied on the microscopic scale. Three-dimensional digital cores of fractured tight sandstone with varying fracture apertures, lengths, and dip angles are constructed using computed tomography (CT) scans. Pore-network models are built using the three-dimensional digital cores to simulate the flow in tight oil reservoirs. The effects of the micro-fracture aperture, length and dip angle on the pore-throat structure, single-phase flow, and two-phase flow for fracture surfaces with/without roughness are studied. The study demonstrates different influences of micro-fracture characteristics on the flow, and the fracture aperture has the most critical effect. Meanwhile, the roughness of the micro-fracture makes a difference in addition to the three factors of micro-fractures. This paper provides a theoretical basis for the effective development of tight sandstone reservoirs. |
| first_indexed | 2024-04-11T21:47:34Z |
| format | Article |
| id | doaj.art-313dd9087155414c9988ffa83e34e3fe |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T21:47:34Z |
| publishDate | 2019-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-313dd9087155414c9988ffa83e34e3fe2022-12-22T04:01:22ZengMDPI AGEnergies1996-10732019-10-011221410410.3390/en12214104en12214104The Influence of Micro-Fractures on the Flow in Tight Oil Reservoirs Based on Pore-Network ModelsHai Sun0Lian Duan1Lei Liu2Weipeng Fan3Dongyan Fan4Jun Yao5Lei Zhang6Yongfei Yang7Jianlin Zhao8Research Centre of Multiphase Flow in Porous Media, School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, ChinaResearch Centre of Multiphase Flow in Porous Media, School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, ChinaResearch Centre of Multiphase Flow in Porous Media, School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, ChinaResearch Centre of Multiphase Flow in Porous Media, School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, ChinaResearch Centre of Multiphase Flow in Porous Media, School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, ChinaResearch Centre of Multiphase Flow in Porous Media, School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, ChinaResearch Centre of Multiphase Flow in Porous Media, School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, ChinaResearch Centre of Multiphase Flow in Porous Media, School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, ChinaDepartment of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, SwitzerlandIn this paper, the influence of micro-fractures on the flow of tight reservoirs is studied on the microscopic scale. Three-dimensional digital cores of fractured tight sandstone with varying fracture apertures, lengths, and dip angles are constructed using computed tomography (CT) scans. Pore-network models are built using the three-dimensional digital cores to simulate the flow in tight oil reservoirs. The effects of the micro-fracture aperture, length and dip angle on the pore-throat structure, single-phase flow, and two-phase flow for fracture surfaces with/without roughness are studied. The study demonstrates different influences of micro-fracture characteristics on the flow, and the fracture aperture has the most critical effect. Meanwhile, the roughness of the micro-fracture makes a difference in addition to the three factors of micro-fractures. This paper provides a theoretical basis for the effective development of tight sandstone reservoirs.https://www.mdpi.com/1996-1073/12/21/4104micro-fracturetight reservoirpore-network modelroughness |
| spellingShingle | Hai Sun Lian Duan Lei Liu Weipeng Fan Dongyan Fan Jun Yao Lei Zhang Yongfei Yang Jianlin Zhao The Influence of Micro-Fractures on the Flow in Tight Oil Reservoirs Based on Pore-Network Models Energies micro-fracture tight reservoir pore-network model roughness |
| title | The Influence of Micro-Fractures on the Flow in Tight Oil Reservoirs Based on Pore-Network Models |
| title_full | The Influence of Micro-Fractures on the Flow in Tight Oil Reservoirs Based on Pore-Network Models |
| title_fullStr | The Influence of Micro-Fractures on the Flow in Tight Oil Reservoirs Based on Pore-Network Models |
| title_full_unstemmed | The Influence of Micro-Fractures on the Flow in Tight Oil Reservoirs Based on Pore-Network Models |
| title_short | The Influence of Micro-Fractures on the Flow in Tight Oil Reservoirs Based on Pore-Network Models |
| title_sort | influence of micro fractures on the flow in tight oil reservoirs based on pore network models |
| topic | micro-fracture tight reservoir pore-network model roughness |
| url | https://www.mdpi.com/1996-1073/12/21/4104 |
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