Seepage Mechanism of Tight Sandstone Reservoir Based on Digital Core Simulation Method
Recently, tight sandstone oil has played an increasingly important role in the energy strategies of countries around the world. However, the understanding of a microscopic mechanism is still not clear enough, which has been affecting the improvement of the recovery of tight sandstone oil. In this ar...
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| Format: | Article |
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MDPI AG
2021-04-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/9/3741 |
| _version_ | 1797536934672728064 |
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| author | Huaiyu Wu Xisong Dong Yang Xu Gang Xiong Zhen Shen Yong Wang |
| author_facet | Huaiyu Wu Xisong Dong Yang Xu Gang Xiong Zhen Shen Yong Wang |
| author_sort | Huaiyu Wu |
| collection | DOAJ |
| description | Recently, tight sandstone oil has played an increasingly important role in the energy strategies of countries around the world. However, the understanding of a microscopic mechanism is still not clear enough, which has been affecting the improvement of the recovery of tight sandstone oil. In this article, a digital core model was established to simulate the pore network of a physical core with CT scan and difference equations were verified by Fourier counting. Then, a combination of orthogonal tests and cubic digital cores was used to experimentally investigate various parameters including pressure, length, permeability, viscosity, and time. By combining the physical experiments with the digital core methods, it can be observed that the state of the micro-crack affects the conductivity of the core, which may be the decisive reason for changing the pressure gradient. The orthogonal test showed that the sensitivity of the parameters was pressure, length, permeability, time, and viscosity in order. The results of the numerical simulations showed that this method can reveal the seepage mechanism of a tight sandstone reservoir, greatly shortening the experimental time and improving flexibility. |
| first_indexed | 2024-03-10T12:07:54Z |
| format | Article |
| id | doaj.art-b852abb953b14827951a9cdf72a6995f |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T12:07:54Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-b852abb953b14827951a9cdf72a6995f2023-11-21T16:27:40ZengMDPI AGApplied Sciences2076-34172021-04-01119374110.3390/app11093741Seepage Mechanism of Tight Sandstone Reservoir Based on Digital Core Simulation MethodHuaiyu Wu0Xisong Dong1Yang Xu2Gang Xiong3Zhen Shen4Yong Wang5The State Key Laboratory of Management and Control for Complex Systems & the Beijing Engineering Research Center of Intelligent Systems and Technology, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, ChinaThe State Key Laboratory of Management and Control for Complex Systems & the Beijing Engineering Research Center of Intelligent Systems and Technology, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, ChinaInstitute of Information Engineering, Chinese Academy of Sciences, Beijing 100190, ChinaThe State Key Laboratory of Management and Control for Complex Systems & the Beijing Engineering Research Center of Intelligent Systems and Technology, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, ChinaThe State Key Laboratory of Management and Control for Complex Systems & the Beijing Engineering Research Center of Intelligent Systems and Technology, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, ChinaSchool of Artificial Intelligence, University of Chinese Academy of Sciences, Beijing 100049, ChinaRecently, tight sandstone oil has played an increasingly important role in the energy strategies of countries around the world. However, the understanding of a microscopic mechanism is still not clear enough, which has been affecting the improvement of the recovery of tight sandstone oil. In this article, a digital core model was established to simulate the pore network of a physical core with CT scan and difference equations were verified by Fourier counting. Then, a combination of orthogonal tests and cubic digital cores was used to experimentally investigate various parameters including pressure, length, permeability, viscosity, and time. By combining the physical experiments with the digital core methods, it can be observed that the state of the micro-crack affects the conductivity of the core, which may be the decisive reason for changing the pressure gradient. The orthogonal test showed that the sensitivity of the parameters was pressure, length, permeability, time, and viscosity in order. The results of the numerical simulations showed that this method can reveal the seepage mechanism of a tight sandstone reservoir, greatly shortening the experimental time and improving flexibility.https://www.mdpi.com/2076-3417/11/9/3741digital coretight oilorthogonal experimentdifference equation |
| spellingShingle | Huaiyu Wu Xisong Dong Yang Xu Gang Xiong Zhen Shen Yong Wang Seepage Mechanism of Tight Sandstone Reservoir Based on Digital Core Simulation Method Applied Sciences digital core tight oil orthogonal experiment difference equation |
| title | Seepage Mechanism of Tight Sandstone Reservoir Based on Digital Core Simulation Method |
| title_full | Seepage Mechanism of Tight Sandstone Reservoir Based on Digital Core Simulation Method |
| title_fullStr | Seepage Mechanism of Tight Sandstone Reservoir Based on Digital Core Simulation Method |
| title_full_unstemmed | Seepage Mechanism of Tight Sandstone Reservoir Based on Digital Core Simulation Method |
| title_short | Seepage Mechanism of Tight Sandstone Reservoir Based on Digital Core Simulation Method |
| title_sort | seepage mechanism of tight sandstone reservoir based on digital core simulation method |
| topic | digital core tight oil orthogonal experiment difference equation |
| url | https://www.mdpi.com/2076-3417/11/9/3741 |
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