Numerical Simulation of Seepage in Shale Oil Reservoirs Under Hydraulic Fracturing: From Core-Scale Experiment to Reservoir-Scale Modeling
In this study, finite element software was used to simulate seepage at the core scale, the stress sensitivity of the shale core of the stripe layer and fractures was evaluated, and the production optimization design of reservoir C in block B of the oilfield under different fracturing parameters and...
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2024-11-01
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| Online Access: | https://www.mdpi.com/1996-1073/17/22/5636 |
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| author | Yanfang Gao Di Wang Zupeng Chen Yanchao Li Shijie Shen Dengke Li Xuelin Liang Zhi Huang |
| author_facet | Yanfang Gao Di Wang Zupeng Chen Yanchao Li Shijie Shen Dengke Li Xuelin Liang Zhi Huang |
| author_sort | Yanfang Gao |
| collection | DOAJ |
| description | In this study, finite element software was used to simulate seepage at the core scale, the stress sensitivity of the shale core of the stripe layer and fractures was evaluated, and the production optimization design of reservoir C in block B of the oilfield under different fracturing parameters and wellbore parameters was simulated. The coupled finite element model of reservoir seepage stress was established; the pore elasticity model was used to determine the reservoir deformation; the seepage followed Forchheimer’s law and Darcy’s law; and finally, the liquid production was calculated to optimize the production plan. The results showed that the permeability under the same stress conditions increased nonlinearly with the increase in the striatal angle at the core scale, the permeability under the same effective stress conditions decreased gradually with the increase in the shale/fringe thickness ratio, and the elastic modulus and Poisson’s ratio of the proppant decreased. The permeability stress sensitivity was stronger. In the reservoir-scale model, the production pressure difference was the most significant factor affecting shale oil production, followed by the number of fractures and the length of the horizontal zone wellbore, and the elastic modulus of the proppant and Poisson’s ratio had the least impact on production. |
| format | Article |
| id | doaj-art-3a5531be3ccb4404bc6590d51b882892 |
| institution | OA Journals |
| issn | 1996-1073 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj-art-3a5531be3ccb4404bc6590d51b8828922025-08-20T02:28:05ZengMDPI AGEnergies1996-10732024-11-011722563610.3390/en17225636Numerical Simulation of Seepage in Shale Oil Reservoirs Under Hydraulic Fracturing: From Core-Scale Experiment to Reservoir-Scale ModelingYanfang Gao0Di Wang1Zupeng Chen2Yanchao Li3Shijie Shen4Dengke Li5Xuelin Liang6Zhi Huang7State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, Beijing 100083, ChinaState Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, Beijing 100083, ChinaDepartment of Geology, Northwest University, Xi’an 710069, ChinaDepartment of Geology, Northwest University, Xi’an 710069, ChinaDepartment of Geology, Northwest University, Xi’an 710069, ChinaDepartment of Geology, Northwest University, Xi’an 710069, ChinaDepartment of Geology, Northwest University, Xi’an 710069, ChinaDepartment of Geology, Northwest University, Xi’an 710069, ChinaIn this study, finite element software was used to simulate seepage at the core scale, the stress sensitivity of the shale core of the stripe layer and fractures was evaluated, and the production optimization design of reservoir C in block B of the oilfield under different fracturing parameters and wellbore parameters was simulated. The coupled finite element model of reservoir seepage stress was established; the pore elasticity model was used to determine the reservoir deformation; the seepage followed Forchheimer’s law and Darcy’s law; and finally, the liquid production was calculated to optimize the production plan. The results showed that the permeability under the same stress conditions increased nonlinearly with the increase in the striatal angle at the core scale, the permeability under the same effective stress conditions decreased gradually with the increase in the shale/fringe thickness ratio, and the elastic modulus and Poisson’s ratio of the proppant decreased. The permeability stress sensitivity was stronger. In the reservoir-scale model, the production pressure difference was the most significant factor affecting shale oil production, followed by the number of fractures and the length of the horizontal zone wellbore, and the elastic modulus of the proppant and Poisson’s ratio had the least impact on production.https://www.mdpi.com/1996-1073/17/22/5636shale oil reservoirsfinite elementsnumerical simulationstress sensitivitycracks |
| spellingShingle | Yanfang Gao Di Wang Zupeng Chen Yanchao Li Shijie Shen Dengke Li Xuelin Liang Zhi Huang Numerical Simulation of Seepage in Shale Oil Reservoirs Under Hydraulic Fracturing: From Core-Scale Experiment to Reservoir-Scale Modeling Energies shale oil reservoirs finite elements numerical simulation stress sensitivity cracks |
| title | Numerical Simulation of Seepage in Shale Oil Reservoirs Under Hydraulic Fracturing: From Core-Scale Experiment to Reservoir-Scale Modeling |
| title_full | Numerical Simulation of Seepage in Shale Oil Reservoirs Under Hydraulic Fracturing: From Core-Scale Experiment to Reservoir-Scale Modeling |
| title_fullStr | Numerical Simulation of Seepage in Shale Oil Reservoirs Under Hydraulic Fracturing: From Core-Scale Experiment to Reservoir-Scale Modeling |
| title_full_unstemmed | Numerical Simulation of Seepage in Shale Oil Reservoirs Under Hydraulic Fracturing: From Core-Scale Experiment to Reservoir-Scale Modeling |
| title_short | Numerical Simulation of Seepage in Shale Oil Reservoirs Under Hydraulic Fracturing: From Core-Scale Experiment to Reservoir-Scale Modeling |
| title_sort | numerical simulation of seepage in shale oil reservoirs under hydraulic fracturing from core scale experiment to reservoir scale modeling |
| topic | shale oil reservoirs finite elements numerical simulation stress sensitivity cracks |
| url | https://www.mdpi.com/1996-1073/17/22/5636 |
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