Numerical Simulation of Shale Gas Multiscale Seepage Mechanism-Coupled Stress Sensitivity
The complexity of the gas transport mechanism in microfractures and nanopores is caused by the feature of multiscale and multiphysics. Figuring out the flow mechanism is of great significance for the efficient development of shale gas. In this paper, an apparent permeability model which covers conti...
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| Language: | English |
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Wiley
2019-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2019/7387234 |
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| author | Xun Yan Jing Sun Dehua Liu |
| author_facet | Xun Yan Jing Sun Dehua Liu |
| author_sort | Xun Yan |
| collection | DOAJ |
| description | The complexity of the gas transport mechanism in microfractures and nanopores is caused by the feature of multiscale and multiphysics. Figuring out the flow mechanism is of great significance for the efficient development of shale gas. In this paper, an apparent permeability model which covers continue, slip, transition, and molecular flow and geomechanical effect was presented. Additionally, a mathematical model comprising multiscale, geomechanics, and adsorption phenomenon was proposed to characterize gas flow in the shale reservoir. The aim of this paper is to investigate some important impacts in the process of gas transportation, which includes the shale stress sensitivity, adsorption phenomenon, and reservoir porosity. The results reveal that the performance of the multistage fractured horizontal well is strongly influenced by stress sensitivity coefficient. The cumulative gas production will decrease sharply when the shale gas reservoir stress sensitivity coefficient increases. In addition, the adsorption phenomenon has an influence on shale gas seepage and sorption capacity; however, the effect of adsorption is very weak in the early gas transport period, and the impact of later will increase. Moreover, shale porosity also greatly affects the shale gas transportation. |
| format | Article |
| id | doaj-art-adde592940bf4d609ce44ca2e42e133f |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-adde592940bf4d609ce44ca2e42e133f2025-02-03T01:12:09ZengWileyJournal of Chemistry2090-90632090-90712019-01-01201910.1155/2019/73872347387234Numerical Simulation of Shale Gas Multiscale Seepage Mechanism-Coupled Stress SensitivityXun Yan0Jing Sun1Dehua Liu2School of Petroleum Engineering, Yangtze University, Wuhan 434023, Hubei, ChinaSchool of Petroleum Engineering, Yangtze University, Wuhan 434023, Hubei, ChinaSchool of Petroleum Engineering, Yangtze University, Wuhan 434023, Hubei, ChinaThe complexity of the gas transport mechanism in microfractures and nanopores is caused by the feature of multiscale and multiphysics. Figuring out the flow mechanism is of great significance for the efficient development of shale gas. In this paper, an apparent permeability model which covers continue, slip, transition, and molecular flow and geomechanical effect was presented. Additionally, a mathematical model comprising multiscale, geomechanics, and adsorption phenomenon was proposed to characterize gas flow in the shale reservoir. The aim of this paper is to investigate some important impacts in the process of gas transportation, which includes the shale stress sensitivity, adsorption phenomenon, and reservoir porosity. The results reveal that the performance of the multistage fractured horizontal well is strongly influenced by stress sensitivity coefficient. The cumulative gas production will decrease sharply when the shale gas reservoir stress sensitivity coefficient increases. In addition, the adsorption phenomenon has an influence on shale gas seepage and sorption capacity; however, the effect of adsorption is very weak in the early gas transport period, and the impact of later will increase. Moreover, shale porosity also greatly affects the shale gas transportation.http://dx.doi.org/10.1155/2019/7387234 |
| spellingShingle | Xun Yan Jing Sun Dehua Liu Numerical Simulation of Shale Gas Multiscale Seepage Mechanism-Coupled Stress Sensitivity Journal of Chemistry |
| title | Numerical Simulation of Shale Gas Multiscale Seepage Mechanism-Coupled Stress Sensitivity |
| title_full | Numerical Simulation of Shale Gas Multiscale Seepage Mechanism-Coupled Stress Sensitivity |
| title_fullStr | Numerical Simulation of Shale Gas Multiscale Seepage Mechanism-Coupled Stress Sensitivity |
| title_full_unstemmed | Numerical Simulation of Shale Gas Multiscale Seepage Mechanism-Coupled Stress Sensitivity |
| title_short | Numerical Simulation of Shale Gas Multiscale Seepage Mechanism-Coupled Stress Sensitivity |
| title_sort | numerical simulation of shale gas multiscale seepage mechanism coupled stress sensitivity |
| url | http://dx.doi.org/10.1155/2019/7387234 |
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