Study on Effect of Perforation Orientation on Hydraulic Fracturing of Shale
The core technology to realize the development of unconventional oil and gas resources is the large-scale volume transformation of shale reservoirs, but volume fracturing is a complex physical and mechanical process, and its mechanism remains to be further studied. In this paper, starting from the c...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2022/6130848 |
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| _version_ | 1832548611700817920 |
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| author | Jian Li Dong Wang Hongjian Wang Fei Zhao Qingqing Ma Qi Qiao Zhiyang Yao |
| author_facet | Jian Li Dong Wang Hongjian Wang Fei Zhao Qingqing Ma Qi Qiao Zhiyang Yao |
| author_sort | Jian Li |
| collection | DOAJ |
| description | The core technology to realize the development of unconventional oil and gas resources is the large-scale volume transformation of shale reservoirs, but volume fracturing is a complex physical and mechanical process, and its mechanism remains to be further studied. In this paper, starting from the current research status of shale volumetric fracturing, the perforation orientation of volumetric fracturing is numerically simulated by using the finite element software. The following conclusions are drawn: ① when the ground stress conditions are equal, with the increase of perforation angle, the maximum principal stress at the front of perforation decreases gradually; that is, when the perforation is along the horizontal minimum principal stress, the maximum principal stress at the front of perforation is the largest, which is most conducive to fracturing of shale reservoirs. ② When the perforation is along the direction of the horizontal minimum principal stress and the horizontal stress difference is zero, the smaller the horizontal stress, the greater the maximum principal stress at the front of the perforation. Therefore, the smaller the horizontal stress, the more conducive to the rupture of shale reservoirs. ③ When the perforation is along the horizontal minimum principal stress, the maximum principal stress at the front of the perforation increases with the increase of the horizontal stress difference. Therefore, the larger the horizontal stress difference, the more favorable for the fracture of shale reservoirs. |
| format | Article |
| id | doaj-art-74ffe5f49b954821b78cf2fce94cfbbc |
| institution | Kabale University |
| issn | 1468-8123 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-74ffe5f49b954821b78cf2fce94cfbbc2025-02-03T06:13:35ZengWileyGeofluids1468-81232022-01-01202210.1155/2022/6130848Study on Effect of Perforation Orientation on Hydraulic Fracturing of ShaleJian Li0Dong Wang1Hongjian Wang2Fei Zhao3Qingqing Ma4Qi Qiao5Zhiyang Yao6Sinopec Zhongyuan Oilfield BranchSinopec Zhongyuan Oilfield BranchSinopec Zhongyuan Oilfield BranchNorth China University of Water Resources and Electric PowerSinopec Zhongyuan Oilfield BranchSinopec Zhongyuan Oilfield BranchSinopec Zhongyuan Oilfield BranchThe core technology to realize the development of unconventional oil and gas resources is the large-scale volume transformation of shale reservoirs, but volume fracturing is a complex physical and mechanical process, and its mechanism remains to be further studied. In this paper, starting from the current research status of shale volumetric fracturing, the perforation orientation of volumetric fracturing is numerically simulated by using the finite element software. The following conclusions are drawn: ① when the ground stress conditions are equal, with the increase of perforation angle, the maximum principal stress at the front of perforation decreases gradually; that is, when the perforation is along the horizontal minimum principal stress, the maximum principal stress at the front of perforation is the largest, which is most conducive to fracturing of shale reservoirs. ② When the perforation is along the direction of the horizontal minimum principal stress and the horizontal stress difference is zero, the smaller the horizontal stress, the greater the maximum principal stress at the front of the perforation. Therefore, the smaller the horizontal stress, the more conducive to the rupture of shale reservoirs. ③ When the perforation is along the horizontal minimum principal stress, the maximum principal stress at the front of the perforation increases with the increase of the horizontal stress difference. Therefore, the larger the horizontal stress difference, the more favorable for the fracture of shale reservoirs.http://dx.doi.org/10.1155/2022/6130848 |
| spellingShingle | Jian Li Dong Wang Hongjian Wang Fei Zhao Qingqing Ma Qi Qiao Zhiyang Yao Study on Effect of Perforation Orientation on Hydraulic Fracturing of Shale Geofluids |
| title | Study on Effect of Perforation Orientation on Hydraulic Fracturing of Shale |
| title_full | Study on Effect of Perforation Orientation on Hydraulic Fracturing of Shale |
| title_fullStr | Study on Effect of Perforation Orientation on Hydraulic Fracturing of Shale |
| title_full_unstemmed | Study on Effect of Perforation Orientation on Hydraulic Fracturing of Shale |
| title_short | Study on Effect of Perforation Orientation on Hydraulic Fracturing of Shale |
| title_sort | study on effect of perforation orientation on hydraulic fracturing of shale |
| url | http://dx.doi.org/10.1155/2022/6130848 |
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