Artificial Interference of Stress Field in a Near-Fracture Zone by Water Injection in a Preexisting Crack
The in situ stress has an important influence on fracture propagation and fault stability in deep formation. However, the development of oil and gas resources can only be determined according to the existing state of in situ stress in most cases. It is passive acceptance of existing in situ stress....
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/2307809 |
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| _version_ | 1832552076309168128 |
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| author | Yongxiang Zheng Jianjun Liu Bohu Zhang |
| author_facet | Yongxiang Zheng Jianjun Liu Bohu Zhang |
| author_sort | Yongxiang Zheng |
| collection | DOAJ |
| description | The in situ stress has an important influence on fracture propagation and fault stability in deep formation. However, the development of oil and gas resources can only be determined according to the existing state of in situ stress in most cases. It is passive acceptance of existing in situ stress. Unfortunately, in some cases, the in situ stress conditions are not conducive to resource development. If the in situ stress can be interfered in some ways, the stress can be adjusted to a more favorable state. In order to explore the method of artificial interference, this paper established the calculation method of the in situ stress around the cracks based on fracture mechanics at first and obtained the redistribution law of the in situ stress. Based on the obtained redistribution law, attempts were made to interfere with the surrounding in situ stress by water injection in the preexisting crack. On this basis, the artificial stress intervention was applied. The results show that artificial interference of stress can effectively be achieved by water injection in the fracture. And changing the fluid pressure in the crack is the most effective way. By stress artificial intervention, critical pressure for water channelling in fractured reservoirs, directional propagation of cracks in hydraulic fracturing, and stress adjustment on the structural plane were applied. This study provides guidance for artificial stress intervention in the exploitation of the underground resource. |
| format | Article |
| id | doaj-art-45d6bc743d094e8b943838005fa4ee4f |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-45d6bc743d094e8b943838005fa4ee4f2025-02-03T05:59:37ZengWileyAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/23078092307809Artificial Interference of Stress Field in a Near-Fracture Zone by Water Injection in a Preexisting CrackYongxiang Zheng0Jianjun Liu1Bohu Zhang2School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, ChinaSchool of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, ChinaSchool of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, ChinaThe in situ stress has an important influence on fracture propagation and fault stability in deep formation. However, the development of oil and gas resources can only be determined according to the existing state of in situ stress in most cases. It is passive acceptance of existing in situ stress. Unfortunately, in some cases, the in situ stress conditions are not conducive to resource development. If the in situ stress can be interfered in some ways, the stress can be adjusted to a more favorable state. In order to explore the method of artificial interference, this paper established the calculation method of the in situ stress around the cracks based on fracture mechanics at first and obtained the redistribution law of the in situ stress. Based on the obtained redistribution law, attempts were made to interfere with the surrounding in situ stress by water injection in the preexisting crack. On this basis, the artificial stress intervention was applied. The results show that artificial interference of stress can effectively be achieved by water injection in the fracture. And changing the fluid pressure in the crack is the most effective way. By stress artificial intervention, critical pressure for water channelling in fractured reservoirs, directional propagation of cracks in hydraulic fracturing, and stress adjustment on the structural plane were applied. This study provides guidance for artificial stress intervention in the exploitation of the underground resource.http://dx.doi.org/10.1155/2019/2307809 |
| spellingShingle | Yongxiang Zheng Jianjun Liu Bohu Zhang Artificial Interference of Stress Field in a Near-Fracture Zone by Water Injection in a Preexisting Crack Advances in Civil Engineering |
| title | Artificial Interference of Stress Field in a Near-Fracture Zone by Water Injection in a Preexisting Crack |
| title_full | Artificial Interference of Stress Field in a Near-Fracture Zone by Water Injection in a Preexisting Crack |
| title_fullStr | Artificial Interference of Stress Field in a Near-Fracture Zone by Water Injection in a Preexisting Crack |
| title_full_unstemmed | Artificial Interference of Stress Field in a Near-Fracture Zone by Water Injection in a Preexisting Crack |
| title_short | Artificial Interference of Stress Field in a Near-Fracture Zone by Water Injection in a Preexisting Crack |
| title_sort | artificial interference of stress field in a near fracture zone by water injection in a preexisting crack |
| url | http://dx.doi.org/10.1155/2019/2307809 |
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