3D Fracture Propagation Simulation and Pressure Decline Analysis Research for I-Shaped Fracture of Coalbed
After hydraulic fracturing, some treatments intended for production enhancement fail to yield predetermined effects. The main reason is the insufficient research about the fracture propagation mechanism. There is compelling evidence that I-shaped fracture, two horizontal fractures at the junction of...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-08-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/15/16/5811 |
| _version_ | 1797410558887067648 |
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| author | Chengwang Wang Zixi Guo Lifeng Zhang Yunwei Kang Zhenjiang You Shuguang Li Yubin Wang Huaibin Zhen |
| author_facet | Chengwang Wang Zixi Guo Lifeng Zhang Yunwei Kang Zhenjiang You Shuguang Li Yubin Wang Huaibin Zhen |
| author_sort | Chengwang Wang |
| collection | DOAJ |
| description | After hydraulic fracturing, some treatments intended for production enhancement fail to yield predetermined effects. The main reason is the insufficient research about the fracture propagation mechanism. There is compelling evidence that I-shaped fracture, two horizontal fractures at the junction of coalbed and cover/bottom layer, and one vertical fracture in the coalbed have formed in part of the coalbed after hydraulic fracturing. Therefore, this paper aims at I-shaped fracture propagation simulation. A novel propagation model is derived on the basis of a three-dimensional (3D) model, and the coupling conditions of vertical fracture and horizontal fractures are established based on the flow rate distribution and the bottom-hole pressure equality, respectively. Moreover, an associated PDA (pressure decline analysis of post-fracturing) model is established. Both models complement with each other and work together to guide fracturing treatment. Finally, a field case is studied to show that the proposed models can effectively investigate and simulate fracture initiation/propagation and pressure decline. |
| first_indexed | 2024-03-09T04:30:49Z |
| format | Article |
| id | doaj.art-617dd4ef00544f249b2a58a65f7db797 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T04:30:49Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-617dd4ef00544f249b2a58a65f7db7972023-12-03T13:35:04ZengMDPI AGEnergies1996-10732022-08-011516581110.3390/en151658113D Fracture Propagation Simulation and Pressure Decline Analysis Research for I-Shaped Fracture of CoalbedChengwang Wang0Zixi Guo1Lifeng Zhang2Yunwei Kang3Zhenjiang You4Shuguang Li5Yubin Wang6Huaibin Zhen7PetroChina Coalbed Methane Company Limited, Chaoyang, Beijing 100028, ChinaState Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, ChinaPetroChina Xinjiang Oilfield Company Development Company, Karamay 834000, ChinaSchool of Sciences, Southwest Petroleum University, Chengdu 610500, ChinaCentre for Sustainable Energy and Resources, Edith Cowan University, Joondalup, WA 6027, AustraliaPetroChina Coalbed Methane Company Limited, Chaoyang, Beijing 100028, ChinaPetroChina Coalbed Methane Company Limited, Chaoyang, Beijing 100028, ChinaPetroChina Coalbed Methane Company Limited, Chaoyang, Beijing 100028, ChinaAfter hydraulic fracturing, some treatments intended for production enhancement fail to yield predetermined effects. The main reason is the insufficient research about the fracture propagation mechanism. There is compelling evidence that I-shaped fracture, two horizontal fractures at the junction of coalbed and cover/bottom layer, and one vertical fracture in the coalbed have formed in part of the coalbed after hydraulic fracturing. Therefore, this paper aims at I-shaped fracture propagation simulation. A novel propagation model is derived on the basis of a three-dimensional (3D) model, and the coupling conditions of vertical fracture and horizontal fractures are established based on the flow rate distribution and the bottom-hole pressure equality, respectively. Moreover, an associated PDA (pressure decline analysis of post-fracturing) model is established. Both models complement with each other and work together to guide fracturing treatment. Finally, a field case is studied to show that the proposed models can effectively investigate and simulate fracture initiation/propagation and pressure decline.https://www.mdpi.com/1996-1073/15/16/5811I-shaped fracturefracture propagation modelpressure decline analysiscoupling conditionsnumerical method |
| spellingShingle | Chengwang Wang Zixi Guo Lifeng Zhang Yunwei Kang Zhenjiang You Shuguang Li Yubin Wang Huaibin Zhen 3D Fracture Propagation Simulation and Pressure Decline Analysis Research for I-Shaped Fracture of Coalbed Energies I-shaped fracture fracture propagation model pressure decline analysis coupling conditions numerical method |
| title | 3D Fracture Propagation Simulation and Pressure Decline Analysis Research for I-Shaped Fracture of Coalbed |
| title_full | 3D Fracture Propagation Simulation and Pressure Decline Analysis Research for I-Shaped Fracture of Coalbed |
| title_fullStr | 3D Fracture Propagation Simulation and Pressure Decline Analysis Research for I-Shaped Fracture of Coalbed |
| title_full_unstemmed | 3D Fracture Propagation Simulation and Pressure Decline Analysis Research for I-Shaped Fracture of Coalbed |
| title_short | 3D Fracture Propagation Simulation and Pressure Decline Analysis Research for I-Shaped Fracture of Coalbed |
| title_sort | 3d fracture propagation simulation and pressure decline analysis research for i shaped fracture of coalbed |
| topic | I-shaped fracture fracture propagation model pressure decline analysis coupling conditions numerical method |
| url | https://www.mdpi.com/1996-1073/15/16/5811 |
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