Numerical Investigation of Influential Factors in Hydraulic Fracturing Processes Using Coupled Discrete Element-Lattice Boltzmann Method
文献类型：期刊论文
| 作者 | Zhu, Weiwei1,3; Chen, Zhiqiang2; He, Xupeng4; Tian, Zhiguo3; Wang, Moran3 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
 |
| 出版日期 | 2023-09-01 |
| 卷号 | 128期号:9页码:22 |
| 关键词 | hydraulic fracturing fracture network discrete element method lattice Boltzmann method |
| ISSN号 | 2169-9313 |
| DOI | 10.1029/2023JB027292 |
| 英文摘要 | Hydraulic fracturing is widely used to stimulate unconventional reservoirs, but a systematic and comprehensive investigation into the hydraulic fracturing process is insufficient. In this work, a discrete element-lattice Boltzmann method is implemented to simulate the hydro-mechanical behavior in a hydraulic fracturing process. Different influential factors, including treatment parameters (injection rates and fluid viscosity), formation parameters (in situ stress states and natural fractures) and rock properties (heterogeneity of rock strengths and rock permeability), are considered and their impacts on the initiation and propagation of hydraulic fractures are evaluated. A higher injection rate, increased viscosity, and larger in situ stress will lead to an increase in the initiation pressure. Conversely, higher formation permeability and a greater degree of heterogeneity in bond strengths will result in a decrease in the initiation pressure. The complexity of generated fractures is significantly influenced by the injection rate and degree of heterogeneity. However, fluid viscosity, in situ stress states, and formation permeability individually do not affect the geometrical complexity. Shear displacement can occur during a hydraulic fracturing process due to increased pore pressure and variations in in situ stress caused by injected fluid. Low-viscosity fluid with a high injection rate can have a significant pressure buildup and generate complex fracture networks in low-permeability heterogeneous formations. Natural fractures can significantly impact the complexity of generated fractures, while more in-depth research is required regarding complex natural fracture distributions. Hydraulic fracturing technique is essential for the development of unconventional reserves, such as shale gas/oil and geothermal reservoirs. To optimize field operations and properly estimate the stimulation reservoir volume, it is necessary to investigate the impact of influential factors. In this work, we adopt a numerical scheme (DEM-LBM) to investigate the process in detail and consider as many factors as possible, including treatment parameters (injection rates and fluid viscosity), formation parameters (in situ stress states and preexisting natural fractures), and rock properties (heterogeneity of rock strengths and rock permeability). The impacts of those influential factors on the initiation and propagation of hydraulic fractures are evaluated. We find that all factors have a significant impact on fracture initiation pressure. However, the complexity of generated fractures is mainly affected by injection rates and heterogeneity degrees of rock strengths. The combination of low-viscosity fluid and a high injection rate can result in the generation of a much more complex fracture network in a low-permeability heterogeneous formation. The existence of natural fractures can significantly influence the complexity of the generated fracture networks. Further research on natural fracture networks is feasible based on the foundation established in this work. Different influential factors have significant impacts on the initiation pressureExistence of natural fractures, high injection rates and heterogeneity degrees increase the geometrical complexity of fracturesLow-viscosity fluid combined with a high injection rate leads to a complex fracture network in low-permeability heterogeneous formation |
| WOS关键词 | INJECTION RATE ; FLUID ; PROPAGATION ; SIMULATION ; ENERGY ; MODEL ; INITIATION ; VISCOSITY ; CRACKS ; ROCK |
| 资助项目 | This project was supported by the National Key Research and Development Program of China (No. 2019YFA0708704). The numerical simulation is supported by the High Performance Computing Center at Tsinghua University. Furthermore, the authors would like to tha[2019YFA0708704] ; National Key Research and Development Program of China ; High Performance Computing Center at Tsinghua University |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001077413700003 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | This project was supported by the National Key Research and Development Program of China (No. 2019YFA0708704). The numerical simulation is supported by the High Performance Computing Center at Tsinghua University. Furthermore, the authors would like to tha ; This project was supported by the National Key Research and Development Program of China (No. 2019YFA0708704). The numerical simulation is supported by the High Performance Computing Center at Tsinghua University. Furthermore, the authors would like to tha ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; High Performance Computing Center at Tsinghua University ; High Performance Computing Center at Tsinghua University ; This project was supported by the National Key Research and Development Program of China (No. 2019YFA0708704). The numerical simulation is supported by the High Performance Computing Center at Tsinghua University. Furthermore, the authors would like to tha ; This project was supported by the National Key Research and Development Program of China (No. 2019YFA0708704). The numerical simulation is supported by the High Performance Computing Center at Tsinghua University. Furthermore, the authors would like to tha ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; High Performance Computing Center at Tsinghua University ; High Performance Computing Center at Tsinghua University ; This project was supported by the National Key Research and Development Program of China (No. 2019YFA0708704). The numerical simulation is supported by the High Performance Computing Center at Tsinghua University. Furthermore, the authors would like to tha ; This project was supported by the National Key Research and Development Program of China (No. 2019YFA0708704). The numerical simulation is supported by the High Performance Computing Center at Tsinghua University. Furthermore, the authors would like to tha ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; High Performance Computing Center at Tsinghua University ; High Performance Computing Center at Tsinghua University ; This project was supported by the National Key Research and Development Program of China (No. 2019YFA0708704). The numerical simulation is supported by the High Performance Computing Center at Tsinghua University. Furthermore, the authors would like to tha ; This project was supported by the National Key Research and Development Program of China (No. 2019YFA0708704). The numerical simulation is supported by the High Performance Computing Center at Tsinghua University. Furthermore, the authors would like to tha ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; High Performance Computing Center at Tsinghua University ; High Performance Computing Center at Tsinghua University |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/110630]  |
| 专题 | 地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室 |
| 通讯作者 | Wang, Moran |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing, Peoples R China 2.SINOPEC, Petr Explorat & Prod Res Inst, Beijing, Peoples R China 3.Tsinghua Univ, Dept Engn Mech, Beijing, Peoples R China 4.EXPEC Adv Res Ctr, Saudi Aramco, Dhahran, Saudi Arabia |
| 推荐引用方式 GB/T 7714 | Zhu, Weiwei,Chen, Zhiqiang,He, Xupeng,et al. Numerical Investigation of Influential Factors in Hydraulic Fracturing Processes Using Coupled Discrete Element-Lattice Boltzmann Method[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2023,128(9):22. |
| APA | Zhu, Weiwei,Chen, Zhiqiang,He, Xupeng,Tian, Zhiguo,&Wang, Moran.(2023).Numerical Investigation of Influential Factors in Hydraulic Fracturing Processes Using Coupled Discrete Element-Lattice Boltzmann Method.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,128(9),22. |
| MLA | Zhu, Weiwei,et al."Numerical Investigation of Influential Factors in Hydraulic Fracturing Processes Using Coupled Discrete Element-Lattice Boltzmann Method".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 128.9(2023):22. |
入库方式： OAI收割
来源：地质与地球物理研究所
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