Supervisor：China Geological Survey
Sponsored by：XI'an Center of China Geological Survey
Geological Society of China
| Citation: |
JIA Hailiang，YANG Chunmei，XIAO Kangyong，et al. Hydraulic Fracturing Characteristics and Fracture Mechanism of Granite under High Temperature and Pressure[J]. Northwestern Geology，2025，58（5）：1−13. doi: 10.12401/j.nwg.2025058
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Geothermal energy, as a widely distributed renewable resource, has become a crucial safeguard for humanity's future energy security. Enhanced geothermal systems (EGS), particularly those involving hot dry rock (HDR), hold significant exploitation value due to their vast reserves and characteristics of cleanliness, high efficiency, and renewability. Currently, the extraction of HDR typically requires hydraulic fracturing to create permeable flow channels for heat exchange. Therefore, research on the hydraulic fracturing characteristics and fracture mechanisms of reservoirs is of great importance for the efficient exploitation of HDR resources. This study focuses on granite, a common HDR reservoir, to investigate the hydraulic fracturing characteristics under varying confining pressures and temperatures. The evolution of acoustic emission (AE) characteristics during the fracturing process was analyzed, the fracture propagation patterns were elucidated, the influencing factors of hydraulic fracturing were clarified, and the fracture mechanisms and crack propagation criteria of hydraulic fracturing were revealed. The experimental results demonstrate that: (1) The hydraulic fracturing curves of granite under both room temperature and high temperature can be divided into four stages: borehole water filling, borehole pressure increase, hydraulic fracturing, and fracture propagation. (2) Post-fracturing cracks predominantly propagate along the borehole's depth direction. As the confining pressure increases, the crack length extends, and the fracture path becomes more complex. The fracture propagation modes include intergranular and transgranular fractures. (3) Hydraulic fracturing characteristics are significantly influenced by confining pressure and temperature. At a constant temperature, the breakdown pressure increases with higher confining pressure, exhibiting an approximately linear relationship. Under constant confining pressure, the breakdown pressure rises with increasing temperature, though this correlation is nonlinear. (4) The dominant fracture mechanism in granite hydraulic fracturing is tensile failure, though shear failure characteristics are also observed. The breakdown pressure is influenced by multiple factors, including confining pressure, temperature, and the material properties of the rock. The findings of this study can provide theoretical support for the fracturing design of granite-based geothermal reservoirs.
|
甘一雄, 吴顺川, 任义, 等. 基于声发射上升时间/振幅与平均频率值的花岗岩劈裂破坏评价指标研究[J]. 岩土力学, 2020（7）: 41.
Gan Yixiong, Wu Shunchuan, RenYi et al. Evaluation indexes of granite splitting failure based on RA and AF of AE parameters[J]. Rock and Soil Mechanics,2020(7):41.
|
|
郭亮亮. 增强型地热系统水力压裂和储层损伤演化的试验及模型研究[D]. 吉林大学, 2016.
Guo Liangliang. Test and model research of hydraulic fracturing and reservoir damage evolution in Enhanced Geothermal System[D]. Jilin University, 2016.
|
|
胡剑, 苏正, 吴能友, 等. 增强型地热系统热流耦合水岩温度场分析[J]. 地球物理学进展, 2014, 29（3）: 1391−1398.
Hu Jian, Su Zheng, WuNengyou et al. Analysis on temperature fields of thermal-hydraulic coupled fluid and rock in Enhanced Geothermal System[J]. Progress in Geophysics,2014,29(3):1391−1398.
|
|
李全贵, 邓羿泽, 胡千庭, 等. 煤岩水力压裂物理试验研究综述及展望[J]. 煤炭科学技术, 2022, 50（12）: 62−72.
Li Quangui, Deng Yize, Hu Qianting et al. Review and prospect of coal rock hydraulie fracturing physical experimental research[J]. Coal Science and Technology,2022,50(12):62−72.
|
|
李馨馨, 李典庆, 徐轶. 地热对井系统裂隙岩体三维渗流传热耦合的等效模拟方法[J]. 工程力学, 2019, 36（7）: 10.
LI Xinxin, LI Dianqing, XU Yi. Equivalent simulation method of three-dimensional seepage and heat transfer coupling in fractured rock mass of geothermal-borehole system[J]. Engineering Mechanics,2019,36(7):10.
|
|
雷治红. 青海共和盆地干热岩储层特征及压裂试验模型研究[D]. 吉林大学, 2020.
Lei Zhihong. Study on the characteristics of hot dry rock reservoir and fracturing test model in the Gonghe Basin, Qinghai Province[D]. Jilin University, 2020.
|
|
马兵. 热固耦合下储层岩石的地质力学特性及损伤演化规律研究[D]. 重庆大学, 2019.
Ma Bing. Study on Geomechanical Behavior and Damage Evolution of Reservoir Rock under Thermo-mechanical Coupling[D]. Chongqing University, 2019.
|
|
谢紫霄, 黄中伟, 熊建华, 等. 天然裂缝对干热岩水力压裂裂缝扩展的影响规律[J]. 天然气工业, 2022(042-004).
Xie Zixiao,Huang Zhongwei,Xiong Jianhua et al. Influence of natural fractures on the propagation of hydraulie fractures in hot dry rock[J]. Natural Gas Industry,2022(042-004).
|
|
熊峰. 裂隙岩体非线性渗流特性及水热耦合模拟研究[D]. 武汉大学, 2020.
XiongFeng. Study on nonlinear flow behaviors and coupled hydro-thermal simulation of fractured rock masses[D]. Wuhan University, 2020.
|
|
Chen Y, Nagaya Y, Ishida T. Observations of Fractures Induced by Hydraulic Fracturing in Anisotropic Granite[J]. Rock Mechanics Rock Engineering,2015(4):48.
|
|
Deng J Q, Lin C, Yang Q, et al. Investigation of directional hydraulic fracturing based on true tri-axial experiment and finite element modeling[J]. Computers and Geotechnics,2016,75:28−47. doi: 10.1016/j.compgeo.2016.01.018
|
|
Fan T-G, Zhang G-Q. Laboratory investigation of hydraulic fracture networks in formations with continuous orthogonal fractures[J]. Energy,2014,74:164−173. doi: 10.1016/j.energy.2014.05.037
|
|
He J, Lin C, Li X, et al. Initiation, propagation, closure and morphology of hydraulic fractures in sandstone cores[J]. Fuel,2017,208:65−70. doi: 10.1016/j.fuel.2017.06.080
|
|
Kumari W G P, Ranjith P G, Perera M S A, et al. Hydraulic fracturing under high temperature and pressure conditions with micro CT applications: Geothermal energy from hot dry rocks[J]. Fuel,2018,230:138−154. doi: 10.1016/j.fuel.2018.05.040
|
|
Kumari W G P, Ranjith P G, Perera M S A, et al. Experimental investigation of quenching effect on mechanical, microstructural and flow characteristics of reservoir rocks: Thermal stimulation method for geothermal energy extraction[J]. Journal of Petroleum Science and Engineering,2018,162:419−433. doi: 10.1016/j.petrol.2017.12.033
|
|
Lin C, He J, Li X, et al. An Experimental Investigation into the Effects of the Anisotropy of Shale on Hydraulic Fracture Propagation[J]. 2017.
|
|
Lin C, He J, Li X, et al. An Experimental Investigation into the Effects of the Anisotropy of Shale on Hydraulic Fracture Propagation[J]. Rock Mechanics and Rock Engineering,2017,50(3):543−554. doi: 10.1007/s00603-016-1136-4
|
|
Mao R B, Feng Z J, Liu Z H, et al. Laboratory hydraulic fracturing test on large-scale pre-cracked granite specimens[J]. Journal of Natural Gas Science and Engineering, 2017: 278−286.
|
|
Sebastian B, Michael M, Ferdinand S C, et al. Hydraulic and Sleeve Fracturing Laboratory Experiments on 6 Rock Types, Andrew P B, John M, Rob J, editor, Effective and Sustainable Hydraulic Fracturing, 2013: Ch. 20.
|
|
Shao H, Kabilan S, Childers M I, et al. Environmentally friendly, rheoreversible, hydraulic fracturing fluids for enhanced geothermal systems[J]. Geothermics,2018,58(Mar.):72.
|
|
Stephen, Rassenfoss. Digging Up New Information On What Fractures Really Look Like[J]. Journal of Petroleum Technology,2018,70(3):38−39.100.
|
|
Tan P, Jin Y, Han K, et al. Analysis of hydraulic fracture initiation and vertical propagation behavior in laminated shale formation[J]. Fuel,2017,206:482−493. doi: 10.1016/j.fuel.2017.05.033
|
|
Zhuang L, Kim K Y, Jung S G, et al. Effect of Water Infiltration, Injection Rate and Anisotropy on Hydraulic Fracturing Behavior of Granite[J]. 2018(3): 1-15.
|
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