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Zhaobin Zhang, Xiao Li and Jianming He
As hydraulic fracturing is a fluid-rock coupling process, the permeability of the hydraulic-stimulated fracture network in the initial stage has great effects on the propagation of the hydraulic fracture network in the following stages. In this work, the...
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Zhaobin Zhang, Xiao Li and Jianming He
Pág. 1 - 14
As hydraulic fracturing is a fluid-rock coupling process, the permeability of the hydraulic-stimulated fracture network in the initial stage has great effects on the propagation of the hydraulic fracture network in the following stages. In this work, the...
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Xiaoyu Tang, Wen Wan, Zhenxing Lu and Wei Chen
To investigate the influence of non-singular terms (T stress) in the stress field on the composite fractures of hard rock Type I?II, such as rock splitting failure and hydraulic fracture propagation, this study focused on hard rocks in metallic mines. Th...
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Shuaifang Guo, Yunxing Cao, Li Wang, Xinsheng Zhang, Wenying Zhang, Haixiao Lin, Zhengzheng Cao and Bingbing Meng
Confining stress response is considered an accompanying behavior of hydraulic fracturing. Along these lines, an evaluation model of confining stress response was presented in this work. It was established on a rock representative volume element (RVE) and...
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Chunlin Zhong, Kangsheng Xue, Yakun Wang, Peng Luo and Xiaobo Liu
Understanding the fluid pattern is of special significance for estimating the hydraulic conductivity of fractured rock masses. The nonlinearity of fluid flow in discrete fracture networks (DFNs) originates from inertial effects and is enhanced by complex...
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Liming Zhang, Xingyu Zhou, Jijia Sun, Peiyin Jiang, Zhihao Lu and Cheng Cheng
The stimulated reservoir volume (SRV) technology extends conventional fracturing technology. Understanding how to effectively and accurately determine modified fracture shape and volume is the key point to evaluating the stimulation effect. Using electro...
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Shihao Wang, Xiangyu Yu, Philip H. Winterfeld and Yu-Shu Wu
Real-time simulation of hydraulic fracturing operations is of critical importance to the field-scale stimulation applications. In this paper, we present an efficient yet reasonably accurate program for the numerical modeling of dynamic fractures. Our pro...
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George Xiroudakis, George Saratsis and Ilias Lazos
This paper uses the displacement discontinuity method, one of the boundary element methods, to solve two major engineering problems. The first one addresses the safe design of underground excavations in fractured rock masses. The implemented method was u...
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Yiwei Liu, Yi Hu and Yong Kang
Natural fractures play a significant role in creating a fracture network simulation treatment. In this work, global cohesive elements were incorporated into the cohesive zone method to realize the unprompted propagation of a hydraulic fracture. The step-...
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Zhi Li, Haoyu Mao, Biao Li, Xiang Zhou, Guo Liao and Jianjun Chen
Numerous large hydropower projects have been built, are being built, or are planned to be developed in southwest China as a result of the increasing demand for clean energy in China?s social and economic development. Based on engineering geological data,...
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Nediljka Gaurina-Medimurec, Vladislav Brkic, Matko Topolovec and Petar Mijic
Hydraulic fracturing operations are performed to enhance well performance and to achieve economic success from improved production rates and the ultimate reserve recovery. To achieve these goals, fracturing fluid is pumped into the well at rates and pres...
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Lisa Maria Ringel, Márk Somogyvári, Mohammadreza Jalali and Peter Bayer
Fractures serve as highly conductive preferential flow paths for fluids in rocks, which are difficult to exactly reconstruct in numerical models. Especially, in low-conductive rocks, fractures are often the only pathways for advection of solutes and heat...
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Zhengxing Wang, Jutao Hao, Jian Yang, Yan Cao, Xiulin Li and Shijia Liu
In this paper, we experiment on the hydraulic fracturing of asphalt concrete with a voids content higher than 3%, which has arisen from the possible local shear dilatancy of Quxue asphalt?s core wall of concrete core dam, the highest one of the sort cons...
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Yulong Chen, Qingxiang Meng and Jianwei Zhang
This study focused on the effects of the notch angle, notch length, and injection rate on hydraulic fracturing. True triaxial hydraulic fracturing experiments were conducted with 300 × 300 × 300 mm cement mortar blocks. The test results showed that the f...
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Wei Zhu, Xu Chang, Yibo Wang, Hongyu Zhai and Zhenxing Yao
The knowledge of hydraulic fracture morphology is significant for the analysis of fracture mechanisms. This paper utilizes passive Ultrasonic Travel-time Tomography (UTT) to characterize the hydraulic fracture. We constructed a velocity model based on X-...
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Tiankui Guo, Zhanqing Qu, Facheng Gong and Xiaozhi Wang
Conventional hydraulic fracturing is not effective in target oil development zones with available wellbores located in the azimuth of the non-maximum horizontal in-situ stress. To some extent, we think that the radial hydraulic jet drilling has the funct...
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Jae-Yeol Cheong, Se-Yeong Hamm, Doo-Hyun Lim and Soo-Gin Kim
In instances of damage to engineered barriers containing nuclear waste material, surrounding bedrock is a natural barrier that retards radionuclide movement by way of adsorption and delay due to groundwater flow through highly tortuous fractured rock pat...
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Zhaobin Zhang and Xiao Li
Shear fracture network is important to the hydraulic fracturing treatment of a shale gas reservoir. In this paper, the formation of shear fracture network is investigated by a Displacement Discontinuity Method (DDM) based model. The results show that the...
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Sascha Frank, Thomas Heinze, Mona Ribbers and Stefan Wohnlich
Flow and transport processes in fractured systems are not yet fully understood, and it is challenging to determine the respective parameters experimentally. Studies on 10 samples of 2 different sandstones were used to evaluate the reproducibility of trac...
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Jiulong Liu, Shuangbao Han, Fengtian Yang and Dongdong Yue
Dongying?s Paleogene geothermal resources are an important part of the geothermal resources of the Tianjin coastal region. The extent of the geothermal fluid resources and the supply relationship have become increasingly important, and will determine whe...
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