Results 11 to 20 of about 465,522 (217)

Evolution of Friction and Permeability in a Propped Fracture under Shear

Geofluids, 2017
We explore the evolution of friction and permeability of a propped fracture under shear. We examine the effects of normal stress, proppant thickness, proppant size, and fracture wall texture on the frictional and transport response of proppant packs ...
Fengshou Zhang, Yi Fang, Derek Elsworth, Chaoyi Wang, Xiaofeng Yang   +4 more
doaj   +2 more sources

Dynamic influence of coal fine intrusion on propped fracture permeability [PDF]

Meitan xuebao
Coal fine intrusion into hydraulic propped fractures of coal seam easily leads to the blockage of the fracture, resulting in the decrease of the conductivity and the reduction of coal reservoir permeability, which seriously affects the stable discharge ...
Xitu ZHANG, Shengyong HU, Xi WU, Guofu LI, Guorui FENG, Yanfeng WANG, Zhaoying CHEN   +6 more
doaj   +2 more sources

Microstructural evolution and hydraulic response of shale self-propped fracture using X-ray computed tomography and digital volume correlation

International Journal of Mining Science and Technology
Methane in-situ explosive fracturing technology produces shale debris particles within fracture channels, enabling a self-propping effect that enhances the fracture network conductivity and long-term stability.
Ting Huang, Cheng Zhai, Ting Liu, Yong Sun, Hexiang Xu, Yu Wang, Jing Huang   +6 more
doaj   +2 more sources

Centrifuge and numerical modelling of twin-propped retaining walls. [PDF]

, 1995
PhDA series of tests on flexible model diaphragm walls embedded in an overconsolidated clay was carried out at the London Geotechnical Centrifuge Centre.
Richards, David John
core   +4 more sources

Fracture toughness characterization of thin Ti/SiC composites [PDF]

, 2011
Titanium based alloys reinforced uniaxially with silicon carbide fibres (Ti/SiC) are advanced and innovative materials for aerospace vehicles.
Ma, Wei
core   +7 more sources

The effect of combined proppants upon the fracture conductivity in tight gas reservoirs

Energy Reports, 2020
Sand and ceramic proppant are the most commonly used materials to keep fractures open during hydraulic fracturing. Ceramic proppant has higher hardness and sphericity than sand, but it is much more expensive.
Xingyuan Liang, Fujian Zhou, Tianbo Liang, Yixiao Huang, Dongya Wei, Shiying Ma   +5 more
doaj   +1 more source

Test and analysis on the permeability of induced fractures in shale reservoirs

Natural Gas Industry B, 2018
In order to improve the effectiveness of shale gas stimulated reservoir volume (SRV), it is necessary to evaluate and study the permeability of different types of induced fractures in shale and its influential factors.
Congbin Yin
doaj   +1 more source

Coupled Hydraulic Fracture and Proppant Transport Simulation

Energies, 2020
This paper focuses on the study of proppant transport mechanisms in fractures during frac-packing operation. A multi-module, numerical proppant, reservoir and geomechanics simulator has been developed, which improves the current numerical modeling ...
Morteza Roostaei, Alireza Nouri, Vahidoddin Fattahpour, Dave Chan   +3 more
doaj   +1 more source

Variation of induced stress field during hydraulic fracture closure and its influence on subsequent fracture

Energy Reports, 2021
After the completion of multi-stage fracturing operation, the fluid pressure in artificial fracture network continues to decrease, resulting in the closure of fracture and the variation of local induced stress field.
Hu Meng, Hongkui Ge, Jie Bai, Xiaoqiong Wang, Jialiang Zhang, Yinghao Shen, Zuodong Zhang   +6 more
doaj   +1 more source

Hydraulic fracturing effect of CBM vertical well and its impact on productivity: a case study of Yaojie Mining Area

Meitan kexue jishu, 2023
CBM reservoir is a typical fracture-controlled gas reservoir, and the scale of fracturing and fracture-filling effect have decisive control on gas well productivity.
Daibing MA, Lichao CHEN
doaj   +1 more source