Results 131 to 140 of about 1,645,202 (341)

Investigation on hard‐rock breaking performance and auxiliary mechanism of picks assisted with both‐sided high‐pressure water jets

Deep Underground Science and Engineering, EarlyView.
This paper investigates the high‐pressure water jet‐pick combined rock‐breaking mode (HPC), which employs high‐pressure water jets to precut grooves on both sides of the picks. The rock‐breaking patterns and performance of the HPC method are obtained, and the auxiliary rock‐breaking mechanism of water jet grooving is revealed.
Jingjing Lu, Jiancheng Xiao, Hui Zhou, Xiao Ma, Congcong Hou, Jian Cui, Fujian Yang   +6 more
wiley   +1 more source

Research and application of pressure relief technology for fracturing thick hard roof in super-high mining face

Meitan xuebao
Aiming at the problems of super-large mining space, strong ore pressure and ultra-high coal wall stability control faced by full-mechanized mining face with ultra-large mining height and thick hard roof, this paper takes the 122104 working face of ...
Yajun LEI, Yanjun FENG, Hongpu KANG, Futang ZHAO, Xiaoguang SHANG, Rui WANG, Peng WANG, Zhen ZHANG, Jianchao REN, Kaikai ZHAO, Yangfa ZHENG, Xiaogang LIU   +11 more
doaj   +1 more source

3D Simulation of Stimulated Rock Volume Evolution during Hydraulic Fracturing

, 2019
Hydraulic fracturing in naturally fractured rocks often leads to the creation of a stimulated zone of enhanced permeability in which the target formation is irreversibly deformed through shear dilation of natural fractures, plastic deformation, and ...
Sarvaramini, Erfan
core  

Slip versus dilation tendency parameter space as a tool for prospecting structurally controlled geothermal systems in greenfield: insights from the greater Ruhr region

Deep Underground Science and Engineering, EarlyView.
This study highlights that with the static and time‐dependent evolution of slip versus dilation tendency parameter space, structurally controlled deep geothermal systems can be selected within areas of higher permeability and lower seismic hazard. Abstract Faults play a vital role in the Earth's hydraulic system by facilitating fluid flow when dilating
Michal Kruszewski, Alessandro Verdecchia, Oliver Heidbach, Rebecca M. Harrington, David Healy   +4 more
wiley   +1 more source

Treatment of hydraulic fracturing fluids in petroleum wastewater using physical and biological techniques

, 2016
Hydraulic fracturing (‘fracking’) is a drilling and extraction technique that uses large volumes of high-pressure, chemically-treated water to free petroleum and natural gas trapped deep in underground strata.
Alalade, Oludamilola Olusesan
core  

Effective and Sustainable Hydraulic Fracturing

, 2013
This book comprises the proceedings for the International Conference for Effective and Sustainable Hydraulic Fracturing (HF2013) which was held 20-22 May 2013 in Brisbane, Australia. The conference goal was to advance hydraulic fracturing technology that

core   +1 more source

Random finite element analysis on ground subsidence caused by tunnel excavation in karst regions with spatial variable soil

Deep Underground Science and Engineering, EarlyView.
This study investigates ground subsidence during tunnel excavation in karst areas, highlighting the combined effects of karst cave proximity, cave size, and soil spatial variability. Findings suggest that shorter cave distances and larger cave sizes increase subsidence variability, and a modified Peck formula is proposed for more accurate subsidence ...
Zhenghong Su, Yong Fu, Miaomiao Sun, Kailin Ding, Ying Zhao   +4 more
wiley   +1 more source

Integrated Modeling of Multi-Stage Hydraulic Fracturing of Low-Permeable Reservoirs

Georesursy
The most effective method for developing lowpermeability reservoirs is multi-stage hydraulic fracturing (MSHF), which is confirmed by its intensive development in Russia.
V. N. Astafyev, G. M. Mitrofanov
doaj   +1 more source

A critical review of the experimental and theoretical research on cyclic hydraulic fracturing for geothermal reservoir stimulation

Geomechanics and Geophysics for Geo-Energy and Geo-Resources, 2021
Ning Li, Heping Xie, Jianjun Hu, Cunbao Li   +3 more
semanticscholar   +1 more source

Development of a three-dimensional compositional hydraulic fracturing simulator for energized fluids

, 2013
textCurrent practices in energized treatments, using gases and foams, remain rudimentary in comparison to other fracturing fluid technologies. None of the available 3D fracturing models for incompressible water-based fluids have been able to capture the ...
Ribeiro, Lionel Herve Noel
core