Results 91 to 100 of about 152 (101)

Improvement on gas drainage of soft gassy coal seam with underground hydraulic flushing and fracturing: a case study in Huainan

Arabian Journal of Geosciences, 2020
Ma Yankun
exaly  

Analytical solution and evolution process of gas permeability coefficient on typical hard-soft composite coal seam

Arabian Journal of Geosciences, 2021
Hongbao Zhao, Jinyu Li, Zhao Hongbao
exaly  

Application of ultra-high pressure hydraulic slotting pressure relief and permeability enhancement technology in broken soft coal seam

2022
openaire   +1 more source

Research on Development Characteristics of Micro-Fractures in a Soft Coal Seam Based on the Water-Injection Effect

Chemistry and Technology of Fuels and Oils, 2020
Jingang Wu, Guang Zhang
exaly  

Experimental research on the variational characteristics of vertical stress of soft coal seam in front of mining face

Safety Science, 2012
Zhi-Jun Wang
exaly  

Developing Coalbed Methane in Broken-Soft Coal Seam by Virtual Reservoir Horizontal Wells: A Case Study of Luling Field in Huaibei Mining Area, East China

Springer Series in Geomechanics and Geoengineering, 2020
exaly  

Well Completion Technology Using Screen Pipe for Horizontally- intersected Well in Soft Coal Seam

Procedia Engineering, 2014
Zhijun Shi, Shijun Hao, Jianlin Liu
exaly  

Rapid regional outburst elimination technology in soft coal seam with soft roof and soft floor

Safety Science, 2012
Fajun Zhao
exaly  

A new technology for the drilling of long boreholes for gas drainage in a soft coal seam

Journal of Petroleum Science and Engineering, 2016
exaly  

Practice and Drilling Technology of Gas Extraction Borehole in Soft Coal Seam

Procedia Earth and Planetary Science, 2011
exaly