Novel Chemical Stimulation Techniques to Enhance Coal Permeability for Coal Seam Gas Extraction

2013 ◽  
Author(s):  
Karen M. Steel ◽  
Stephen Pell ◽  
Luc G. Turner
Keyword(s):  
Coal Seam ◽  
Chemical Stimulation ◽  
Gas Extraction ◽  
Coal Seam Gas ◽  
Coal Permeability

Experimental Study on Deep Borehole Pre-Cracking Blasting of Drilling through Strata at Low Permeability Seam

2013 ◽  
Vol 868 ◽  
pp. 339-342
Author(s):  
Jian Liu ◽  
Qian Le
Keyword(s):  
Coal Seam ◽  
Control Area ◽  
Low Permeability ◽  
Gas Extraction ◽  
Test Results ◽  
Deep Borehole ◽  
Coal Seam Gas ◽  
Gas Concentration ◽  
Working Face ◽  
Outburst Coal Seam

In the process of roadway excavation in the low permeability outburst coal seam, with drilling through strata in the bottom drainage roadway extracting coal seam gas of control area. In order to improve extraction effect, the method that deep borehole pre-cracking blasting is used to increase the permeability of coal in the drilling through strata seam segment is proposed. The calculation formula on crushing circle and crack circle radius of deep borehole pre-cracking blasting are derived, and the effective loosening radius of blasting is calculated in theory, the research achievements are applied to field test, the test results show that deep borehole pre-cracking blasting permeability improvement technology is carried out in the drilling through strata of the low permeability outburst coal seam, the permeability of coal seam is improved by 180 times, the gas extraction scalar is raised by 8-10 tomes, during the process of roadway excavation, gas concentration of the working face is 0.2%-0.3%, and tunneling footage is increased by 2 times.

Pore-Scale Numerical Investigation on Chemical Stimulation in Coal and Permeability Enhancement for Coal Seam Gas Production

2016 ◽  
Vol 116 (1) ◽  
pp. 335-351 ◽  
Author(s):  
Jinfang Gao ◽  
Huilin Xing ◽  
Luc Turner ◽  
Karen Steel ◽  
Mohamed Sedek ◽  
...  
Keyword(s):  
Coal Seam ◽  
Numerical Investigation ◽  
Gas Production ◽  
Chemical Stimulation ◽  
Pore Scale ◽  
Coal Seam Gas ◽  
Permeability Enhancement

Fracked: Coal seam gas extraction and farmers’ mental health

2016 ◽  
Vol 47 ◽  
pp. 22-32 ◽  
Author(s):  
Methuen I. Morgan ◽  
Donald W. Hine ◽  
Navjot Bhullar ◽  
Debra A. Dunstan ◽  
Warren Bartik
Keyword(s):  
Mental Health ◽  
Coal Seam ◽  
Gas Extraction ◽  
Coal Seam Gas

Modelling the cumulative impacts of future coal mining and coal seam gas extraction on river flows: applications of methodology

2021 ◽  
pp. 126440
Author(s):  
Neil R. Viney ◽  
David A. Post ◽  
Yongqiang Zhang ◽  
Fazlul Karim ◽  
Santosh K. Aryal ◽  
...  
Keyword(s):  
Coal Seam ◽  
Coal Mining ◽  
Gas Extraction ◽  
Cumulative Impacts ◽  
Coal Seam Gas ◽  
River Flows
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