Debit Gas in Well as a Comprehensive Indicator of Gas Permeability of the Coal Seam

DOI

10.2991/coal-16.2016.36How to use a DOI?

Keywords

coal seam wells, gas permeability, fracture system, filtration, methane.

Abstract

The possibility of determining the coefficient of permeability of coal seams on debit degasification wells with different orientation with respect to the main fracture systems based on the Darcy law for a fractured porous media. The technique of calculating the permeability coefficient of coal seams in their natural state on the basis of measured values of gas emission from the inner surface of the wells. The concept of permeability tensor and its relationship with the system of cracks in the coal array. The comparative evaluation of gas permeability coefficients calculated for certain strata of Kuzbass in different directions vectors of gas flows. It is recommended to use the proposed methodology for the design of degassing prepared for extraction of coal seams in order to reduce the natural gas content to a predetermined level ensuring the safety of underground coal mining.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Leonid Shevchenko
PY  - 2016/10
DA  - 2016/10
TI  - Debit Gas in Well as a Comprehensive Indicator of Gas Permeability of the Coal Seam
BT  - Proceedings of the 8th Russian-Chinese Symposium “Coal in the 21st Century: Mining, Processing, Safety"
PB  - Atlantis Press
SP  - 183
EP  - 186
SN  - 2352-5401
UR  - https://doi.org/10.2991/coal-16.2016.36
DO  - 10.2991/coal-16.2016.36
ID  - Shevchenko2016/10
ER  -