Study of the migration processes in the roof of an underground gas-generator


  • O. V. Inkin
  • N. I. Dereviahina
Keywords: ground water, underground coal gasification, migration of coolants, underground gas-generator, thermal energy

Abstract

Currently, coal is the main natural energy carrier in Ukraine due to its limited resources of oil and natural gas. A promising method for extracting coal is underground gasification using thermochemical and mass-exchange processes. This study was aimed at the investigation of migration processes in the roof rock of an underground gas-generator through developing a physicalmathematical model of migration of gasification products in the roof rocks of an underground gas-generator. We have substantiated the technological measures directed to eliminating the hydrocarbon zones, with additional extraction of useful products. We suggest a physical-mathematical model of migration of gasification processes in the roof rocks of an underground gas-generator, which allows elimination of hydrocarbon zones with additional extraction of useful products. We determined the pattern of the changes in the excess pressure and temperature during the processes of gasification in overburden, moisture content of the gas during its seepage through the roof rocks, and also colmatage of the porous space. Using the results, we improved the UCG technology by using the condensing products of gasification in the overburden.

Author Biographies

O. V. Inkin
“Dnipro Polytechnic” National Technical University
N. I. Dereviahina
“Dnipro Polytechnic” National Technical University

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Published
2018-03-30
How to Cite
Inkin, O., & Dereviahina, N. (2018). Study of the migration processes in the roof of an underground gas-generator. Journal of Geology, Geography and Geoecology, 26(1), 64-70. https://doi.org/https://doi.org/10.15421/111807