Actual structural and tectonic peculiarities of gas occurrences within the Donbas coal rock massifs were formed under influence of the tectonic processes taken place during four stages of tectogenesis from Permian to Neogene times. Those tectonic processes changed hypsometric levels of the structures in coal measures. Present-day gas potential of coal-bearing strata was formed mainly by spatial re-distribution of gases produced during coal maturation and those ones migrated upward from deeper horizons. Coalbed methane of coal-bearing rock massifs is a powerful unconventional source of hydrocarbons thus the production of methane from gas-bearing coal fields is an additional resource for energy supply in this country.
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