Authors: M.S. Plaksin, R.I. Rodin, G.V. Ivanov, A.V. Shinkevich

Title of the article: Development of a method for evaluating the gas kinetic and energy characteristics of natural coal

Year: 2024, Issue: 1, Pages: 82-91

Branch of knowledge: 2.8.6. Geomechanics, destruction of rocks by explosion, mine aerogasdynamics and mining thermophysics

Index UDK: 622.143.1

DOI: 10.26730/1999-4125-2024-1-82-91

Abstract: The article notes that modern methods for determining the gas content of a coal seam have a number of disadvantages that reduce the quality of forecasting the process of methane formation, because they do not properly take into account its gas kinetic properties, primarily in the process of coal destruction during sampling. A new approach is proposed to determine the gas kinetic and energy characteristics of coal samples using the capabilities of an innovative sampling method. The results and stages of laboratory studies are presented on the example of a coal sample S1-03.23-i3,5-1, taken in an isolated (from the atmosphere of the production) mode using a coal gas content measurement device. The stage of methane saturation of a coal sample in a sealed high-pressure flask includes an algorithm of actions necessary to inject methane with a given pressure value, as well as a graphical result of the passage of time in the process of methane sorption by coal. The procedure for performing the stepwise release stage consists in the sequential release of a portion of free methane from a high-pressure flask in order to reduce pressure in the coal-gas system. The result of the stage is to determine the gas kinetic parameters that allow us to evaluate the desorption process in the coal-gas system with partial stress relief in it. The last stage presents the results of an assessment of the gas kinetic, sorption, desorption and energy properties of coal.

Key words: coal sampling gas kinetic and energy properties reservoir gas content sorption and desorption studies

Receiving date: 01.02.2024

Approval date: 15.02.2024

Publication date: 12.03.2024

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