Framework for innovative determination of natural gas content in coal seams

Abstract

Abstract The article discusses the development framework of the method and device for high-accuracy measurement of coal seam gas content. It is proposed to design a device ensuring full measurement of gas content of coal core from the moment of coring (drilling at a distance of 4 – 6 m from coal boundary in the gateway face) to sealing of a core in the thermobaric flask (chips reception container). The results obtained using thermobaric flasks are essential. For another thing, the authors consider the requirements imposed on a portable flow rate meter and on the device for gas measurement and recording during drilling in coal seam. The anticipated difficulties in determination of volume of gas release from borehole walls in the total volume of gas measured during drilling are described. Alongside with the production benefits, the device being developed will provide determination of up to 20 gas-kinetic and gas-dynamic characteristics of coal, which can offer new knowledge on the nature of coal-and-methane substance.