Determination of filtration properties of coal seams during mine measurements

Abstract

A brief analytical review about the issue status on monitoring the filtration properties changes of a coal rock massif under the influence of hydrodynamic impact, undertaken with the purpose to stimulate gas recovery from coal seams, is given. The necessity of improving methods and equipment used to determine the near borehole zone permeability is substantiated. The design features of a device designed to connect an electronic pressure gauge to a borehole to provide continuous monitoring of pressure fluctuation in horizontal degasification wells during injection tests are presented. The results of coal seams permeability measuring undertaken in conditions of Kuzbass mines are presented and discussed.