Coal Reservoir Properties And Assessing Coalbed Methane Resources Of Xinji No.1Coal Mine

This paper analysis pore development character,pore distribution and specific surface area distribution of No.13-1coal mine,No.11-2coal mine,No.8coal mine and No.6-lcoal mine, by using the Mercury proximate、ASAP2000Automatic adsorption instrument which is based on the character of main coal mine. Noll-2coal mine and No.6-1coal mine are kinds of pores giving priority to fracture by analyzing the connectivity between pores of main coal mine and desorption character that good connectivity can make for migrating methane. The pores in No.13-1coal mine and No.8coal mine which matrix take up most in short of connectivity go against pump drainage. Isothermal adsorption curves of main coal mines can be tested by ISE-100high pressure instruments under equilibrium water, from which we get No,6-lcoal mine and No.8coal mine have more adsorb volume and higher pressure by testing each test point’s coal bed methane LanGeErMiao volume and pressure. It investigates the regularity of distribution on firedamp content about four main coal mines and confirm the lower limit depth of each gas zone of weathering by analyzing coal mine’s physical property. The damp total stock number is178461×104m3which can be mined can reach up to78352×104m3on each mathematic relation model about firedamp content,gas pressure and gas saturation. This paper evaluate objective coal seam gas resource and features extracted on the base of date analyzed about air permeability and drill gas flow rate attenuation coefficient. Xinji No.1coal seam belongs to mined hardly that can get better effects by increasing air permeability measures.