Jun-ichi Kokado

Studies on the Flow of Methane through Coal Measure Rocks

Studies on the Flow of Methane through Coal Measure Rocks Yoshio HIRAMATSU, Jun-ichi KOKADO and Masaru DANNO In order to present fundamental data for the theoretical research on the gas drainage practice, the authors have carried out experimental as well as theoretical studies on the flow of methane through coal measure rocks, and have obtained Eq.(7) strictly representing the relation among the quantity of gas, the pressure gradient, the length of flow and so on. They have found that the Darcys law is applicable fairly well and have presented Eqs.(12) and (13) for practical use, with the charts to determine the permeability direct from the results of measurement.