Research on Output Laws of Pulverized Coal During Coalbed Methane Drainage in Hancheng Block

In order to find the impact of the pulverized coal output during coalbed methane drainage on the development of the coalbed methane, taking Hancheng Block as the experimentation area, this paper analyzed the effect of pulverized coal for coalbed methane drainage and the influencing factors of the pulverized coal out put according to the actual situation of pulverized coal output, and the pulverized coal output of coalbed methane well was classified into four phases by the field observ ation and monitoring the pulverized coal, testing the pulverized coal and coal, and the pulverized coal output under physical simulation experiments. The results showe d that the peak period of CBM Wells stuck pump was at the early stage of drainage and the rapidly rising stage of gas production, and the pulverized coal output was inf luenced by many kinds of factors, and the development of tectonic coal was the key factor of the pulverized coal output.