Relations between Production of CBM and Water Discharge in Initial Production

Improving the productivity of CBM wells is one of the most emergency issues in the development of CBM. Preliminary characteristics of water discharge can indicate the productivity to some extent. Based on the data of 49 CBM wells in Fanzhuang Block, Qinshui basin, this paper makes research on the relations between the Preliminary characteristics of water discharge and CBM well production by theory of reservoir engineering. According to the index and quantity of water discharge, the CBM wells were divided into five types. Contrast this block, develop the I-type wells preferentially, reduce the fracture strength for the II-type wells, improve the fracturing technology for the IV-type wells, and shouldnt take the III & V-type wells into consideration generally.