Study of drilling and cementing technologies for Xinji coalbed methane pilot pattern

Based on drilling and cementing technology used for 1 test well and 3 producing wells in Xinji coalbed methane pilot pattern,it is put forward that a set of advanced technolgy about drilling,reservoir damage prevention,wireline coring and low density cementing for CBM well.In addition,a set of academic base and practical method for China's CBM exploration and development in future.