Optimization Of Coalbed Methane Well Drainage And Production In Anze Block Qinshui Basin

Huabei oilfield has been developing coalbed methane on a large scale in the south of qinshui basin of Shanxi Province for more than 10 years.However,as the exploration and development scope continues to expand,the gas production law of coalbed methane Wells in the new area also has obvious differences with the change of geological conditions: that is,the development effect of different geological conditions in different regions is greatly different.Based on the analysis of geological characteristics and conditions of coal and rock in different weight regions,the process from adsorption mechanism to desorption seepage is dissected,and the understanding of drainage and mining theory is deepened.By studying the Adventist development block geological characteristics,find out the dynamic of the coal seam in the process of desorption gas permeability change rule,through the production practice verification,determines the influence regularity of gas and high rank main control factors,established to match the "three three" high rank CBM control method,it takes time to shorten the 3-6 months,to confirm the validity of this method,for the high rank CBM has guiding significance.There are 57 pictures,16 tables and 82 references in this paper.