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以研究煤储层物性非均质性,识别煤层气藏类型为切入点,分析产能与煤层气藏类型之间的关系,发现高产井(>3000 m3/d)主要分布在富集高渗煤层气藏内,中产井(1500~3000 m3/d)主要分布在高饱和度低渗透煤层气藏内,而高渗透率低饱和度煤层气藏和低渗透率中低饱和度煤层气藏这2类气藏,受渗透率和含气量制约,其煤层气井产能一般偏低。
Based on the study of the physical heterogeneity of coal reservoirs and the identification of coalbed methane reservoir types, the relationship between production capacity and coalbed methane reservoir types was analyzed. It was found that high-yielding wells (> 3000 m3 / d) were mainly distributed in high-permeability coal seams Middle and middle production wells (1500-3000 m3 / d) are mainly distributed in high saturation and low permeability coalbed methane reservoirs, while high permeability and low saturation coalbed methane reservoirs and low permeability middle and low saturation coalbed methane reservoirs Gas reservoirs, controlled by permeability and gas content, generally have low productivity in CBM wells.