为研究寺河井田煤层气产能分布特征及其影响因素，以气井整个生命周期不同阶段的时间节点为分类标准，利用统计分析法对其历史排采数据进行归类，追踪气、水随时空变化特征，并从地质及工程两方面分析产能分布主控因素。结果表明：随着排采时间延长，煤层气井高产区范围逐渐扩大，低产区范围逐渐缩小，产能分布区域差异性大；构造、含气性、渗透率是产能的主控地质因素，含气性与产能分布一致度较高，构造通过影响含气性间接控制产能分布，渗透率差别较大时，产能与渗透率相关性显著；压裂、储层伤害、井下采掘活动是产能的工程影响因素，特别是储层伤害和井下采掘活动对产能影响较大，布井时需合理规划井上下联合开采时间关系，使气井达到产能最优化。

This paper studies the distributions and its influencing factors of coalbed methane productivity in Sihe mine field using statistical analysis on historical drainage data.Time nodes in different stages of the whole gas well life cycle are used as the classification method.The changes of gas and water with time and space are also tracked.The main controlling factors for productivity distributions are studied geographically and engineeringly.The results show that the range of high production area of coalbed methane wells gradually expands with drainage time while the range of low production area gradually decreases.The productivity distribution at different regions are varied significant.Geographic structure, gas-bearing properties, and permeability are the main geological factors that control the gas productivity.The gas-bearing and productivity distribution are highly correlated and structure influences gas-bearing, thus affects productivity distribution.When permeability difference is great, productivity and permeability are significantly correlated.Furthermore, fracturing, reservoir damage, and underground mining activities are engineering factors that affect productivity, especially reservoir damage and underground mining activities.To optimize the productivity of gas wells, planning the time order for upper and lower seam injoint production is significantly important.