沁水盆地南部煤层气井产能影响地质分析

The geology influence factors analysis of CBM production in the southern Qinshui Basin

随着国内煤层气产业化的稳步推进,提高单井产量将是开发工作的重点,因此揭示影响煤层气单井产量的控制因素是实现高效增产的前提,是煤层气开发的关键。为此,以沁水盆地南部采气区的地质和生产资料为基础,采用理论分析与现场生产实践相结合的方法,从地质角度系统总结了区内煤层气井的产能主控因素,探究了它们对煤层气井产能的协同控制作用。研究认为构造、水文条件和煤储层特征共同决定了煤储层的开发潜力,是本区煤层气井产能的关键地质影响因素。

As the domestic industrialization of coalbed methane(CBM) has developed steadily,the emphasis of mining work should be transferred to the study of improving the single well production. The prerequisite for implementation of efficient production is to reveal the control factors which influence the CBM production of single well. Based on the geological and means of production in the south Qinshui basin,this paper combines theoretical analysis with field production practice to systemically summarize the main control factors of CBM production in the field of geology. The study concludes that geological structure,hydrologic condition and coal reservoir characteristics jointly determine the development potential,which are the geological influence factors of CBM production.