解堵性二次压裂在樊庄煤层气井的应用

Applications of Plugging Secondary Fracturing of CBM Wells in Fanzhuang

樊庄区块煤层气并使用清洁液压裂后,由于破胶不彻底导致裂缝堵塞而使煤层气井产量低。通过对压裂液进行室内实验优选出适合樊庄区块煤层气井的压裂液体系,优化施工工艺,开展活性水二次压裂,达到解堵增产的目的。樊庄区块现场实施2l井次,取得了很好的增产效果。

After the CBM wells Fanzhuang Blcok were fractured using clean fluid,the broken plastic was not completely and the fractures were blocked,so the production of the CBM wells is quite low.By indoor experiment and preference,the paper selects a fracturing fluid system which is fit for the CBM wells in Fanzhuang Blcok,optimizes the construction process and carries out the secondary fracturing with active water,so that to achieve the purpose of plugging and production increase.It has been implemented in 21 wells of Fanzhuang Blcok,and achieved remarkable effect of production increase.