Abstract:The Eyangye 2HF well,in the Sinian Doushantuo Formation,is the first horizontal shale gas well in China. The shale thickness of this well is large, with good brittleness, good gasbearing and developed natural fracture, which has a good foundation for fracturing reconstruction. But targeting the difficulties of complex fracturing such as high dolomite, ordinary pressure, great difference in horizontal stress and with interlayer, many fracturing technologies such as multiple segmentation, multicluster perforation, turnaround fracturing were innovatively adopted in the fracturing process. The fracturing complexity was improved by means of variable displacement, temporary plugging steering and secondary sand addition after shutdown of pumps. The combination of surfaceborehole microseisms monitoringtechnology was first used in the fracturing, which can monitor the realtime fracture extension, evaluate the effect of fracturing transformation. After fracturing, the highyield gas flow with a stable output of 553,300 cubic meters per day was finally obtained by means of the electric submersible pump, which further confirmed the prospects for exploration and development of the shale gas formation.