Abstract：Hydraulic fracturing is an important method for reforming tight reservoirs such as shale gas,but fracturing fractures morphology of deep shale-gas wells with buried depth greater than 3500 meters is quite different from that of shallow shale-gas wells,and the fracturing proppant filling process is also different from shallow shale-gas wells.This paper presents an example of proppant filling process optimization in a deep shale-gas well fracturing,and evaluates the optimization with distribution characteristics of microseismic events in fracturing.The monitoring results show that the distribution of microseismic events in the fractured section with 100 mesh ceramsite is uniform and the amount of proppant filling reaches the design standard,and the density of microseismic events and the stimulated reservoir volume are larger.With the second 100 mesh quartz proppant filling,the length,width and height of fracture in fracturing are larger,the number of distal events is larger,and the stimulated reservoir volume is also larger.Microseismic events in Wufeng Formation fracturing distribute in narrow and long shape.Our practice shows that microseismic event evaluation can achieve proppant filling process optimization in deep shale-gas wells in the deep shale gas development.
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