Source Analysis and Countermeasure Research of Sand Production after Hydraulic Fracturing in Tight Sandstone Gas Reservoir

Abstract Sand production is the most common problem after hydraulic fracturing treatment. This particular prominent in sandstone reservoirs. For Jinqiu gas reservoir of Sichuan Basin China, average sand 103 tons, and rate 2.36% through statistics 12 wells. The will seriously damage downhole equipment as well ground facilities. In this study, based on analysis source, it clear that mainly 70/140 mesh flowback order to control proppant flowback, fibers length about 3 mm, 6 9 mm are selected for experimental study. A series laboratory evaluations designed quantify effectiveness control, so explore mechanisms behind optimizing their properties a chosen reservoir. key fiber include dispersion performance, microstructure, influence transport fracture, fracture conductivity, critical flowrate. with different lengths concentrations slickwater good, can form net-like structure reinforces pack, 40/70 resin-coated sand, increase concentration, distance flowrate increase, but conductivity decreases. field test carried out type dosage optimized by indoor experiment. systematic evaluation shows plays significant role control. findings study help better understanding source countermeasure research tight