About selecting fracturing fluid, there are three ceramic proppants liquid systems, including direct injection of liquid nitrogen, nitrogen foam injection and drag water. After considering the costs, environmental and production and other factors, the current standard practice of fracturing fluid is chosen drag water, namely at high displacement pump large volumes of water and a small amount of support and additives, in order to go deeper into the cracks and improve shale gas production. Drag due to the water content of 99.5% for the water, so the technology has been become water fracturing.
In the drilling and fracturing stage, ceramic proppant according to the World Resources Institute showed a mouthful of shale gas wells need to use 7,000 tons to 25,000 tons. In wastewater recycling phase, only about 70% of the waste water back into the ground can be processed and stored, 30% of water is absorbed underground rock. In other words, a net consumption of shale gas to 2100-7500 tons.