Abstract:In order to meet the demand of large-scale fracturing, large flow of fracturing fluid preparation equipment is developed. liquid mixing velocity reaches 8m3/min, Field liquid mixing ‘ready-to-use’ is implemented, Reduced the liquid allowance, saved the liquid mixing costs, and improved the efficiency of fracturing construction.The device has been used in oilfield, after many years of verification in large-scale fracturing operation, equipment operation was stabled, development effect was achieved. This paper mainly introduces the liquid mixing process, composition and field application of this device.