Drag reduction of water system is a kind of advanced slippery water system , with good property of good water solubility, easily to prepare, salt antibacterial, non crosslinked sand carrying, the maneuverability, can realize a quick solution, flowback fluid Recyclable reuse, meet the tight gas reservoir reconstruction needs.At the same time, it can reduce construction friction, the overall viscosity of construction liquid is low, less damage to the formation.