Application of integrated viscous slippery water in Jiangsu oilfield
By optimizing the concentration of drag reducer,swelling inhibitor and drainage aid,the formulation of high viscosity slippery water in non-crosslinked system was formed,0.10%~0.30%drag reducer+0.20%swelling inhibitor+0.10%drainage aid and the formula-tion of low viscosity slippery water,0.08%~0.10%drag reducer+0.10%swelling inhibitor.In addition,the performance of sand carrying,drag reduction,rubber breaking and core damage of low,medium and high viscosity slippery water was systematically evaluated.Field tests were carried out on three tight oil wells in X platform and five shale oil wells in HZ block,and the application results were good.