Abstract: In view of the current characteristics of unconventional oil and gas resources,such as high difficulty in development,low recovery rate and poor effect of conventional hydraulic fracturing,through a lot of experiments and production practices,silicone oil modifiers and alkane modifiers are screened as surface modifiers of proppants,and the surface of proppants is modified by advanced technologies such as surface coating and surface curing of proppants to achieve the hydrophobic effect. Hydrophobic proppant has many advantages in fracturing process,such as water control and oil stabilization,long effective action time,high flowback rate and strong oil conductivity. It has been widely used in foreign countries,but the domestic research on the hydrophobic proppant technology is relatively late,and the practical application is few. The modified proppant prepared by the screened compound modifier was evaluated by the laboratory evaluation method. The results show that the modified proppant can meet the requirements of density,crushing resistance,turbidity and acid solubility in the proppant performance evaluation standards,and the modified proppant has good heat resistance,permeability,silt adsorption and conductivity.

Key words: hydrophobic proppant, surface modifier, water control and oil stabilization, conductivity