关键词: 压裂支撑剂;MnO2;Fe2O3;MgO;CaF2

Abstract: Single factor method was employed to research the effect of several different additives such as manganese oxide, ferric oxide, magnesium oxide and calcium fluoride on the properties of non-metallic minerals proppant.The bulk density, apparent density and broken rate of the sample were determined according to the occupation standard of the proppant;The microstructure and morphology of the proppant were characterized by the X-ray diffraction (XRD) and scanning electron microscopy (SEM).The results show that manganese oxide and ferric oxide can significantly reduce the sintering temperature of the sample;Magnesium oxide and calcium fluoride can promote the formation of the microcrystalline structure, then enhance the strength of the proppant and reduce the breakage rate.The optimized proppant is obtained when the usage of magnesium oxide and calcium fluoride is 3% and 1%, respectively.

Key words: fracturing proppant;manganese oxide;ferric oxide;magnesium oxide;calcium fluoride