The invention discloses an expanding material composition, a self-suspension propping agent, a method for preparing the same and application of the self-suspension propping agent. The expanding material composition, the self-suspension propping agent, the method and the application have the advantages that the expanding material composition can be coated on a propping agent body and can be quickly swollen in water, stable hydration
layers can be formed on the outer surfaces of propping agent granules, the
relative density of the propping agent granules can be reduced, a small quantity of
organic molecules in the expanding material composition can be expanded in the water, the
viscosity of the water can be improved, and accordingly the propping agent granules can be suspended in the water advantageously; the water can be used as
fracturing fluid, accordingly,
fracturing fluid does not need to be prepared, the expanding material composition and the self-suspension propping agent are convenient to operate, equipment is simple, and organic solvents can be omitted; the
viscosity of the
fracturing fluid can be lowered, and accordingly the fracturing fluid delivery difficulty can be lowered; additional
macromolecular compounds for the fracturing fluid can be omitted, accordingly, the problem of blockage of
oil and gas production pores due to
macromolecular compounds which flow into underground environments along with existing fracturing fluid can be solved, and stratum environment
pollution due to the
macromolecular compounds can be reduced.