When oil and gas after deep mining, high closure pressure after fracturing low permeability deposit processing, the hydrocarbon formation split, passage of oil and gas from the cracks formed in the collection out bauxite proppant of the fluid injected into the rock grassroots needs at this time, to exceed the formation fracture pressure strength, so that cracks the rock around the wellbore to form a channel having a high level flow capacity, cracks formed to maintain open after fracturing oil and gas product can be smoothly passed.
         Petroleum proppant into the formation along with high-pressure solution filled in the cracks in the rock, play a supporting fracturing proppants fissure is closed not because of stress release effect, thereby maintaining high conductivity, so that oil and gas flow, increase production.