Fracturing proppant relative density is lower

Fracturing proppant into the formation along with high-pressure solution filled in the cracks in the rock, play a supporting fissure is closed not because of stress release effect, thereby maintaining high conductivity, so that oil and gas flow, increase production.
Petroleum proppant performance requirements:
 1,proppant have sufficient compressive strength and wear resistance, can withstand strong pressure and friction during injection and effectively support the artificial cracks.
 2, proppant particles relative density is lower, easy pumped underground.
 3, proppant particles under conditions of a temperature of 200 degrees, with the fracturing fluid and the reservoir fluid is not a chemical effect, the acid solubility of the maximum permissible value should be less than 7%.