Proppant how to use? What is the role?

Fracturing fluids and additives mixed with the pump into the formation of cracks, and to bring to the seam  Proppant   proppant flowback after the crack opening. Corresponding costs ratio: 46% fluid infusion, 25% proppant fracturing chemicals accounted for 19%, 10% acid. The role of proppant in the fracture after cracks open, so its strength is critical proppant must be sufficient to withstand the closure pressure.
Ceramic proppant of raw materials and Scope
ceramic proppant and other additives is sintered bauxite, ceramic proppant mineral composition of alumina, silicates and iron - titanium oxide, more spherical cylindrical, high strength, suitable for deep high fracture closure pressure of the reservoir, for the deep well, to improve the flow capacity is also used to make trailing proppant.
Fracturing proppant at what time use and the use of the principle? When in use and what products or machinery and equipment used?
Proppant fracturing and acidizing commonly used in hydraulic fracturing.
(1) acid fracturing principle: liquid pressure to crack rock by fracturing fluid and proppant ceramic filling cracks, etc., so that oil and gas flow.
(2)  Hydraulic fracturing  principle: using ground pressure pump, the high-viscosity liquids (fracturing fluid + Add liquid) to significantly exceed the formation adsorption capacity displacement injection wells, resulting in high pressure near the bottom of the well, the pressure to force the formation of strata fracture (fracture is generally 1-3 mm), will be with proppant fracturing fluid injected into crevices, stopping the pump, high flow capacity of the formation to form sand filling cracks, play production, by injection role.
Related equipment and products: tanks, fracturing pump, sand trucks, sand trucks, manifold cars, car dashboard, fracturing fluid (pad fluid, carrying sand fluid replacement fluid).