What is the role proppant?

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.

Propped fracture in the formation effectively under stress to obtain and maintain long-term high oil flow capacity is the key to stable. Experimental results show that propped fracture under stress in the ground conductivity decreasing rapidly within 50h, 50h after basically stable, but as time goes on, its conductivity decreases.

Proppant particle size uniformity, roundness and sphericity and proppant crushing rate on the support has an impact fracture conductivity. The higher uniformity of the ceramic, the higher the conductivity, so the use of proppants should meet the requirements that the particle size range in accordance with the percentage by mass of 90%, and as far as possible in a smaller particle size concentration within the range of 0.40 ~ 0.80mm specifications such as ceramic particle size concentration is 0.50 ~ 0.80mm in higher conductivity. Because a higher rate of Proppant  crushing long-term conductivity decreased greatly, so the priority field  fracturing proppant  crushing lower obtain higher fracture conductivity.