Uniform particle size, low density.

Uniform particle size, low density.

In general, hydraulic fracturing with proppant size is not single, but a certain range, if the separation degree of the support agent difference, the process of reproduction, blocking flow channel, the influence of sand filling fracture flow conductivity of proppant, so the particle size and the degree of sorting is a certain request.

In the domestic field of commonly used 20/40 mesh support agent as an example, there are at least 90% sand through the sieve after is located in the 20~40 between the eyes, at the same time demand is greater than the first number sieve sand weight is less than 0.1%, but less than the last screen amount cannot be greater than 1%.

The ideal support agent density is small, preferably less than 2000kg/m3, in order to facilitate thecarrying fluid to carry into the fracture.