Frac fluids for far field diversion

Abstract

Aqueous well treatment fluids especially suited for use in far field diversion in low viscosity carrier fluids comprise water, a friction reducer, and a diverter. The diverter comprises dissolvable particulates and proppants. The dissolvable particulates have a specific gravity of from about 0.9 to about 1.6 and a particle size of about 50 mesh or less. The proppants have a specific gravity of from about 0.9 to about 1.4 and a particle size of from about 20 to about 100 mesh. The dissolvable particulates have a higher specific gravity and a smaller particle size than the proppant.

What is claimed is: 
     
         1 . A hydraulic fracturing fluid to enhance production when pumped into a subterranean formation in a well, the hydraulic fracturing fluid comprising:
 (a) water;   (b) a friction reducer selected from the group consisting of polyacrylamides and derivatives, copolymers, and mixtures thereof, the water and the friction reducer collectively defining an aqueous carrier fluid, and   (c) a diverter comprising:
 (1) proppants having a specific gravity within a range of about 0.9 to about 1.4, the proppants consisting essentially of proppants having a particle size within a range of about 20 mesh to about 100 mesh; and 
 (2) dissolvable particulates (i) having a specific gravity within a range of about 0.9 to about 1.6 and (ii) consisting essentially of dissolvable particulates having a particle size within a range of about 100 mesh or less, the dissolvable particulates also having a specific gravity greater than or equal to the specific gravity of the proppants and a smaller particle size than the proppants.