Patent ID: 9505974
Filing Date: 2016-11-29
CPC Classification: B82Y,C04B,C09K,E21B,Y10T

Claim Text:
1. A method for fracture stimulation, in an acidic environment of a subterranean formation comprising: (a) injecting into the wellbore a slurry containing a nanocomposite spherical bead proppant at sufficiently high rates and pressures such that said formation fails and fractures to accept said slurry, said nanocomposite spherical bead proppant comprising: (b) emplacing said nanocomposite spherical bead proppant within a fracture network in said formation in a packed mass or a partial monolayer of said nanocomposite spherical head proppant, which packed mass or partial monolayer props open the fracture network; thereby allowing produced gases, fluids or mixtures thereof, to flow towards the wellbore, wherein said nanocomposite spherical bead exhibits enhanced retention of resistance in the acidic environment compared to prior art proppants comprising: thermoset polymer particles, heat treated thermoset polymer particles; thermoset polymer composite particles containing 60% to 90% by volume fillers having a size of 0.5 microns to 60 microns; and ceramic nanocomposite particles comprising 50% to 90% by weight of clay, bauxite, alumina, silica, or mixtures thereof and 0.1% to 30% by weight of nanofiller material.