Patent ID: 9518213
Filing Date: 2016-12-13
CPC Classification: C09K

Claim Text:
1. A nano-dispersion well servicing fluid in a wellbore, the fluid being formulated with components comprising: nanoparticles comprising at least one material chosen from aluminum oxides, aluminum hydroxides, aluminum hydroxyoxides, zirconium oxides, zirconium hydroxides, zirconium hydroxyoxides, the concentration of nanoparticles being greater than 0.5% by weight based on the total weight of the nano-dispersion well servicing fluid; an aqueous base continuous phase, the nanoparticles forming a dispersion in the aqueous base continuous phase, the nanoparticles having a crystallized size of 100 nm or less in diameter prior to being dispersed, and the nanoparticles carrying a charge resulting in a Zeta potential in the nano-dispersion well servicing fluid; and a pH adjuster configured to decrease the Zeta potential of the nano-dispersion well servicing fluid in the wellbore closer to zero and thereby to increase viscosity, the nano-dispersion well servicing fluid exhibiting a viscosity greater than would be exhibited without the pH adjuster.