Patent ID: 9701885
Date: 2017-07-11
CPC Classifications: C09K,E21B

Claim:
1. A method of treating a borehole comprising providing a well fluid including a base fluid containing an emulsifier; adding nanoparticles as a lubricity additive to the base fluid, wherein the nanoparticles are formed ex situ by the method of providing aqueous-based precursor solutions for forming the nanoparticles, mixing the precursor solutions under high shear and adding the mixed precursor solutions to the base fluid, to form the nanoparticle-containing fluid, wherein the nanoparticles have a particle size between about 1 and 120 nm, and wherein the nanoparticles are present in an amount of about 5 wt % or less; and injecting the fluid into the well, for treating the well.