Patent ID: 9540562
Date: 2017-01-10
CPC Classifications: C09K,E21B

Claim:
1. A method comprising; producing coated carrier particles from a well; and determining which zone in a well having more than one treatment-based zone the coated carrier particles were produced from, the coated carrier particles consisting of carrier particles, nano sized particles coated on the carrier particles and taggants coated on the nano-sized particles, where the carrier particles are selected from the group consisting of sand, gravel, ceramic beads, glass beads, and combinations thereof, where the nano-sized particles have: a mean particle size of 1000 nm or less, and are selected from the group consisting of alkaline earth metal oxides, alkaline earth metal hydroxides, transition metal oxides, transition metal hydroxides, post-transition metal oxides, post-transition metal hydroxides, piezoelectric crystals, pyroelectric crystals, and mixtures thereof; wherein the taggant comprises a first compound component selected from the group consisting of a post transition metal, a lanthanoid, and combinations thereof; wherein the taggant comprises a second compound component selected from the group consisting of fluorides, chlorides, bromides, nitrates, nitrides, iodates, oxides, hydroxides, carbonates, sulfates, sulfides, phosphates, silicates, alkoxides, organic acids such as manganese gluconate, and combinations thereof, the taggants are disposed onto each nano-sized particle by a technique selected from the group consisting of molten salt, plasma coating, chemical vapor deposition (CVD), physical vapor deposition (PVD), electroless plating; and combinations thereof; and wherein the taggant is chemically distinct from the nano-sized particles and is an indicator of the zone from which the coated carrier particles were produced.