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US 12,480,034 B2Granted
Extended release colloidal scale inhibitor
AssigneeChampionX LLC
InventorsRoss Tomson, Paula Guraieb, Rangana Jayawickramage, Kyle Swanson
Life of this patent
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Abstract
Nano-sized metal silica oxide carriers capable of delivering a well treatment additive for a sustained or extended period of time in the environment of use, methods of making the nanoparticles, and uses thereof are described herein. The nanoparticles include an additive loaded in a silica oxide/metal nanoparticle. The metal can be a Column 2 metal, a Column 14 metal, or transition metal.
Claims17
An aqueous solution comprising a plurality of nanoparticles dispersed throughout the aqueous solution, the nanoparticles comprising:
- a hydrocarbon formation and/or well treatment additive chemically bound to the nanoparticles and releasable from the nanoparticles, silica, and at least one metal selected from a Column 2 metal, a Column 14 metal, a transition metal, or any combination thereof,
- wherein the nanoparticles have an average particle size of less than 300 nm,
- wherein the aqueous solution does not include a surfactant, and
- wherein the nanoparticles do not precipitate out of the aqueous solution when subjected to a temperature of −20° C. to 200° C. and a pH of 5 to 9.
1 more element
Dependencies are inferred from the claim text.