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US 12,404,439 B2Granted
Extended release asphaltene inhibitor composition
AssigneeChampionX LLC
InventorsRoss Tomson, Paula Guraieb, Kristin Powell, Rangana Jayawickramage
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Abstract
A nanoparticle for well-treatment applications and compositions and methods of making and using the same can include a carrier material and an asphaltene inhibitor. The asphaltene inhibitor is capable of being released from the carrier material. The nanoparticle can have a size of 10 nanometers (nm) to 500 nm.
Claims19
A nanoparticle comprising a carrier material and an asphaltene inhibitor, wherein the asphaltene inhibitor is releasable from the carrier material,
- wherein the nanoparticle has a core-shell structure comprising the asphaltene inhibitor and a porous shell comprising the carrier material,
- wherein the nanoparticle has a diameter of 250 nm to 350 nm, the thickness of the shell is 50 nm to 150 nm, and at least 90 wt. % of the core, based on the total weight of the core, comprises the asphaltene inhibitor, and
- wherein the shell comprises the asphaltene inhibitor on at least a portion of the shell surface and in the pores of the shell.
Dependencies are inferred from the claim text.