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US 10,865,339 B2Granted
Slow-release scale inhibiting compositions
AssigneeChampionX USA Inc.
InventorsDaniel R. Dreyer, Pious V. Kurian
Life of this patent
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Abstract
A coated particulate composition includes a vitreous polyphosphate glass particulate and a coating on at least a portion of the surface of the particulate, the coating comprising a water-insoluble polymer or a water-insoluble particulate, wherein the coating weight is about 0.01 wt % to 90 wt % of the mass of the coated particulate. The particulates provide long-term scale inhibition downhole in subterranean reservoirs where temperatures exceed 70° C.
Claims17
A composition comprising:
- a vitreous polyphosphate glass particulate;
- and
- a coating on at least a portion of the surface of the vitreous polyphosphate glass particulate, the coating comprising a water-insoluble polymer comprised of a vinylidene chloride-methyl acrylate copolymer,
- wherein the coating weight is about 5 wt % to 25 wt % of the mass of the composition, and the vitreous polyphosphate particulate has a particle size of about 10 to 30 mesh.
1 more element
Dependencies are inferred from the claim text.