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US 2016/0257876 A1Published application
Proppant sand coating for dust reduction
AssigneeCovestro LLC
InventorsDavid P. Zielinski, Emery Yuhas, Yanan Chen, Derick Henderson, Mark Connor
Life of this patent
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Abstract
The present invention provides for coating proppants, such as sand, with a resin-containing dispersion which dramatically reduces the dust generated during handling, for example in hydraulic fracturing, by protecting the surface of the particle from abrasion and degradation. Such resin-containing dispersion coated-sand may also reduce the wear on metal parts used in transporting such proppants.
Claims24
A coated proppant comprising:
- a core;
- and
- a resin-containing dispersion coating disposed over at least a portion of the core, wherein the coated proppant has at least about a 90% reduction in dust as compared to a comparable core in an uncoated state.
A process for coating a proppant comprising:
- disposing a resin-containing dispersion over at least a portion of a proppant core, wherein the coated proppant has at least about a 90% reduction in dust as compared to a comparable core in an uncoated state.
A process for reducing dust from a proppant comprising;
- disposing a resin-containing dispersion over at least a portion of a proppant core, wherein the coated proppant core has at least about a 90% reduction in dust as compared to a comparable core in an uncoated state.
Dependencies are inferred from the claim text.