▎ 摘　　要

NOVELTY - Coated proppant (100) comprises a proppant particle (10), a surface copolymer layer (20) surrounding the proppant particle, where the surface copolymer layer comprises a copolymer of at least two monomers chosen from styrene, methyl methacrylate, ethylene, propylene, butylene, imides, urethanes, sulfones, carbonates, and acrylamides and the copolymer is crosslinked by divinyl benzene, and a resin layer surrounding the surface copolymer layer, where the resin layer (30) comprises a cured resin. USE - The coated proppant is used for protecting proppant particle from degradation by the presence of aqueous fluids at downhole temperatures, stimulating groundwater wells, preconditing or induce rock cave-ins for mining operations, disposing of waste by injecting it deeply into rock, measuring stresses in the earth's crust, generating electricity in enhanced geothermal systems, or increasing injection rates for the geologic sequestration of carbon dioxide and as proppants in fracking operations. ADVANTAGE - The coated proppant provides strong, chemically-resistant proppant coating, increases surface area of the particle, imparts strength to proppant, increasing elastic modulus, hardness, and even degradation temperature, and prevents crushing, fines migration, proppant flowback and breakdown of the proppant particle. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) (1) a method of preparing the coated proppant, involving preparing a first mixture comprising a polymerizable material, an initiator, and a crosslinker comprising divinyl benzene, contacting the first mixture to a proppant particle to form a polymerization mixture, heating the polymerization mixture to cure the polymerizable material and form a polymer-coated proppant particle comprising the proppant particle and a surface copolymer layer crosslinked via divinyl benzene, where the surface copolymer layer surrounds the proppant particle, preparing a second mixture comprising the polymer-coated substrate and an uncured resin, and adding a curing agent to the second mixture to cure the uncured resin and form the coated proppant, where the coated proppant comprises the proppant particle, and a resin layer surrounds the surface copolymer layer, where the resin layer comprises a cured resin; and (2) (2) a method for increasing a rate of hydrocarbon production from a subsurface formation, involving producing a first rate of production of hydrocarbons from the subsurface formation, introducing a hydraulic fracturing fluid comprising the coated proppants into the subsurface formation, and increasing hydrocarbon production from the subsurface formation by producing a second rate of production of hydrocarbons from the subsurface formation, in which the second rate of production of hydrocarbons is greater than the first rate of production of hydrocarbons. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the coated proppant, in which a proppant particle is surrounded by a surface copolymer layer and in which the surface copolymer layer is surrounded by a resin layer. 10Proppant particle 20Surface copolymer layer 30Resin layer 100Coated proppants