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US 8,133,587 B2Granted
Proppant materials comprising a coating of thermoplastic material, and methods of making and using
AssigneeGeorgia-Pacific Chemicals LLC
InventorsRichard Rediger, Michael J. Aron, Bedford W. Fennell, Roger Scott Johnson
Life of this patent
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Abstract
The present invention provides thermoplastic coated proppants and methods for preparing the thermoplastic coated proppants. Methods for using these proppants in subterranean well formations and hydraulic fracturing operations, for example, are also disclosed.
Claims36
A coated proppant comprising:
- a particle;
- and
- a coating consisting essentially of a thermoplastic material on the particle;
- wherein the thermoplastic material comprises at least one of an ethylene vinyl acetate, a pine rosin, a modified rosin, a rosin ester, a coumarone-indene resin, an oligomer of C5 hydrocarbons, an oligomer of C9 hydrocarbons, an oligomeric reaction product of a terpene and a phenolic, or any combination thereof, and wherein the oligomer of C5 hydrocarbons and the oligomer of C9 hydrocarbons each have a number-average molecular weight of less than about 10,000.
1 more element
A method of making a coated proppant, the method comprising applying a coating consisting essentially of a thermoplastic material onto a particle to obtain the coated proppant;
- wherein the thermoplastic material comprises at least one of an ethylene vinyl acetate, a pine rosin, a modified rosin, a rosin ester, a coumarone-indene resin, an oligomer of C5 hydrocarbons, an oligomer of C9 hydrocarbons, an oligomeric reaction product of a terpene and a phenolic, or any combination thereof, and wherein the oligomer of C5 hydrocarbons and the oligomer of C9 hydrocarbons each have a number-average molecular weight of less than about 10,000.
A method of treating a subterranean formation comprising:
- introducing a fluid suspension of coated proppants to the subterranean formation, wherein the coated proppants comprise:
- a particle;
- and
- a coating consisting essentially of a thermoplastic material on the particle, wherein the thermoplastic material comprises at least one of an ethylene vinyl acetate, a pine rosin, a modified rosin, a rosin ester, a coumarone-indene resin, an oligomer of C5 hydrocarbons, an oligomer of C9 hydrocarbons, an oligomeric reaction product of a terpene and a phenolic, or any combination thereof, wherein the oligomer of C5 hydrocarbons and the oligomer of C9 hydrocarbons each have a number-average molecular weight of less than about 10,000;
- depositing the coated proppants in the subterranean formation;
- subjecting the coated proppants to a temperature above the thermal transition point temperature of the thermoplastic coating on the particle;
- and
- agglomerating the thermoplastic coating of the coated proppants to form a stable framework of proppant particles.
5 more elements
A coated proppant comprising:
- a particle;
- and
- a coating consisting essentially of a thermoplastic material on the particle, wherein the thermoplastic material comprises a pine rosin, a modified rosin, a rosin ester, or any combination thereof.
Dependencies are inferred from the claim text.