Composition and method for hydraulic fracturing and evaluation and diagnostics of hydraulic fractures using infused porous ceramic proppant
First Claim
1. A ceramic proppant composition for use in hydraulic fracturing, the composition comprising:
- non-porous particulates having a permeability of at least about 300 D at 4,000 psi closure stress; and
porous ceramic particulates having an internal interconnected porosity of from about 5% to about 35% and comprising a chemical treatment agent disposed within the porous ceramic particulates and a polymer coating that is a reaction product of a cross-linker and a phenol formaldehyde polymer, the phenol formaldehyde polymer having a viscosity of from about 1100 cps to about 1850 cps at 150°
C., wherein the polymer coating is configured to permit the chemical treatment agent to elute therethrough, wherein the ceramic proppant composition is formed by infusing the chemical treatment agent within the porous ceramic particulates at a first temperature of from 430°
F. to 440°
F. and coating the infused porous ceramic particulates with the polymer coating at a second temperature of from 410°
F. to 420°
.
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Accused Products
Abstract
A composition and method for hydraulically fracturing an oil or gas well to improve the production rates and ultimate recovery using a porous ceramic proppant infused with a chemical treatment agent is provided. The chemical treatment agent may be a tracer material that provides diagnostic information about the production performance of a hydraulic fracture stimulation by the use of distinguishable both water soluble and hydrocarbon soluble tracers. The tracer can be a biological marker, such as DNA. The porous ceramic proppant can be coated with a polymer which provides for controlled release of the chemical treatment agent into a fracture or well bore area over a period of time.
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Citations
45 Claims
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1. A ceramic proppant composition for use in hydraulic fracturing, the composition comprising:
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non-porous particulates having a permeability of at least about 300 D at 4,000 psi closure stress; and porous ceramic particulates having an internal interconnected porosity of from about 5% to about 35% and comprising a chemical treatment agent disposed within the porous ceramic particulates and a polymer coating that is a reaction product of a cross-linker and a phenol formaldehyde polymer, the phenol formaldehyde polymer having a viscosity of from about 1100 cps to about 1850 cps at 150°
C., wherein the polymer coating is configured to permit the chemical treatment agent to elute therethrough, wherein the ceramic proppant composition is formed by infusing the chemical treatment agent within the porous ceramic particulates at a first temperature of from 430°
F. to 440°
F. and coating the infused porous ceramic particulates with the polymer coating at a second temperature of from 410°
F. to 420°
. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 26, 27, 28, 29, 30, 45)
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13. A ceramic proppant composition for use in hydraulic fracturing, the composition comprising:
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porous ceramic particulates; a chemical treatment agent disposed within the porous ceramic particulates; and a polymer coating that is a reaction product of a cross-linker and a phenol formaldehyde polymer, the phenol formaldehyde polymer having a viscosity of from about 1100 cps to about 1850 cps at 150°
C., wherein the polymer coating is configured to permit the chemical treatment agent to elute therethrough, wherein the ceramic proppant composition is formed by infusing the chemical treatment agent within the porous ceramic particulates at a first temperature of from 430°
F. to 440°
F. and coating the infused porous ceramic particulates with the polymer coating at a second temperature of from 410°
F. to 420°
F. - View Dependent Claims (14, 15, 16, 17, 18, 31, 32, 33, 34, 35, 40, 41, 44)
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19. A ceramic proppant composition for use in hydraulic fracturing, the composition comprising:
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porous ceramic particulates; a chemical treatment agent disposed within the porous ceramic particulates, the chemical treatment agent comprising one or more scale inhibitors; and a polymer coating that is a reaction product of a cross-linker and a phenol formaldehyde polymer, the phenol formaldehyde polymer having a viscosity of from about 1100 cps to about 1850 cps at 150°
C., wherein the polymer coating is configured to permit the chemical treatment agent to elute therethrough, wherein the ceramic proppant composition is formed by infusing the chemical treatment agent within the porous ceramic particulates at a first temperature of from 430°
F. to 440°
F. and coating the infused porous ceramic particulates with the polymer coating at a second temperature of from 410°
F. to 420°
F. - View Dependent Claims (20, 21, 22, 36, 37, 38, 39, 42, 43)
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23. A ceramic proppant composition for use in hydraulic fracturing, the composition comprising:
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porous ceramic particulates; a water-soluble chemical treatment agent in the porous ceramic particulates; and a polymer coating that is a reaction product of a cross-linker and a phenol formaldehyde polymer, the phenol formaldehyde polymer having a viscosity of from about 1100 cps to about 1850 cps at 150°
C., and the polymer coating further comprising a hydrocarbon-soluble chemical treatment agent, wherein the polymer coating is configured to permit the water-soluble chemical treatment agent to elute therethrough, wherein the ceramic proppant composition is formed by infusing the water-soluble chemical treatment agent within the porous ceramic particulates at a first temperature of from 430°
F. to 440°
F. and coating the infused porous ceramic particulates with the polymer coating at a second temperature of from 410°
F. to 420°
. - View Dependent Claims (24, 25)
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Specification