Consolidating agent emulsions and associated methods
Methods are provided that include a method comprising providing a consolidating agent emulsion composition comprising an aqueous fluid, an emulsifying agent, and a consolidating agent; and introducing the consolidating agent emulsion composition into at least a portion of a subterranean formation. In some embodiments, the consolidating agent emulsion composition may be introduced into at least a portion of a propped fracture that comprises proppant particulates and allowed to at least partially consolidate at least a portion of the propped fracture. In some embodiments, the consolidating agent emulsion composition comprises a resin composition. Additional methods are also provided.
1. A method comprising:
providing a consolidating agent emulsion composition that comprises an aqueous fluid, an emulsifying agent, and a consolidating agent, wherein the consolidating agent emulsion composition comprises an aqueous external phase and an oil internal phase, and wherein the consolidating agent comprises a non-aqueous tackifying agent; and
introducing the consolidating agent emulsion composition into at least a portion of a subterranean formation.
2. The method of claim 1 wherein the consolidating agent is present in the consolidating agent emulsion composition in an amount in the range of about 0.1% to about 40% by weight of the consolidating agent emulsion composition.
3. The method of claim 1 wherein the consolidating agent further comprises at least one resin composition selected from the group consisting of a two-component epoxy based resin, a furan based resin, a phenolic based resin, a urethane resin, and a phenol/phenol formaldehyde/furfuryl alcohol resin.
4. The method of claim 1 wherein the non-aqueous tackifying agent is selected from the group consisting of a polyamide, a polyester, a polycarbonate, a silyl-modified polyamide, a polycarbamate, and a urethane.
5. The method of claim 1 wherein the consolidating agent further comprises particles having a size of about 0.01 micrometers to about 300 micrometers.
6. The method of claim 1 wherein the aqueous fluid comprises a liquid hardening agent.
7. The method of claim 1 further comprising introducing a postflush solution comprising a liquid hardening agent into at least a portion of the subterranean formation.
8. The method of claim 1 further comprising introducing a preflush solution comprising a liquid hardening agent into at least a portion of the subterranean formation.
9. The method of claim 1 further comprising introducing a preflush solution comprising at least one member selected from the group consisting of a surfactant and a mutual solvent into at least a portion of the subterranean formation.
10. The method of claim 1 wherein the emulsifying agent is a surfactant.
11. The method of claim 1 wherein the emulsifying agent is present in the consolidating agent emulsion composition in an amount in the range of about 0.001% to about 10% by weight of the consolidating agent emulsion composition.
12. The method of claim 1 wherein the consolidating agent further comprises at least a plurality of filler particles.
13. The method of claim 12 wherein the filler particles comprise at least a plurality of filler particles selected from the group consisting of particles with a size of about 0.01 micrometers to about 100 micrometers, silica, glass, clay, alumina, fumed silica, carbon black, graphite, mica, meta-silicate, calcium silicate, calcine, kaoline, talc, zirconia, titanium dioxide, fly ash, and boron.
14. The method of claim 1 further comprising introducing at least a plurality of proppant particulates into at least a portion of the subterranean formation wherein the proppant particulates have a weight mean particle size of about 20 times to about 50 times the weight mean particle size of the formation particulates.
15. The method of claim 1 further comprising metering the consolidating agent emulsion composition into a fracturing fluid containing particulates while being mixed; and placing the fracturing fluid into a subterranean formation at a pressure sufficient to create or enhance at least one or more fractures therein.
16. A method comprising:
providing a consolidating agent emulsion composition that comprises an aqueous fluid, an emulsifying agent, and a consolidating agent, wherein the consolidating agent emulsion composition comprises an aqueous external phase and an oil internal phase, and wherein the consolidating agent comprises at least one non-aqueous tackifying agent selected from the group consisting of a polyamide, a polyester, a polycarbonate, a silyl-modified polyamide, a polycarbamate, and a urethane;
introducing the consolidating agent emulsion composition into at least a portion of a subterranean formation that comprises particulates; and
allowing the consolidating agent to at least partially consolidate at least a portion of the particulates while maintaining permeability within the subterranean formation needed to extract hydrocarbons from the subterranean formation.
17. The method of claim 16 wherein the consolidating agent is present in the consolidating agent emulsion composition in an amount in the range of about 0.1% to about 40% by weight of the consolidating agent emulsion composition.
18. The method of claim 16 wherein the consolidating agent further comprises at least one resin composition selected from the group consisting of a furan based resin, a phenolic based resin, a urethane resin, and a phenol/phenol formaldehyde/furfuryl alcohol resin.
19. The method of claim 16 wherein the consolidating agent further comprises particles having a size of about 0.01 micrometers to about 300 micrometers.
20. The method of claim 16 wherein the aqueous fluid comprises a liquid hardening agent.
21. The method of claim 16 further comprising introducing a postflush solution comprising a liquid hardening agent into at least a portion of the subterranean formation.
22. The method of claim 16 wherein the emulsifying agent is a surfactant.
23. The method of claim 16 wherein the emulsifying agent is present in the consolidating agent emulsion composition in an amount in the range of about 0.001% to about 10% by weight of the consolidating agent emulsion composition.