초록 ▼

Treatments and compounds can be useful in subterranean formations where particulates and/or surfaces may be subject to silica scale build-up. Certain embodiments pertain to utilizing silica scale control additives with particulate packs. Of these, certain methods may treat particulate packs in a sub

Treatments and compounds can be useful in subterranean formations where particulates and/or surfaces may be subject to silica scale build-up. Certain embodiments pertain to utilizing silica scale control additives with particulate packs. Of these, certain methods may treat particulate packs in a subterranean formation with silica scale control additives, certain methods may combine silica scale control additives with particulates prior to formation of a particulate pack, and certain compounds may provide the features of both silica scale control additives and particulates.

대표청구항 ▼

1. A method comprising: providing a particulate pack in a subterranean formation; wherein the particulate pack comprises at least some particulates comprising an existing coating that impedes the intrusion of water into the particulates; wherein the existing coating is less than about 10 micrometers

1. A method comprising: providing a particulate pack in a subterranean formation; wherein the particulate pack comprises at least some particulates comprising an existing coating that impedes the intrusion of water into the particulates; wherein the existing coating is less than about 10 micrometers thick and comprises at least one hydrophobic substance selected from the group consisting of a reaction product of a silicon oxide or hybrid organo-silicon oxide anchor layer upon which a chloroalkylsilane is deposited, a silicone, a siloxane, a diffusion barrier comprising a trimethylsilyl functional group, an organosiloxane, a fluoro-organosiloxane, a fluoro-organosilane, a polysiloxane, an organo-modified polysiloxane, a di-betaine polysiloxane, a di-quaternary polysiloxane, a polymer of a fluoroalkyl-group containing silane compound, a dimer of a fluoroalkyl-group containing silane compound, a trimer of a fluoroalkyl-group containing silane compound, polytetrafluoroethylene, plant oils, hydrocarbons, a polyamide, a silyl-modified polyamide, an organosilane, and copolymerized polyvinylidene chloride;after providing the particulate pack in the subterranean formation, introducing a treatment fluid comprising a silica scale control additive into the subterranean formation; andsuppressing silica scale build-up proximate to the particulate pack with the silica scale control additive. 2. The method of claim 1, wherein the silica scale control additive comprises at least one substance selected from the group consisting of: a polyaminoamide dendrimer, a polyethyleneimine, a carboxymethylinulin, a polyacrylate, a polyallylamine, a copolymer of polyacrylamide, a polyallyldimethylammonium chloride, any combination thereof, and any derivative thereof. 3. The method of claim 1, wherein a concentration of the silica scale control additive in the treatment fluid ranges between about 1 and about 1000 parts per million by weight of the treatment fluid. 4. The method of claim 1, wherein the treatment fluid has a pH between about 4.0 and about 8.0. 5. The method of claim 1, wherein the particulate pack has a retained permeability of about 40% or more as determined using a temperature-promoted diagenesis test using formation conditions expected for the subterranean formation. 6. The method of claim 1, wherein the existing coating comprises a filler material that is less than 20 micrometers in size, the filler material filling pores, voids, crevices, cracks or channels that are present on a surface of the particulates. 7. The method of claim 6, wherein the filler material is coated with the hydrophobic substance to form a hydrophobically coated filler material, the hydrophobically coated filler material being applied to the particulates to form the existing coating thereon. 8. A method comprising: providing a treatment fluid comprising: a carrier fluid; anda plurality of particulates; wherein at least some of the particulates comprise an existing coating that impedes the intrusion of water into the particulates; wherein the existing coating is less than about 10 micrometers thick and comprises at least one hydrophobic substance selected from the group consisting of a reaction product of a silicon oxide or hybrid organo-silicon oxide anchor layer upon which a chloroalkylsilane is deposited, a silicone, a siloxane, a diffusion barrier comprising a trimethylsilyl functional group, an organosiloxane, a fluoro-organosiloxane, a fluoro-organosilane, a polysiloxane, an organo-modified polysiloxane, a di-betaine polysiloxane, a di-quaternary polysiloxane, a polymer of a fluoroalkyl-group containing silane compound, a dimer of a fluoroalkyl-group containing silane compound, a trimer of a fluoroalkyl-group containing silane compound, polytetrafluoroethylene, plant oils, hydrocarbons, a polyamide, a silyl-modified polyamide, an organosilane, and copolymerized polyvinylidene chloride;adding a silica scale control additive to the carrier fluid;introducing the treatment fluid into a subterranean formation;allowing at least some of the particulates to form a particulate pack in the subterranean formation; andsuppressing silica scale build-up proximate to the particulate pack with the silica scale control additive. 9. The method of claim 8, wherein the silica scale control additive comprises at least one substance selected from the group consisting of: a polyaminoamide dendrimer, a polyethyleneimine, a carboxymethylinulin, a polyacrylate, a polyallylamine, a copolymer of polyacrylamide, polyallyldimethylammonium chloride, any combination thereof, and any derivative thereof. 10. The method of claim 8, wherein the plurality of particulates comprise at least one substance selected from the group consisting of: a sand, a sintered bauxite, a silica alumina, a glass bead, a bauxite, a fumed silica, a ceramic material, a glass material, a polymer material, a polytetrafluoroethylene material, a composite particulate, a coated particulate, a degradable particulate, a proppant, a gravel, any combination thereof, and any derivative thereof. 11. The method of claim 8, wherein the carrier fluid comprises at least one substance selected from the group consisting of: an aqueous fluid, a hydrocarbon fluid, a gel, and a derivative thereof. 12. The method of claim 8, wherein a concentration of the silica scale control additive in the carrier fluid ranges between about 1 and about 1000 parts per million by weight of the carrier fluid. 13. The method of claim 8, wherein the carrier fluid has a pH between about 4.0 and about 8.0. 14. The method of claim 8, wherein the particulate pack is a proppant pack disposed in one or more fractures in the subterranean formation. 15. The method of claim 8, wherein the particulate pack has a retained permeability of about 40% or more as determined using a temperature-promoted diagenesis test using formation conditions expected for the subterranean formation. 16. The method of claim 8, wherein the existing coating comprises a filler material that is less than 20 micrometers in size, the filler material filling pores, voids, crevices, cracks or channels that are present on a surface of the particulates. 17. The method of claim 16, wherein the filler material is coated with the hydrophobic substance to form a hydrophobically coated filler material, the hydrophobically coated filler material being applied to the particulates to form the existing coating thereon. 18. A method comprising: providing a treatment fluid comprising: a carrier fluid; anda plurality of particulates; wherein at least some of the particulates comprise an existing coating that impedes the intrusion of water into the particulates, the existing coating comprising a ceramic having a thickness ranging between about 100 nanometers and about 50,000 nanometers;adding a silica scale control additive to the carrier fluid;introducing the treatment fluid into a subterranean formation;allowing at least some of the particulates to form a particulate pack in the subterranean formation; andsuppressing silica scale build-up proximate to the particulate pack with the silica scale control additive. 19. The method of claim 18, wherein the ceramic comprises a substance selected from the group consisting of silicon carbide; silicon nitride; boron carbide; diamond-like carbon; titanium carbide; aluminum nitride; chromium carbide; mixed carbide, nitride, and carbonitride alloys; cubic boron nitride, derivatives thereof; and combinations thereof. 20. A method comprising: providing a particulate pack in a subterranean formation; wherein the particulate pack comprises at least some particulates comprising an existing coating that impedes the intrusion of water into the particulates, the existing coating comprising a ceramic having a thickness ranging between about 100 nanometers and about 50,000 nanometers;after providing the particulate pack in the subterranean formation, introducing a treatment fluid comprising a silica scale control additive into the subterranean formation; andsuppressing silica scale build-up proximate to the particulate pack with the silica scale control additive. 21. The method of claim 20, wherein the ceramic comprises a substance selected from the group consisting of silicon carbide; silicon nitride; boron carbide; diamond-like carbon; titanium carbide; aluminum nitride; chromium carbide; mixed carbide, nitride, and carbonitride alloys; cubic boron nitride, derivatives thereof; and combinations thereof.