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US 8,794,322 B2Granted
Additives to suppress silica scale build-up
AssigneeHalliburton Energy Services, Inc.
InventorsEnrique A. Reyes, Jimmie D. Weaver, Matt E. Blauch, David E. McMechan
Life of this patent
Estimating the term…
Abstract
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.
Claims21
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;
- and
- suppressing silica scale build-up proximate to the particulate pack with the silica scale control additive.
3 more elements
A method comprising:
- providing a treatment fluid comprising:
- a carrier fluid;
- and
- a 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;
- and
- suppressing silica scale build-up proximate to the particulate pack with the silica scale control additive.
8 more elements
A method comprising:
- providing a treatment fluid comprising:
- a carrier fluid;
- and
- a 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;
- and
- suppressing silica scale build-up proximate to the particulate pack with the silica scale control additive.
7 more elements
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;
- and
- suppressing silica scale build-up proximate to the particulate pack with the silica scale control additive.
2 more elements
Dependencies are inferred from the claim text.