Surfactant formulations and associated methods for reduced and delayed adsorption of the surfactant
View Patent ↗Compositions and methods for formulating treatment fluids that comprise a surfactant having reduced and delayed adsorption. In one embodiment, the method comprises: providing a fluid comprising: an aqueous base fluid, a surfactant, and a polyelectrolyte; introducing the fluid into a wellbore penetrating at least a portion of a subterranean formation; and contacting at least a portion of the subterranean formation with the polyelectrolyte. In another embodiment, the method comprises providing a fluid comprising: an aqueous base fluid, a surfactant, and a polyelectrolyte; injecting the fluid into a wellbore penetrating at least a portion of a subterranean formation at a pressure sufficient to create or enhance one or more fractures within the subterranean formation; and contacting at least a portion of the subterranean formation with the polyelectrolyte.
1. A method comprising:
providing a fluid comprising:
an aqueous base fluid,
a surfactant having an ionic charge, and
a polyelectrolyte with a molecular weight of from about 100 Daltons to about 300,000 Daltons, wherein the polyelectrolyte has the same ionic charge as the surfactant;
introducing the fluid into a wellbore penetrating at least a portion of a subterranean formation; and
contacting at least a portion of the subterranean formation with the polyelectrolyte, wherein the step of contacting at least a portion of the subterranean formation with the polyelectrolyte prevents the surfactant from adsorbing on the subterranean formation.
2. The method of claim 1 wherein the fluid is a fracturing fluid, an acidizing fluid, or a drilling fluid.
3. The method of claim 1 wherein the surfactant comprises at least one surfactant selected from the group consisting of sodium, potassium, and ammonium salts of long chain alkyl sulfonates and alkyl aryl sulfonates; dialkyl sodium sulfosuccinates; alkyl sulfates; alkyl sulfonates; alkoxylated sulfates; ethoxylated alcohols; polyglucosides; ethoxylated long-chain alcohols; alkyl ammonium bromides; hydroxysultaines; and any combination thereof.
4. The method of claim 1 wherein the polyelectrolyte comprises at least one polyelectrolyte selected from the group consisting of polyacrylate, poly(styrenesulfonic acid), poly(2-acrylamido-2-methyl-1-propane sulfonic acid), sulfonated poly(ether ether ketone), sulfonated lignin, poly(ethylenesulfonic acid), poly(methacryloxyethylsulfonic acid), poly(acrylic acid), poly(methacrylic acid), HV-sodium alginate, sodium alginate, sodium hyaluronate, heparin sulfate, cellulose sulfate, kappa carrageenan, pentasodium tripolyphosphate, low-esterified pectin(polygalacturonic acid), polyglutamic acid, carboxymethylcellulose, chondroitin sulfate-6, chondroitin sulfate-4, collagen, polyalkylene imines, polyethylene polyamine, polypropylene polyamine, polyvinylamine, polyallylamine, poly(vinylalcohol/vinylamine), chitosan, polylysine, polymyxin, spermine hydrochloride, protamine sulfate, poly(methylene-co-guanidine) hydrochloride, polythethylenimine-ethoxylated, polyethylenimine-ex-ichlorhydrin modified, and any combination thereof.
5. The method of claim 4 wherein the polyelectrolyte has a molecular weight of about 100 Daltons to about 15,000 Daltons.
6. The method of claim 1 wherein the polyelectrolyte and the surfactant are both anionic.
7. The method of claim 1 wherein the subterranean formation is an unconventional formation.
8. The method of claim 7 wherein the unconventional formation is a shale play.
9. A method comprising:
providing a fluid comprising:
an aqueous base fluid,
a surfactant having an ionic charge, and
a polyelectrolyte with a molecular weight of from about 100 Daltons to about 300,000 Daltons, wherein the polyelectrolyte has the same ionic charge as the surfactant;
injecting the fluid into a wellbore penetrating at least a portion of a subterranean formation at a pressure sufficient to create or enhance one or more fractures within the subterranean formation; and
contacting at least a portion of the subterranean formation with the polyelectrolyte, wherein the step of contacting at least a portion of the subterranean formation with the polyelectrolyte prevents the surfactant from adsorbing on the subterranean formation.
10. The method of claim 9 wherein the surfactant comprises at least one surfactant selected from the group consisting of sodium, potassium, and ammonium salts of long chain alkyl sulfonates and alkyl aryl sulfonates; dialkyl sodium sulfosuccinates; alkyl sulfates; alkyl sulfonates; alkoxylated sulfates; ethoxylated alcohols; polyglucosides; ethoxylated long-chain alcohols; alkyl ammonium bromides; hydroxysultaines; and any combination thereof.
11. The method of claim 9 wherein the polyelectrolyte comprises at least one polyelectrolyte selected from the group consisting of polyacrylate, poly(styrenesulfonic acid), poly(2-acrylamido-2-methyl-1-propane sulfonic acid), sulfonated poly(ether ether ketone), sulfonated lignin, poly(ethylenesulfonic acid), poly(methacryloxyethylsulfonic acid), poly(acrylic acid), poly(methacrylic acid), HV-sodium alginate, sodium alginate, sodium hyaluronate, heparin sulfate, cellulose sulfate, kappa carrageenan, pentasodium tripolyphosphate, low-esterified pectin(polygalacturonic acid), polyglutamic acid, carboxymethylcellulose, chondroitin sulfate-6, chondroitin sulfate-4, collagen, polyalkylene imines, polyethylene polyamine, polypropylene polyamine, polyvinylamine, polyallylamine, poly(vinylalcohol/vinylamine), chitosan, polylysine, polymyxin, spermine hydrochloride, protamine sulfate, poly(methylene-co-guanidine) hydrochloride, polythethylenimine-ethoxylated, polyethylenimine-ex-ichlorhydrin modified, and any combination thereof.
12. The method of claim 11 wherein the polyelectrolyte has a molecular weight of about 100 Daltons to about 15,000 Daltons.
13. The method of claim 9 wherein the polyelectrolyte and the surfactant are both anionic.
14. The method of claim 9 wherein the subterranean formation is an unconventional formation.
15. The method of claim 9 wherein the fluid is injected into the wellbore using one or more pumps.
16. A composition comprising:
an aqueous base fluid,
a surfactant comprising at least one surfactant selected from the group consisting of sodium, potassium, and ammonium salts of long chain alkyl sulfonates and alkyl aryl sulfonates; dialkyl sodium sulfosuccinates; alkyl sulfates; alkyl sulfonates; alkoxylated sulfates; ethoxylated alcohols; polyglucosides; ethoxylated long-chain alcohols; alkyl ammonium bromides; hydroxysultaines; and any combination thereof, wherein the surfactant has an ionic charge, and
a polyelectrolyte comprising at least one polyelectrolyte selected from the group consisting of polyacrylate, poly(styrenesulfonic acid), poly(2-acrylamido-2-methyl-1-propane sulfonic acid), sulfonated poly(ether ether ketone), sulfonated lignin, poly(ethylenesulfonic acid), poly(methacryloxyethylsulfonic acid), poly(acrylic acid), poly(methacrylic acid), HV-sodium alginate, sodium alginate, sodium hyaluronate, heparin sulfate, cellulose sulfate, kappa carrageenan, pentasodium tripolyphosphate, low-esterified pectin(polygalacturonic acid), polyglutamic acid, carboxymethylcellulose, chondroitin sulfate-6, chondroitin sulfate-4, collagen, polyalkylene imines, polyethylene polyamine, polypropylene polyamine, polyvinylamine, polyallylamine, poly(vinylalcohol/vinylamine), chitosan, polylysine, polymyxin, spermine hydrochloride, protamine sulfate, poly(methylene-co-guanidine) hydrochloride, polythethylenimine-ethoxylated, polyethylenimine-ex-ichlorhydrin modified, and any combination thereof, wherein the polyelectrolyte has a molecular weight of from about 100 Daltons to about 300,000 Daltons, and wherein the polyelectrolyte has the same ionic charge as the surfactant.
17. The composition of claim 16 wherein the polyelectrolyte has a molecular weight of about 100 Daltons to about 15,000 Daltons.
18. The composition of claim 16 wherein the surfactant is present in an amount from about 0.1 gallons of surfactant per thousand gallons of base fluid to about 50 gallons of surfactant per thousand gallons of base fluid.
19. The composition of claim 16 wherein the polyelectrolyte is present in an amount from about 0.01 gallons of polyelectrolyte per thousand gallons of base fluid to about 1000 gallons of polyelectrolyte per thousand gallons of base fluid.
20. The composition of claim 16 further comprising a plurality of proppant particles.