Method of servicing a wellbore with an aqueous gel containing a friction reducer
A well may be serviced with a fluid formulated with components comprising a friction reducer having at least one polymer unit chosen from acrylamide groups, acrylate groups, sulfo groups, and maleic acid groups; and an anionic surfactant, a cationic surfactant and an aqueous base capable of forming a viscoelastic gel.
1. A method of servicing a wellbore, the method comprising introducing into the wellbore a well servicing fluid comprising an aqueous based viscoelastic gel and a friction reducer dissolved in the aqueous based viscoelastic gel, the friction reducer having at least one polymer unit chosen from acrylamide groups, acrylate groups, sulfo groups, and maleic acid groups; and the aqueous based gel comprising an anionic surfactant and a cationic surfactant and wherein the concentration of friction reducer is about 0.5 pounds per thousand gallons or less, based on the total well servicing fluid.
2. The method of claim 1 , wherein the well servicing fluid is a completion fluid.
3. The method of claim 1 , wherein the well servicing fluid is either a fluid loss pill or a loss circulation pill.
4. The method claim 1 , wherein the well servicing fluid is a gravel pack fluid.
5. The method of claim 1 , wherein the friction reducer is a copolymer of sodium acrylate and acrylamide.
6. The method of claim 1 , wherein the friction reducer is a dry powder.
7. The method of claim 1 , wherein the friction reducer is anionic.
8. The method of claim 1 , wherein the friction reducer is cationic.
9. The method of claim 1 , wherein the friction reducer is nonionic.
10. The method of claim 1 , wherein the aqueous base is a liquid chosen from fresh water, brine, and produced water.
11. The method of claim 1 , wherein the fluid is formulated with at least one breaker.
12. The method of claim 1 , wherein the fluid is formulated with at least one additional compound chosen from water wetting surfactants, non-emulsifiers, additional viscosifying agents, additional surfactants, clay stabilization additives, scale dissolvers, biopolymer degradation additives, fluid loss control additives and high temperature stabilizers.
13. The method of claim 1 , wherein the fluid does not comprise mineral oil.
14. A method of fracturing a subterranean formation penetrated by a wellbore, the method comprising:
introducing into the wellbore at a pressure sufficient to initiate a fracture a well servicing fluid comprising an aqueous based gel and a friction reducer dissolved in the aqueous based gel, the friction reducer having at least one polymer unit chosen from acrylamide groups, acrylate groups, sulfo groups, and maleic acid groups; and the aqueous based gel comprising an anionic surfactant and a cationic surfactant, wherein the concentration of friction reducer is about 0.5 pounds per thousand gallons or less, based on the total well servicing fluid.
15. The method of claim 14 , wherein the fluid further comprises a proppant selected from the group consisting of sand, glass, ceramic, bauxite, walnut shell fragments, aluminum pellets and nylon pellets and combination thereof.
16. The method of claim 14 , wherein the friction reducer is a copolymer of sodium acrylate and acrylamide.
17. The method of claim 14 , wherein the aqueous base is a liquid chosen from fresh water, brine, and produced water.
18. A method of reducing the friction of a viscoelastic gel during the pumping of the viscoelastic gel through pumping equipment and/or well tubulars within a wellbore, the method comprising introducing into the pumping equipment or wellbore a well servicing fluid comprising an aqueous based viscoelastic gel and a friction reducer dissolved in the aqueous based viscoelastic gel, the friction reducer having at least one polymer unit chosen from acrylamide groups, acrylate groups, sulfo groups, and maleic acid groups; and the aqueous based viscoelastic gel comprising an anionic surfactant and a cationic surfactant and wherein the concentration of friction reducer is about 0.5 pounds per thousand gallons or less, based on the total well servicing fluid.
19. The method of claim 18 , wherein the amount of friction reducer dissolved in the aqueous based viscoelastic gel is between from about 0.05 to about 0.25 pounds per thousand gallons (pptg).
20. The method of claim 18 , wherein the friction reducer is a copolymer of sodium acrylate and acrylamide.