Buffered friction reducer for subterranean operations
Systems and methods having friction reducer compositions for use in subterranean treatment fluids are presented. An embodiment is a method comprising: (A) forming a treatment fluid comprising: an aqueous base fluid, a friction reducer, and an alkaline buffering agent, wherein the treatment fluid has a pH in the range of about 7 to about 10; and (B) injecting the treatment 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.
1. A method comprising:
(A) providing a treatment fluid comprising:
an aqueous base fluid,
a friction reducer, and
an alkaline buffering agent,
wherein the treatment fluid has a pH in the range of about 7 to about 10; and
(B) injecting the treatment 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.
2. The method of claim 1 wherein the friction reducer comprises a linear polymer with a molecular weight greater than about 5,000 Daltons.
3. The method of claim 2 wherein the friction reducer comprises at least one polymer selected from the group consisting of: a polyacrylamide, a polyacrylamide derivatives, a polyacrylamide co-polymer, and any combination thereof.
4. The method of claim 1 wherein the alkaline buffering agent comprises at least one salt selected from the group consisting of: a bicarbonate salt, a carbonate salt, sodium hydroxide, potassium hydroxide, a chelating agent, a surfactant, and any combination thereof.
5. The method of claim 1 wherein the alkaline buffering agent comprises at least one salt selected from the group consisting of: a bicarbonate salt, a carbonate salt, and any combination thereof.
6. The method of claim 1 wherein the treatment fluid further comprises a plurality of proppant particles.
7. The method of claim 1 wherein the treatment fluid is injected into the wellbore using one or more pumps.
8. A method comprising:
(A) providing a treatment fluid emulsion comprising:
an external phase that comprises an aqueous base fluid,
a friction reducer,
an alkaline buffering agent comprising a surfactant, and
an internal oil phase,
wherein the external phase of the treatment fluid emulsion has a pH in the range of about 7 to about 10; and
(B) injecting the treatment fluid emulsion 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.
9. The method of claim 8 wherein the friction reducer comprises a linear polymer with a molecular weight greater than about 5,000 Daltons.
10. The method of claim 9 wherein the friction reducer comprises at least one polymer selected from the group consisting of: a polyacrylamide, a polyacrylamide derivatives, a polyacrylamide co-polymer, and any combination thereof.
11. The method of claim 8 wherein the alkaline buffering agent further comprises at least one salt selected from the group consisting of: a bicarbonate salt, a carbonate salt, a sodium hydroxide, a potassium hydroxide, a chelating agent, and any combination thereof.
12. The method of claim 8 wherein the alkaline buffering agent comprises at least one surfactant selected from the group consisting of: an alkoxylated sulfate, an alkoxylated carboxylate, and any combination thereof.
13. The method of claim 8 wherein the treatment fluid emulsion further comprises a plurality of proppant particles.
14. The method of claim 8 wherein the treatment fluid emulsion is injected into the wellbore using one or more pumps.