INVERTING PACKAGES, EMULSIONS, AND METHODS

1 . A composition comprising:

water;

a hydrophobic liquid;

a polymer comprising two or more different repeat units; and

a breaker comprising one or more inverting surfactants;

wherein the one or more inverting surfactants comprises a tallow amine ethoxylate;

wherein the two or more different repeat units comprise a repeat unit comprising a sulfonic acid moiety or a sulfonate moiety; and

wherein—

(i) the breaker is present in the composition at an amount of about 2.5% to about 50%, by weight, based on the weight of the composition, or

(ii) the tallow amine ethoxylate is present in the breaker at an amount of at least 30%, by weight, based on the weight of the breaker, or

(iii) the tallow amine ethoxylate is present in the composition at an amount of about 2.5% to about 15%, by weight, based on the weight of the composition, or

(iv) a combination thereof.

2 . The composition of claim 1 , wherein the tallow amine ethoxylate is present in the breaker at an amount of at least 90%, by weight, based on the weight of the breaker.

3 . The composition of claim 1 , wherein the tallow amine ethoxylate comprises a compound of Formula I:

wherein R 1 is selected from the group consisting of a C 14 -C 18 hydrocarbyl and

and

wherein X and Y, independently, are 1 to 20.

4 . The composition of claim 1 , wherein the tallow amine ethoxylate has an HLB-value of about 9 to about 16.

5 . The composition of claim 1 , wherein the tallow amine ethoxylate comprises TAM-2, TAM-5, TAM-8, TAM-10, TAM-15, TAM-20, or a combination thereof.

6 . The composition of claim 1 , wherein the repeat unit comprising a sulfonic acid moiety or a sulfonate moiety is derived from a monomer selected from the group consisting of acrylamide tertiary butyl sulfonic acid (ATBS), vinylsulfonic acid, allylsulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methacrylamido-2-methylpropanesulfonic acid, 2-acrylamidobutanesulfonic acid, 3-acrylamido-3-methylbutanesulfonic acid, and 2-acrylamido-2,4,4-trimethylpentanesulfonic acid.

7 . The composition of claim 1 , wherein the repeat unit comprising the sulfonic acid moiety or the sulfonate moiety is present in the polymer at a mol % of about 0.1 to about 50.

8 . The composition of claim 1 , wherein the two or more different repeat units further comprise an acrylamide repeat unit, an acrylic acid repeat unit, or a combination hereof.

9 . The composition of claim 8 , wherein the acrylamide repeat unit is present in the polymer at a mol % of about 50 to about 99.9.

10 . The composition of claim 1 , further comprising a chain transfer agent, wherein the chain transfer agent is present in the composition at a concentration of about 1 ppm to about 2,000 ppm.

11 . An inverted emulsion comprising:

the composition of claim 1 ; and

an additional amount of water;

wherein the polymer comprising two or more different repeat units is present in the inverted emulsion at a concentration of about 50 ppm to about 15,000 ppm.

12 . The inverted emulsion of claim 11 , wherein the additional amount of water comprises a brine.

13 . A method of treating a subterranean formation, the method comprising:

providing a treatment fluid comprising the inverted emulsion of claim 11 ; and

injecting the treatment fluid into the subterranean formation.

14 . The method of claim 13 , wherein the injecting of the treatment fluid is performed at a pressure effective to create one or more fractures in the subterranean formation.

15 . The method of claim 13 , wherein the inverted emulsion achieves a friction reduction that is at least 12 percentage points greater than a comparative friction reduction achieved by a comparative inverted emulsion comprising a comparative breaker comprising 30%, by weight, or less of a tallow amine ethoxylate, based on the weight of the comparative breaker.