Chemical enhanced hydrocarbon recovery

1. A chemical enhanced hydrocarbon recovery method comprising:

introducing an enhanced hydrocarbon recovery composition comprising a surfactant component and a water component into a subterranean formation via a wellbore;

wherein the surfactant component comprises a mixture of isomerized C 9-11 ethoxylated alcohols;

wherein the mixture of isomerized C 9-11 ethoxylated alcohols comprises a C 9 ethoxylated alcohol, a C 10 ethoxylated alcohol, a C 11 ethoxylated alcohol, isomers of the C 9 ethoxylated alcohol, isomers of the C 11 ethoxylated alcohol, and isomers of the C 11 ethoxylated alcohol; and

wherein an amount of the C 11 ethoxylated alcohol and the isomers of the C 10 ethoxylated alcohol in the mixture of isomerized C 9-11 ethoxylated alcohols is greater than about 50 wt % based on a total weight of the mixture of isomerized C 9-11 ethoxylated alcohols.

2. The method of claim 1 , wherein an amount of the C 11 ethoxylated alcohol and the isomers of the C 11 ethoxylated alcohol in the mixture of isomerized C 9-11 ethoxylated alcohols is in a range of from about 1 wt % to about 25 wt % based on a total weight of the mixture of isomerized C 9-11 ethoxylated alcohols.

3. The method of claim 2 , wherein an amount of the C 9 ethoxylated alcohol and the isomers of the C 9 ethoxylated alcohol in the mixture of isomerized C 9-11 ethoxylated alcohols is in a range of from about 1 wt % to about 25 wt % based on a total weight of the mixture of isomerized C 9-11 ethoxylated alcohols.

4. The method of claim 1 , further comprising:

prior to the introducing step, producing a first hydrocarbon product from the wellbore; and

after the introducing step, producing a second hydrocarbon product from the wellbore,

wherein the first hydrocarbon product has a first composition that is different than a second composition of the second hydrocarbon product.

5. The method of claim 1 , further comprising:

allowing the introduced enhanced hydrocarbon recovery composition to settle, absorb, disperse, imbibe, or a combination thereof in the subterranean formation in which the wellbore is formed.

6. The method of claim 1 , wherein the wellbore is an unconventional wellbore, and wherein the subterranean formation is an unconventional subterranean formation.

7. The method of claim 1 , wherein the wellbore is a conventional wellbore, and wherein the subterranean formation is a conventional subterranean formation.

8. The method of claim 1 , wherein the surfactant component further comprises one or more anionic disulfonate surfactants.

9. The method of claim 8 , wherein the one or more anionic disulfonate surfactants comprise a sodium dodecyl (C 12 ) diphenyl oxide disulfonate salt and a sodium hexyl (C 6 ) diphenyl oxide disulfonate salt.

10. The method of claim 9 , wherein the dodecyl (C 12 ) group in the sodium dodecyl (C 12 ) diphenyl oxide disulfonate salt is branched.

11. The method of claim 9 , wherein the sodium dodecyl (C 12 ) diphenyl oxide disulfonate salt and the sodium hexyl (C 6 ) diphenyl oxide disulfonate salt are present in a range of from about 40 wt % to about 50 wt % of the surfactant component.

12. The method of claim 1 , wherein the mixture of isomerized C9-11 ethoxylated alcohols is present in a range of from about 50 wt % to about 100 wt % of the surfactant component, wherein the mixture of isomerized C 9-11 ethoxylated alcohols has an average distribution of 8 EO units.

13. The method of claim 1 , wherein the surfactant component is present in a range of from about 0.01 wt % to about 5 wt % based on a total weight of the enhanced hydrocarbon recovery composition.

14. The method of claim 1 , wherein:

the water component comprises fresh water, gray water, untreated produced water, treated produced water, or a combination thereof; and

wherein the water component is present in a range of from about 0.01 wt % to about 99.9 wt % based on a total weight of the enhanced hydrocarbon recovery composition.

15. The method of claim 1 , wherein the enhanced hydrocarbon recovery composition further comprises a biocide component.

16. The method of claim 15 , wherein the biocide component comprises glutaraldehyde, alkyl dimethyl benzyl ammonium chloride, or a combination thereof; and wherein the biocide component is present in a range of from about 0.001 wt % to about 1 wt % based on a total weight of the enhanced hydrocarbon recovery composition.

17. The method of claim 1 , wherein the enhanced hydrocarbon recovery composition further comprises:

an alkali component comprising sodium carbonate, sodium hydroxide, or a combination thereof;

wherein the alkali component is present in a range of from about 0.01 wt % to about 1.0 wt % based on a total weight of the enhanced hydrocarbon recovery composition.

18. The method of claim 1 , wherein the enhanced hydrocarbon recovery composition further comprises:

a cosolvent component comprising methanol, ethanol, isopropyl alcohol, propylene glycol, ethylene glycol mono-butyl ether, diethylene mono-butyl ether, and tri-ethylene mono-butyl ether, or a combination thereof;

wherein the cosolvent component is present in a range of from about 0.01 wt % to about 5.0 wt % based on a total weight of the enhanced hydrocarbon recovery composition.

19. The method of claim 1 , wherein the enhanced hydrocarbon recovery composition further comprises:

a hydrotrope component comprising sodium toluene sulfonate, potassium toluene sulfonate, sodium xylene sulfonate, ammonia xylene sulfonate, potassium xylene sulfonate, calcium xylene sulfonate, sodium cumene sulfonate, ammonia cumene sulfonate, or a combination thereof;

wherein the hydrotrope component is present in a range of from about 0.01 wt % to about 5 wt % based on a total weight of the enhanced hydrocarbon recovery composition.

20. The method of claim 1 , wherein the enhanced hydrocarbon recovery composition further comprises:

a viscosifying component comprising hydrolyzed polyacrylamide, xantham gum, scleroglucan, or a combination thereof;

wherein the viscosifying component is present in a range of from about 0.01 wt % to about 5 wt % based on a total weight of the enhanced hydrocarbon recovery composition.