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US 2013/0281327 A1Published application
Alkyl hydrophobe surfactants
AssigneeBoard of Regents, The University of Texas System
InventorsUpali P. Weerasooriya, Gary A. Pope
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Abstract
Provided herein are inter alia novel compositions and methods having application in the field of enhanced oil recovery. In particular, the short hydrophobe compounds and mixtures thereof presented herein can be used, inter alia, for the recovery of a large range of crude oil compositions from challenging reservoirs.
Claims21
A compound having the formula:
- wherein
- R1 is R4-substituted or unsubstituted C8-C20 alkyl, R3-substituted or unsubstituted aryl or R3-substituted or unsubstituted cycloalkyl;
- R2 is independently hydrogen or methyl;
- R3 is independently R4-substituted or unsubstituted C1-C15 alkyl, R4-substituted or unsubstituted aryl or R4-substituted or unsubstituted cycloalkyl;
- R4 is independently unsubstituted aryl or unsubstituted cycloalkyl;
- n is an integer from 25 to 115;
- X is —SO3−M+, —CH2C(O)O−M+, —SO3H or —CH2C(O)OH;
- and
- M+ is a monovalent, divalent or trivalent cation.
6 more elements
Dependencies are inferred from the claim text.