CPC C09K 8/584 (2013.01) [E21B 43/16 (2013.01)] | 10 Claims |
1. A solution for injection to a formation containing hydrocarbons, comprising:
an ionic liquid; and
a brine having a salinity of at least 60,000 ppm total dissolved solids (TDS),
wherein the ionic liquid is configured to lower an interfacial tension between the solution and the hydrocarbons in the formation, and
wherein the ionic liquid comprises hexadecyl (2-hydroxyethyl) dimethylammonium dihydrogen phosphate, 1-benzyl-3-methylimidazolium chloride, 1-butyl-3-methylimidazolium hydrogen sulfate, or a combination thereof.
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