CPC C09K 8/04 (2013.01) [C09K 8/032 (2013.01); C09K 8/035 (2013.01); C09K 8/584 (2013.01); C09K 8/60 (2013.01); C09K 8/602 (2013.01); C09K 8/665 (2013.01); C09K 8/68 (2013.01); C09K 8/80 (2013.01); C09K 8/845 (2013.01); C09K 8/86 (2013.01); C09K 2208/12 (2013.01)] | 15 Claims |
1. A method of increasing recovery of hydrocarbons from a hydrocarbon-containing subterranean fractured rock formation, the method comprising:
forming a flowback concentrate comprising a dimer surfactant and an anionic monomer surfactant;
contacting the flowback concentrate with a water source to form a flowback injectate, the flowback injectate comprising about 99 wt % to 99.999 wt % of the water source;
injecting the flowback injectate into the hydrocarbon-containing subterranean fractured rock formation; and
collecting a hydrocarbon from the hydrocarbon-containing subterranean fractured rock formation,
wherein the dimer surfactant comprises:
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