CPC C09K 8/604 (2013.01) [C09K 8/602 (2013.01); C09K 8/68 (2013.01); C09K 8/74 (2013.01); C09K 8/80 (2013.01); C09K 8/86 (2013.01); E21B 43/267 (2013.01); E21B 43/27 (2020.05); E21B 47/11 (2020.05); C09K 2208/10 (2013.01); C09K 2208/12 (2013.01); C09K 2208/26 (2013.01); C09K 2208/28 (2013.01); C09K 2208/32 (2013.01)] | 20 Claims |
19. A method for treating an unconventional subterranean formation with a fluid, comprising:
providing an aqueous-based injection fluid for treating the unconventional subterranean formation, the unconventional subterranean formation having a rock matrix with an average pore size less than 0.1 micrometers;
adding a single-phase liquid surfactant package comprising an anionic surfactant to the aqueous-based injection fluid to form a low particle size injection fluid; and
introducing the low particle size injection fluid into the rock matrix of the unconventional subterranean formation,
wherein the low particle size injection fluid is aqueous stable and has a maximum particle size of less than 0.1 micrometers in diameter particle size distribution measurement when measured at a temperature and salinity of the unconventional subterranean formation.
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