US 11,912,925 B2
Compositions for enhanced oil recovery
Duy T. Nguyen, Richmond, TX (US); and Jenny L. Phan, Tomball, TX (US)
Assigned to ChampionX USA Inc., Sugar Land, TX (US)
Filed by ChampionX USA Inc., Sugar Land, TX (US)
Filed on Dec. 16, 2021, as Appl. No. 17/552,858.
Application 17/552,858 is a continuation of application No. 15/633,031, filed on Jun. 26, 2017, granted, now 11,203,709.
Claims priority of provisional application 62/355,385, filed on Jun. 28, 2016.
Prior Publication US 2022/0106515 A1, Apr. 7, 2022
Int. Cl. C09K 8/04 (2006.01); C09K 8/60 (2006.01); C09K 8/86 (2006.01); C09K 8/584 (2006.01); C09K 8/84 (2006.01); C09K 8/68 (2006.01); C09K 8/66 (2006.01); C09K 8/03 (2006.01); C09K 8/035 (2006.01); C09K 8/80 (2006.01)
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
OG exemplary drawing
 
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:

OG Complex Work Unit Chemistry