US 11,999,902 B1
Chemical enhanced hydrocarbon recovery
Dustin L. Walker, Irving, TX (US); Joshua W. Brownlow, Irving, TX (US); and Kyle D. Scott, Irving, TX (US)
Assigned to Pioneer Natural Resources USA, Inc., Irving, TX (US)
Filed by Pioneer Natural Resources USA, Inc., Irving, TX (US)
Filed on Jan. 31, 2024, as Appl. No. 18/428,077.
Application 18/428,077 is a continuation of application No. 17/823,271, filed on Aug. 30, 2022, granted, now 11,920,084.
Claims priority of provisional application 63/260,781, filed on Aug. 31, 2021.
Int. Cl. C09K 8/584 (2006.01); E21B 43/20 (2006.01)
CPC C09K 8/584 (2013.01) [E21B 43/20 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An enhanced hydrocarbon recovery composition comprising:
a surfactant component comprising a mixture of isomerized C9-11 ethoxylated alcohols;
wherein the mixture of isomerized C9-11 ethoxylated alcohols comprises a C9 ethoxylated alcohol, a C10 ethoxylated alcohol, a C11 ethoxylated alcohol, isomers of the C9 ethoxylated alcohol, isomers of the C10 ethoxylated alcohol, and isomers of the C11 ethoxylated alcohol, and
wherein an amount of the C10 ethoxylated alcohol and the isomers of the C10 ethoxylated alcohol in the mixture of isomerized C9-11 ethoxylated alcohols is greater than about 50 wt % based on a total weight of the mixture of isomerized C9-11 ethoxylated alcohols.