	US 12,325,824 B2
	Composition and method for improving the production of petroleum hydrocarbons
Jiangshui Huang, Sugar Land, TX (US); Nancy Zhou, Sugar Land, TX (US); Lijun Lin, Katy, TX (US); Fuchen Liu, Panjin (CN); Guodong Wu, Beijing (CN); and Bo Huang, Beijing (CN)
Assigned to CNPC USA Corporation, Houston, TX (US); Beijing Huamei, Inc., Beijing (CN); and China National Petroleum Corporation, Beijing (CN)
Filed by CNPC USA Corporation, Houston, TX (US); Beijing Huamei, Inc., Beijing (CN); and China National Petroleum Corporation, Beijing (CN)
Filed on Dec. 21, 2023, as Appl. No. 18/392,303.
Application 17/987,246 is a division of application No. 16/948,368, filed on Sep. 15, 2020, granted, now 11,499,091, issued on Nov. 15, 2022.
Application 18/392,303 is a continuation of application No. 17/987,246, filed on Nov. 15, 2022, granted, now 11,851,612.
Prior Publication US 2024/0228862 A1, Jul. 11, 2024
Int. Cl. C09K 8/68 (2006.01); C09K 8/584 (2006.01); C09K 8/60 (2006.01); C09K 8/66 (2006.01); E21B 37/06 (2006.01); E21B 41/02 (2006.01); E21B 43/26 (2006.01)

CPC C09K 8/68 (2013.01) [C09K 8/584 (2013.01); C09K 8/602 (2013.01); C09K 8/665 (2013.01); E21B 43/26 (2013.01); E21B 37/06 (2013.01); E21B 41/02 (2013.01)]

19 Claims

1. A method of increasing the production of petroleum hydrocarbons, comprising:

formulating a surfactant solution, comprising:

a first surfactant;

a second surfactant;

a solvent; and

water;

wherein the first surfactant comprises an anionic surfactant and the second surfactant comprises a nonionic surfactant, and wherein the ratio between the first surfactant to the second surfactant is about 0.30 to about 0.44;

mixing the surfactant solution with a fracturing fluid to form a fracturing fluid composition; and

injecting the fracturing fluid composition into a well bore at a flow rate and pressure sufficient to fracture the subterranean formation;

wherein the production of petroleum hydrocarbons from the well bore is increased in comparison to production of petroleum hydrocarbons if the surfactant solution was not added to the fracturing fluid composition.