	US 12,435,263 B2
	Treatment fluids for acid stimulation operations and methods related thereto
Rajesh Kumar Saini, Cypress, TX (US); Mohammed Sayed, Katy, TX (US); and Amy J. Cairns, Houston, TX (US)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on May 15, 2024, as Appl. No. 18/664,761.
Claims priority of provisional application 63/601,653, filed on Nov. 21, 2023.
Prior Publication US 2025/0163314 A1, May 22, 2025
Int. Cl. C09K 8/74 (2006.01); E21B 43/16 (2006.01); E21B 43/26 (2006.01)

CPC C09K 8/74 (2013.01) [E21B 43/16 (2013.01); E21B 43/26 (2013.01)]

9 Claims

1. A treatment fluid comprising:

an aqueous acid solution comprising a mineral acid and an organic acid; and

a retardation additive, wherein the retardation additive comprises:

1 wt % to 15 wt % of an oleaginous liquid;

5 wt % to 30 wt % of a fatty alkyl alcohol ethoxylate;

2 wt % to 40 wt % of at least one of an alkyl ether sulfate salt;

4 wt % to 30 wt % of a co-solvent; and

10 wt % to 85 wt % of an aqueous fluid, each wt % based on a total mass of the retardation additive, and wherein the retardation additive has a volume concentration in the treatment fluid of 0.5 gallons per thousand (gpt) to 5 gpt, based on an overall volume of the treatment fluid, and,

wherein the treatment fluid forms an oil-in-water emulsion.