Patent ID: 11898093
Assignee: BAKER HUGHES OILFIELD OPERATIONS LLC
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  E | IPC C  E

Claim 0:
1. A composition comprising:
0.5 wt % to about 5 wt % of a surfactant blend comprising an alkoxy carbonate surfactant and an internal olefin sulfonate surfactant;
salt water having a total dissolved solids (TDS) of about 15,000 mg/L or greater;
0 wt % to about 0.05 wt % of an organic acid; and
an acidizing fluid comprising water and an acid selected from the group consisting of hydrofluoric acid, hydrochloric acid, acetic acid, formic acid, phosphoric acid, and combinations thereof, where the acid is present in a sufficient amount to cause the acidizing fluid to have a pH of about 1.5 to about 5.5;, wherein the composition has an interfacial tension at 60° C. with crude oil having a viscosity 2.5 cP at 60° C. and viscosity of 0.5 cP at 90° C. of about 0.1 mN/m or less.