Patent ID: 11866644
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  E | IPC C  E

Claim 6:
7. A method of treating a hydrocarbon-bearing formation comprising:
introducing a fracturing fluid in the hydrocarbon-bearing formation, the fracturing fluid comprising:
0.1 to 20 vol. % of a glutamate-based chelating agent;
0.1 to 20 vol. % of a guar gum derivative polymeric gelling agent; and
a base fluid; wherein the base fluid is produced fluid having a hardness content of at least 7,000 ppm,
wherein the fracturing fluid has a pH of 7 or less, and
wherein the fracturing fluid has a viscosity of at least 200 cp at 150° F., 100 1/s shear rate, and 300 psia when tested using model 5550 HPHT rheometer, and after contacting the hydrocarbon-bearing formation, the viscosity of the fracturing fluid drops near a range of 1 cP to 5 cP.