US 11,746,279 B2
Fracturing fluids based on viscoelastic surfactants
Rajendra Arunkumar Kalgaonkar, Dhahran (SA); Eyad Alali, Dammam (SA); Mohammed Abudullah Bataweel, Dhahran (SA); Nisar Ullah, Dhahran (SA); and Muhammad Mansha, Dhahran (SA)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA); and KING FAHD UNIVERSITY OF PETROLEUM & MINERALS, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA); and KING FAHD UNIVERSITY OF PETROLEUM & MINERALS, Dhahran (SA)
Filed on Nov. 12, 2021, as Appl. No. 17/454,719.
Prior Publication US 2023/0159816 A1, May 25, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C09K 8/62 (2006.01); C09K 8/80 (2006.01)
CPC C09K 8/62 (2013.01) [C09K 8/80 (2013.01); C09K 2208/30 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method of treating a hydrocarbon-bearing formation comprising:
injecting a fracturing fluid in the hydrocarbon-bearing formation, the fracturing fluid comprising:
a first surfactant having a structure represented by Formula (I):

OG Complex Work Unit Chemistry
where m is an integer ranging from 2 to 3, and n, o, and k are each, independently, integers ranging from 2 to 10,
a second surfactant having a structure represented by Formula (II):

OG Complex Work Unit Chemistry
wherein R2 is a C15-C27 hydrocarbon group or a C15-C29 substituted hydrocarbon group, R3 is a C1-C10 hydrocarbon group, and p and q are each, independently, an integer ranging from 1 to 4, and
an alkaline activator,
wherein the fracturing fluid is configured to transport a proppant into the hydrocarbon-bearing formation.