US 11,840,908 B2
Acidizing fluid and method of improving hydrocarbon recovery using the same utilizing a surfactant consisting of an oil mixture
Abdulrahman M. Bin Omar, Dammam (SA); Abdulaziz S. Al-Qasim, Dammam (SA); Abdullah M. Moajil, Dammam (SA); and Sajjad S. Aldarweesh, Dammam (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Sep. 30, 2021, as Appl. No. 17/489,897.
Claims priority of provisional application 63/086,135, filed on Oct. 1, 2020.
Prior Publication US 2022/0106862 A1, Apr. 7, 2022
Int. Cl. C09K 8/34 (2006.01); E21B 43/16 (2006.01)
CPC E21B 43/16 (2013.01) [C09K 8/34 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An acidizing fluid suitable for use in acid treatment of subterranean formations, the acidizing fluid comprising:
an aqueous base fluid;
an acid selected from the group consisting of hydrochloric acid, hydrofluoric acid, sulfonic acid, sulfonic acid derivatives, in situ generated acids, carboxylic acids, and combinations of two or more of these; and
a surfactant consisting of an oil mixture selected from the group consisting of jojoba oil, castor oil, cactus oil, almond oil, or combinations thereof, wherein:
the acidizing fluid comprises the acid in a concentration of from 1% by volume of the acidizing fluid to 24% by volume of the acidizing fluid, and
the acidizing fluid comprises no more than 5% by volume oil mixture.