US 12,345,129 B2
Foamed squeeze treatment in wells
Qiwei Wang, Dhahran (SA); Tao Chen, Dhahran (SA); and Hemant K. Sharma, Udhailiyah (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Sep. 18, 2023, as Appl. No. 18/469,079.
Prior Publication US 2025/0092761 A1, Mar. 20, 2025
Int. Cl. E21B 37/06 (2006.01); C09K 8/536 (2006.01); C09K 8/54 (2006.01)
CPC E21B 37/06 (2013.01) [C09K 8/536 (2013.01); C09K 8/54 (2013.01)] 20 Claims
OG exemplary drawing
 
20. A method of treating a subterranean formation to protect against solid deposition and corrosion attack, the method comprising:
flowing a pre-flush fluid to a specified downhole location within the subterranean formation;
flowing a main treatment treatment fluid to the specified downhole location, wherein the main treatment fluid comprises a scale inhibitor configured to inhibit formation of scale within the subterranean formation; and
flowing an aqueous fluid and a gas together at turbulent flow to the specified downhole location, thereby generating an overflush foam that is shear thinning and non-Newtonian and flows to the specified downhole location.