US 12,297,718 B2
Methods of hydrolyzing nitrogen-containing waste plastics downgole to form a solid barrier
Shitong Sherry Zhu, Cambridge, MA (US); and Marta Antoniv, Cambridge, MA (US)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Oct. 18, 2023, as Appl. No. 18/489,675.
Prior Publication US 2025/0129690 A1, Apr. 24, 2025
Int. Cl. E21B 41/00 (2006.01); C09K 8/88 (2006.01)
CPC E21B 41/0064 (2013.01) [C09K 8/885 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method comprising:
introducing a treatment fluid into a subterranean formation wellbore comprising a water layer, the treatment fluid comprising:
an aqueous base fluid;
a solid, nitrogen-containing waste plastic; and
carbon dioxide;
hydrolyzing the nitrogen-containing waste plastic in the aqueous base fluid under conditions in the subterranean formation wellbore, thereby forming hydrolysis reaction products;
reacting the hydrolysis reaction products and the carbon dioxide in the subterranean formation wellbore; and
forming a solid barrier above the water layer as a result of the reacting.