US 12,227,693 B2
Aqueous fluid compositions and barite scale removal therewith
Harry Daniel Oduro, Dhahran (SA); and Saleh Abdulrahman Haidary, Dhahran (SA)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Sep. 9, 2022, as Appl. No. 17/930,843.
Prior Publication US 2024/0093082 A1, Mar. 21, 2024
Int. Cl. C09K 8/54 (2006.01); C09K 8/528 (2006.01); E21B 37/06 (2006.01)
CPC C09K 8/528 (2013.01) [C09K 8/54 (2013.01); E21B 37/06 (2013.01); C09K 2208/20 (2013.01)] 23 Claims
 
1. An aqueous fluid composition comprising:
a concentrated mineral acid comprising concentrated hydroiodic acid;
a first salt comprising an iodide anion; and
a second salt comprising an anion that forms an aqueous-soluble barium salt;
wherein a molar ratio of total iodide ions to second salt in the aqueous fluid composition is about 5 to about 10; and
wherein water from the concentrated mineral acid is the sole source of water in the aqueous fluid composition, other than trace moisture, or up to about 10 vol. % additional water from a source other than the concentrated mineral acid is present in the aqueous fluid composition.