US 12,441,926 B2
Scale inhibitor compositions and methods of using the same
Marko Stipanicev, Sandsli (NO); and Alexander Colin Nelson, Sandsli (NO)
Assigned to CAMERON INTERNATIONAL CORPORATION, Houston, TX (US)
Appl. No. 18/257,972
Filed by Cameron International Corporation, Houston, TX (US)
PCT Filed Dec. 16, 2021, PCT No. PCT/US2021/063841
§ 371(c)(1), (2) Date Jun. 16, 2023,
PCT Pub. No. WO2022/133106, PCT Pub. Date Jun. 23, 2022.
Claims priority of provisional application 63/199,299, filed on Dec. 18, 2020.
Prior Publication US 2024/0052229 A1, Feb. 15, 2024
Int. Cl. C09K 8/035 (2006.01); C09K 8/528 (2006.01); C09K 8/54 (2006.01)
CPC C09K 8/035 (2013.01) [C09K 8/528 (2013.01); C09K 8/54 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A composition for treating a subterranean hydrocarbon producing formation and/or oilfield equipment, the composition comprising:
a scale inhibitor comprising an acrylic acid terpolymer at a concentration greater than about 35 weight percent (wt. %) of a total weight of the composition, wherein the acrylic acid terpolymer comprises one or more acrylate subunits, one or more vinyl sulphonate subunits, and one or more phosphonate end-caps;
a corrosion inhibitor comprising at least one acid;
a neutralizing agent; and
a solvent, wherein a ratio of a total amount of the acrylic acid terpolymer to a total amount of the solvent ranges from about 1:1 to about 1:3.