Patent ID: 11905459
Assignee: BAKER HUGHES OILFIELD OPERATIONS LLC
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 7:
8. A method for inhibiting or preventing the formation of halite scales in an oilfield brine, which method comprises adding to an oilfield brine having a potential for halite scaling an amount of an additive effective to inhibit or prevent the formation of halite scales in the oilfield brine, where the additive comprises:
at least one non-water-soluble quaternary ammonium compound that is benzyl-alkyldimethyl ammonium chloride, where the alkyl group has from 2 to 30 carbon atoms and has an average molecular weight of from about 150 to about 700; and
at least one organic solvent selected from the group consisting of methanol, ethanol, diethylene glycol, triethylene glycol, and combinations thereof.