Low molecular weight graft polymer for scale inhibitor
AssigneeHercules Incorporated
InventorsJanice Jianzhao WANG, Mohand Melbouci
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Abstract
The presently disclosed and/or claimed concept(s) relates generally to a composition comprising a low molecular weight graft polymer. The graft polymer is a graft homopolymer, copolymer or terpolymer. Additionally, the presently disclosed and/or claimed inventive concept(s) relates to a scale inhibitor composition comprising the low molecular weight graft polymer. Furthermore, the presently disclosed and/or claimed inventive concept(s) relates to a process for preventing the deposition of scale from water or aqueous solution and a method for scale inhibition treatment of an oil or gas production well by using the low molecular weight graft polymer. The scale inhibitor is low corrosive for application in the oilfield.
Claims24
A composition comprising:
- a graft homopolymer produced by polymerizing a mono-ethylenically unsaturated carboxylic acid monomer to form a homopolymer and grafting a morpholine compound onto the homopolymer.
A composition comprising:
- a graft copolymer produced by polymerizing a mono-ethylenically unsaturated carboxylic acid monomer and a mono-ethylenically unsaturated monomer to form a copolymer and grafting a morpholine compound onto the copolymer.
A composition comprising:
- a graft terpolymer produced by polymerizing a mono-ethylenically unsaturated carboxylic acid monomer or mono-ethylenically unsaturated carboxylic anhydride monomer, vinyl acetate monomer and an alkyl acrylate monomer to form a terpolymer and grafting a morpholine compound onto the terpolymer.
Dependencies are inferred from the claim text.