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US 10,370,581 B2Granted
Gas hydrate inhibitor, method and use of hyperbranched polyester polyols as gas hydrate inhibitors
AssigneeSinvent AS
InventorsMartin Fossen, Helene Konstantia Vralstad
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Abstract
The present invention relates to a non-toxic and biodegradable low dosage gas hydrate inhibitor comprising hyper-branched polyester polyols having hydroxyl end groups which are chemically modified. Further, the invention relates to a method for controlling gas hydrate formation and plugging of gas hydrate forming fluids and the use of the gas hydrate inhibitors for this purpose.
Claims12
A method for controlling gas hydrate formation and plugging in gas hydrate forming fluids, said method comprising:
- adding a gas hydrate inhibitor comprising hyperbranched polyester polyols to crude oil, condensate, and gas systems containing water;
- wherein the hyperbranched polyester polyols do not contain polyesteramide polyols, and
- wherein the hyperbranched polyester polyols have hydroxyl end groups which are chemically modified with a hydrophilic group and/or a hydrophobic group.
Dependencies are inferred from the claim text.