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US 12,180,417 B2Granted
Composition that can be used to delay the formation of gas hydrates
AssigneeArkema France
InventorsGilles Barreto, Henry Delroisse
Life of this patent
Estimating the term…
Abstract
The present invention relates to a composition comprising: at least one co-polymer of which at least one of the repeating units comprises at least one amide function; and at least one polyether having a molecular weight (MW) greater than 60 g·mol−1. The invention also relates to the use of said composition for delaying, or even preventing, the formation of gas hydrates, in particular in a method for extracting oil and/or gas and/or condensates, as well as to the method for delaying, or even preventing, the formation and/or agglomeration of gas hydrates, using a composition as defined above.
Claims10
A composition comprising:
- a) between 5% and 40% by weight with respect to the total weight of the composition of at least one copolymer obtained by polymerization of vinylpyrrolidone (VP) and vinylcaprolactam (VCap);
- b) between 1% and 30% by weight, with respect to the total weight of the composition of at least one polyether with a weight-average molecular weight (Mw) of greater than 260 g.mol−1 that is chosen from among polyoxymethylene glycol, polymethylene glycol, polyethylene glycol, polypropylene glycol, polybutylè ne glycol, trimethylolpropane triglycidyl ether, neopentyl glycol diglycidyl ether, poly (ethylene glycol) glycidyl ether, poly (propylene glycol) glycidyl ether, poly (ethylene glycol) diglycidyl ether, poly (propylene glycol) diglycidyl ether, poly (ethylene glycol) triglycidyl ether, poly (propylene glycol) triglycidyl ether, poly (ethylene glycol) tetraglycidyl ether, poly (propylene glycol) tetraglycidyl ether, glycerol propoxylate triglycidyl ether, poly (ethylene glycol) methyl ether, poly (ethylene glycol) methyl ether acetate, polyethylene glycol dimethyl ether, le trimethylolpropane ethoxylate, methoxypolyethylene glycol, glycerolèthoxylate, 4-nonylphenyl-polyethylene glycol, glycerol propoxylate, pentaerythritol triacrylate, pentaerythritol propoxylate, and pentaerythritol butoxylate, and
- c) optionally at least one organic solvent.
Dependencies are inferred from the claim text.