Composition that can be used to delay the formation of gas hydrates

A process for preventing, limiting or delaying formation and/or agglomeration of gas hydrates, comprising adding a composition to a mixture capable of forming the gas hydrates, the composition comprising:

• a) between 10% and 30% by weight with respect to the total weight of the composition of at least one copolymer obtained by polymerization of vinyl acetate and vinylcaprolactam,
• b) between 5% and 20% 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 polyoxymethylene glycol, polymethylene glycol, polyethylene glycol, polypropylene glycol, polybutylène 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, trimethylolpropane ethoxylate, methoxypolyethylene glycol, glycerol éthoxylate, 4-nonylphenyl-polyethylene glycol, glycerol propoxylate, pentaerythritol triacrylate, pentaerythritol propoxylate or pentaerythritol butoxylate, and
• c) optionally at least one organic solvent,
• wherein the composition is added in an amount between 0.2% and 4% by weight, with respect to the total weight of an aqueous phase of the mixture capable of forming hydrates.