Process for conveying hydrates dispersed in production effluents

摘要

The addition of an amphiphilic non-ionic product, formed by the reaction between a polymerized unsaturated oil and an aminoalcohol enables the transport of suspended hydrates in fluids comprising water, gas and liquid hydrocarbons and inhibits agglomeration of the hydrates. The concentration of the incorporated additive is 0.1-5%, preferably 0.1-2%, relative to the water present. The fluid may comprise the hydrocarbons methane, ethane, ethylene, propane, propene and n-butane, possibly H2S and/or CO2, natural gas, petroleum gas and at least one liquid hydrocarbon. An Independent claim is also included for the preparation of the additive, by the reaction between a polymerized flax oil of viscosity (20 degrees C.) 5-60Pa.s. and diethanolamine. After the reaction, the product is conditioned in an aromatic solvent or one derived from an oil , vegetable or animal grease (preferably a methyl ester of colza oil) to give a mixture containing 20-80%, preferably 30-0%, of solvent.