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AssigneesVersalis S.P.A., ENI S.p.A.
InventorsPaolo Mariani, Michela Agnoli, Alessandro Casalini, Massimo Merlini
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A polymeric composition suitable for lowering the Pour Point of paraffinic crude oils comprising a synergic mixture including at least two ethylene-vinyl acetate copolymers respectively having an average molecular weight Mw lower than 130,000 Dalton (measured via GPC), a content of vinyl acetate monomer ranging from 15 to 50% by weight, with the proviso that the content of vinyl acetate monomer in the respective copolymers differs from one copolymer to another, by over 5%, on a weight basis.
A polymeric composition suitable for lowering the Pour Point of paraffinic crude oils comprising a synergic mixture comprising at least two ethylene-vinyl acetate (EVA) copolymers having an average molecular weight Mw ranging from 25,000 to 100,000 Dalton (measured via GPC), a content of vinyl acetate (VA) monomer ranging from 15 to 50% by weight, respectively, with the proviso that the content of vinyl acetate monomer in the respective at least two ethylene-vinyl acetate copolymers differs from one another by a value higher than 5% on a weight basis,
A process for the lowering the Pour Point of a paraffinic crude oil having a paraffin content higher than 5% by weight, which comprises adding, to the paraffinic crude oil, from 50 to 1,500 ppm (by weight), with respect to the crude oil, a synergic mixture comprising at least two ethylene-vinyl acetate copolymers respectively having an average molecular weight MW ranging from 25,000 to 100,000 Dalton (measured via GPC), a content of vinyl acetate monomer ranging from 15 to 50% by weight, with the proviso that the content of vinyl acetate monomer in the respective at least two ethylene-vinyl acetate copolymers differs by a value higher than 5% on a weight basis,
A paraffinic crude oil having a Pour Point lower than 10° C. comprising:
Dependencies are inferred from the claim text.