| 摘要 |
An additive comprising, dissolved in a solvent, an asphaltene dispersant selected from the group consisting ofα-olefin/vinyl pyrrolidinone copolymers. The copolymer can comprise at least oneα-olefin selected from the group consisting of mono-α-olefins, at least oneα-olefin selected from the group consisting of linearα-olefins and/or at least oneα-olefin is selected from the group consisting of 1-hexadecene, 1-octadecene, 1-eicosene, 1-docosene, 1-tetracosene, 1-hexacosene, 1-octacosene and 1-triacontene. The additive can comprise a copolymer of 2-pyrrolidinone, 1-ethenyl monomer. The copolymer can have a Hansen Solubility Parameter (HSP),δ, of greater than 16, 17 or 18 MPa1/2. The solvent can be selected from the group consisting of aromatic solvents, such as 1-methyl naphthalene, bis-(m-phenoxyphenyl)ether, o-xylene, toluene and heavy aromatic solvents. Also provided is a method of inhibiting asphaltene precipitation in a fluid by introducing into the fluid an asphaltene dispersant selected from the group consisting ofα-olefin/vinyl pyrrolidinone copolymers.
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