FIELD: oil and gas industry.
SUBSTANCE: invention describes depressor additive for paraffin oils and preventing deposits of asphalts, resins that contains ethylene and vinyl acetate copolymer, nonionic surfactant and solvent. It contains block copolymer of ethylene and propylene oxides or oxyethylated alkyl phenol or oxyethylated fatty amine as nonionic surfactant, aromatic solvent as solvent and ethylene glycol monobutyl ether additionally with the following ration of components, wt %: ethylene and vinyl acetate copolymer 5-15, block copolymer of ethylene and propylene oxides or oxyethylated alkyl phenol or oxyethylated fatty amine 5-15, ethylene glycol monobutyl ether 0-2, aromatic solvent - remaining share.
EFFECT: additive has low chilling temperature and prevents effectively deposits of asphalts, resins in regard to water cut oils and oil and gas condensates.
3 tbl
Title | Year | Author | Number |
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RU2184129C1 |
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RU2074217C1 |
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RU2050402C1 |
COMPOSITION FOR DEHYDRATION AND DESALTING OF CRUDE OIL AND FOR INHIBITION OF ASPHALTENE-TAR-PARAFFIN DEPOSITS | 1999 |
|
RU2152976C1 |
GLYCOL-BASE BLOCK-COPOLYMER OF PROPYLENE- AND ETHYLENE OXIDES AS DEMULSIFIER OF AN AQUEOUS-PETROLEUM EMULSION EXHIBITING CAPABILITY TO PREVENT ASPHALTENE-RESIN-PARAFFIN DEPOSITS AND PROTECTION AGAINST CORROSION AND DEMULSIFIER BASED ON THEREOF | 1994 |
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Authors
Dates
2015-08-10—Published
2014-07-23—Filed