2004
DOI: 10.1590/s0104-14282004000400016
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Avaliação de aditivos poliméricos à base de éster fosfórico como modificadores da cristalização de parafina

Abstract: IntroduçãoAs companhias de petróleo têm intensificado a exploração offshore, onde os campos são localizados abaixo do fundo do mar. Neste caso, a baixa temperatura da água provoca um resfriamento brusco do óleo, ocasionando deposição de parafinas. O fenômeno de cristalização de parafina pode ser dividido em três estágios: a nucleação, onde o primeiro núcleo aparece; o segundo estágio, onde a massa produzida sai de solução; e o terceiro, onde ocorre a agregação dos cristais produzidos dando origem a cristais ma… Show more

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Cited by 7 publications
(2 citation statements)
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“…Various polymers have been used and/or proposed in the literature to inhibit the deposition of waxes . Among these are poly(ethylene‐co‐vinyl acetate) (EVA) and acrylate copolymers with long hydrocarbon chains.…”
Section: Introductionmentioning
confidence: 99%
“…Various polymers have been used and/or proposed in the literature to inhibit the deposition of waxes . Among these are poly(ethylene‐co‐vinyl acetate) (EVA) and acrylate copolymers with long hydrocarbon chains.…”
Section: Introductionmentioning
confidence: 99%
“…Amphiphilic polymers have widespread applications. In the petroleum industry, they are used in drilling fluids and for demulsification of water‐in‐oil emulsions, inhibition of wax deposition, stabilization of asphaltenes in crude oil, flocculation of asphaltenes, inhibition of naphthenate deposition, enhanced oil recovery, and water treatment . In drilling, hydrophobically modified starches can be used to control filtrate from emulsified fluids .…”
Section: Introductionmentioning
confidence: 99%