Dynamic rheological analysis of the gelation behaviour of waxy crude oils

被引：0
|
作者：
José A. Lopes da Silva
João A. P. Coutinho
机构：
[1] University of Aveiro,Department of Chemistry
[2] University of Aveiro,CICECO, Department of Chemistry
来源：
Rheologica Acta | 2004年 / 43卷
关键词：
Waxy crude oils; Viscoelastic behaviour; Gelation; Fractal aggregates;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this work we have characterised the viscoelastic behaviour of paraffin crystals in three different complex crude oils, close to the gelation threshold and after curing the gels under quiescent isothermal conditions, by means of oscillatory shear measurements. An increase in gelation temperature is observed with increasing oil’s molecular weight. The interactions between wax crystals and the formation of the space-filling network of interlocking wax crystals are thus facilitated by the presence of paraffins with higher molecular weight. The apparent gelation time, obtained from isothermal curing experiments, decreases as the curing temperature was decreased, and it is highly temperature-dependent.
引用
收藏
页码：433 / 441
页数：8
相关论文
共 50 条
  • [1] Dynamic rheological analysis of the gelation behaviour of waxy crude oils
    da Silva, JAL
    Coutinho, JAP
    RHEOLOGICA ACTA, 2004, 43 (05) : 433 - 441
  • [2] Gelation of waxy crude oils by ultrasonic and dynamic mechanical analysis
    Francesca Lionetto
    Giacomo Coluccia
    Paolo D’Antona
    Alfonso Maffezzoli
    Rheologica Acta, 2007, 46 : 601 - 609
  • [3] Gelation of waxy crude oils by ultrasonic and dynamic mechanical analysis
    Lionetto, Francesca
    Coluccia, Giacomo
    D'Antona, Paolo
    Maffezzoli, Alfonso
    RHEOLOGICA ACTA, 2007, 46 (05) : 601 - 609
  • [4] Rheological behaviour of gelled, waxy North Sea crude oils
    Ronningsen, Hans Petter
    JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING, 1992, 7 (3-4) : 177 - 213
  • [5] Rheological Characterization of Waxy Crude Oils: Sample Preparation
    Marchesini, Flavio H.
    Alicke, Alexandra A.
    de Souza Mendes, Paulo R.
    Ziglio, Claudio M.
    ENERGY & FUELS, 2012, 26 (05) : 2566 - 2577
  • [6] Delineating the pour point and gelation temperature of waxy crude oils
    Venkatesan, R
    Singh, P
    Fogler, HS
    SPE JOURNAL, 2002, 7 (04): : 349 - 352
  • [7] Crystallisation and gelation of waxy crude oils under flowing conditions
    Lorge, O
    Djabourov, M
    Brucy, F
    REVUE DE L INSTITUT FRANCAIS DU PETROLE, 1997, 52 (02): : 235 - 239
  • [8] Influence of the initial cooling temperature on the gelation and yield stress of waxy crude oils
    Andrade, Diogo E. V.
    da Cruz, Ana C. B.
    Franco, Admilson T.
    Negrao, Cezar O. R.
    RHEOLOGICA ACTA, 2015, 54 (02) : 149 - 157
  • [9] Influence of the initial cooling temperature on the gelation and yield stress of waxy crude oils
    Diogo E. V. Andrade
    Ana C. B. da Cruz
    Admilson T. Franco
    Cezar O. R. Negrão
    Rheologica Acta, 2015, 54 : 149 - 157
  • [10] Experimental simulation of effect of shear on rheological properties of beneficiated waxy crude oils
    Jin-jun Zhang
    Fan Zhang
    Qi-yu Huang
    Da-fan Yan
    Journal of Central South University of Technology, 2007, 14 : 108 - 111
12345