西南石油大学学报(自然科学版) ›› 2012, Vol. 34 ›› Issue (4): 110-114.

• 石油与天然气工程 • 上一篇    下一篇

非牛顿高凝油的剪切特性

王致立1,姚传进2,蒋帅3,张晓4,李文忠2   

  1. 1. 中国石化胜利油田鲁明昌邑公司,山东潍坊2613002. 中国石油大学(华东)石油工程学院,山东青岛2665553. 西南石油大学资源与环境学院,四川成都6105004. 中国石化胜利油田现河采油厂,山东东营257068
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-08-01 发布日期:2012-08-01

Shear Properties of Non-Newtonian High-pour-point-oil

Wang Zhili1, Yao Chuanjin2, Jiang Shuai3, Zhang Xiao4, Li Wenzhong2   

  1. 1. Luming Changyi Oil and Gas Exploration and Development Company Ltd.,Shengli Oilfield,SINOPEC,Weifang,Shandong 261300,China2. School of Petroleum Engineering,China University of Petroleum(Huadong),Qingdao,Shandong 266555,China3. School of Resources and Environment Engineering,Southwest Petroleum University,Chengdu,Sichuan 610500,China4. Xianhe Oil Recovery Plant,Shengli Oilfield,SINOPEC,Dongying,Shandong 257068,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2012-08-01 Published:2012-08-01

摘要: 潍北油田高凝油含蜡量高、凝固点高,当温度低于析蜡点时,呈现出非牛顿流体特征,其特性受剪切作用影响
较大。为此,开展了非牛顿高凝油的室内剪切降黏降凝实验。研究表明,在剪切作用下,非牛顿高凝油的黏度大幅降
低;非牛顿高凝油具有剪切稀释性,且温度越低,剪切稀释性越明显;剪切速率对非牛顿高凝油的凝固温度、凝固时间
影响较大,在凝固点附近剪切时,凝固温度可降低56 ℃、凝固时间明显延长;剪切时间对非牛顿高凝油的凝固温度
影响很小,对凝固时间影响较大,在凝固点附近剪切20 min(转速100 r/min),凝固时间可延长817 min。

关键词: 非牛顿流体, 高凝油, 剪切, 凝固温度, 凝固时间

Abstract: The wax content and freezing point of the high-pour-point-oil in Weibei Oilfield are high. When the temperature
is below the wax precipitation point,the high-pour-point-oil behaves as a non-newtonian fluid which is greatly affected by
shear. Thus,the shear viscosity and pour point reduction experiments of non-newtonian high-pour-point-oil were conducted.
The results show that under the shear function,the viscosity of non-newtonian high-pour-point-oil is reduced greatly;the nonnewtonian
high-pour-point-oil presents shear thinning and the lower the temperature is,the more obvious the shear thinning
is;the shearing rate has greater effect on the freezing point and freezing time of non-newtonian high-pour-point-oil;under the
shear function near freezing point,the freezing point can be reduced by 56 ℃ and the freezing time is obviously prolonged;
the shearing time has little impact on the freezing point and has greater influence in freezing time and when it shears about
20 min(the rotational speed is 100 r/min),the freezing time can be prolonged by 817 min.

Key words: non-Newtonian fluid, high-pour-point-oil, shear, freezing point, freezing time

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