西南石油大学学报(自然科学版) ›› 2002, Vol. 24 ›› Issue (5): 57- 60.DOI: 10.3863/j.issn.1000-2634.2002.05.018

• 油气化学工程与化工 • Previous Articles     Next Articles

INFLUENCE OF POUR POINTDEPRESSANTS ON RHEOL2 OGY OF WAXY CRUDE OIL IN SHENGLI OIL FIELD

SONG Zhao-zheng JIANG Qing-zhe ZHANG Gui-cai ZHANG Guo-zhong ZHAO Fu-lin   

  1. University of Petroleum , Changping Beijing 102200 , China
  • Received:2002-02-10 Revised:1900-01-01 Online:2002-10-20 Published:2002-10-20
  • Contact: SONG Zhao zheng

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Abstract: The effects of various factors on rheology and thermal characteristic of treated waxy crude have been investigated. The conclusions have been made as follows : pour point depressants can depress the pour point and abnormal point of crude oil ,broaden the temperature scope of Newtonian liquid of crude oil and lower greatly viscosity of nonONewtonian liquid crude oil.
The influence of reheat and highOspeed shear on pour point depressants mainly depends on their temperature. When the temperature of reheat is more than crude’s abnormal point 10 ℃,reheat has little influence on the pour point depressants. However , when the temperature of reheat is lower than crude’s abnormal point , reheat has deteriorated the effect of pour point depressants. Above abnormal point , highOspeed shear has little
influence on the pour point depressants. When a great deal of
waxy crystals has formed , highOspeed shear deteriorates the effect of the pour point depressants.

Key words: pour point depressant, temperatureOviscosity curve, reheat, highOspeed shear

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