西南石油大学学报(自然科学版) ›› 2010, Vol. 32 ›› Issue (2): 145-148.DOI: 10.3863/j.issn.1674-

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

STUDY ON THE UPGRADING AND VISCOSITY-REDUCING MECHANISM OF ULTRA-HEAVY OIL

WU Chuan1，2 CHEN Yan-Ling2 WANG Yuan-Qing2 YANG Chao2

  

  1. 1.College of Petroleum Engineering，China University of Petroleum （East China），Dongying Shandong 257061，China；2.College of Material Science and Chemistry Engineering，China University of Geosciences （Wuhan），WuhanHubei 430074，China
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-04-20 Published:2010-04-20

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Abstract:

Upgrading and viscosity reduction mechanism are studied to the Shengli and Henan ultra-heavy oil in this paper.It′s shown that the physical and chemical properties of water are suitable for aquathermolysis at high temperature.The function of catalyst not only breaks C-S bond，but also breaks C-O and C-N bonds and accelerates the reaction of quathermolysis.The synergism between catalyst and hydrogen donor for the viscosity reduction of ultra-heavy oil，there is H produced in the process of aquathermolysis，and thus the down-hole hydrogenation of heavy oil and upgrading of ultra-heavy oil may take place.The amount of saturate and aromatic hydrocarbon increases，the decrease resin and asphaltene may reduce the viscosity of heavy oil.The percentage of resin，asphalt and S，O，N decrease，and H/C increases after the upgrading process.

Key words: ultra-heavy oil, aquathermolysis, upgrading, viscosity-reducing mechanism, catalyst and cracking

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