JOURNALS/BOOKS
The catalytic aquathermolysis of heavy oil in the presence of a hydrogen donor under reservoirs conditions 2233-2240 F. Zhao, X. Wang, Y. Wang, Y. Shi

Energy Education Science and Technology Part A: Energy Science and Research

2014  Volume (issues) 32(4): 2233-2240

 

  

The catalytic aquathermolysis

of heavy oil in the presence of a

hydrogen donor under reservoirs conditions

 

Fajun Zhao*, Xiao Wang, Yunlong Wang, Yansong Shi

 

Northeast Petroleum University, Key Laboratory of Oil Recovery Enhance of Ministry of Education,

Daqing 163318, China

 

  

Received: 06 Febuary 2014; accepted: 09 April 2014

Abstract

 

Under the condition of high pressure reactor simulating oil reservoirs thermal recovery, with the catalyst of self-made organic oil-soluble salt, with the hydrogen donor of formic acid, the study of catalytic aquathermolysis of heavy oil has been carried out. The effects of adding hydrogen donor on the viscosity, group composition and sulfur content of heavy oil have been investigated and the thermal conversion behavior of the asphaltene of heavy oil have been analyzed by the method of TG-DTA analysis before and after the catalytic aquathermolysis reaction. It turns out that, with the increase of the mass fraction of hydrogen donor, the viscosity reduction ratio, the contents of saturated hydrocarbons and aromatic hydrocarbons are going up while the contents of resin and asphaltenes are reducing after the hydrogen donor catalytic aquathermolysis reaction. Then under the combined effect of catalysts and hydrogen donor, the amount of carbon and sulfur dropped, the amount of hydrogen increased, so the proportion of H/C atomic number becomes higher.According to the TG-DTA curve of asphaltenes in the heavy oil, the weight loss of asphaltenes in the heavy oil after the hydrogen donor catalytic aquathermolysis reaction is higher than that of before the reaction, which means the stability of the asphaltene in heavy oil has been weakened after the hydrogen donor catalytic aquathermolysis reaction.

 

Keywords: Aquathermolysis; Hydrogen donor; Catalytic; Asphaltene; Pyrolysis