Laboratory Experiment Research and Field Tests on Catalyst of Aquathermolysis of Heavy Oils

Abstract:

Aquathermolysis reaction of heavy oils occurring in high temperature water environment significantly degrades the heavy components of heavy oils, improves oil quality and reduces its viscosity. Aerosol, oil-soluble, and water-soluble nickel catalysts obviously and effectively catalyze the aquathermolysis reaction of heavy oils in a high temperature and reduces its viscosity, producing a gas increase of 49%, 41% and 21% respectively compared with the result with the absence of any catalyst. An aerosol, oil-soluble and water-soluble nickel catalyst compound (best quality ratio 1:1:2) increases the oil recovery of heavy oils by 8.5% and decreases the viscosity of sample oil and average relative molecular mass of porous media by 89.6% and 23% respectively, with its resin and asphaltene content significantly reduced. The pilot field tests show that, the test cycle production of heavy oils of each well proves an increase of 81.2 ~ 226.1t (not considering the cycle decline rate) over the previous one, which means that the field tests coincide with the laboratory experiments.

• Periodical: Advanced Materials Research (Volume 773)
• Pages: 298-303
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.773.298
• Online since: September 2013
• Authors: Long Dong, Yong Jian Liu, Ke Ming Xu, Fa Jun Zhao, Wei Wei Liu, Xiang Wei Kong
• Keywords: Aquathermolysis, Heavy Oil, Nickel Catalyst, Oil Recovery

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