Mechanism of Underground Heavy Oil Catalytic Aquathermolysis

Field tests carried out in Shengli oi lfield showed that underground catalytic aquathermolysis can reduce heavy oil viscosity by about 70-80% with a long-term effect, contributing greatly to oil production increase. Experimental results proved that average molecular weight and contents of heavy comp...

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Bibliographic Details
Published in:Chemistry and technology of fuels and oils 2018, Vol.53 (6), p.913-921
Main Authors: Xu, H., Pu, C.
Format: Article
Language:English
Subjects:
Catalysis
Chemistry
Chemistry and Materials Science
Field tests
Geotechnical Engineering & Applied Earth Sciences
Industrial Chemistry/Chemical Engineering
Mineral Resources
Petroleum industry
Petroleum mining
Petroleum production
Production increases
Ring opening
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Summary:Field tests carried out in Shengli oi lfield showed that underground catalytic aquathermolysis can reduce heavy oil viscosity by about 70-80% with a long-term effect, contributing greatly to oil production increase. Experimental results proved that average molecular weight and contents of heavy components and heteroatoms of heavy oil decrease after the treatment and that H/C ratio and the content of light fractions increase due to reactions, such as hydrogenation, ring opening, desulfurization, etc. initiated by the catalyst, high-temperature water, and reservoir minerals. The study results suggest that in-situ catalytic aquathermolysis of heavy oil is technically feasible.
ISSN:0009-3092
1573-8310
DOI:10.1007/s10553-018-0881-3