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STUDY OF THE COMPOSITION OF CRUDE OIL IN THE PROCESS OF BIODEGRADATION.

Sergey Petrov, D.A. Ibragimova, I.A. Ivanova, A.F. Ruleva

First published: 2017-11-20https://doi.org/10.5593/sgem2017h/15/s06.062View metrics

Abstract

The current problem of the last decade in the world is the increase of oil production volume due to the extraction of its hard-to-recover reserves. The difficulty of its extraction is determined not only by the petro-physical characteristics of the oil-bearing formation, but also by the physico-chemical properties of the fluid itself. However, not all methods of enhancing oil recovery are ecologically safe. The most effective and ecologically-friendly method of soil purification from pollution by oil products is the biological method, or biodegradation. The main advantage of biodegradation is the use of hydrocarbon-processing microorganisms. Therefore, the study of this method and the composition of crude oil after biodegradation have a great importance. The objects of this study were bitumen crude oil of Ashalchinskoe field, carbonate rock and bacteria Bacillus. In the course of the study, microbiological culture -bacteria Bacillus showing activity in biodegradable processes of hydrocarbon components of bituminous high-viscosity oil was used. The series of experiments of microbiological exposure on crude oil was performed in a laboratory batch reactor. The optimum technological parameters of biological degradation of crude oil, which ensure a decrease in density and an increase in the yield of light fractions, are determined. The crude oil and biodegradated oil analysis were studied by the use of following instrumental methods of analysis: GL chromatography, rheology, chromatography-mass spectrometry. Elemental analysis was used to study the minerals of the carbonate rock. A comparative analysis of the initial oil and the converted oil as a result of the microbiological effect is carried out. The peculiarities of the composition changes of heavy crude oil in the course of the microbiological action, depending on the temperature, pressure of the process and on the presence of bacteria, are revealed.

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Publication details

Title
STUDY OF THE COMPOSITION OF CRUDE OIL IN THE PROCESS OF BIODEGRADATION.
Authors
Sergey Petrov, D.A. Ibragimova, I.A. Ivanova, A.F. Ruleva
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Science and Technologies in Geology, Exploration and Mining
Publisher
STEF92 Technology
Year
2017
Pages
493-500
SWS Citekey
Petrov20176493500
ISSN
1314-2704
ISBN
978-619-7408-26-3
Language
en
Publication type
Conference Paper
Keywords
heavy crude oilbiodegradationbacteriaanalysiscomposition
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