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Fast degradation and viscosity reduction of waxy crude oil and model waxy crude oil using Bacillus subtilis
Published in Elsevier
2015
Volume: 134
   
Pages: 158 - 166
Abstract
Microbial degradation of waxy crude oil provides efficient, economical and environment friendly solution to enhance the waxy crude oil production from mature brownfield crude oil reservoirs, addressing flow assurance challenges during transportation, and on-shore and off-shore oil-spill remedies. This study systematically investigates the utilization of thermophilic Bacillus subtilis for the degradation of waxy crude oil obtained from the oilfield and model crude oil prepared by various higher molecular weight waxes suitable for high temperature applications. The influence of microorganism to improve the flow behavior of waxy crude oil has been analyzed by means of viscosity and compositional degradation. The degradation and reduction in the viscosity of crude oil at various temperatures have been analyzed. More than 95% of degradation has been observed in 15 days for both the crude oil samples at 50. °C. The simple nutrient and microorganism combination and the high activity of enzymes aided to get utmost and faster degradation of the crude oil. This study will be useful to employ the thermophilic bacteria for various oilfield applications. © 2015 Elsevier B.V.
About the journal
JournalData powered by TypesetJournal of Petroleum Science and Engineering
PublisherData powered by TypesetElsevier
ISSN09204105
Open AccessNo
Concepts (25)
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    Bacteria
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    Bacteriology
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    Biodegradation
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    Enzymes
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    High temperature applications
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    OIL FIELDS
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    Oil spills
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    Oil well flooding
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    PETROLEUM RESERVOIR ENGINEERING
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    Petroleum reservoirs
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    Petroleum transportation
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    Viscosity
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    Bacillus subtilis
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    COMPOSITIONAL DEGRADATION
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    Environment friendly
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    Microbial degradation
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    OIL FIELD APPLICATIONS
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    THERMOPHILIC BACILLI
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    THERMOPHILIC BACTERIA
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    WAXY CRUDE OIL
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    Crude oil
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    Enzyme activity
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    Microbial activity
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    OIL FIELD
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    Thermophilic bacterium