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Applications of petroleum geochemistry in reservoirs

Slaveski Angelina

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Summary

This thesis is structured in two main parts-theoretical and practical part. The theoretical part will be mainly focused on the detailed description of the application of geochemistry in oil production and exploration, through explaining the role of geochemistry in the hydrocarbon asset management, in identifying new exploration or missed pay zones, in delineating reservoir compartmentalization by explaining the fingerprinting approach in assessing the reservoir continuity, etc. Additionally, it will be presented how the geochemistry aids in maximizing the waterflood efficiency, as well as its importance in the prediction of the flow assurance problems. In this part, the application of the reservoir geochemistry will be also discussed together with the application of the geochemistry studies in the maturity assessment, oil-oil, oil-source rock correlation. Furthermore, related to the application of the light hydrocarbons, which is the main focus in the practical part, will be discussed the postgenerative alteration processes and its characterization through the application of the light hydrocarbons. In the practical part, a set of light hydrocarbon ratios will be applied on 146 sample set of oils from Western Canada. Using the compositional data of these oil samples, the compositional changes in the samples caused by the postgenerative processes will be detaily observed.

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