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Gewählte Master / Diploma Thesis:

Ulrich Kindler (2016): Verfahrenstechnische Optimierung eines Enhanced-Oil-Recovery Flutprozesses unter besonderer Berücksichtigung der Mikrobiologie.
Master / Diploma Thesis - Institut für Biotechnologie, BOKU-Universität für Bodenkultur, pp 106. UB BOKU obvsg

Data Source: ZID Abstracts
In the course of an Enhanced-Oil-Recovery flooding process implementation, using hydrolyzed polyacrylamide HPAM, system operation difficulties in regard to the injection process were observed. Preliminary analysis suggested it could be related with the water microbiological activity and its impact on the polymer chains. It was assumed that microbial growth occurs when microbes form a biofilm in the oil reservoir, pipelines and surface facilities, leading to difficulties in the Plant operation. Potentially, polymer degradation happens and negatively influences the flood process effectiveness. The main objectives of this research were, first, to understand the microbiological mechanisms occurring in the Polymer Flooding Process. And second, to provide an overview of the present microbiological phenomena. Furthermore, to identify potentialities for the flooding process improvement, increasing the effectiveness of the polymer flood process and reducing the influence of microbiological activity on the polymer. In order to understand the problem of the polyacrylamide microbial interactions the research began with the evaluation of up-to-date references. This formed the basis for further analysis and evaluation of systems and handling equipment. The executed microbiological and molecular biological studies as well as the effects of a test-basis biocide dosage studies were comprehensive reviewed. The pre-filter, the pumping system, the maturating tanks and the effect of the flow behavior were examined as well. The use of biocide is always associated with high costs. Therefore the proposed improvements were focused on polymer solution preparation and polymer solution injection to reduce the microbial count. These recommended measures will not only improve the physical characteristics of the flooding process but also the microbiological.

Beurteilende(r): Holubar Peter
1.Mitwirkender: Fürhacker Maria

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