Isolation and screening of Bacillus subtilis MJ01 for MEOR application: biosurfactant characterization, production optimization and wetting effect on carbonate surfaces
| Autor: | Ali Niazi, Shahab Ayatollahi, Ehsan Ganji Azad, Moein Jahanbani Veshareh, Tahereh Deihimi |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
02 engineering and technology
Bacillus subtilis 01 natural sciences lcsh:Petrology chemistry.chemical_compound 020401 chemical engineering 0103 physical sciences Response surface methodology 0204 chemical engineering lcsh:Petroleum refining. Petroleum products 010304 chemical physics biology Microbial enhanced oil recovery Box–Behnken design lcsh:QE420-499 Wettability alteration Geotechnical Engineering and Engineering Geology biology.organism_classification General Energy chemistry Chemical engineering Distilled water Critical micelle concentration lcsh:TP690-692.5 Seawater Industrial and production engineering Surfactin |
| Zdroj: | Journal of Petroleum Exploration and Production Technology, Vol 9, Iss 1, Pp 233-245 (2018) Jahanbani Veshareh, M, Ganji Azad, E, Deihimi, T, Niazi, A & Ayatollahi, S 2019, ' Isolation and screening of Bacillus subtilis MJ01 for MEOR application: biosurfactant characterization, production optimization and wetting effect on carbonate surfaces ', Journal of Petroleum Exploration and Production Technology, vol. 9, no. 1, pp. 233-245 . https://doi.org/10.1007/s13202-018-0457-0 |
| ISSN: | 2190-0566 2190-0558 |
| DOI: | 10.1007/s13202-018-0457-0 |
| Popis: | The bacterial strain MJ01 was isolated from stock tank water of one of the Iranian south oil field production facilities. The 16S rRNA gene of isolate, MJ01, showed 99% similarity to Bacillus subtilis. The results revealed that biosurfactant produced by this strain was lipopeptide-like surfactin based on FTIR analysis. Critical micelle concentration of produced surfactin in distilled water was 0.06 g/l. Wettability study showed that at zero salinity surfactin can change original oil-wet state to water-wet state, but in seawater salinity it cannot modify the wettability significantly. To utilize this biosurfactant in ex situ MEOR process, economical and reservoir engineering technical parameters were considered to introduce a new optimization strategy using the response surface methodology. Comparing the result of this optimization strategy with the previous optimization research works was shown that significant save in use of nutrients is possible by using this medium. Furthermore, using this method leads to less formation damage due to the incompatibility of injecting fluid and formation brine, and less formation damage due to the bioplugging. |
| Databáze: | OpenAIRE |
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