Journal article 1153 views 337 downloads
New insights into the interactions between asphaltene and a low surface energy anionic surfactant under low and high brine salinity
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Daniel Jones,
Shirin Alexander ,
Andrew Barron
Journal of Colloid and Interface Science, Volume: 571, Pages: 307 - 317
Swansea University Authors:
Sajad Kiani , Daniel Jones, Shirin Alexander , Andrew Barron
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DOI (Published version): 10.1016/j.jcis.2020.03.018
Abstract
Hypothesis: The hyperbranched chains on the tail of low surface energy surfactants (LSES) causes lowering of surface free energy and rock wettability alteration, offering significant improvement in oil recovery in asphaltene oil reservoirs.Experiments: Oil sweep efficiency was determined by fluid di...
| Published in: | Journal of Colloid and Interface Science |
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| ISSN: | 0021-9797 1095-7103 |
| Published: |
Elsevier BV
2020
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| Online Access: |
Check full text
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa53811 |
| Abstract: |
Hypothesis: The hyperbranched chains on the tail of low surface energy surfactants (LSES) causes lowering of surface free energy and rock wettability alteration, offering significant improvement in oil recovery in asphaltene oil reservoirs.Experiments: Oil sweep efficiency was determined by fluid displacement in pure brine and LSES-brine solutions in a microfluidic pattern that was representative of a sandstone cross-section. Interfacial tension (IFT), wettability alteration, and Raman and X-ray photoelectron spectroscopy (XPS) were used to measure the changes of asphaltene interactions with oil-aged substrate after surface treating with brine and surfactant-brine solutions.Findings: The hyperbranched LSES yielded a significant increase in the original-oil-in-place (OOIP) recovery (58%) relative to brine flooding (25%), even in the presence of asphaltene. Raman spectra showed the LSES-brine solutions to be capable of causing change to the asphaltene aggregate size after centrifugation treatment. |
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| Keywords: |
Hyperbranched surfactants; Wettability alteration; Asphaltene; Enhanced oil recovery |
| College: |
Faculty of Science and Engineering |
| Funders: |
Financial support was provided by the Welsh Government Sêr Cymru Programme through Sêr Cymru II Welsh Fellowship part funded by the European Regional Development Fund (ERDF), the Sêr Cymru Chair for Low Carbon Energy and Environment, the Sêr Cymru National Research Network in Advanced Engineering and Materials (NRN-141), and the Flexible Integrated Energy Systems (FLEXIS) operations funded by the Welsh European Funding Office (WEFO) through the Welsh Government. The authors declare no competing financial interest. |
| Start Page: |
307 |
| End Page: |
317 |