Ultra-low interfacial tension for EOR (enhanced oil recovery)

An application report on the optimization of flooding mixtures with the help of our Spinning Drop Tensiometer – SITE100

Chemical flooding, an enhanced oil recovery method, requires a very low interfacial tension between oil and water. In the ideal case, this leads to the formation of a micro-emulsion which mobilizes the oil adhering in the reservoir to the best possible extent. Our Spinning Drop Tensiometer – SITE 100 is particularly suitable for optimizing flooding mixtures, as it accurately measures extremely low interfacial tensions down to
10-6 mN/m. In a new application report, we refer to an article from the research literature* on this subject.

In the application report, we first give an overview of enhanced oil recovery methods and explain the function of different additives used in chemical flooding. At the same time, we clarify the direct association between the oil-water interfacial tension and the reservoir yield. The report focuses on the results of the article cited below. The KRÜSS SITE100 instrument enabled the authors to significantly reduce the interfacial tension between oil and flooding mixture. In doing so, the researchers investigated a biosurfactant based on humic acids which, as biological decomposition products, are ecologically harmless and therefore of interest for large-scale technical use.

Download the full application report on this subject: AR273

* J. Zhang, G. Li, F. Yang, N. Xu, H. Fan, T. Yuan, L. Chen, Hydrophobically modified sodium humate surfactant: Ultra-low interfacial tension at the oil/water interface, Appl Surf Sci 2012, 259, 774-779.