Due to the naturally low viscosity of liquid CO2 (0.1-1.0 cP pressure/temperature dependent) the CO2 is prone to ¿fingering¿, limiting the efficiency of CO2-EOR [1]. In order to overcome these disadvantages, there is a great deal of interest in developing systems to enhance CO2 viscosity, the proposal addresses this issue with a new approach. The idea is to generate rod-like micelles in model systems, using mixtures of commercially viable CO2 philic surfactants (TC14, Figure 3) and hydrotropes (Figure 1). The understanding gained in liquid oil systems, can then be applied in the more experimentally challenging high pressure environment of supercritical CO2. We have found that heptane can serve as an adequate proxy medium for supercritical CO2 [4], so that studies under ambient conditions in heptane give a good indication of how the systems will behave once in supercritical CO2.