Project Final Report-10123-03-The objective of the proposed work in this project is to further develop polymeric surfactant (PS) technology as an alternative chemical EOR approach. This breakthrough technology that uses a single component instead of multiple components as in traditional Surfactant Polymer (SP) flooding has the potential of saving millions of dollars for mature field tertiary oil recovery operations. The typical oilfield reservoir conditions from the Illinois Basin will be used to test and evaluate the developing PS-EOR potential for this important mature oil field region.