Oil is recovered from a reservoir in three different stages namely: the primary, secondary, and tertiary stage. In the primary stage, oil is recovered utilizing the natural reservoir pressure. However, only a small fraction (5-10%) of total oil can be recovered at this stage. In secondary stage, reservoir pressure is increased by injecting water or gas. However, only 20-30% of the total oil can be recovered in the secondary stage. To recover the remaining oil, different techniques such as thermal, gas or chemical enhanced oil recovery (EOR). Chemical EOR is a technique in which different chemicals such as surfactants, polymers, and alkalis are injected to increase the recovery from an oil reservoir. Surfactants decrease the interfacial tension between water and oil that help in displacing the residual trapped oil. Water-soluble polymers are injected to increase the viscosity of displacing fluid (water) that improve the displacement efficiency and decrease the "viscous fingering". Surfactants and polymers are injected together to improve the viscosity and to reduce the interfacial tension simultaneously. Therefore, understandings of surfactant-polymer (SP) interactions are crucial for EOR operation. In this work, interactions between commercial polyacrylamide and in-house synthesized amido amine-based cationic gemini surfactants were assessed using rheological measurements. Increasing the surfactant concentration lowered the viscosity of the polyacrylamide. The SP solution containing longer surfactant tail has lower viscosity compared to the surfactant with a shorter chain. It was observed that spacer nature, rigidity, and length also affects the rheological properties of polyacrylamide. Detail results will be discussed.