improvement of thermal stability of polyacryl amide solution used as a nano-fluid in enhanced oil recovery process by nanoclay

research in nanotechnology in the petroleum industry is advancing rapidly and an enormous progress in the application of nanotechnology in this area is to be expected. in particular, adding nanoparticles to fluids may drastically benefit enhanced oil recovery and improve well drilling, by changing the properties of the fluid, rocks wettability alteration, advanced drag reduction, strengthening the sand consolidation, reducing the interfacial tension and increasing the mobility of the capillary trapped oil. in this study, we focus on roles of clay nano-particles on viscosity of polymer, temperature and salinity of polymer solutions different nanoparticles. the viscosity of these polymer solutions was measured using a rheometer and in each measurement, the shear rate was changed, and the effect of this change on the viscosity was measured. results showed that increasing temperature on the viscosity of solution plays a positive role when the dispersed clay nanoparticles are present in the solution.