Investigation of Pore-Scale dispersion in Polymer Flooding

Local displacement in polymer flooding is significantly affected by mixing taking place in the medium. Despite decades of<br>research on mixing and dispersion, there remain questions about the amount of mixing occurring at pore-scale, especially for<br>non Newtonian fluid. This study has investigated the local mixing experimentally as well as computationally.<br>Tracer dispersion in Newtonian and shear-thinning fluids flowing through sand pack has been carried out experimentally<br>using classical transmission dispersion. Transmission dispersion increases markedly with the shear thinning index of the fluid<br>at all Peclet numbers.