Fatemeh jalali nezhad - Department of Polymer Engineering, Amirkabir University of Technology(Tehran polytechnic), 24 Hafez Ave, P.O.Box15875-4413, Tehran, Iran
saeed pourmahdian - Department of Polymer Engineering, Amirkabir University of Technology(Tehran polytechnic), 24 Hafez Ave, P.O.Box15875-4413, Tehran, Iran

Polymer flooding is the best method of enhanced oil recovery in the third stage. Polymer gels shoud have the best ability of conduction, improvement of velocity profiles and delay the fingering phenomenon of water. They increase the viscosity of water and decreasing the mobility ratio. To avoid wasting money, time and energy, before injecting the synthesized hydrogels in to the oil reservoirs, they must be tested in a simulated environment in the laboratory first and then their properties examined. In this project, two groups of hydrogel were injected in to the columns filled with calcium carbonate and after that their residence time diagrams were compared. In the end it was observed that the injection of polyacrylamide is the best choice. Also the effect of concentration and structure on the residence time diagram studied in detail

Hydrogel- residence time- porous packed column- calcium carbonate-oil recovery