Paper Information

Journal:   JOURNAL OF SCIENCE (UNIVERSITY OF TEHRAN) (JSUT)   SUMMER 2007 , Volume 33 , Number 2 (SECTION: CHEMISTRY); Page(s) 25 To 32.
 
Paper: 

VISUALIZATION OF POLYMER FLOODING IN HETEROGENEOUS SYSTEM USING GLASS MICROMODELS

 
 
Author(s):  HESHMATI MOHAMMAD, MAHDAVI HOSSEIN*, HAGHIGHI MANOUCHEHR, TORABI MAHMOUD
 
* SCHOOL OF CHEMISTRY, UNIVERSITY COLLEGE OF SCIENCE, UNIVERSITY OF TEHRAN, TEHRAN, IRAN
 
Abstract: 

Addition of polymer to the water injected into the reservoir is one of the enhanced oil recovery methods. In addition to increasing the water viscosity, polymers can also precipitate and adsorb on the porous media surface that causes an increase in recovery of oil. It is imagined that using polymer solutions in high permeable reservoirs is not effective. In this paper, the effective parameters in polymer are investigated using glass micromodels. This micromodel has two different permeability layers. This difference in permeability provides visualizing and measuring tools for understanding the difference in behavior of water and polymer solutions. An aqueous solution of hydrolyzed polyacrylamide is used as the polymer flooding fluid. The results show that oil recovery will increase with increasing the injected fluid viscosity. Sometime this increase is to about 17% of original oil in place. The results also show that with considering economical aspects, polymer flooding can be performed in a water flooded reservoir.  Investigation of oil recovery in heterogeneous models shows that, the difference in oil recovery of water-flooding and polymer flooding is between 1% and 17% of the original oil in place.

 
Keyword(s): MICROMODEL, POLYMER, HETEROGENEITY, ULTIMATE RECOVERY, VISCOSITY
 
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