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Influence of pore radi distribution on polymer retention in natural sandstones
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, IOR 1991 - 6th European Symposium on Improved Oil Recovery, May 1991, cp-44-00042
- ISBN: 978-94-6282-133-0
Abstract
In polymer flooding processes for enhancing oil recovery, polymer retention is a major economic factor which limits the applicability of this technique. Polymer retention occurs mainly by the following two mechanisms: - adsorption of polymer molecules on the surface of accessible pores, and - mechanical entrapment in small pores in a manner similar to the process of deep bed filtration.