Study on the New Determined Method of Profile Inversion of Polymer Flooding

Abstract:

Inversion happened in reservoir water injection profile is a bad phenomenon for enhance oil recovery, understanding the mechanism of profile inversion could provide theoretical basis for administer profile inversion. The calculation method of dynamic R_F was deduced by Darcy's law, and indoor core physical simulation experiment in parallel at the same time. The results show that profile inversion lies on the different patterns of dynamic R_F of polymer solution in the high and low permeable core. In the low permeable core, R_F rises in the index form, while R_F rises in the logarithm form in the high permeable core. In the low permeable core, the changing rate of R_F continuously increases, while the changing rate of R_F decreases constantly in the high permeable core. When those are equal, the water injection profile begins to invert. In this paper, a new method to predict profile inversion was sought out.

• Periodical: Applied Mechanics and Materials (Volumes 501-504)
• Pages: 2085-2088
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.501-504.2085
• Online since: January 2014
• Authors: Sheng Jian Shu, Jin Gang He, Jing Yang, Wei Nan Wang, Xiu Long Dong
• Keywords: Changing Rate of Resistance Coefficient, Inversion Opportunity, Polymer Flooding, Profile Inversion, Resistance Coefficient

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