An Analytical Model for Brine-Induced Oil Recovery |
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Authors: | A. L. Ogunberu M. Ayub |
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Affiliation: | a Nexen Inc., Calgary, Alberta, Canadab EXPEC Advanced Research Center, Saudi Aramco, Dhahran, Saudi Arabia |
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Abstract: | An analytical model for field application of improved waterflooding through brine concentration is presented. Based on several laboratory studies, many researchers suggested that changing the brine concentration during waterflooding offered viable options for improved oil recovery. In this regard, particularly in cyclic waterflooding, these studies have confirmed the effectiveness of such an approach. Generally, however, they are limited to laboratory studies without much field application. Most laboratory results do not present a clearly defined approach for practical application. This article analyses laboratory results and proffers a concise approach for field application. To this end, based on the reinterpretation of the Civan and Knapp model, an oil recovery model is developed for cyclic waterflooding. This model monitors waterflood performance based on the impact of brine injection for increased oil recovery. |
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Keywords: | brine concentration improved waterflooding oil recovery permeability reduction |
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