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Immiscible Water Alternating CO2 Displacement Efficiency in Layered Water Wet Porous Media
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 82nd EAGE Annual Conference & Exhibition, Oct 2021, Volume 2021, p.1 - 5
Abstract
Summary
In this work, a laboratory test to investigate the influence of permeability heterogeneity and ensuing crossflow on the recovery performance of immiscible water alternating CO2 injection was performed. The results reveal the negative impact of heterogeneity in the vertical direction on ultimate oil recovery from layered cores. Contrary to our previous conclusions about continuous immiscible CO2 flooding, it possible to observe that the crossflow to negatively affect the RF of immiscible WAG in layered samples. This contradiction may suggest that WAG flooding would achieve a stable frontal advance in each layer in non-communication layers.
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