Experimental Study of Oil Recovery by Water Alternating Gas (WAG) process in Microporous media

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Water alternating gas injection process (WAG) is a tertiary oil recovery technique commonly used to enhance the displacement efficiency of the residual oil which cannot be recovered during the primary and secondary recovery processes. In this study, experimental tests were conducted in a transparent water wet microporous model packed with glass beads and initially filled with crude oil. Alternate cycles of gas and water were injected to characterize the dynamics of three-phase flows and its associated oil recovery. The displacement of the residual oil at the end of each WAG injection cycles were studied in detail using the state of the art image processing techniques. It was observed that, the continuous cycles of WAG injection have helped the saturated residual oil to spread across the porous region and effectively displaced the residual oil that remained inside the water wet porous media after the initial water flooding. Obtained experimental results helps to understand the WAG process in detail and further it helps to validate future numerical models related to this process.

Original languageBritish English
Article number012023
JournalJournal of Physics: Conference Series
Issue number1
StatePublished - 23 Aug 2019
EventInternational Conference on Recent Advances in Fluid and Thermal Sciences 2018, iCRAFT 2018 - Dubai, United Arab Emirates
Duration: 5 Dec 20187 Dec 2018


  • Enhanced Oil Recovery (EOR)
  • Glass Beads
  • Micro-Porous Media
  • Water Alternating Gas (WAG)


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