A favorable trend of oil displacement occurs when: (1) k rw μ w k ro μ o = M ≤ 1 where M is the mobility ratio, μ w is the water viscosity (mPa·s), μ o is the oil viscosity (mPa·s), and k rw and k ro are the relative permeabilities of water and oil, respectively (mD).
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Enhancing Oil Recovery by Polymeric Flooding with Purple Yam and Cassava Nanoparticles.
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