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Performance of polyacrylamide/Cr(III) gel polymer in oil recovery from heterogeneous porous media: An experimental study

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Abstract

Water channeling due to reservoir heterogeneity is an important factor that could decrease the displacement efficiency of a water flooding process. In this study, the ability of polyacrylamide/ chromium acetate system on altering water path in heterogeneous layered media was investigated using glass bead micromodels. After the relevant parameters were optimized, a series of water and gel injection experiments were conducted in glass bead micromodel. The experimental results show that sweep efficiency is basically controlled by gel strength. The gel strength has a minor impact on the oil recovery from the higher permeable zone, whereas the oil recovery from the lower permeable zone is a strong function of gel strength. Gels with F and G strength codes were observed to divert the water path mostly into low permeable layers. Whereas, gels with B strength code or weaker would alter the water path within the higher permeable layers.

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Correspondence to Masoud Riazi.

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Kargozarfard, Z., Riazi, M., Ayatollahi, S. et al. Performance of polyacrylamide/Cr(III) gel polymer in oil recovery from heterogeneous porous media: An experimental study. Korean J. Chem. Eng. 33, 3350–3358 (2016). https://doi.org/10.1007/s11814-016-0228-x

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  • DOI: https://doi.org/10.1007/s11814-016-0228-x

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