Delivery of remedial amendments to lower-permeability zones through fluid viscosity modifications
Laboratory experiments and numerical studies have been conducted to investigate the use of a shear-thinning polymer (Xanthan gum) to improve access to low-permeability zones in heterogeneous systems. The impact of polymer concentration, fluid injection rate, and permeability contrast in the heterogeneous systems has been studied in a series of eleven two-dimensional flow-cell experiments. The Subsurface Transport over Multiple Phases (STOMP) simulator was modified to include polymer-induced shear thinning effects. The experimental and simulation results clearly show that using the polymer leads ...
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Oostrom, M.; Zhong, L.; Wietsma, T. W.; Covert, M. A.; Queen, T. E.