Retraction of “Stability Analysis of Xanthan–Cr(III)–Clay Nanocomposite Gel: An Experimental Investigation”

Abstract

Injection of gel polymers is a possible method to prevent unwanted water production in hydrocarbon reservoirs. Gel polymers have different types but the stable form of them is more pleasant. In this experimental study, a nanocomposite gel polymer was prepared by xanthan (as polymer), chromium acetate (III) (as cross-linker), montmorillonite nano-clay (as additive), and formation water (as solvent). Effects of some parameters such as polymer and cross-linker concentrations, percentage of montmorillonite nano-clay, and formation water were investigated on nanocomposite gel structure. The results illustrate that nanocomposite gel will gain higher stability by increasing polymer and cross-linker concentrations and also by increasing nano-clay percentage. For more investigation of stability, syneresis test, and rate of evaporation test were applied by the bottle testing method. According to the results, for all samples, the optimum percent of montmorillonite is 5%. In order to examine the effect of produced na...