Effect of Zn2+ and K+ as Retarding Agents on Rock-Based Geopolymers for Downhole Cementing Operations

Abstract Geopolymer material has a potential to function alongside Portland Cement as an efficient cementitious for well cementing and plug abandonment applications. requires retarding agents be displaced into the while considering properties required maintain zonal isolation through superior mechanical properties. Chemical admixtures affect structure can, in some cases, jeopardize integrity if not engineered properly suite downhole conditions. The present article shows effect of Zn2+ K+ species have on slurry, mechanical, microstructural approach been carried out obtain preliminary overview how can behave mix design slurries where eventually sealing performance was examined. Samples were cured examined periods 1, 3, 7, 14, 28 days at results obtained confirm retardation by addition shortcomings early strength development due poisoning mechanism species. This phenomenon indicates formation Ca-Zn phase that hinder nucleation geopolymeric gel structure. No significant effects observed throughout curing period. also increasing threshold hydraulic sealability. It may concluded tested require furthermore minimize specifically development.