Patent ID: 11098235

Abstract:
A method of converting a drilling fluid into a geopolymer cement slurry includes introducing the drilling fluid into a wellbore, in which the drilling fluid comprises Na2SiO3, NaCl, or both. The method further includes introducing Saudi Arabian volcanic ash into the wellbore. The Saudi Arabian volcanic ash comprises SO3, CaO, SiO2, Al2O3, Fe2O3, MgO, and K2O. The method further includes allowing the Saudi Arabian volcanic ash to contact the drilling fluid in the wellbore, thereby converting the drilling fluid into the geopolymer cement slurry. A method of cementing a casing in a wellbore includes introducing a drilling fluid into a wellbore, in which the drilling fluid comprises Na2SiO3, NaCl, or both, and introducing Saudi Arabian volcanic ash into the wellbore to form the geopolymer cement slurry. The method further includes curing the geopolymer cement slurry to cement the casing in the wellbore.