▎ 摘　　要

Paper presents the results of the investigations on the influence of graphene oxide water suspension addition on the properties of cement slurries made of CEM I 42.5R ordinary Portland cement. The graphene oxide suspension was added in 0.05 %, 0.10 % and 0.15 % by mass of cement. This addition was resulting in the decreased of the cement slurry filtration by about 40%. Setting duration of slurries was decreased by over 50%, with only slight influence on the initial setting time. This is especially important in cementing gaseous wells. Graphene oxide addition increases viscosity of the slurries, however it does not change rheological model of slurries. All cement slurries had non-Newtonian properties of fluids diluted by shearing, and described with the Herschel-Bulkley model. Addition of graphene oxide suspension resulted in significant increase of strength; 0.10 % addition was found to be the most efficient, with strength gain of about 40%.