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This study is devoted to the study of grouting mixtures for cementing oil and gas, hydrogeological and exploration wells. In order to improve technical and operational parameters, a number of highly effective modifiers are used, including nanocarbon materials. The article provides the properties of carbon black obtained by processing tires, and also shows an analysis of its effect on the physical and mechanical properties of grouting mixtures made from ordinary Portland cement CEM-I. The research on receiving a high-strength grouting composition for well cementing is presented. The optimal content of carbon black and plasticizers in the binder has been estimated, which makes it possible to access the required technological properties of cement stone in comparison with a solution without additives. It has been determined that small doses of nanocarbon modifiers are needed to effectively affect the properties of the cement stone. The physical, mechanical and operational properties of the modified grouting mixture are considered.

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