Technology of casing deep wells by light cement slurries with microspheres in the Republic of Kazakhstan

Authors: S.E. Chernyshov, N.I. Krysin (Perm National Research Polytechnic University, RF, Perm), A.V. Mosin (Ontustik Munaygas JSC, the Republic of Kazkhstan, RF, Shymkent)

Key words: technology of casing, producing deep wells, light cement slurries, spacers, microspheres, improve the quality of oil wells casing.

To improve the quality of oil wells casing the fulfillment of a complex of measures is required. Complex includes the preparation of the well bore to the cementing jobs, at the preparation of cement slurries with the required technological properties, at the realization of the mode of spacer and cement squeezing grout injection, at the ensuring the safety of a cement stone and etc. A comprehensive approach taking into account the geological features of the oilfields allows effectively solve the task of improving the quality of the oil wells casing.