Other equipment

Designed for cleaning from rust, cement cake, paraffin and other deposits of the inner surface of drill strings.
Provides centering of the liner relative to the wellbore during running and cementing.
Provides turbulization of the flow of cement slurry in the annulus during cementing of liners in order to improve the displacement of the drilling fluid by the grouting. Due to the elastic properties of the material, it reduces drag when running the casing string.