The use of centralizers provides a uniform gap between the casing and the borehole walls, which improves the quality of cementing of the main string and prevents damage to the filters when running the liner. The centralizer is installed on the casing pipe and is attached to the pipe with three screws located in the blades. It can also be fastened with retaining rings.


1Nominal diameter of the casing pipe, mm114…245
2Centralizer inner diameter over rings, mm116…247
3Maximum outer diameter of the centralizer, mm150…310
4Centralizer length, no more, mm300
5Width of the centralizer rib, mm30…50
6Number of centralizer ribs, pcs6