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.
|1||Nominal diameter of the casing pipe, mm||114…245|
|2||Centralizer inner diameter over rings, mm||116…247|
|3||Maximum outer diameter of the centralizer, mm||150…310|
|4||Centralizer length, no more, mm||300|
|5||Width of the centralizer rib, mm||30…50|
|6||Number of centralizer ribs, pcs||6|