The centralisation of casing and liners as well as the correct positioning of the centralisers are essential parts of any casing or liner job. The main reason for centralisation is to ensure a homogeneous distribution of cement around the casing. No centralisation or poor centralisation will cause channelling of the cement and hence produce a poor cement bond.
When running casing, adequate use of centralisers reduces the chance of wall sticking.
In a deviated well because of the increased amount of support, the casing requires to stay in the . . .