AN EXPANDABLE CENTRALIZER DEVICE FOR A CASING

摘要

Expandable centralizer device (1) for a casing (2) wherein the centralizer device (1) comprises a number of leaf spring like slats (8) distributed around the casing (2) and arranged to be able to be displaced through a sealing portion (18), wherein the slats (8), at least on the outside and in an elongated portion, are provided with a structural coating (14) softer than the sealing portion (18) material.