Casing Centralizers from jcpetro's blog

casing centralizermeaning is a mechanical device or cementing tool. It is an integral part of the cementing process.

It is installed outside the casing string secured around the casing at various locations to keep the casing from contacting the well bore walls, acts as a righting sleeve in the well bore.

They provide the mechanism that centers the casing in the hole and allows uniform cement flow around the casing to help protect it at all points.

Casing centralizer as a cementing tool is applied in vertical, deviated and horizontal wells to centralize casing for improving the cementing quality.

As a result of casing centralization, a continuous annular clearance around the casing allows cement to completely seal the casing to the borehole wall.

The cement could be concreted firmed between casing and borehole wall.It can be installed on casing joint or any position working with stop collar for centralizing.

All models offer ample clearance for fluid passage and are extra effective in centering the casing, even in highly deviated holes and improve cement flow by reducing the effects of channeling.

Several styles of centralizers are available for matching different well specifications and hole sizes, including turbulence generating designs that help clean the annuls and distribute the cement more evenly and uniformly.