詳細(xì)說明

By using an expansion hanger to suspend small casing and combining it with cementing or

 squeezing cement, the damaged casing can be repaired, fully reflecting the characteristics 

of the large diameter after the expansion hanger is installed, and larger sized small casing 

can be suspended in the damaged well.

Applicable scope:

Wells with casing misalignment, small diameter, and inability to provide casing compensation;

A casing damaged well with small casing suspended in a large section.