Casing recovery operation completed in single trip​
During vibration a high jacking load is simultaneously applied with the DHPT​
Vibration is transferred through the casing spear, reducing the bond strength and friction, enabling casing to be recovered with reduced force​
Jacking/Resonating can be repeated as many times as necessary​
DHPT isolates vibration from drill string​
Vibration not seen at rig floor​
No risk of damage or falling objects on rig floor​