Downhole tools
Shock Subs
Absorb axial vibration from the bit before it travels up the string.
Overview
A shock sub sits close to the bit and absorbs axial shock and vibration with a spring element. Damping these loads protects the cutting structure, the bottom-hole assembly and surface equipment, and helps keep weight on bit steady.
Shock subs are most valuable in hard and interbedded formations, where bit bounce and vibration are common.
Key Features
- Spring element to absorb axial loads
- Transmits full torque through the tool
- Designs for roller cone and PDC applications
Applications
- Hard, broken and interbedded formations
- Protecting tricone bit bearings
- Reducing vibration-related failures
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