The TVR is a non-rotating drill string sub, intended for use in deviated wells, where excessive rotary drill torque as well as vibration causes drilling problems. The TVR is a short one piece mandrel, fitted with a virtually friction free self-lubricating bearing, supported by a non-rotating sleeve.

Options Available
TVR subs are available in all drill pipe sizes, complete with API or high torque premium connection.

Benefits
• Easy installed and requires no additional handling
• Reduces torque and drag
• Reduces vibration
• Increases bit performance and bit life
• Minimises casing wear
• Reduces drill string wear and fatigue
• Improves performance and protects rotary steerable systems

Cost Saving
• Increases ROP
• Extended bit life
• Protects down-hole tools from premature wear
• Protects casing
• Reduces trip time