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Engineered drilling tools designed for demanding oilfield applications.
Anti Stick-Slip Tool
Anti Stick-Slip Tool is designed to reduce torsional vibration and stick-slip effects during drilling operations. It improves drilling stability, enhances bit performance and protects downhole tools such as motors and MWD systems.
Category:
Downhole Tools
The Anti Stick-Slip Tool is a downhole friction, drag, and vibration reduction tool designed to mitigate stick-slip phenomena during drilling operations.
It works by transmitting circumferential and longitudinal vibration through a spiral drive assembly to internal damping elements, effectively absorbing energy and stabilizing torque fluctuations in the drill string.
This tool is particularly effective in challenging formations where severe stick-slip may cause premature bit damage, tool failure, or drilling inefficiency.
- Anti Stick-Slip Tools for drilling vibration control
- Multiple OD sizes for different BHA configurations
- Standard API connections for easy integration
- Models suitable for medium to ultra-deep drilling operations
- Effectively reduces stick-slip and torque fluctuation
- Absorbs both circumferential and longitudinal vibration
- Dual stiffness design: low stiffness followed by high stiffness
- Improves drilling stability and rate of penetration (ROP)
- Extends service life of drill string and drilling tools
The torque driving section is connected by mandrel and mandrel sub, allowing circumferential and longitudinal vibration to be transmitted through the spiral drive assembly.
The energy storage section consists of extension joints, extension mandrel, upper and lower barrel bodies, and damping spring elements, which absorb vibration energy and smooth torque output.
| Model | HNG121 | HNG172 | HNG209 | HNG241 |
|---|---|---|---|---|
| OD | 4 3/4" | 6 3/4" | 8 1/4" | 9 1/2" |
| Work Temp. | -40°C ~ 150°C | |||
| Upper Connection | NC38 | NC50 | 6 5/8 REG | 6 5/8 REG |
| Lower Connection | NC38 | NC50 | 6 5/8 REG | 7 5/8 REG |
- Raw material certification available
- Dimensional and assembly inspection
- Functional testing prior to delivery
- Project-based inspection documentation available
- Well type and drilling application
- Required OD and BHA position
- Connection type (NC / REG / IF)
- Operating temperature and load conditions
- Quantity and delivery schedule
Unionlever OFS supplies Anti Stick-Slip Tools designed to address real drilling challenges caused by torque fluctuation and vibration.
We support engineering selection, BHA integration advice, and trial orders, helping customers optimize drilling performance while reducing tool and bit failures.
Oilfield downhole tools are essential components used in modern oil and gas drilling operations to improve efficiency, stability, and safety. Designed for challenging downhole environments, these tools support accurate drilling performance, reduce vibration, enhance tool life, and optimize bottom hole assembly (BHA) operations. High-quality oilfield downhole tools help operators overcome complex formations, minimize drilling risks, and achieve better penetration rates. With advanced engineering, durable materials, and reliable performance, they are widely applied in directional drilling, deep well drilling, and demanding oilfield projects. Choosing the right oilfield downhole tools ensures smoother operations, reduced maintenance costs, and improved overall drilling productivity.
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Building upon more than a decade of field experience, Unionlever OFS offers a comprehensive portfolio covering downhole drilling tools, fishing tools, handling tools, well control equipment, cementing tools, and solid-control systems.
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Unionlever Oilfield Equipment Co., Limited
A Member of
Unionlever International Group Limited
(Established Since 2010)
"To be a globally trusted leader in oilfield equipment and integrated supply solutions."
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