The Mechanical-Hydraulic Drilling Jar from KTK Energy is a hybrid downhole tool designed to deliver controlled upward and downward impact forces in drilling operations.
By combining the operational principles of mechanical drilling jars and hydraulic drilling jars, this tool provides enhanced reliability, flexible activation, and consistent jarring performance across a wide range of well conditions.
It is widely used in directional drilling tools systems, BHA (Bottom Hole Assembly) configurations, and fishing operations, where tool sticking or differential sticking may occur.
Technical Specifications
| Model | 4-3/4″ | 6-1/2″ | 8″ |
| OD | 121 mm (4-3/4″) | 165 mm (6-1/2″) | 203 mm (8″) |
| ID | 44.5 mm (1-3/4″) | 57.2 mm (2-1/4″) | 70 mm (2-3/4″) |
| Connection | NC38 | NC50 | 6-5/8 REG |
| Max Upward Force | 350 kN (79,000 lbf) | 700 kN (160,000 lbf) | 1000 kN (225,000 lbf) |
| Max Downward Force | 180 kN (40,000 lbf) | 350 kN (79,000 lbf) | 500 kN (112,000 lbf) |
| Max Tensile Load | 1100 kN | 2000 kN | 2800 kN |
| Tensile Yield | 1950 kN | 3750 kN | 6650 kN |
| Torsional Limit | 15 kN·m | 30 kN·m | 45 kN·m |
| Torsional Yield | 27 kN·m | 75 kN·m | 90 kN·m |
| Length | 8950 mm | 9310 mm | 9806 mm |
What is a Mechanical-Hydraulic Drilling Jar?
A mechanical-hydraulic drilling jar is a bidirectional impact tool used in drilling operations to:
- Generate impact force through drill string manipulation
- Release stuck tools or assemblies
- Restore normal drilling operations efficiently
It integrates:
- Mechanical triggering mechanism(load-based activation)
- Hydraulic delay system(controlled energy release)
This combination ensures predictable jarring force and improved operational control.
Key Features
- Bidirectional jarring capability(upward and downward impact)
- Hybrid mechanical-hydraulic designfor stable performance
- Controlled activation via tension or compression loads
- High impact energy for freeing stuck BHA components
- Adaptable to various well conditions and drilling environments
- Compatible with directional drilling tools and BHA systems
- Reliable operation in drilling, workover, and fishing applications
How It Solves Downhole Problems (Solution-Oriented Section)
Problem: Stuck drill string or BHA
Solution:
KTK Energy Mechanical-Hydraulic Drilling Jar provides:
- Controlled impact force
- Repeatable jarring cycles
- Reduced non-productive time (NPT)
Result: Faster recovery and improved drilling efficiency
Advantages
Enhanced Stuck Pipe Recovery
The combined mechanical and hydraulic system delivers strong and repeatable impact forces, improving success rates in freeing stuck tools.
Controlled Jarring Performance
Hydraulic delay ensures predictable energy release, reducing risk of tool damage.
Operational Flexibility
Can be activated under both tension and compression, suitable for various well conditions.
Improved BHA Reliability
Reduces stress concentration and protects critical components such as:
- MWD tools
- LWD systems
- Non-magnetic drill collars
Wide Application Range
Applicable for:
- Drilling
- Workover
- Fishing
Applications
KTK Energy Mechanical-Hydraulic Drilling Jars are widely used in:
Drilling Operations
- Directional drilling and horizontal wells
- Extended Reach Drilling (ERD)
- Complex well trajectories
Stuck Pipe Situations
- Differential sticking
- Mechanical sticking
- Key seating
Workover & Fishing
- Tool recovery operations
- BHA release
- Downhole intervention
FAQ
What is a mechanical-hydraulic drilling jar used for?
It is used to generate impact force to free stuck drill strings or BHA components during drilling and workover operations.
How does it differ from a hydraulic drilling jar?
A mechanical-hydraulic jar combines mechanical activation with hydraulic delay, offering more controlled and flexible jarring performance.
Can it deliver both upward and downward impact?
Yes, it is designed for bidirectional jarring, allowing both upward and downward force application.
Where is it installed in the BHA?
It is typically placed above sensitive tools such as MWD/LWD systems to protect them during jarring operations.
Is it suitable for directional drilling?
Yes, it is widely used in directional drilling tools systems and complex well trajectories.
Summary
The Mechanical-Hydraulic Drilling Jar by KTK Energy is a reliable and versatile downhole tool designed to deliver controlled bidirectional impact in complex drilling environments.
By combining mechanical triggering with hydraulic delay, it provides enhanced jarring efficiency, improved operational safety, and reduced downtime, making it an essential component in modern directional drilling and BHA systems.
Mechanical-Hydraulic Drilling Jar for BHA | Bidirectional Impact Tool | KTK Energy Supplier & Manufacturer
KTK Energy mechanical-hydraulic drilling jar delivers controlled bidirectional impact for stuck pipe recovery. Reliable BHA tool for drilling, workover & fishing operations worldwide.
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