The Super Fishing Jar from KTK Energy is a high-performance downhole tool designed for fishing operations and stuck tool recovery in oilfield environments.
By integrating mechanical and hydraulic operating principles, this tool delivers powerful upward jarring force to effectively release and retrieve stuck or lost downhole equipment.
Engineered with a compact structure and adjustable mechanism, the KTK Energy Super Fishing Jar provides reliable performance across a wide range of well conditions, making it a critical component in fishing tool assemblies and workover operations.
What is a Super Fishing Jar?
A super fishing jar is an upward-acting impact tool used in oilfield operations to:
- Generate upward jarring force
- Free stuck or lost tools in the wellbore
- Improve efficiency in fishing and recovery operations
It combines:
- Mechanical activation (load-based triggering)
- Hydraulic energy control (stable impact delivery)
This design ensures consistent and repeatable jarring performance in complex downhole conditions.
Key Features
- Upward jarring mechanismfor efficient tool recovery
- Hybrid mechanical-hydraulic designfor stable operation
- Adjustable settingsfor different downhole conditions
- Compact and robust structurefor easy handling
- High tensile strength and torsional capacity
- Reliable performance in complex fishing operations
- Compatible with standard fishing tool assemblies and BHA systems
Technical Specifications
| Model | OD (mm/in) | ID (mm/in) | Max Tensile Load | Tensile Yield | Torsional Limit | Torsional Yield | Length | Connection |
| 4-1/4″ | 108 (4-1/4) | 31.8 (1-1/4) | 800 kN | 1350 kN | 10 kN·m | 18 kN·m | 3883 mm | NC31 |
| 4-1/2″ | 114 (4-1/2) | 38.1 (1-1/2) | 900 kN | 1440 kN | 12 kN·m | 20 kN·m | 3883 mm | NC31 |
| 4-3/4″ | 121 (4-3/4) | 50.8 (2) | 1100 kN | 1950 kN | 15 kN·m | 27 kN·m | 3883 mm | NC38 |
| 5-1/2″ | 140 (5-1/2) | 38.1 (1-1/2) | 1300 kN | 2350 kN | 20 kN·m | 36 kN·m | 3883 mm | NC31 |
| 6-1/2″ | 165 (6-1/2) | 57.2 (2-1/4) | 2000 kN | 3750 kN | 30 kN·m | 75 kN·m | 3976 mm | NC50 |
| 7″ | 178 (7) | 60 (2-5/16) | 2400 kN | 4650 kN | 35 kN·m | 80 kN·m | 3986 mm | NC50 |
| 8″ | 203 (8) | 71.4 (2-13/16) | 2800 kN | 6650 kN | 45 kN·m | 90 kN·m | 4329 mm | 6-5/8 REG |
| 9″ | 229 (9) | 76.2 (3) | 3000 kN | 8000 kN | 65 kN·m | 120 kN·m | 4389 mm | 7-5/8 REG |
Applications
KTK Energy Super Fishing Jars are widely applied in:
Fishing Operations
- Retrieval of stuck or lost downhole tools
- Recovery of drill string components
- Complex wellbore intervention
Workover Operations
- Tool release in recompletion operations
- Downhole equipment recovery
- Well maintenance
Drilling Support
- Stuck pipe recovery assistance
- BHA tool release
- High-risk well environments
Advantages
1. Efficient Tool Recovery
Provides strong upward impact force to quickly release stuck tools, reducing downtime.
2. Stable and Controlled Performance
Mechanical-hydraulic system ensures consistent jarring energy output.
3. Adaptability to Downhole Conditions
Adjustable mechanism allows optimization based on:
- Well depth
- Temperature
- Load conditions
4. Compact and Easy Operation
Simplified structure improves:
- Handling at rig site
- Operational efficiency
5. Reduced Non-Productive Time (NPT)
Improves recovery success rate and minimizes drilling interruptions.
How It Solves Downhole Problems
Problem:
Stuck or lost tools in the wellbore during drilling or workover
Solution:
KTK Energy Super Fishing Jar delivers:
- High-energy upward impact
- Repeatable jarring cycles
- Controlled activation
Result:
Faster recovery, reduced operational risk, and improved efficiency
Summary
The Super Fishing Jar by KTK Energy is a reliable and efficient solution for downhole fishing operations.
With its hybrid mechanical-hydraulic design, adjustable configuration, and high-strength construction, it ensures effective tool recovery, operational flexibility, and reduced downtime in complex oilfield environments.
FAQ
1. What is a super fishing jar used for?
It is used to generate upward impact force to retrieve stuck or lost downhole tools during fishing operations.
2. How does a fishing jar work?
It stores energy through drill string movement and releases it as an upward impact force to free stuck tools.
3. What is the difference between a fishing jar and a drilling jar?
Fishing jars are primarily designed for tool recovery, while drilling jars are used during drilling to free stuck BHA components.
4. Where is the fishing jar placed in the tool string?
It is typically installed within the fishing string, above the stuck tool to maximize upward impact efficiency.
5. Is it suitable for complex wells?
Yes, it is designed for complex well conditions, including deep wells and high-load environments.