Casing Window Milling & Sidetracking Solution for Oil & Gas Wells
The KTK Energy Whipstock System is a high-performance downhole sidetracking solution designed for casing window milling and wellbore sidetracking operations in oil & gas drilling and well intervention.
Engineered in accordance with API standards, this system enables operators to create a controlled window in casing or open hole sections, allowing the drill bit to deviate and establish a new wellbore trajectory. It is widely used in well re-entry, damaged casing recovery, and production optimization projects.
The system includes:
- Retrievable Whipstock
- Permanent Whipstock
- Hydraulic Set Whipstock
- Mechanical Set Whipstock
- Casing Whipstock
- Open Hole Whipstock
With advanced engineering design and global supply capability, KTK Energy delivers reliable whipstock systems tailored for Middle East, Africa, North America, and offshore drilling markets.
Technical Specifications
General Performance Parameters
| Parameter | Value |
| Applicable Casing Size | 5″ – 13 3/8″ |
| Window Length | 1600 – 4300 mm |
| Max Well Inclination | ≤ 40° |
| Max Working Temperature | ≤ 200°C |
| Setting Method | Hydraulic / Mechanical |
| Packing Method | Bowling Press / Direct Press |
| Connection Type | 2 3/8 REG – 4 1/2 REG / NC31 – NC50 |
Typical Size Configuration
| Casing Size | OD (mm) | Length (mm) | Window Length (mm) | Connection |
| 5″ | φ102 | 3210 – 3720 | 1600 – 1800 | 2 3/8 REG |
| 5 1/2″ | φ114 | 3450 – 3960 | 1800 – 2000 | 2 7/8 REG / NC31 |
| 6 5/8″ | φ136 – 142 | 3940 – 4450 | 2000 – 2200 | 3 1/2 REG / NC38 |
| 7″ | φ146 – 150 | 4000 – 4200 | 2400 – 2500 | 3 1/2 REG / NC38 |
| 7 5/8″ | φ160 | 4200 | 2500 – 2700 | 3 1/2 REG / NC38 |
| 9 5/8″ | φ210 | 4600 | 2700 – 3000 | 4 1/2 REG / NC50 |
| 13 3/8″ | φ300 | 5600 | 3800 – 4300 | 4 1/2 REG / NC50 |
Key Features
1. Precision Sidetracking Control
Provides accurate deflection angle for controlled wellbore deviation and trajectory design.
2. Multiple Configuration Options
Supports retrievable, permanent, hydraulic, and mechanical setting systems, adaptable to different well conditions.
3. API-Compliant Engineering
Manufactured in accordance with API standards, ensuring compatibility with global oilfield operations.
4. High-Temperature & High-Load Capability
Designed for HPHT environments (≤200°C) and high mechanical stress conditions.
5. Flexible Installation Methods
Supports bowling press and direct press setting, ensuring operational flexibility at rig site.
6. Integrated Sidetracking System
Works seamlessly with:
- Window milling tools
- Downhole motors
- BHA directional systems
Applications
1. Casing Window Milling
- Creation of casing exit windows
- Controlled sidetrack initiation
2. Well Re-Entry & Sidetracking
- Re-drilling from existing wells
- Bypassing damaged zones
3. Damaged Well Recovery
- Collapsed casing sections
- Sand-filled or blocked reservoirs
4. Production Optimization
- Re-entering non-producing wells
- Accessing new reservoir zones
5. Offshore & Mature Field Operations
- Cost-effective well reuse
- Extending field life cycle
Advantages
✔ Cost-Effective Well Reuse
Avoids drilling new wells by enabling sidetracking from existing casing.
✔ Improved Operational Efficiency
Reduces rig time through precise and reliable window milling.
✔ High Reliability in Harsh Conditions
Performs consistently in HPHT and complex geological formations.
✔ Flexible Deployment Options
Multiple system configurations for different drilling and intervention scenarios.
✔ Enhanced Wellbore Control
Ensures accurate sidetrack trajectory and improved drilling success rate.
✔ Supplier + Manufacturer Hybrid (KTK Energy)
KTK Energy integrates:
- Engineering design
- Manufacturing participation
- Global supply chain
Providing high-quality whipstock systems with fast delivery and technical support.
FAQ
What is a whipstock system used for?
A whipstock system is used to create a window in casing or open hole to enable sidetracking and drilling a new wellbore trajectory.
What is the difference between retrievable and permanent whipstock?
- Retrievable whipstock can be removed after operation
- Permanent whipstock remains downhole for long-term use
How does a whipstock work?
It provides a deflection surface that guides the milling tool and drill bit to cut a window and initiate a sidetrack.
When should a whipstock be used?
It is used in:
- Damaged wells
- Well re-entry operations
- Sidetracking projects
- Production enhancement
Can whipstock systems be used in high-temperature wells?
Yes, KTK Energy whipstock systems are designed for temperatures up to 200°C.
What tools are used together with a whipstock?
Typical system includes:
- Window milling tools
- Downhole motor
- Drill string / BHA components
Conclusion
The KTK Energy Whipstock System is a reliable and field-proven solution for casing window milling and sidetracking operations in modern oilfield environments.
With API-compliant design, multiple configuration options, and strong adaptability to complex wells, it enables operators to maximize well productivity, reduce costs, and extend asset life.
KTK Energy, as a supplier + manufacturer hybrid, provides not only high-quality tools but also engineering support and customized solutions for global oilfield service companies.