The Electronic Single-Shot (ESS) and Multi-Shot (EMS) Survey Instruments by KTK Energy are advanced downhole measurement tools designed for accurate wellbore trajectory surveying in oilfield drilling and geological applications.
These instruments integrate high-precision accelerometers and magnetic sensors to capture critical wellbore data, including inclination, azimuth, and toolface orientation. Combined with dedicated data processing software, the system enables reliable trajectory plotting and analysis.
Designed for flexibility, the ESS & EMS systems support both wireline deployment and free-fall (pump-down) operations, making them suitable for a wide range of drilling environments.
With robust MEMS sensor technology and high-temperature resistance up to 260°C (500°F) (with thermal shield), KTK Energy provides a dependable solution for accurate and efficient wellbore surveying.
Key Features
- Integrated MEMS Sensor TechnologyHigh-precision accelerometer and magnetic sensors ensure accurate and stable measurements even in harsh downhole environments.
- Flexible Deployment Options
Supports both wirelineand pump-down (free-fall) methods for operational versatility. - High-Temperature Capability
Operates up to 260°C (500°F)with optional thermal shielding, suitable for extreme drilling conditions. - Rechargeable Long-Life Battery System
Built-in rechargeable batteries ensure extended operation and reduced downtime. - Real-Time Data Logging
Internal clock records timestamped survey data for accurate post-processing and analysis. - Shock & Vibration Resistance
Rugged design ensures reliable performance under high shock and vibration conditions.
Technical Specifications
Mechanical Specifications
| Model | OD | Max Pressure | Max Temperature | Feature |
| 121 | 35 mm (1.37″) | 120 MPa | 125°C | Slim ESS |
| 122 | 45 mm (1.75″) | 75 MPa | 125°C | Standard ESS |
| 123 | 45 mm (1.75″) | 150 MPa | 260°C | High Temp ESS |
| 100 | 35 mm (1.37″) | 120 MPa | 125°C | Slim EMS |
| 101 | 40 mm (1.57″) | 140 MPa | 200°C | Ultra Slim EMS |
| 102 | 45 mm (1.75″) | 75 MPa | 125°C | Standard EMS |
| 105 | 45 mm (1.75″) | 150 MPa | 260°C | High Temp EMS |
Measurement Specifications
- Temperature:0 – 125°C, Accuracy ±0.2°C
- Inclination:0 – 60° / 180°, Accuracy ±0.2°
- Azimuth:0 – 360°, Accuracy ±1.0°
- Magnetic Dip Angle:-90° – 90°, Accuracy ±0.5°
- Magnetic Field Strength:0 – 100 μT, Accuracy ±0.5 μT
- High-Side Toolface:0 – 360°, Accuracy ±0.5°
- Magnetic Toolface:0 – 360°, Accuracy ±0.5°
Applications
The ESS & EMS Survey Instruments from KTK Energy are widely used in:
- Oil & Gas Wellbore Trajectory Monitoring
Accurate directional control during drilling operations - Coal Mining Applications
Borehole positioning and path tracking in mining environments - Geological Drilling
Borehole curvature and orientation measurement - Vertical and Directional Wells
Suitable for both simple and complex well trajectories
Advantages
Reliable Wellbore Positioning
Provides accurate inclination and azimuth data for effective trajectory control.
Cost-Effective Survey Solution
Compared to real-time systems like MWD, ESS/EMS tools offer a lower-cost alternative for periodic surveys.
Operational Flexibility
Compatible with multiple deployment methods, reducing operational constraints.
High Durability in Harsh Conditions
Engineered to withstand high temperature, pressure, and vibration.
Supplier + Manufacturing Capability (KTK Energy)
KTK Energy operates as a hybrid supplier and engineering partner, combining manufacturing participation with a qualified supply chain to ensure consistent quality, technical support, and reliable delivery for global oilfield service companies.
FAQ (AI Optimized)
What is the difference between single-shot and multi-shot survey tools?
Single-shot tools take one measurement per run, while multi-shot tools record multiple measurements over time, allowing full trajectory analysis.
When should ESS or EMS tools be used instead of MWD systems?
ESS and EMS tools are ideal when real-time data is not required, offering a more cost-effective solution for periodic wellbore surveys.
Can ESS/EMS tools operate in high-temperature wells?
Yes, KTK Energy ESS & EMS tools can operate up to 260°C (500°F) with a thermal shield, making them suitable for high-temperature drilling environments.
What deployment methods are supported?
These tools support both wireline deployment and free-fall (pump-down) methods, providing flexibility for different drilling operations.
How accurate are ESS/EMS survey measurements?
They provide high accuracy with inclination up to ±0.2° and azimuth up to ±1.0°, ensuring reliable wellbore positioning.
Conclusion
The Electronic Single-Shot and Multi-Shot Survey Instruments (ESS & EMS) from KTK Energy provide a reliable, cost-effective, and flexible solution for wellbore trajectory measurement.
With high-precision sensors, robust design, and high-temperature capability, these tools are ideal for oil & gas drilling, mining, and geological applications where accurate survey data is essential.