MELDOR- Directional sensor MWD LWD
UNIQUE ACCELEROMETER-FREE TECHNOLOGY
Introduction
The MELDOR directional sensor is a specialized device designed for integration into various magnetometric-inclinometric systems. It provides high-precision measurements of magnetic azimuth, inclination, and rotation angle around its own axis. The module’s design is optimized for operation under elevated mechanical and thermal loads, making it suitable for drilling vertical, inclined, and lateral wellbores.
Unique Features of the MELDOR Directional Sensor
The MELDOR directional sensor stands out from traditional solutions by eliminating accelerometers, which are typically used in standard inclinometric systems. Instead, it utilizes next-generation liquid-based capacitive tilt sensors that deliver exceptional measurement accuracy: the inclination error does not exceed ±0.03°, and its resolution reaches 0.005°. These accuracy levels are unachievable in inclinometric systems based on conventional accelerometer-based designs.
The magnetometer used in the MELDOR directional sensor is also one of the company’s latest developments, featuring a new digital signal processing method that enhances measurement dynamics and reduces nonlinearity.
This engineering approach ensures the module remains stable even under elevated temperatures, vibrations, and mechanical stress. In addition, MELDOR has the smallest dimensions among currently available inclinometric devices (28 mm in diameter and 373 mm in length). Its design supports the sequential connection of up to seven different modules, including two MELDOR inclinometric modules and up to five gamma logging modules, offering flexibility in constructing measurement assemblies and enabling the formation of multiple azimuthal gamma ray beams.
All MELDOR directional sensor channels are calibrated automatically along a wide range of predefined trajectories, which distinguishes it from systems that rely on interpolation from a limited number of preset points. This approach ensures high accuracy and guarantees that the module readings remain stable and reliable throughout the entire trajectory space, including sections with abrupt changes in inclination or direction.
Description of the MELDOR Directional Sensor
The MELDOR directional inclinometric module is built on a standard architecture and includes a triaxial fluxgate magnetometer and a triaxial tilt sensor. The module outputs data on magnetic azimuth, inclination, rotation angle, three components of the magnetic and gravitational fields, and internal temperature. Additional parameters can be provided upon user request. The module is equipped with two MDM-type 9-pin connectors for serial connection of multiple modules.
In-House Manufacturing — The Key to Innovation and Quality
Our company designs and manufactures all critical components of the MELDOR directional sensor in-house, including capacitive tilt sensors and fluxgate magnetometers. This allows us to maintain full quality control, rapidly implement technological innovations, and remain independent of external suppliers. This approach ensures a high level of system reliability and precision, giving us a sustainable competitive edge in the market.
Conclusion
The MELDOR directional sensor is a modern, high-precision, and reliable device adapted for use in demanding field conditions. The use of innovative liquid-based capacitive tilt sensors and advanced fluxgate magnetometers ensures exceptional measurement accuracy and operational stability. In-house production of key components guarantees complete quality control and rapid integration of new technologies, making the MELDOR directional sensor a competitive solution for integration into magnetometric-inclinometric systems of various types.
Frequently Asked Questions (FAQ)
1. What is the purpose of the MELDOR directional sensor?
The module is designed for integration into magnetometric-inclinometric systems and is used for high-precision measurement of magnetic azimuth, inclination, and rotation angle — including in the drilling of wells of various configurations.
2. What is the inclination accuracy of the MELDOR directional sensor?
The design omits accelerometers and instead uses next-generation liquid-based capacitive sensors, delivering unmatched inclination accuracy (±0.03°) and high resolution (0.005°).
3. Can MELDOR be combined with other modules?
Yes, the module supports serial connection with other inclinometric and gamma logging modules, providing flexibility in constructing measurement assemblies.
4. Who manufactures the module’s components, and how does this affect quality?
All critical components — capacitive tilt sensors and fluxgate magnetometers — are produced in-house. This ensures quality control, fast innovation cycles, and high product reliability.
5. What conditions can the MELDOR module operate in?
The device is designed to operate under high temperatures, vibrations, and mechanical loads, making it a reliable tool for drilling and geophysical research.
