Non-Magnetic Drilling Subs

Non-Magnetic Drilling Subs are critical components used in directional drilling Bottom Hole Assemblies (BHA) to provide a low-magnetic interference environment for sensitive downhole instruments such as MWD, LWD, and gyro survey tools.

Manufactured from high-performance non-magnetic alloy materials, our Non-Magnetic Drilling Subs effectively minimize magnetic disturbance from conventional drilling components, ensuring accurate measurement of wellbore inclination, azimuth, and trajectory during complex drilling operations.

Designed for demanding oilfield and geological drilling applications, our non-magnetic subs combine excellent mechanical strength, corrosion resistance, precision machining capability, and stable magnetic performance to meet the requirements of modern directional drilling systems.

We provide customized Non-Magnetic Drilling Subs according to customers' drilling conditions, connection requirements, and BHA design specifications.

Low Magnetic Permeability
Our Non-Magnetic Drilling Subs are manufactured using specially developed non-magnetic alloy materials with controlled chemical composition and advanced forging processes. The low magnetic permeability design minimizes interference with geomagnetic field measurements, allowing MWD/LWD systems to obtain more accurate directional data.

High Strength & Mechanical Reliability
Although designed for non-magnetic applications, our drilling subs maintain excellent mechanical strength, torque resistance, fatigue resistance, and impact performance required for severe downhole environments. They are suitable for high-angle wells, extended reach wells, and complex directional drilling operations.

Excellent Corrosion Resistance
The special alloy structure provides excellent resistance against corrosion, stress corrosion cracking, and harsh drilling fluids. The product is suitable for challenging environments including offshore drilling, sour gas wells, and deep drilling applications.

Oil & Gas Directional Drilling: Providing a non-magnetic installation environment for MWD/LWD measurement systems.

Horizontal Well Drilling: Supporting accurate well trajectory control in complex horizontal sections.

Geological Exploration: Used in mineral exploration and scientific drilling requiring precise orientation measurement.

Coal Mine Drilling: Suitable for underground directional drilling applications requiring magnetic interference control.

Raw Material Selection: High-quality non-magnetic alloy materials are selected according to mechanical and magnetic performance requirements.

Forging: Advanced forging technology improves material density and mechanical strength.

Heat Treatment: Controlled heat treatment ensures stable mechanical properties.

Precision Machining: CNC machining guarantees accurate dimensions and thread quality.

Inspection & Testing: Each product undergoes strict inspection before delivery.

To ensure reliable performance, every Non-Magnetic Drilling Sub undergoes comprehensive inspection:

• Chemical composition analysis
• Mechanical property testing
• Magnetic permeability testing
• Ultrasonic testing
• Dimensional inspection
• Thread inspection

Inspection reports and material certificates are available upon request.