Non Magnetic Heavy Weight Drill Pipe (NMHWDP)
Features:
- Non-Magnetic Material: Constructed from non-magnetic alloys, typically non-magnetic stainless steel, to prevent magnetic interference with downhole electronic instruments.
- Increased Wall Thickness: Thicker walls compared to standard drill pipes, providing additional strength and durability.
- High Tensile Strength: Engineered to withstand high tension and compression forces, making it suitable for demanding drilling conditions.
- Corrosion Resistance: Resistant to corrosion, ensuring a longer operational lifespan even in aggressive drilling environments.
- Precision Manufacturing: Manufactured to strict tolerances to ensure optimal performance and reliability.
Functions:
- Weight Distribution: Adds weight to the drill string, helping to maintain proper weight on the bit and stabilizing the bottom hole assembly (BHA).
- Shock Absorption: Acts as a shock absorber, reducing the impact of drilling vibrations and protecting the drill string and downhole tools.
- Directional Control: Enhances directional control by providing a stable and rigid connection within the drill string, thus aiding in maintaining the desired drilling trajectory.
- Data Accuracy: By being non-magnetic, it ensures that measurement-while-drilling (MWD) and logging-while-drilling (LWD) tools can gather accurate data without magnetic distortion.
Uses:
- Directional and Horizontal Drilling: Crucial for operations requiring precise directional control and accurate data collection, such as directional, horizontal, and extended-reach drilling.
- Measurement While Drilling (MWD): Used in conjunction with MWD tools for real-time data acquisition regarding the wellbore’s direction and inclination.
- Logging While Drilling (LWD): Works with LWD tools to gather geological data during the drilling process, such as formation properties and wellbore conditions.
Application Scenarios:
- Oil and Gas Exploration: Extensively used in the oil and gas industry to optimize drilling operations and enhance wellbore placement accuracy.
- Geothermal Drilling: Utilized in geothermal energy projects where precise drilling is essential to access geothermal reservoirs efficiently.
- Mining and Mineral Exploration: Applied in the mining industry for exploratory drilling to obtain accurate subsurface data.
- Scientific Research: Employed in scientific drilling projects requiring detailed subsurface information for research purposes.
Benefits:
- Enhanced Performance: The combination of increased wall thickness and non-magnetic properties enhances overall drilling performance and tool longevity.
- Improved Data Integrity: Ensures accurate data collection by eliminating magnetic interference, which is critical for making informed drilling decisions.
- Operational Efficiency: Contributes to smoother drilling operations by stabilizing the drill string and reducing wear and tear on drilling equipment.

Technical Parameters (or customized)
SPEC.(MM) | OD.(MM) | Magnetic Permeability | Tensile Strength (Mpa) | Yield Strength (Mpa) |
Φ63 | 63 | ≤1.005 | ≥1035 | ≥965 |
Φ73 | 73 | ≤1.005 | ≥1035 | ≥965 |
Φ76 | 76 | ≤1.005 | ≥1035 | ≥965 |
Φ89 | 89 | ≤1.005 | ≥1035 | ≥965 |
Φ91 | 91 | ≤1.005 | ≥1035 | ≥965 |