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Non-Magnetic Drill Collar
Description
- 产品描述
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Product Overview
C‑type non‑magnetic drill collars are manufactured from N1310 low‑carbon alloy steel and serve as critical components in directional drilling operations, ensuring that measurement‑while‑drilling (MWD) tools can accurately transmit measurement data free from magnetic interference. The products are produced in strict accordance with API Spec 7‑1, with outside diameters ranging from 3‑1/8 inches to 11 inches. All materials undergo rigorous chemical composition analysis and mechanical property testing.
Product Description
• Basic Information: A non-magnetic drill collar is a specialized drill collar manufactured from N1310 low-carbon alloy steel. For directional drilling operations that employ magnetic measurement tools (MWD), its non-magnetic properties are of critical importance. This material eliminates magnetic interference, thereby preventing distortion of measurement data. Its structure is similar to that of a standard drill collar, but it is fabricated from a specially formulated non-magnetic alloy steel; stringent control of chemical composition ensures the stability of its non-magnetic performance.
• Application scenarios: directional drilling conducted in conjunction with MWD tools; horizontal wells requiring precise measurement data; wells subject to potential magnetic interference; suitable for both onshore and offshore directional drilling operations.
• Product Advantages: Does not generate magnetic interference with MWD tools; certified to API 7‑1 standards; manufactured from the proprietary N1310 non-magnetic alloy; maintains weight on bit (WOB) and rigidity; offers permeability testing.
• Customer Feedback: A critical component in MWD directional drilling operations; customers report highly accurate measurement data, free from magnetic interference.
Frequently Asked Questions (FAQ)
Q: What materials are used?
A: N1310 low-carbon alloy steel.
Q: Why are non-magnetic properties important?
A: It can prevent interference with the MWD measurement tool.
FAQs
Need more technical support?
Can the internal coating be repaired or repainted?
Based on the actual service conditions of drill pipes, locally damaged or worn internal coatings may be inspected, repaired, or re-coated.
Prior to repair, a comprehensive inspection will be conducted to assess internal corrosion, wall thickness, the condition of the existing coating, and the overall structural integrity. Following surface treatment, an FBE internal coating will be reapplied, and curing will be carried out under rigorously controlled process conditions to restore the component’s corrosion resistance, wear resistance, and fluid‑flow‑optimizing performance.
Regular inspection and timely repair of the internal coating help extend the service life of drill pipes and enhance the operational reliability of the drilling system.
How to choose the right internal coating?
Hebei Langwei offers four FBE internal coating systems with varying performance grades to meet diverse drilling requirements:
LPC3000P: Suitable for conventional oil and gas wells, water wells, and geothermal wells;
LPC3000P-HD: Suitable for deep wells, horizontal wells, extended-reach wells (ERD), and highly abrasive operating conditions;
LPC5000P: Suitable for deep wells, ultra-deep wells, and drilling operations with stringent requirements for hydraulic efficiency and service life;
LPC5000P-HD: Suitable for high‑temperature, high‑pressure (HPHT) wells, sour gas and oil wells (H₂S/CO₂), and other extreme drilling environments.
Hebei Langwei’s technical team can, based on the customer’s wellbore configuration, drilling fluid system, operating temperature, circulation rate, corrosive media, and specific drilling conditions, recommend the most suitable internal coating solution, achieving an optimal balance among product performance, service life, and overall total cost of ownership.
What internal coating systems do you offer?
LPC3000P: Suitable for conventional oil and gas wells, water wells, geothermal wells, and standard drilling operations;
LPC3000P-HD: Suitable for deep wells, horizontal wells, shale oil and gas wells, and highly abrasive operating conditions, offering superior wear resistance.
LPC5000P: Suitable for deep wells, ultra-deep wells, and high-temperature, complex operating conditions, particularly for projects with stringent requirements for wear resistance, hydraulic efficiency, and service life.
LPC5000P-HD: Designed for ultra-deep wells, high-pressure/high-temperature (HPHT) wells, sour gas wells (H2S/CO2), and other extreme drilling environments, it delivers exceptional wear and corrosion resistance as well as long-term operational reliability.
Why do drill pipes require an internal coating?
Adopting an FBE internal coating can provide the following advantages:
* Enhance corrosion resistance;
* Enhances resistance to erosion and wear;
* Reduce fluid flow resistance;
* Reduce pump pressure loss;
* Reduces scaling and deposit adhesion;
* Extend the service life of drill rods.
These advantages help improve drilling efficiency while reducing equipment maintenance costs and downtime.
What is an inner coating for drill pipes?
Compared with conventional drill pipes, coated‑in‑pipe drill pipes feature a smoother inner surface, which reduces flow resistance and pressure loss, minimizes scale buildup, enhances circulation efficiency, and effectively extends the service life of the drill pipe. They are widely used in oil and gas drilling, geothermal wells, water wells, and other complex drilling operations.
Non-Magnetic Drill Collar
OUR SERVICE
We offers a wealth of product support resources, including a range of technical and downloadable product manuals to product certifications.
Customization Product Catalog
We can customize high-performance drill pipe assemblies of various sizes according to customer needs.
Contact Us
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052260, East of Beikou, Yingli Town, Jinzhou County, Shijiazhuang City, Hebei Provice, China.
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