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Mar 05, 2026

Magnetic Thickness Tool (MTT): High-Precision Corrosion Detection and Wall Thickness Measurement Solution for Oil Casing

In the middle-to-late stages of oil and gas field development, oil casing corrosion and wall thickness reduction are the primary risk factors threatening wellbore integrity and causing unplanned production shutdowns. As a professional manufacturer of petroleum logging instruments, we provide you with the Magnetic Thickness Tool (MTT) designed based on advanced electromagnetic principles. This tool aims to overcome the limitations of traditional mechanical contact-based measurement methods. Through non-contact, high-precision measurement, it accurately evaluates the remaining wall thickness and corrosion conditions of tubular strings, empowering operators to make informed decisions regarding workover operations and corrosion protection strategies.

 

The electromagnetic corrosion measurement tool with an OD of 43mm can operate through the oil pipe and has the unique ability to simultaneously inspect the oil pipe and the 3-4 layers of casing behind it. The new generation of electromagnetic thickness damage logging tool can evaluate the quantitative thickness measurement and damage detection of up to four concentric tubes.

 

It is composed of a set of short ("C") and a set of long ("A") probes. It operates on the principle of transient electromagnetic method. The transmitting probe transmits high-energy electromagnetic pulses to the surrounding pipeline. The pipeline records the composite attenuation of the eddy current signal based on the physical principle of pulsed vortex (PEC), and these signals are finally used to to evaluate pipe conditions.

 
A-One Oil Magnetic Thickness Tool (MTT)
 

A cased-hole logging solutions provider.

Magnetic Thickness Tool MTT 1
Magnetic Thickness Tool MTT 2
Magnetic Thickness Tool MTT

 

 

Core Product Advantages: Data-Driven Reliability

 

◆ High-Resolution Thickness Quantification

It features exceptionally high vertical resolution (typically achieving 0.1 ft or better), capable of identifying minute, localized corrosion defects. Its wall thickness measurement accuracy is calibrated against surface simulation well standards, with errors controlled within industry-accepted tolerances. It can clearly delineate different wall thickness zones (such as the transition between upset sections and pipe body), providing reliable input for remaining strength calculations.

◆ Ideal Complement to Multi-Arm Caliper Tools

It is often deployed in combination with multi-arm caliper tools. While calipers excel at measuring internal geometry, they cannot penetrate wax or scale deposits to detect external wall corrosion or total wall thickness. Leveraging the penetrating characteristics of electromagnetic waves, the MTT operates unaffected by internal fluid media or light scale buildup, delivering a comprehensive "health report" of the tubular's full wall thickness-filling the data blind spots of caliper tools.

◆ Robust Engineering Design with Temperature and Pressure Resistance

Engineered for harsh downhole environments, the pressure housing utilizes high-strength alloy steel with rigorous heat treatment processes to enhance impact resistance. The electronic circuitry incorporates multi-layer shielding design to effectively counter electromagnetic interference in high-temperature, high-pressure downhole conditions. All units undergo high-temperature aging tests and pressure chamber calibration prior to delivery, ensuring stable signal transmission in deep well complex environments.

 

Typical Application Scenarios

 

The Magnetic Thickness Tool (MTT) is widely deployed in the following operational scenarios, helping operators mitigate operational risks:

◆ Casing Corrosion Detection-Evaluates the remaining service life of casing in aging wells to determine whether liner patching or squeeze cementing operations are required.

◆ Tubing Wear Monitoring-Rapidly scans tubing wall thickness prior to pulling out of hole, identifying wall thickness reduction caused by sucker rod eccentric wear, thereby preventing parting incidents.

◆ Operation Effectiveness Evaluation-Inspects tubular strings following acidizing or hydraulic fracturing operations to assess the impact of these processes on tubular integrity.

 

Why Choose Us as Your Partner?

 

We provide not only hardware equipment, but also comprehensive one-stop technical support services. Our team of senior logging interpretation specialists stands ready to assist you with data interpretation challenges in complex well conditions. Furthermore, we are committed to long-term spare parts supply and technical training support for all instruments sold, ensuring the long-term value retention of your assets.

 

Conclusion of Magnetic Thickness Tool (MTT)

 

In the field of casing damage detection, data precision is the foundation of decision-making. Our Magnetic Thickness Tool (MTT) is more than just a downhole instrument-it is your scientific tool for quantifying wellbore risks and optimizing production interventions. From raw material inspection to final simulated condition testing, we adhere to the standards of data traceability, verifiable accuracy, and environmental adaptability to deliver reliable casing integrity solutions to customers worldwide.

 

Contact us at info@a-oneoil.com today to learn more about our Magnetic Thickness Tool (MTT) and request a project solution. Or to inquire about product procurement matters. Our professional team will provide you with detailed answers and help you solve any technical problems you encounter in oil and gas exploration and engineering operations.

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