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Over the Line Surveys

The Arch OTL System’s Cutting-Edge Technology in Action

Our Arch Over-the-Line (OTL) system stands as a cutting-edge, fully integrated solution meticulously crafted and rigorously tested to execute diverse surveys, aiming to assess the efficacy of corrosion protection and scrutinize the integrity of pipeline coatings.

This survey system is a pinnacle of precision, accuracy, and operational ease, constituting its core competencies. Developed from the ground up, Arch emerges as a lightweight, compact system, placing a strong emphasis on adhering to cathodic protection principles.

Unmatched Versatility

the Arch OTL system excels in capturing an array of critical parameters, including:

Following oilfield incidents, Corrosion Technologies deploys environmental safety measures designed to mitigate the impact on ecosystems. From accurate spill reporting to precise disaster management planning, our reactive approach is geared towards minimizing environmental consequences after the event.

AC Voltage Gradient (ACVG)

Unveiling the distribution of AC voltage gradients along the pipeline route.

AC Current Attenuation (ACCA)

Proficiently measuring the attenuation of AC currents to assess potential interference.

Proficiently measuring the attenuation of AC currents to assess potential interference.

Close Interval Surveys (CIS)

Conducting close proximity assessments to scrutinize coating conditions and identify potential trouble spots.

Depth of Cover (DOC)

Providing crucial insights into the depth of cover to evaluate protective measures.

Sub-Meter GPS (SMGPS)

Leveraging sub-meter GPS technology for precise spatial location data.

Elevation Profile (EP)

Delivering a comprehensive elevation profile to enhance the understanding of terrain variations.

Elevation Profile (EP)

Delivering a comprehensive elevation profile to enhance the understanding of terrain variations.

This sophisticated system doesn't merely stop at its existing capabilities; it offers the flexibility for expansion with multiple ports available for integrating additional functionalities such as Sonar, Leak Detection, and more, tailoring its capabilities as per specific requirements.


The software driving the Arch OTL system has not only been conceptualized meticulously but has also withstood the rigors of extensive field testing, solidifying its reliability and performance in real-world scenarios.

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