Offshore Inline Inspection

Complete solutions for deepwater reliability

The Problem

Offshore pipeline inspections represent a unique challenge in comparison to their onshore counterparts. Pipelines offshore operate in some of the harshest environments on the planet – making verification of pipeline inspection results prohibitive in respect to practicality and cost.The reliability and accuracy of results is therefore of paramount concern.

The Solution

Data quality and first-run success represent the founding principles of NDT Global. By providing highly accurate results, in the first instance, our customers can have confidence in the inspection data to make fully informed decisions on future interventions - be that extending the inspection interval or making required repairs while, at the same time, also limit the requirement for costly verification's. Our latest generation of tools represent a step change in pipeline inspection accuracy and can significantly reduce overall project cost.

EVO Series UC

Circumferential cracking defects can be addressed with ILI tools utilizing ultrasonic shear wave technology.

To accurately identify circumferential cracking, the diffracted shear wave signal travels in the pipe wall by an angle of 45° and is reflected either by an external or internal flaw. Based on the individual pattern of the reflected signal algorithms, experienced data analysts can read and translate the information into flaw properties, e.g. length, width, type and depth.

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EVO Series UMP

Pinhole and especially embedded pinhole defects as a significant risk factor in their integrity management programs. Higher-resolution inspection of features identifies the true deepest point of a pinhole morphology within a larger area of corrosion with an overall shallower depth.

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Wax-Rich Tool

Significant amounts of wax or paraffin deposits can still be in a line, even after lengthy and careful cleaning. Issues such as the pour point can lead to wax falling out of the oil, immediately after a cleaning run, making it next to impossible to achieve a completely clean wall prior to launching an intelligent inspection tool.

To overcome these issues, NDT Global offers an intelligent survey using a wax configured ultrasonic inspection tool, specifically developed for pipelines with high wax content.

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EVO Series UCC

Circumferential cracking defects can be addressed with ILI tools utilizing ultrasonic shear wave technology.

To accurately identify circumferential cracking, the diffracted shear wave signal travels in the pipe wall by an angle of 45° and is reflected either by an external or internal flaw. Based on the individual pattern of the reflected signal algorithms, experienced data analysts can read and translate the information into flaw properties, e.g. length, width, type and depth.

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Our Technology

NDT Global recently introduced the latest generation of UT tools - Evo Series 1.0. This generation offers inspection velocities of up to 4 m/s (9 mph). These high speed tools overcome reduction of flow rates for intelligent inspection runs.

Case Studies

BP: A Custom Engineered Solution for Offshore Success

BP Angola needed a highly accurate baseline inline inspection (ILI) of the 36 km (22 mile)…

Statoil: Custom Solution for an Extreme Subsea Pipeline

Statoil required a baseline survey of its new Polarled gas pipeline as part of the…

Inspecting a Dual-Diameter Pipeline in a Single Run

A North American customer required an inspection of a dual-diameter pipeline owned and…

Testimonial

  • Thanks to the NDT Global Engineering 'A Team', and work by the Sunbury Flowlines team, a plan was conceived to put the pig on a diet.

    BP Angola

  • NDT showed a profound expertise and reliability. NDT impressed with their quality of service provided through their personnel as well as the outstanding performance of the inspection tool providing excellent data. The final reports were delivered in due time and with excellent quality. Based on this experience and the good business relationship, we are happy to recommend NDT Global for the inline inspection services.

    Open Grid Europe

  • All work was performed in accordance with Statoil's specifications and to complete satisfaction. The data results were precise and reliable and perfectly reflected the pipeline conditions. During the last years NDT has been an excellent cooperation partner for us in every respect. Precision and reliability are the cornerstones of their work.

    Statoil