Pipeline inspection (ili)

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Pipeline inspection tool or PIGS are devices that are inserted into and travel throughout the length of a pipeline driven by a product flow. They were originally developed to remove deposits which could obstruct or retard flow through a pipeline. Today pigs are used during all phases in the life of a pipeline for many different reasons.


In Line Inspection provides information on the condition of the pipe and/or its contents. With few exceptions, the In Line Inspection Tool itself is simply the tool which gathers the data, which is then analyzed by the engineers and technicians to determine and report on the condition of the line.

Although the two most common requirements are for geometry/diameter measurement and for metal-loss/corrosion devices, the information which can be provided by these intelligent pigs covers a much wider range of inspection and troubleshooting needs which include:

  • Diameter/geometry measurements;
  • Curvature monitoring;
  • Pipeline profile;      
  • Temperature/pressure recording;
  • Bend measurement;
  • Metal-loss/corrosion detection;
  • Photographic  inspection;
  • Crack detection;
  • Wax deposition measurement;
  • Leak  detection;
  • Product sampling, and;
  • Mapping.
We provide the wide range advanced intelligent technology and services in pipeline inspection, integrity and repair process.  

Our advantages:

  • Engineering team (with vast field experience) ready to mobilize anywhere internationally with short notice, especially for emergency cases. Capable to find an immediate solution on site.
  • We collaborate with Russian largest pipeline operators (Transneft) & their R&D institute.
  • After sales service, team is always available to recommend customer a solution that works.
  • ILI tools available all sizes, MFL, TFI & UT.
  • Flexibility in terms of paperwork  processes and mobilization.

Cleaning pigs:

We offer to our customers the most up to date pipeline cleaning technology and services. Our engineering team will study the customer requirements and asses the type of application and offer a solution to all types of oil and gas pipelines.

Multichannel geometry tool:

Multichannel Geometry tool PRN™ was designed in order to inspect the geometry of the pipelines and secure further free passage of any other ILI tool. It is used for the cross section and bend radius measurement of the pipeline of various diameters. This caliper tool allows precise geometric recognition and circumferential positioning of defects (dents, ovalities, wrinkles, buckles, combined defects and pipeline features (girth welds and bend radii). Built-in inertial mapping unit provides precise synchronization with GPS coordinates and reliable three-dimensional pipeline positioning and defect location, as well as fixing changes of the pipeline positioning in the ground with the time. Highly sophisticated software used for the inspection data processing QscanUltimate™ makes it possible to obtain in-situ an immediate report in two hours after the inspection run of the geometry tool.


MFL in-line magnetic tool is an in-line inspection tool with longitudinal magnetizing of pipeline walls designed for detecting defects and features in walls and girth welds. Application of high resolution magnetic flux leakage (MFL) in-line inspection tool enables to detect all pipeline defects of circumferential orientation, such as general corrosion, pitting corrosion, circumferential cracks, especially cracks in girth welds and other defects of transverse orientation. Magnetic Flux Leakage ILI Tool MDscan™system is very efficient in discrimination of external and internal pipeline defects. High-Resolution MFL Inspection Tools are completely self-contained, free swimming units operating on the principle of Magnetic Flux Leakage (MFL). Pipe wall imperfections or metal loss in a magnetized section of pipe will cause some of the magnetism to "leak" outside the pipe wall in the vicinity of defects or imperfections. Sensors on the instrumented inspection tool can detect these leakage fields as it moves through the

TFI Inspection tool:

TFI tool (Transverse Field Inspection) technology is also one of magnetic flux leakage based tools. However the tool induces a flux field in circumferential direction and that is due to the transverse installation of magnetizing sections.  The magnetizer system is designed to guarantee detection and sizing of metal loss anomalies, same as MFL tools, however it is also particularly developed for measurement of longitudinally oriented anomalies such ad longitudinal weld anomalies tunnel corrosion. TFI tools also show good performance in sizing and detection of some types of cracks like anomalies. As a result, TFI technology ensure detection and sizing of certain anomalies that conventional axial MFL tools have difficulty with, but on the contrary, TFI's capabilities on circumferentially oriented anomalies are more limited.

Ultrasonic tool UT WM/CD.

The high resolution ultrasonic tools are designed for detecting and sizing anomalies and defects, including metal loss, cracks or cracks-like features.

  • WM tool’s diameter range: 6- 48 inch
  • CD tool’s diameter range: 6- 16 inch
  • Pipe wall thickness range: 4-33 mm
  • Max length of the pipeline to be inspected at one run: 260km
  • Max. operational pressure: 14 MPa

Detect location accuracy:

- Accuracy of defect distance from the section beginning:


- Accuracy of circumferential position: ±6°

Combo tools.


The combined magnetic tool utilizes both circumferential and longitudinal pipe magnetization principle which gives the possibility to detect and accurately measure both circumferential and axial defects on pipe body as well as defects on the welds. MFL+TFI is optimized in order to detect a wide range of pipeanomalies, such as: Longitudinal and girth weld defects (lack of fusion, voids, cracks); Cross cracks of the pipe wall; Internal and external metal loss of the pipe wall. Unlike ultrasonic tools are capable of detecting defects only in the clean pipe, the magnetic tools do not necessarily require absence of the debris in the pipe. Thus, magnetic tools can detect and size defects where UT has limitations, for example in the newly constructed pipes as well as in the pipes with considerable amount of wax and other deposits. Magnetic tools are also effective to detect tapping and small corrosion pits.


 Combined MFL or TFI  + WM + CD Detection Tool

Combined MFL/UT tool can provide both magnetic (MFL) and ultrasonic (WM+CD) inspection of the pipe at single tool run. Such technology creates a synergy of both inspection methods and provides the most comprehensive detection and sizing of both circumferential and axial metal loss defects and cracks. The combined inspection method enables to achieve an enhanced performance in defect detection and sizing one cases where one of the methods have certain limitations and the other one, on contrary, is very effective. The combination tool is normally ran to capture more defects with multiple methods to avoid more tool run which sometimes operator do not wish to do.

 This combo tool is capable to detect the following defects:
  • Metal loss defects of the internal and external pipe wall
  • Scratches and cracks on the pipe body
  • Wrinkles and buckles
  • Dents, grindings and gouging
  • Girth and longitudinal weld defects

Emat tool is capable to perform combined magnetic and ultrasonic in-line inspections of gas& oil pipelines on the basis of electromagnetic method. Emat is  applicable for:

- Diagnostics and monitoring of corrosion condition of pipelines;

- Detection of longitudinal extra small defects;

- Pipe wall thickness measurement;

- Pipeline coating inspection

- Detection of pipeline stress zones.

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