Optopig Pipeline Inspection Tool

Brief Description

The imaging resolution is typically 1 X 1 mm. The minimum metal loss depth that can be detected is 1 mm over an area of 5 X 5 mm. The system will withstand pressures up to more than 200 bars. The maximum inspection speed while maintaining 1 mm longitudinal resolution is 5 m/s.

Optopig Advantages

• Easy interpretation of the data: "What you see is what you have..."
• Synchronised images and profiles (3D data) from all parts of the pipe
• Inspection speed not limited by inspection technology (no currents induced in the pipe that influences the measurements, ref. MFL). Gas production can be maintained at a higher level.
• Contact less technology
  • no sensor lift off (ref. MFL)
  • no damages induced by the "brushes" (ref. MFL)
  • no need for a coupling fluid (ref. ultra sound devices)
• Multidimensional capability built in, can cover 16-42", 10-20"
• No problems with remanent magnetisation
• When valid data exists there is no question about how to interpret the signal from a detected cavity
• The actual radius at the location is measured, and not the relative depth of a cavity in a sediment in the pipe
• No influence from the properties of the material (like different permeability for different alloys)
• Works perfectly well on non magnetic pipes
• Typically lower weight of tool (76 kg) and complete unit with carrier (1.3 tons @ 42", ref MFL 6.7 tons)
• Use of automatic image processing and pipe feature classification systems possible (under development)
• No need for an umbilical, i.e. an autonomous system

Limitations

• Will not measure cavities on the outside of the pipe
• Will only depict and measure pipe features visible on the surface
• Requires optical transmission through fluid (a certain level of visibility)

The picture above shows the Optopig tool mounted in a carrier for 42 inch pipelines.

Pipeline Dimensions Covered

More Information