Offshore staff

BERGEN, Norway – Halfwave has won four contracts for subsea pipeline inspections involving use of its ROV-mounted Artemis tool.

This employs Acoustic Resonance Technology (ART) to conduct wall thickness inspections and has been deployed this year in the Gulf of Mexico to inspect an unpiggable 8-in. coated pipeline in 2,400 m (7,874 ft) water depth.

Other awards this year are from Aker BP, for inspecting a 12-in. piggyback pipeline offshore Norway.

An Australian operator will use the system to inspect a concrete-coated pipeline. In addition, Artemis will perform a re-inspection of 6-in., 10-in. and 14-in. subsea flowlines for DOF Subsea offshore Australia. In this case, the data will be used to extend the field’s life.

Halfwave claims the acoustic signals of its system transmit through coatings and surface deposits more effectively than conventional non-destructive inspection methods.

The sensor design allows for a full circumferential scan in less than 15 minutes with parallel live analysis.