Case Studies 

Operational deployments

TotalEnergies CLOV3 — pipeline walking

OIS qualified and delivered continuous pipeline walking monitoring systems for TotalEnergies CLOV3 in Angola.

The system supports a "wait and see" integrity strategy by measuring pipeline movement before committing to mitigation. The CLOV3 system is described in OMAE 2026 materials as a world-first continuous pipeline walking monitoring system.

The delivered design provides 10 mm resolution, 16-year battery life and a 1,500 m depth rating.

An uprated design is available with a 3,000 m depth rating, 1.25 mm resolution and up to 30-year battery life.

Lattice E-Field — ROV-mounted corrosion and CP surveying

OIS demonstrated Lattice E-Field on ROVs in Bergen with Fugro and during the a UK sector pipeline inspection campaign with DeepOcean. These deployments demonstrated vehicle integration, subsea electric-field measurement and recovery of survey information.

In Bergen, three devices recorded low-noise measurements while the powered ROV was submerged, with distinct electric-field features during harbour operations and a wreck dive. At Adura, Lattice E-Field collected sustained measurements along the pipeline, showing recurring anode-like signatures and local changes in the measured field.

Lattice E-Field brings continuous cathodic-protection sensing to small inspection ROVs and AUVs. Its compact, non-metallic housing, neutral buoyancy and low power demand minimise the sensor's submerged payload and power burden. Ethernet integration and live survey displays help operators add electric-field measurements to inspections, extend coverage between contact measurements and target locations for closer investigation.

Adura pipeline inspection: recorded electric-field signatures consistent with anode passes, with smaller local changes indicating locations for closer investigation.