Sub-Sea GWT Inspection

With the experience gained from many inspections in both the North Sea and the Gulf of Mexico, GUL’s Sub‑Sea GWT equipment has evolved into a reliable modular system. GUL Sub‑Sea rings are easily adjusted to fit different pipe sizes and are available for both ROV or diver deployment.

The advantages of using the Sub‑Sea rings include:

  • Screening unpiggable sections of line for internal or external corrosion/erosion.
  • Screening under weight coat and insulation with minimal cleaning and excavation.
  • The on-site analysis allows the ROV to perform follow-up indications.

Available Versions:

ROV Deployed

Specifications:

Number of Channels 12
Nominal Pipe Sizes 6" to 10" (DN 150 to 250)
Operating Depth 3000m max.
Compatibility Uses Ethernet connected Subsea G4Mini

Diver Deployed

Specifications:

Number of Channels 12
Nominal Pipe Sizes 6" to 26" (DN 150 to 650)
Operating Depth Any diver depth
Compatibility Umbilical connection to Subsea G4Mini (> 50m) or
topside Wavemaker® (< 50m)