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.
GUL Subsea - 6-10inch
GUL Subsea - 6-10inch
GUL Subsea - 16-20inch (1)
GUL Subsea - 16-20inch (1)
GUL Subsea - 16-20inch (2)
GUL Subsea - 16-20inch (2)
gulsubsea-diverring
Available Versions:
ROV Deployed
A Subsea G4mini is mounted on the ROV. A hydraulic connection is used for opening and closing the ring. The test is carried out from the ROV control room.
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
The test is controlled via an umbilical from a topside interface box to the Wavemaker instrument. The rings are installed on a clean section of pipe by 1 or 2 divers using a mechanical clamping mechanism.
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) |