Project experience
30 Years of cathodic protection, inspection and consulting projects around the world
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Tabu, Guntong, Semangkok
RetroSleds™ and RetroClamps™ used to replace depleted anodes discovered during a pipeline survey campaign in Malaysia.
Key project stats
- 3 pipelines
- Installation: ROV
- Install time: 4 days
8 inch pipeline
Deepwater was contracted by Chevron to provide cathodic protection (CP) retrofit materials for their 8” wet oil pipeline running from their fixed jacked to shore.
Key project stats
- Installation: Divers
- Offshore time: 30 hours
- Length: 4.5 km
- As left: -0.998V vs Ag/AgCl
24 inch methanol pipeline
Concrete mattresses with integral anodes (RetroMat™) used to retrofit new cathodic protection for a pipeline in Equatorial Guinea.
Key project stats
- Local assembly
- Offshore time: 3 days
- Length: 2 km
- As left: -1.025V vs Ag/AgC
Alba Field
Pipeline anode retrofit of an offshore process pipeline in Equatorial Guinea's Alba Field with low cathodic protection potentials.
Key project stats
- Installation: ROV
- Depth: 200 ft
- Sacrificial anode sled
Forties field flowlines
Anode retrofit for the in-field flowlines on the Forties field in the North Sea
Key project stats
- Install time: 60 hours
- Depth: 106 m
Arnold / Oyster fields
New cathodic protection anodes installed on two deep-water fields in just 73 hours, including well trees, flow line manifolds, umbilical termination units, and flow lines.
Key project stats
- Installation: ROV
- Install time: 72 hours
- Depth: 775 ft / 1,750 ft
Tubular Bells
Sacrificial anode retrofit for two pipelines located in the Mississippi Canyon area of the Gulf of Mexico.
Key project stats
- Water depth: 4,500 ft
- Installation: ROV
Brent pipeline
Deepwater retrofits major North Sea pipeline using RetroMat™ and RetroClamp™ to provide pipeline cathodic protection.
Key project stats
- 12 km pipeline
- Conctrete weight coat
- 15 year life extension
Pipeline Excavation Tool (PET™) installs RetroClamp™
Pipeline Excavation Tool (PET™) is used to excavate a shallow buried underwater pipeline in south Louisiana to install a RetroClamp™ for attaching leads to a CP test station.
Key project stats
- Entire operation done from topside - no divers
- Took two hours to excavate and install RetroClamp™
- Whole operation including setup and demob took one day
CP jumper system installed on pipeline
The Cathodic Protection jumper system provides a CP bridge across the insulation joint installed on the 12” Cobia pipeline extension in the MP-290 field near the mouth of the Mississippi River.
Key project stats
- Two 12” RetroClamps™ were installed
- Pair of 4/0 cables provide continuity
- ROV installation
Four RetroSleds™ installed on two pipelines
Deepwater Corrosion Services was contracted by Stone Energy to supply and oversee the installation of four RetroSled™ anode sleds on to two subsea pipelines in the Gulf of Mexico.
Key project stats
- Installed from jack-up boat
- Divers helped place the sleds
- In Gulf of Mexico, south of Louisiana
RetroSled™ installed on subsea pipeline
Deepwater Corrosion Services was contracted to provide a RetroSled™ anode sled and a RetroClamp™ to provide CP for a 6” subsea pipeline.
Key project stats
- Pipeline near Renaissance MP 76 platform
- RetroSled™ used to provide CP
- RetroClamp™ provides electrical connection
- Located in the Gulf of Mexico
Arabian Gulf pipeline CP retrofit
25 RetroClamps™ were utilized to electrically connect retrofit anode sleds on an 8-inch pipeline.
Key project stats
- 25 RetroClamps™ deployed
- 8-inch pipeline from wellhead platform
- Used to electrically connect anode sleds
64 RetroLinks™ installed on pipelines
64 RetroLinks™ were installed on three Gulf of Mexico pipelines using 26 RetroClamps™ to electrically connect them.
Key project stats
- 64 RetroLinks™ used
- 26 RetroClamps™ used to attach links
- Anode strings laid on seabed
PET™ pipeline excavation and clamp installation
Deepwater was contracted to use the Pipeline Excavation Tool to place two large RetroClamps™ on two shallow-water pipelines buried in mud.
Key project stats
- 48" and 30" pipelines under 4' to 6' of mud
- PET™ used to excavate pipes
- Two RetroClamps™ installed
- Excavation time: 2 hours