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Home  »  case studies • Oil and Gas   »   Offshore Caisson Legs Protection
December 14, 2019

Offshore Caisson Legs Protection

Challenge

A major producer of oil and gas from the offshore areas of Abu Dhabi in the United Arab Emirates operates multiple barge-type offshore platforms constructed on caisson legs. Previously, internals of the platform caisson legs were left uncoated and filled with biocide-treated water and protected using suspended sacrificial anodes. Over time the anodes depleted and an alternative environmentally friendly method of protecting caisson legs was recommended.

Application
Application VpCI®-337 BD was sprayed in the caisson legs to stop bio-growth, VpCI®-609 S was then fogged in to the void space to counter dead volume of water at the bottom. Custom manufactured strips of Cortec’s Ecopouch® were then suspended from the top side for additional protection.

Conclusion
After two years, the pilot was deemed a success and Cortec® VpCI® was proven to effectively mitigate corrosion in an offshore environment by reducing the corrosion rate in the protected leg Vs the control by 584%.

Date October 2013

Distributor Kanoo Group

Location Abu Dhabi, UAE

Products:

  • VpCI®-337 BD
  • VpCI®-609 S
  • EcoPouch®
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