Installation of buoyancy modules from a vessel

Challenge

• Install and de-water nine buoyancy modules to the mooring lines of a floating oil production facility​
• 3,000 feet water depth​
• Perform the operation from a DP vessel

Solution

• Halliburton designed a complete coiled tubing (CT) package with 2-3/8” CT downline able to deploy at 3000 feet depth​
• A ROV was used to enable the tie-ins with each of the buoyancy modules
• Nitrogen equipment set up to pump from surface via the downline to displace the water

Result

• Successfully installed and de-watered all nine buoyancy modules​
• The CT downline solution has been proven as a suitable method for de-watering deep water buoyancy modules from a vessel