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Leak Repair of an X-mas Tree Flange

The installation was a success which resulted in major cost savings!







Project Manager:

Bozidar Sevic

IK’s Subsea Department were tasked with the urgent repair on a X-mas tree flange couple at 820 m water depth, which would aid the critical supply of gas needed for the Philippines power production.

The challenge they faced was a leak in a flange couple with pressure approx. 200 Bar and limited space and accessibility. Initially, the department got engaged to do some studying which resulted in a couple of possible solutions.  One idea was to use a special sealant which only solidifies and seals where there is a drop in pressure.  A clamp would be put around the flange and the sealant would be pushed into the leakage.  Usually this would be done from the inside but there was no way of doing that, it was decided to try this approach.

After a number of trials, tests, different prototypes and FAT Testing, it was time to do the subsea installation. The installation was a success which resulted in major cost savings.  IK was awarded an “Outstanding Achievement Award” from Shell.

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