Earlier this month, Heerema Marine Contractors’ large semi-submersible crane vessel (SSCV) Sleipnir accomplished its first decommissioning marketing campaign of the season.
It was a novel mission, as Heerema’s Champion put in the identical modules for ConocoPhillips on the Greater Ekofisk Field within the 1970s, Heerema mentioned in an announcement on Tuesday.
Now, nearly fifty years later, Sleipnir has returned to finish the journey.
The decommissioning of the Ekofisk 2/4A platform is the ultimate stage of an vital story in Norway’s power historical past. The everlasting manufacturing platform was the oldest on the Norwegian shelf when oil manufacturing resulted in September 2013.
Now, the Ekofisk 2/4A platform might be recycled as much as 99% on the AFEBV decommissioning web site in Vats, Norway.
This topsides marketing campaign entailed Engineering, Preparation, Removal, and Disposal/Recycling of 5 modules, a crane increase, and a burner increase inside the Greater Ekofisk Field.
Heerema additionally developed a devoted subsea excavator to organize the jacket for removing later this season by Sleipnir.
According to Heerema, it was notably applicable that Sleipnir would carry out the decommissioning work as it’s the world’s most sustainable SSCV.
Using Sleipnir made an already environmentally pleasant technique of eradicating retired platforms from our seas as sustainable as attainable, the corporate defined.
During the mission, Sleipnir ran on LNG when subsequent to the platform.
Heerema may even be engaged on the removing of the platform’s jackets later this yr.
Nova module set up
Earlier this month Sleipnir transported and put in the Nova topside module on the Gjøa platform within the North Sea.
The large vessel picked up the 740mT module from a barge exterior Stavanger, Norway, and transported it to Neptune Energy’s operated Gjøa platform. Installation was accomplished inside three hours.
The Nova module might be used for the tie-back of the Wintershall Dea operated Nova area, positioned about 120 kilometres northwest of Bergen, with a water depth of 370 meters.
As was the case with the ConocoPhillips decom mission, Sleipnir ran on LNG throughout Nova module set up to scale back carbon emissions.
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