Pioneering Spirit has efficiently accomplished her third and closing decommissioning job of 2020, single-lift elimination of the North Sea’s 14,200 t Ninian Northern topsides.
Just days after delivering the Tyra flare jackets to Sagro’s recycling yard in Vlissingen, the Netherlands, the world’s largest building vessel was again north of the Shetland Islands pulling extra decommissioned amenities out of the North Sea.
Completed Friday morning, 28 August, the elimination operation took 2 hours, from connecting the vessel’s topsides lifting beams to the platform to the carry, making certain environmental emissions from the elimination actions have been stored to a minimal with the environment friendly vessel methods.
Safely on board after a 7-second “fast-lift”, the previous drilling and manufacturing topsides have been heading to the Peterson-Veolia yard in Dales Voe, Shetland, for recycling. The facility will goal over a 97% reuse/recycle ratio and create quite a few jobs over the interval the topsides is dismantled.
The carry concluded a busy 2020 heavy carry season, throughout which Pioneering Spirit eliminated greater than 57,000 tonnes of metal – equal to eight Eiffel Towers! – out of the North Sea’s Brent oil and Tyra fuel fields, and delivered the buildings to yards in Denmark, the Netherlands and the UK.
The Ninian Central Platform is an oil platform within the North Sea. When constructed in Loch Kishorn, Scotland in 1978 the 600,000 tonne platform was the world’s largest man-made movable object earlier than being towed to its present place and sunk to the ocean ground.
It is a round concrete gravity construction, 140 m in diameter at its base, with seven concentric partitions of stepped heights intersected by radial partitions at 45-degree angles. A 14 m vast central shaft is surrounded by a breakwater wall, 45 m in diameter and 1.6 m thick pierced with 1.5m diameter holes. Between these two partitions drill slots are organized for drilling as much as 42 wells
The Ninian discipline lies in United Kingdom Continental Shelf (UKCS) Blocks three/2, three/three, three/7 and three/eight. The reservoir is contained within the marine-deltaic sandstones of the Middle Jurassic Brent Group. There have been estimated to be 2,920 million barrels (464 million cubic metres) of oil rather than which 35 to 40 % was regarded as recoverable. Ninian oil is a paraffinic-naphthenic kind with an API gravity of 36°.
Ninian Central operates along side the Ninian Southern and Ninian Northern platforms. First oil was produced from the sphere in December 1978.[3] Production reached a peak of 315,000 barrels (50,100 m3) of oil per day in the summertime of 1982. At the tip of 1988 over 811 million bbl (129 million m3) had been produced.[
(Source and picture: Allseas)


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