Allseas’ Pioneering Spirit recently set a new record for heavy lifting after successfully removing the topsides from the Yme mobile offshore production unit (MOPU) offshore Norway, its first commercial project.
The removal of the 135,000-tonne topsides by the giant platform removal and installation vessel marked the biggest ever offshore lift, lasting only 60 seconds.
The Dutch company’s vessel’s next project will entail the removal of the topside of the Brent Delta platform as part of the decommissioning of the UK North Sea oil and gas field.
Pioneering Spirit – The Biggest Ever Offshore Heavy Lift
After removing the topsides from the Yme platform, the unit proceeded to cutting the legs off the facility to enable the topsides to be lifted off.
The topsides were then transported to the Lutelandet dismantling yard, where the rig is being scrapped.
This operation will thus be followed by work on the Brent Delta topsides, which will involve lifting 24,200-tonne topsides in a single lift, the heaviest to be carried out at sea.
This continues to mark a new era in decommissioning, where topsides were traditionally taken apart piece by piece.
Allseas is also contracted to lift the other three Brent topsides, still to be scheduled, as well as installing Statoil’s Johan Sverdrup topsides offshore Norway.
A Record-Breaking Installation and Removal Vessel
The Pioneering Spirit is a dynamically-positioned vessel for single-lift installation and removal of large offshore oil and gas platforms, as well as the installation of oil and gas pipelines.
The US$2.7 billion (£2.12 billion) vessel is 382 metres (1,253 feet) long and 124 metres (406.8 feet) wide and was built to lift topsides weighing up to 48,000 tonnes and jackets with up to 25,000 tonnes.
The vessel was built in South Korea and installed in the Netherlands and was due to start working in the summer of 2015 and proceed to the Brent Delta before the end of this year, but this has been postponed due to delays in the commissioning of the lifting arms.