The Goldeneye platform was located in the Central North Sea, in the United Kingdom Continental Shelf, around 100 km northeast of the Aberdeenshire coast. The platform included five platform wells in 120 m water depth with a direct tie-back via the Goldeneye pipeline to the St. Fergus onshore facility. It was operational as a gas-producing field from 2004, and cessation of production was granted in 2011.
The Goldeneye platform was removed using Heerema's reverse installation method, starting with removing the topside in a single lift. After removal, the topside was transferred to Thialf's deck for transportation.
The Goldeneye jacket involved cutting skirt piles using Deco Subsea's internal abrasive water jet cutting techniques at -3 m below the seabed. After which, the jacket was safely removed and remained suspended in Thialf's cranes for transportation to Vats, Norway.
The Goldeneye platform has been safely set down at the AF Environmental Base yard in Vats, Norway, to be dismantled for reuse and recycling. It is anticipated that over 97% of the material will be recycled. Thialf will now undergo yard maintenance, including modifications to the vessel’s A-Frame to enable Thialf to expand its service area and deliver solutions in the Baltic and the Black Sea regions.
Image courtesy of Heerema.
Read the latest issue of Oilfield Technology in full for free: Issue 3 2021
Oilfield Technology’s third issue of 2021 starts with a report from Wood Mackenzie focusing on the upstream industry’s fortunes in Asia-Pacific. The rest of the issue is dedicated to features covering offshore engineering, coiled tubing, frac technology, completion technologies, water management, well placement and much more.
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Read the article online at: https://www.oilfieldtechnology.com/offshore-and-subsea/05102021/heerema-removes-shells-goldeneye-platform-in-uk-north-sea/