Green light for Apache’s Nevis decommissioning plan

Apache Corporation has received approval from the UK authorities for its decommissioning program for the Nevis South field installations located in the UK North Sea.

Beryl Alpha © Apache Corporation

Apache Corporation submitted its draft decommissioning program for the Nevis South field installations located in the UK North Sea to the UK authorities back in March 2019, and received approval on June 6, 2019.

The decommissioning program is for the removal of the Nevis South field subsea wellhead protection structure (WHPS) on well N11 in block 9/13a. The Nevis N11 protection structure is located to the west of the Beryl Alpha platform within the Nevis South Drill Center in ~105m water depth.

The decommissioning of the WHPS is being treated as a standalone project as part of the Garten installation campaign, which will be managed by Apache. Subsea 7 has been contracted to undertake this work scope under an existing service framework agreement. The pipelines and stabilization materials are not being decommissioned at this time.

The protective structure has been lifted off the wellhead and moved to a designated wet store location. The structure will then be recovered and returned to shore for reuse, unless the condition is found to preclude refurbishment in which case it will be recycled.

The WHPS removal is planned to be performed between 2Q and 4Q 2019.


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