Valhall PCP Platform Removal

Engineering, preparation, removal & disposal of the original Valhall production and compression (PCP) platform from the Norwegian North Sea.

Company : Aker BP

Location : North Sea, 280 km off the Norwegian Coast

Water depth: 70 metres

14,000-tonne topsides removal in 2022

9,500-tonne jacket removal in 2025

Removal of decommissioned facilities from live field

Scope of work

Engineering, preparation, removal & disposal (EPRD) of 14,000-tonne production & compression (PCP) topsides, 9,500-tonne jacket & connecting bridges
Pre-lift preparation work (incl. underdeck scaffolding & removal of obstructions under cellar deck for access to lift points, installation of shear brackets and uplift restrainers on legs, cutting & removal of caissons, removal of bridge obstructions, installation of bridge pivot guide, NDT critical joints), installation of lift points ~1m above water level
Cutting of grouted platform legs
Transfer of facilities/jacket to disposal yard (Stord, Norway)
Vertical load-in onto quay (Stord Norway)

Offshore preparations carried out in both “cold” and “live” oil & gas platform environments in Valhall field
Removal of decommissioned facilities from live field
Tight vertical clearances between Pioneering Spirit & topsides during removal due to field subsidence
Very small air gap between water level and actual field weld for lift points on jacket
Small horizontal clearances between TLS & platform (small platform results in lift points close to legs and caissons)
Pre-lift activities and welding close to the splash zone

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