MANSLAGT Z1 Platform Removal

Marine Operations and Decommissioning

The MANSLAGT Z1 Platform has been successfully removed from estuary mouth of the river Ems. Within the second project stage the topsides and the jacket have been decommissioned in two steps. The lifting, transport on the hook to shore and set-down on the quay of disposal yard have been performed by sheer-leg Barge “MATADOR 3”. Structural, in-place and rigging analyses for the platform as well as hydrostatic and mooring calculations for the crane barge have been conducted by Overdick.

The Manslagt Gas Production Platform was built in 1993. After platform shut down in 2009 the platform removal was decided in 2012.
The location of the platform in ecological protective area required special solutions for environmental protection.

Location: German North Sea

Project Details

Client: Colcrete-von Essen, 2013
Keywords: Decomissioning, Heavy lift engineering, Hydrostatics, In-place analyses, Lift-out, Motion Analysis, offshore oil and gas, platform, platform removals, Removal

Characteristics: LAT: 11 m
Jacket Weight: 400 t
Topsides Weight: 1900 t

Engineering Services: Abandonment and Removal Engineering
Heavy Lift Analysis and Design
Removal Concept
Structural Verification for Removal Operation