General information
At the end of the field life, offshore structures have to be decommissioned. Regularly this is a delicate operation, as most of the structures have not been designed to be removed. During the years of operations their structural integrity might have been affected. The challenge of decommissioning has resulted in a number of interesting new decommissioning concepts. On the other hand also extisting crane vessels are used for this operation. Recently MARIN was involved in several heavy-lift projects concerning the removal of fixed structures from North Sea oil and gas fields.
At the end of the field life, offshore structures have to be decommissioned. Regularly this is a delicate operation, as most of the structures have not been designed to be removed. During the years of operations their structural integrity might have been affected. The challenge of decommissioning has resulted in a number of interesting new decommissioning concepts. On the other hand also extisting crane vessels are used for this operation. Recently MARIN was involved in several heavy-lift projects concerning the removal of fixed structures from North Sea oil and gas fields.
Services & Activities
The Offshore Department offers model tests and simulations of decommissioning projects. With the dedicated LIFSIM program it is able to assist the engineering. Complex models and instrumentation are used to test these operations in the basin.
The Trials & Monitoring Department can be involved in decommisioning projects, to measure full-scale loads and motions.
The Offshore Department offers model tests and simulations of decommissioning projects. With the dedicated LIFSIM program it is able to assist the engineering. Complex models and instrumentation are used to test these operations in the basin.
The Trials & Monitoring Department can be involved in decommisioning projects, to measure full-scale loads and motions.
Facilities & Tools
Decommissioning model tests are carried out in the following MARIN facilities :
Decommissioning model tests are carried out in the following MARIN facilities :
- Offshore Basin: DP model tests in combined current, waves and wind
- Shallow Water Basin
- Seakeeping and Manoeuvring Basin: model tests in waves
The following tools are used to study decommissioning :
DIFFRAC: 3-D potential theory including wave diffraction
DRIFTP/DBDRIFT: Second order wave excited (drift) forces
LIFSIM/LIFMOT: Analysis of multi body dyamics and lift operations
DPCAP: Analysis of thruster capacity in dynamic positioning
DPSIM: Low frequency motion simulation of moored and DP vessels
DPSEMI: Dynamic positioning simulation for semi-submersibles
DRIFTP/DBDRIFT: Second order wave excited (drift) forces
LIFSIM/LIFMOT: Analysis of multi body dyamics and lift operations
DPCAP: Analysis of thruster capacity in dynamic positioning
DPSIM: Low frequency motion simulation of moored and DP vessels
DPSEMI: Dynamic positioning simulation for semi-submersibles
Software Sales
Some software tools are available for commercial use outside MARIN. A complete overview of these software tools for sale can be found under Software Sales.
Some software tools are available for commercial use outside MARIN. A complete overview of these software tools for sale can be found under Software Sales.
Experience
The list below gives a review of decommissioning projects carried out at MARIN:
The list below gives a review of decommissioning projects carried out at MARIN:
- Decommissioning of the Frigg Field (Aker Marine Contractors/Total, 2005)
- Decommissioning of the Brent flare tower with the S7000 (Saipem, 2005)
- Decommissioning vessel ‘Pieter Schelte’ development model tests and simulations (Excalibur, 2002-2002)
Most recent decommissioning papers presented by MARIN
(complete overview of papers can be found under Publications)
(complete overview of papers can be found under Publications)
So far no entries have been published.
Most recent decommissioning articles written for MARIN Report
(complete overview of articles can be found under Publications)
(complete overview of articles can be found under Publications)
Pioneering purpose-built wind turbine installation vessels under test
Willemijn Pauw & Arjen Koop, MARIN Report, 2010
MARIN tackles the first decommissioning projects
Arjan Voogt, MARIN Report, 2006
Willemijn Pauw & Arjen Koop, MARIN Report, 2010
MARIN tackles the first decommissioning projects
Arjan Voogt, MARIN Report, 2006
Contact
For more information on how MARIN can help your organisation with decommissioning, please contact :
For model test and simulation activities: Offshore Department
For full scale measurements: Trials and Monitoring Department
For more information on how MARIN can help your organisation with decommissioning, please contact :
For model test and simulation activities: Offshore Department
For full scale measurements: Trials and Monitoring Department