Marginal field development

Ramboll has designed more than 15 mono-column platforms that now stand in the North Sea and the Persian Gulf. The success is in Ramboll’s singular design: the wellheads are arranged relatively closely – in an ingenious circle configuration within the column – minimising wave load on the conductors and allowing for easy valve operation.

Another key design feature is the scaled-down topsides – eliminating all process facilities not strictly required for the transfer of fluids to the pipeline. The result is a robust, safe structure that is cost-effective, low-weight and easy to produce.

Stand-alone and field operation development

The mono-column operates at water depths of 20 to 110 metres. It may be used as a stand-alone or as a satellite platform. It is also well suited to the development of existing fields. Like pearls on a string, an unlimited number of mono-columns can be tied back to an already existing field, extending its operation and increasing its output.

Platform lifecycle services

We assess all stages of a platform’s lifecycle. Our services include:

• Feasibility studies including cost estimates
• Front-end studies including lifecycle costs and risk assessment
• Detailed design of topsides and jackets including dynamic analyses
• Planning of transportation, lifting and installation
• Re-assessment and modification
• Decommissioning that takes both technical and environmental aspects into consideration