About the course

This course provides you with an awareness of the approaches, issues and challenges associated with decommissioning for North Sea oil and gas fields.

It details the complete decommissioning process from beginning to end covering: planning activities and considerations; well plugging and abandonment activities; approaches to the decommissioning of structures and pipelines and the associated onshore activities. In addition, given the current climate and the need to reduce the taxpayer contribution to decommissioning, innovation leading to cost saving approaches to decommissioning will be considered and discussed.

This course is suitable for anyone working in or interested in the decommissioning sector, and will develop your knowledge of the various stages of a decommissioning project and what is involved, including the applicable regulations and legislation.

Learning outcomes

  • Describe the benefits of collaboration and campaigning for your decommissioning projects
  • Explain how collaboration can be applied and controlled throughout the project in accordance with BS 11000
  • Identify potential pitfalls and the means of avoiding them
  • Identify the methodologies currently adopted for well plugging and abandonment and the decommissioning of offshore structures and pipelines
  • Gain an insight into emerging and transferable technologies, innovations and developments that could improve process efficiency and safety whilst reducing the costs associated with the decommissioning process

Overview of decommissioning in the North Sea

Planning and legislation

  • North Sea infrastructure
  • When is the end?
  • Decommissioning commitment
  • Learning from other sectors
  • Legislation and regulations
  • Decommissioning plan/programme
  • Cost estimation
  • Project management

Well plugging and abandonment

  • Well configurations
  • Plugging and abandonment methods
  • Challenges, costs and timing
  • New technology
  • Live well abandonment
  • Case studies

Decommissioning of structures

Pipeline decommissioning

  • Topsides facilities
  • Platform jackets
  • Gravity based structures
  • Floating facilities
  • Subsea structures
  • Case studies
  • Pipeline cleaning
  • Removal options
  • Mattresses and grout bags
  • Decommissioning in-situ
  • Case studies

Onshore disposal

Group exercise

  • Transportation¬†and load in
  • Onshore locations and capabilities
  • Hazardous materials and permitting
  • Waste hierarchy
  • Devise a decommissioning programme for a North Sea field development

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