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case study:

offshore development emissions forecasting

an assessment of emissions sources for a planned offshore oil & gas development​

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at a glance

challenges

  • Complex development with multiple emissions sources​

  • Development still in planning​

  • Requirement for appropriate emissions factors relevant to planned activities and proposed vessels​

outcomes

  • Clearly mapped emission sources​

  • Field Development Plan review – implications of design selection on emissions noted​

  • Opportunities for emissions reductions presented​

  • Benchmarking and comparison to similar developments​

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“assessment of emissions sources at an early planning stage allowed for identification of emissions reduction opportunities to be implemented from the outset - building a lower impact development over its lifetime.”​

client rep.​

objectives

An oil and gas operator required a detailed emissions forecast for their planned offshore oil and gas development to facilitate discussions with regulatory bodies and investors on the potential impact of their proposed development. ​

The client needed to understand the likely emissions from all activities relating to the development to enable them to focus efforts on emissions reduction opportunities that would have the greatest positive impact, while maximising economic recovery.​

steps taken

  1. Engagement with team members from project, logistics and engineering teams, to understand all available emissions-related data​

  2. Develop awareness of development’s objectives and constraints ​

  3. Account for any emissions mitigation actions already considered by client​

  4. Assessed all assumptions contributing to emissions.​

  5. Calculation of emissions in accordance with the GHG Protocol​

  6. Grouping of emissions by activity plus by Scope 1-2-3.​

  7. Ran multiple scenarios to reflect potential future developments including addition of satellite fields and decommissioning. ​

  8. Identified opportunities for emissions reductions involving produced water and associated gas to avoid flaring, plus fugitive emissions monitoring.​

  9. Presented analysis of emissions to support discussions with internal and external stakeholders.

results

technically robust forecast of emissions

  • GHG Protocol aligned emissions calculations using reputable and relevant emissions factors ​

  • A robust and defendable consideration of the impact of the development​

  • List of realistic opportunities for early emissions reductions at the design stage for the company.​

provision of independent advice​

​Utilising the extensive technical expertise together with the independent view of the sustain:able team to remove any bias from the results.​

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