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Environmental Impact Assessment on the UKCS

BMT Cordah has extensive experience in carrying out environmental impact assessments (EIAs) and preparing environmental statements (ES) for proposed oil and gas developments on the UKCS.

BMT Cordah has extensive experience in carrying out environmental impact assessments (EIAs) and preparing environmental statements (ES) for proposed oil and gas developments on the UKCS.

Two examples are Nexen Petroleum UK Limited’s Blackbird and Golden Eagle Area developments, both located in the central North Sea.

The Blackbird field is approximately 75 miles east of the UK coast in 110 m water depth.

The development includes a production well, a water-injection well, installation of subsea facilities and production and gas lift flowlines tied back to an existing Floating Production Storage and Offloading facility.

The Golden Eagle area development, approximately 70 miles east of the UK coast in 100m water depth, involves the installation of a new platform complex to target reserves in the Golden Eagle (Burns), Golden Eagle (Punt), Pink oil and gas fields by drilling up to seven subsea and seventeen platform wells.

The development  required installation of subsea infrastructure, infield and export pipelines and umbilicals.

BMT Cordah assessed the environmental consequences of these two developments by working with Nexen to:

  • identify potential environmental impacts associated with the projects
  • characterise the receiving environment, i.e. the physical, chemical, biological and socioeconomic nature of the proposed development areas
  • assess the significance of potential impacts from planned activities
  • assess the significance of potential impacts from accidental or unplanned events; and
  • develop controls and mitigation measures to eliminate or reduce the severity of impacts and plans to avoid or reduce the likelihood of accidental or unplanned events

BMT Cordah supported Nexen in its consultation with the environmental regulators and other interested parties and incorporated stakeholder concerns into the assessment.

Based on the results of the EIA, BMT Cordah prepared an ES for each project for submission to the regulatory authorities.

Both developments were approved by the regulatory authority.