TULLOW – Gas Storage and Carbon Dioxide Sequestration

Location

Offshore, UK

Type of Service

Feasibility, Option Selection and Concept

Statement of Relevance

A study was undertaken to assess the potential future use of the depleted reservoirs (almost end of field life) and infrastructure of an offshore gas production facility in the North Sea. Potential options considered were storage of natural gas for seasonal production to the UK gas market and storage of flue gas (CO2) produced as a by-product of power generation from fossil fuels.

Description of Services

Energy and Power’s scope of work involved gathering data relating to pipelines, compressors, platforms and subsea infrastructure, to produce approximate capability and capacity statements, pipeline corrosion and inspection reports and existing allowable operating pressures. This enabled us to develop process schemes to match the reservoir characteristics, required throughputs and the capabilities of existing equipment.

Detailed analysis was carried out for existing onshore compressors, all onshore equipment and likely modifications / tie-ins, offshore platform layout/safety issues for new equipment, offshore structural issues and assessments to include changing conditions during operational life. Our scope included CAPEX and OPEX cost estimates for the required options and performing risk reviews for selected schemes to allow ranking where required. All results were compiled in a final report covering all items in the original scope of work along with any additional work identified during the study.