Low carbon oil production: enhanced oil recovery with CO2 from North Sea residual oil zones

R. Jamie Stewart, Gareth Johnson, Niklas Heinemann, Mark Wilkinson, R. Stuart Haszeldine

Research output: Contribution to journalArticle

4 Citations (Scopus)
6 Downloads (Pure)

Abstract

Residual Oil Zones (ROZ) form when oil has leaked or migrated from a reservoir trap through geological time, leaving a zone of immobile oil. Here we assess the feasibility of ROZ production with CO2 flooding, in a North Sea oil field for the first time. We identify a hydrodynamically produced ROZ, with an oil saturation of 26%, in the Pierce Oil Field of the Central North Sea and adapt established recovery factors for Carbon Dioxide Enhanced Oil Recovery (CO2 EOR) from onshore fields, to estimate oil resource and CO2 storage potential. Our mid case results show that CO2 utilisation increases commercial reserves by 5–20% while storing 15 M t CO2. Based on our calculations CO2 EOR can produce low carbon intensity crude oil from a mature basin and could store more CO2 than is released from the production, transport, refining and final combustion of oil.
Original languageEnglish
Pages (from-to)235-242
Number of pages8
JournalInternational Journal of Greenhouse Gas Control
Volume75
Early online date30 Jun 2018
DOIs
Publication statusPublished - 1 Aug 2018

Keywords

  • carbon dioxide enhanced oil recovery
  • residual oil zones
  • North Sea basin
  • CO2 storage

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