Developing the rock physics model - improved carbon dioxide mixing rules for carbon capture and storage

J. Roberts, S. Brough

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

1 Citation (Scopus)

Abstract

Energy policies focus on maximising current hydrocarbon resources and minimising carbon emissions. Consequently, fresh importance is placed on understanding the behaviour and properties of CO2 for Carbon Capture and Storage (CCS). This presents a challenge for modelling, monitoring and verifying CCS projects, since CO2 is a complex fluid, potentially varying in density by almost three orders of magnitude within the reservoir column, and existing in all four fluid states (vapour, gas, liquid and super critical (scCO2). The Statistical Associating Fluid Theory (SAFT) is an equation of state (EoS) which provides an improved mixing model for CO2 with water, brine and hydrocarbons. Unlike other EoSs, SAFT mixing rules allow accurate CO2 modelling close to its critical point, and they account for the deviant behaviour caused by additional chemical species present in the reservoir. Thus, the SAFT mixing model offers a method to accurately predict, monitor and verify the properties of CO2 over the lifetime of a CCS project.

Original languageEnglish
Title of host publication71st European Association of Geoscientists and Engineers Conference and Exhibition 2009
Subtitle of host publicationBalancing Global Resources. Incorporating SPE EUROPEC 2009
Pages1899-1903
Number of pages5
Volume3
Publication statusPublished - 1 Jan 2009
Event71st European Association of Geoscientists and Engineers Conference and Exhibition 2009 - Amsterdam, Netherlands
Duration: 8 Jun 200911 Jun 2009

Conference

Conference71st European Association of Geoscientists and Engineers Conference and Exhibition 2009
CountryNetherlands
CityAmsterdam
Period8/06/0911/06/09

Keywords

  • rock physics
  • carbon dioxide mixing
  • carbon capture
  • energy policy
  • hydrocarbons
  • petroleum reservoir evaluation
  • carbon capture and Storage
  • carbon emissions
  • complex fluids

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