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A generalized cubic equation of state with application to pure CO2 injection in aquifers

Abstract

A generalized cubic equation of state is given. The Peng-Robinson and the Soave-Redlich-Kwong equations are special cases of this equation. The generalized equation of state is precisely as simple and computationally efficient as these classical equations. Through comparison with the Span-Wagner equation for CO 2, we obtain an improved density accuracy in predefined temperature-pressure domains. The generalized equation is then verified through two relevant examples of CO 2 injection and migration. Comparisons are made with other standard cubic EOS in order to show the range of solutions obtained with less accurate EOS

Category

Academic article

Language

English

Author(s)

  • Ivar Aavatsmark
  • Bawfeh Kingsley Kometa
  • Sarah Eileen Gasda
  • Tor Harald Sandve
  • Halvor Møll Nilsen

Affiliation

  • SINTEF Digital / Mathematics and Cybernetics
  • University of Bergen
  • NORCE Research AS

Year

2016

Published in

Computational Geosciences

ISSN

1420-0597

Volume

20

Issue

3

Page(s)

623 - 635

View this publication at Norwegian Research Information Repository