Isothermal Gravitational Segregation: Algorithms and Specifications

Snorri Halldórsson, Erling Halfdan Stenby

Research output: Contribution to journalJournal articleResearchpeer-review


New algorithms for calculating the isothermal equilibrium state of reservoir fluids under the influence of gravity are presented. Two types of specifications are considered: the specification of pressure and composition at a reference depth; and the specification of the total overall content of the reservoir, along with the reservoir geometry. It is shown how both types of calculations can be performed in an efficient and robust manner using volume-based thermodynamics. The new method makes it possible to evaluate the influence of reservoir geometry and gravity segregation on the hydrocarbon reserves. (C) 2000 Elsevier Science B.V. All rights reserved.
Original languageEnglish
JournalFluid Phase Equilibria
Issue number1-2
Pages (from-to)175-183
Publication statusPublished - 2000


  • method of calculation
  • application
  • equation of state
  • reservoir
  • gravity
  • segregation


Dive into the research topics of 'Isothermal Gravitational Segregation: Algorithms and Specifications'. Together they form a unique fingerprint.

Cite this