Full text loading...
-
On the simultaneous determination of dispersion and nonlinear adsorption parameters from displacement tests by using numerical models and optimization tehcniques
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, IOR 1991 - 6th European Symposium on Improved Oil Recovery, May 1991, cp-44-00082
- ISBN: 978-94-6282-133-0
Abstract
The simultaneous determination of the dispersion and nonlinear adsorption (Freundlich or Langmuir) parameters is obtained automatically by matching results of numerical models with the breakthrough curve measured during a laboratory displacement test. This matching is performed by applying multivariate optimization techniques to minimize the differences between numerical and experimental results. Numerical solutions are obtained by solving the convection-dispersion-nonlinear adsorption equation by finite differences using the Crank-Nicolson method with iterations to account for nonlinearities.