A FORTRAN program for interpretation of relative permeability from unsteady-state displacements with capillary pressure included
Computers & Geosciences
By: E.O. Udegbunam
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Abstract
This paper presents a FORTRAN program for the determination of two-phase relative permeabilities from unsteady-state displacement data with capillary pressure terms included. The interpretative model employed in this program combines the simultaneous solution of a variant of the fractional flow equation which includes a capillary pressure term and an integro-differential equation derived from Darcy's law without assuming the simplified Buckley-Leverett flow. The incorporation of capillary pressure in the governing equations dispenses with the high flowrate experimental requirements normally employed to overcome capillarity effects. An illustrative example is presented herein which implements this program for the determination of oil/water relative permeabilities from a sandstone core sample. Results obtained compares favorably with results previously given in the literature. ?? 1991.
Suggested Citation
Udegbunam, E., 1991, A FORTRAN program for interpretation of relative permeability from unsteady-state displacements with capillary pressure included: Computers & Geosciences, v. 17, no. 10, p. 1351-1357, https://doi.org/10.1016/0098-3004(91)90001-T.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | A FORTRAN program for interpretation of relative permeability from unsteady-state displacements with capillary pressure included |
| Series title | Computers & Geosciences |
| DOI | 10.1016/0098-3004(91)90001-T |
| Volume | 17 |
| Issue | 10 |
| Year Published | 1991 |
| Language | English |
| Publisher | Elsevier |
| Publisher location | Amsterdam, Netherlands |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Computers and Geosciences |
| First page | 1351 |
| Last page | 1357 |