Submissions
A collection of information used to analyze, calculate, or research a specific topic.
Tools
Software used to analyze, calculate, or research a specific topic.
Presentations
An organized collection of images, graphics, and text used to explain a topic.
Publications
An article that has been printed and made available to the public.

Adaptation of the black oil simulator to two-phase Status report, Project BE1, Task 4

License(s):
Creative Commons Attribution

The development of an unsteady-state procedure for determining three-phase relative permeability curves requires the characterization of the relative permeability curves by adjustable parameters and the adaption of a nonlinear least-squares procedure to the finite-difference approximation of the Buckley-Leverett three-phase flow equation including capillary pressure. A method was developed to represent three-phase relative permeability data by a functional form based on experimental data. Three-phase relative permeability experimental data reported by previous investigators were represented by relative permeability functions. These functions express the relative permeability of a given phase to all fluid saturations (three saturations in the case of three-phase flow) by a six parameter power law equation. The six parameter equations fit the experimental data within 0.53% error. An automatic method also was developed for representing three-phase relative permeability expeimental data. This procedure eliminates errors due to subjective bias. The developed relative permeability functions were incorporated in a multi-dimensional, three-phase black oil simulator. Also, a finite difference Levenberg-Marquardt routine for solving least-squares problems was adapted to the black oil simulator. These modifications make the estimation of the parameters in the relative premeability functions possible by fitting simulated transient three-phase displacement tests to experimental tests. Preliminary results using two-phase flow displacement showed that the parameters can be estimated within a reasonable amount of computer time. Although preliminary results showed that the program works adequately for two-phase flow, conclusions cannot be stated at the present time since some errors were found in the Fortran code of the optimization function. Appropriate changes have been made, and the new version is being tested.


Citation (Click to Copy)

Data and Resources

Check all

    pdf
    NIPER-118.pdf
    The development of an unsteady-state procedure...
    Creative Commons Attribution

Similar Submissions

Additional Info

Field Value
State active
Citation Maerefat, N.L., & Parmeswar, R. (1986). Adaptation of the black oil simulator to two-phase and three-phase relative permeability determination using unsteady-state technique. Status report, Project BE1, Task 4.
Is NETL associated No
Organization National Inst. for Petroleum and Energy Research
spatial Show Spatial

Submission extent

Map data © OpenStreetMap contributors
Tiles by MapBox