Your browser is not recommended for EDX, we suggest using the latest version of Google Chrome
A collection of information used to analyze, calculate, or research a specific topic.
Software used to analyze, calculate, or research a specific topic.
An organized collection of images, graphics, and text used to explain a topic.
An article that has been printed and made available to the public.
Adaptation of the black oil simulator to twophase Status report, Project BE1, Task 4
License(s):
Creative Commons Attribution
The development of an unsteadystate procedure for determining threephase relative permeability curves requires the characterization of the relative permeability curves by adjustable parameters and the adaption of a nonlinear leastsquares procedure to the finitedifference approximation of the BuckleyLeverett threephase flow equation including capillary pressure. A method was developed to represent threephase relative permeability data by a functional form based on experimental data. Threephase 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 threephase 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 threephase relative permeability expeimental data. This procedure eliminates errors due to subjective bias. The developed relative permeability functions were incorporated in a multidimensional, threephase black oil simulator. Also, a finite difference LevenbergMarquardt routine for solving leastsquares 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 threephase displacement tests to experimental tests. Preliminary results using twophase 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 twophase 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.
Additional Info
Field 
Value 
State 
active 
Citation 
Maerefat, N.L., & Parmeswar, R. (1986). Adaptation of the black oil simulator to twophase and threephase relative permeability determination using unsteadystate technique. Status report, Project BE1, Task 4. 
Is NETL associated 
No 
Organization 
National Inst. for Petroleum and Energy Research 
spatial 
Show Spatial
{"type":"MultiPolygon","coordinates": [[[[94.52526, 33.621136], [97.11585, 33.72604], [97.15276, 33.728775], [97.87006, 33.855213], [99.17651, 34.21282], [99.68528, 34.37752], [99.996475, 34.562386], [102.9974, 36.49237], [102.99771, 36.998524], [95.07193, 37.001476], [94.62038, 36.997047], [94.42855, 35.400547], [94.43932, 34.92915], [94.47669, 33.63208], [94.50082, 33.62316], [94.52526, 33.621136]]]]}
