Lukis Bharoto Agung's report
by
Lukis Bharoto Agung, M.S.E.
University of Texas at Austin, 1995
Supervisor: Augusto L. Podio
In order to analyze the performance and determine the producing
capacity for the components in the production system, it is often
used a system analysis approach, which is sometime called NODAL
Analysis. There are several software applications that can help
us with this NODAL analysis. The software that we are going to address
here is the SAM program. SAM program is a graphical solution to
production optimization developed by Dwights Energy Data, Software
and Information Services.
This report will try to optimize the utilization of the SAM program
by addressing the problem of selecting the appropriate model by
studying the sensitivity of the solution to the choice of multiphase
flow correlation.
The result of the simulation shows significant variation on the
elevation gradient, liquid holdup behavior, and the solution. The
solution varies from flow rate (Qf) equal to 237 bbl/d (@ Pwf = 580 psi)
for Beggs & Brill correlation up to Qf equal to 408 bbl/d
(@ Pwf = 462 psi) for Fancher & Brown correlation.
For most of the cases, the Beggs & Brill correlation is adequate
enough, since they considered the flow regime and liquid holdup.
Also this correlation was tested for inclined wells. However, this
becomes not valid if the field data proved otherwise. Poettmann &
Carpenter, Baxendell & Thomas, and Fancher & Brown correlations are
not recommended since they do not account the effect of liquid holdup
and flow regime.
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