Page 12 - KAPPA Software Technical Summary (September 2012)

Use of HM (Rubis) sectors
A sector of a Rubis full-field 3D reservoir model can
be imported and run directly in Saphir for a given
time range. The starting point is the dynamic state
of the simulation at the extraction time. This enables
Saphir to simulate 3D/3-phase flow with gravity and
in complete coherence with the reservoir model.
Multilayer analysis
An unlimited number of commingled layers that
have individual initial pressures can be modeled
analytically or numerically. Connected layers can
be modeled numerically. Analytical models can
superpose internal or external single layer models.
Stabilized or transient rates can be loaded and
associated with any combination of contributing
layers. Rates may be loaded directly from an
Emeraude PL analysis. Optimization is performed on
both pressure and layer rates.
Optimization and sensitivity analysis
Nonlinear regression is used to optimize the model
parameters. This may be automatic or user controlled
from a list of variable parameters, an acceptable
range and weighting of the data. Optimization may
be performed on the extracted period(s) or on the
whole production history. Confidence intervals may
be displayed. Sensitivity analysis may be performed
on the same model using different parameters.
AOF / IPR
AOF and IPR analyses are available for vertical,
horizontal and fractured wells. Test sequences may
be flow after flow, isochronal or modified isochronal,
with or without an extended stabilized flow. Transient
IPRs are also available. Shape factor and average
pressure can be calculated for closed and constant
pressure systems. IPR facilities are shared with
Amethyste.
IPR
Rubis sectors running in Saphir
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