Basic HTML Version
OA – DF - YB – LB: Thermal Simulation And Interpretation - Part 1
p 3/10
In single phase, the enthalpy h is calculated from its derivatives below, in a double integration
on T and P from an arbitrary reference (T
0
,P
0
):
T
P
h
1
1
and
p
c
T
h
where c
p
is the specific heat capacity
In multiphase the single component enthalpies are calculated from similar principles. The
phase enthalpies are then calculated from the molar composition of the phases.
3 - Emeraude ‘Energy’ model
This is a direct simplification of the Rubis model geared towards PL and thus steady state
conditions. This model assumes that there is no vertical conduction within the reservoir.
Under steady state conditions, it suffices to consider 2 points in the reservoir, the outer one
representing the undisturbed conditions at some distance
e
R
,
geo
T
and
e
P
, and the sandface
conditions,
sf
T
and
sf
P
. The energy and mass balance equations take the general form
introduced earlier.
Ts
Ps
Ts-
Ps-
Tsf
Psf
Tgeo
Pe
is
q
s
q
s
q
dl
w
r