Ecrin v4.20 - Doc v4.20.01 - © KAPPA 1988-2011
Saphir Guided Session #1
• Sa
pGS01 - 8/12
Fig. D01.1. • Model dialog
Click on
. The model is generated and immediately it can be seen that there is an
important mismatch between the model and the data, see Figure D01.2 left. This mismatch is
caused by not having used the correct skin. By calling the Model dialog
(Figure D01.1) again (and a few times) and manually changing the skin a good match will be
obtained as seen in Figure D01.2 right. There is still a small problem with the match,
the wellbore storage coefficient is not exactly right but this problem will be dealt with
in the next section.
Fig. D01.2 • Loglog matches
It is also possible to run an automatic model.
If you hold down the shift key and click on
(the red flash indicates automatic mode) the
homogeneous model with wellbore storage and skin in an infinite system will be run without
the dialog in Figure D01.1. The skin will be estimated and the match as indicated in Figure
D01.2 right would have been immediate. It is also possible in the Settings page (panel) to
have Saphir make the automatic skin calculation the first time the model dialog is called.
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