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Ecrin v4.20 - Doc v4.20.01 - © KAPPA 1988-2011 Ecrin Guided Session #1 • EcrGS01 - 21/36
Fig. D01.2 • Shut-in express called for the main build-up
Through this option, a Saphir file will be built on the fly with the current pressure data, and
‘some rate history’ which will be 0 over the shaded zone (the selected shut-in period). For the
rate history prior to the build-up we need to select a given fluid (here only Oil is available) and
we need to select among:
 The actual production = ‘OIL Rate’ channel under Well#1.
 Part of the actual production only.
 A manual entry of production time tp, and rate Q.
We will choose the first option – select ‘Use the total production history’ in the dialog. Leave
the ‘truncate data at the end of the last shut-in’ checked so that only data up to the selected
shut-in period is carried over to Saphir.
Note: the rate history currently holds more than 26000 rates. When we go into a real analysis
later we will reduce those rates to something smaller in Saphir; for the time being all we want
is to have a quick look at the loglog trend without calculating any model but only time
superposition so this is OK
Without further inputs, we are taken straight into Saphir after the Extract dP step. See
Figure D01.3.