Data loading and editing
Saphir can load an unlimited number of gauges, rates,
pressure and other data in most formats including
ASCII, Excel™, PAS and databases via OLEDB &
ODBC. Saphir has real time links with acquisition
systems, data drag-drop from other modules and
KAPPA Server, which can identify build-ups and
initialize Saphir on a single click. Multi-layer rates
may also be imported from Emeraude.
Data QA/QC and datum correction
Saphir offers a range of interactive QA/QC tools
including trends, tidal correction, gradient analysis
and gauge comparison to detect sensor drift and
wellbore effects.
Saphir can define or import VLPs and well intake
models, either from Amethyste or standard file
import. VLPs are used in conjunction with analytical
and numerical models to simulate the pressure at
gauge depth or at surface. Alternatively they can be
used to correct pressure data to reservoir depth.
Test design
All analytical and numerical models may be used to
generate a virtual gauge on which a complete analysis
may be simulated. This can take into account gauge
resolution, accuracy and potential drift in order to
select the appropriate tools or to check if the test
objectives can be achieved.
Extracting
Δ
P and deconvolution
One or several periods of interest, generally shut-ins,
for one or several gauges may be extracted and used
on a semi-log and loglog plot, the latter integrating
the Bourdet derivative.
Deconvolution can be used to combine several
successive shut-ins into a longer ‘virtual production’.
Available methods are (1) von Schroeter et al, (2)
Levitan (with material balance correction) (3) Houzé
et al and (4) a hybrid combination.
Edit rates dialog
QA/QC
Deconvolution of two consistent build-ups (von Schroeter et al)
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