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Ec Doc v4.20.01 - © KAPPA 1988-2011 Saphir Guided Sessio 11 rin v4.20 - n #8 • SapGS08- 1/
Saphir Guided Session #8
A01 • Introduction
This Guided Session illustrates the minifrac option available for analysis of pressure data
falloff. The minifrac analysis workflow will be explained and analyzed throughout one
illustrative example. The new specialized plots will be used to perform first a post shut-in
analysis and then an after closure analysis in order to obtain the closure parameters, to
identify the various flow regimes and to assess the reservoir pressure and the far field
transmissibility.
B01 • Opening the Saphir analysis
The example under consideration here consists of a first period of water injection (with a rate
of 2900 STB/D) lasting for 0.1925 hour followed by a 158 hours falloff. The injected zone has a
pay thickness of 50 ft and the injected fluid is considered to be pure water.
Start by opening SapGS08.ks3 document.
‘Water’ was selected as the reference phase and the ‘Pay Zone’ set to 50 feet as shown in the
screenshot below. All other parameters (including PVT parameters) were kept to their default
values.
Fig. B01.1 • New document dialog