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Pulsed Neutron Log (PNL) interpretation
Clean formation and shaly single / dual water
models are available. Channels may be estimated
from correlations or loaded from other openhole
interpretations. Classical crossplots can be created to
obtain or correct estimates. Time-lapse presentation
can be generated.
Selective Inflow Performance (SIP)
SIP can be made with a few clicks. Pseudopressures
are used for gas. An unlimited number of SIP’s can be
created and compared. Each zone can be assigned
a different model: straight line, c&n, or Jones. The
SIP can use the total rate, a phase rate, or the total
liquid rate. Data may be downhole or from surface.
Pressure datum correction and composite IPR’s are
available.
Temperature models and DTS
Emeraude offers a segmented model and an energy
model. The analytical segmented model accounts
for enthalpy balance in front of inflow zones, and
conduction / convection between. Joule-Thomson
effects are calculated from a user estimated pressure
drop. The numerical energy model solves the full
energy equation in the wellbore and the reservoir,
accounting explicitly for the thermal effects within
the reservoir. Both models can be used for the
analysis of DTS data, standalone temperature logs,
or to replace a faulty or blinded spinner.
Test design
Tool responses can be modeled for any particular
flow scenario. The simulated channels take into
account the tool specific response, its resolution and
the noise. Packer leaks and steam injection can be
simulated.
Formation test data QAQC
Reservoir pressure, permeability and mobility may
be loaded. Quality indicators can be added at any
depth. Lines can be calculated or drawn, gradients
and fluid contacts can be calculated.
APERM
This method corrects, with the PL interpretation,
the open-hole effective permeability. It uses an
IPR relationship where the relevant reservoir or
perforation parameters are defined zone by zone.
The method is implemented for single-phase liquid,
liquid mixture, or for gas using pseudopressures.
Steam-injection
This special analysis uses a dedicated 2-phase
steam-water PVT for the design of steam-injection
tests. The temperature, pressure, holdup, and
velocity profiles are calculated from surface, to come
up with the property of the injected fluid in each
zone. Relevant slip models are considered.
Output / Export
Emeraude log channels can be exported in LIS, LAS,
or ASCII format. Log tracks and X-Y plots can be
copied to the clipboard as a bitmap or a Windows
Metafile. Fonts, scales and grid lines can be modified.
API logs can be produced. A built-in report can be
printed and previewed that includes predefined
sections. It is possible to produce a report in MS-
Word™ using the OLE™ interface of Emeraude. A
template MS-Word™ report is installed and can be
customized as required. All reporting and exporting
features are accessible with the free reader.
