WellCAD Basics - Advanced Logic Technology

158 - BOOK 1 - WELLCAD BASICS
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� Select Process Spectral Gamma Data from Process > Common >
Spectral Gamma.
� The process tries to reload the last used model file. If it cannot be found
the user will be informed.
� The Spectral Gamma Model Processing dialog box will open.
Log, containing the data
to process.
Information about the
type of model and
remarks on the
calibration data.
SGM model file loaded into Spectral Gamma model Processing dialog
From the drop down list in the Input section, select the log that contains the data
you would like to process and use the Load Model button to find another model
file.
Currently two types of models, both saved in SGM files, can be processed. Models
of type Output counts per energy window contain the low and high limits of
energy windows only and will extract the total counts per energy window and output
the result in separate Well Logs. You will also get the standard deviation for each
window.
If a model of type Spectrum stripping using energy window is contained in the
SGM file a calibration of the count rates per energy window will be applied
according to the calibration coefficients stored in the model file. One Well Log will
be created per calibration model used for the master calibration. The values are
output in calibrated units (e.g. pCi/g, Bq/g or ppm). If the model was setup to contain
conversion factors from calibration units into other units (e.g. conversion from
pCi/g to ppm or %) new Well Logs containing the converted values will be generated
as well. E.g. a model file created at a KUT calibration pit with three different
enriched zones of KUT concentrations/decay rates provided in pCi/g will output
three Well Logs containing K, U and Th concentrations in pCi/g determined from