2017-05-10: Add update of virtual machine image (r2).
Note that to run this image within VirtualBox, the VirtualBox Extension Pack needs to be installed (this is a separate download from the VirtualBox website). r2 is updated with the xval source code as of 9th May 2017 and includes several bug fixes. If you have any problems running the virtual machine image, please report a bug via the SourceForge page.
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2016-09-15: Add release of virtual machine image
Xval Ubuntu 16.04.7z is a virtual machine image containing a working installation of xval and all the support software. Compatible with VirtualBox. Username xval password xval.
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2013-09-16: Release version 3.9
Adds support for cross-validating all horizons (i.e. the cross-validation statistics are computed for all layers and not just the deepest).
Plus a few bug fixes.
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SPRINT
Copyright (C) 2007-2009 RPS Energy Ltd (rpsscp@rpsgroup.com www.rpsgroup.com)
Copyright (C) 2010-2013 Nick Crabtree (nickcrabtree@gmail.com)
This program is free software; you can redistribute it and/or modify
it under the terms of version 2 of the GNU General Public License
as published by the Free Software Foundation.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of version 2 of the GNU General
Public License along with SPRINT; if not, write to the Free
Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
02110-1301 USA
WHAT IS SPRINT?
SPRINT is a toolkit for investigating the depth uncertainties
arising from vertical depth conversion. Key features are: running
multiple depth-conversion in "batch" mode, cross-validation
(dropping wells), and html report output.
More details on the theoretical background are in the published
geophysical literature, especially
http://www.cseg.ca/conferences/2004/2004abstracts/013S0130-Crabtree_N_Using_Cross_Validation.pdf
and http://www.scopic.com/papers/EAGE2001_depth_uncertainty.pdf
GETTING ASSISTANCE
RPS Energy Ltd provide consulting services using this software, and
assistance in installation and use, for a standard per-hour
fee. Please contact rpsscp@rpsgroup.com for more information.
USING SPRINT
A sample driver script is supplied as sample_sprint.pl. grid.pm and
sprint.pm both have 'use lib "/home/user/scripts"' near the
beginning. This line should be changed to reference the location of
the SPRINT code.
Near the top of the sprint.pm file there is a reasonable amount of
documentation on the options and input file formats.
EXTERNAL DEPENDENCIES
SPRINT has the following external dependencies, all of which are freely available:
gstat from http://www.gstat.org
gnuplot from http://www.gnuplot.info
various modules from http://www.cpan.org including but not limited to:
Statistics::OLS
LockFile::Simple
PDL
WeakRef
perl version 5.8.0 or newer from www.perl.org
