Lectures - Norsar

SeisRoX: A new system for
quantitative model-assisted
seismic interpretation
Today’s seismic interpretation and attribute analysis are performed at
many levels in the E&P cycle – from structural horizon picking in early
exploration, to advanced 4D reservoir studies during petroleum production.
In many cases the interpretation process is simply a systematic collection
of seismic attributes without any direct relation to a particular model
behind. In more advanced interpretation, it can be very fruitful to relate the
interpretation to a well-defined geo-model representation. NORSAR has
developed a new software tool called SeisRoX, which is based on the idea
that such a geo-model should always exist. In this context, the geo-model is
defined as a spatial representation of geophysical and geological properties
in a certain volume of the subsurface, containing sufficient information to
allow a simulation of the seismic response of that model. In SeisRoX, the
seismic response is a simulated migrated seismic cube (‘3D seismic image’),
or seismic attributes deduced from such a cube as this is the usual working
domain for most interpreters.
Vannmetning for to
tidspunkter plottet på en
SeisRoX modell-flate.
The water saturation from
two time steps plotted
on the SeisRoX model
horizons.