CO2GEONET
JRAP 17
Geophysical methods to detect CO2 migration pathways in the shallow subsurface
OBIECTIVE
In that joint research activity we are studying the geophysical methods to
define, to map and to detect the pathways of the leaking gas at shallow depths
and to characterize the eventual points of leakage in the shallow subsurface
structures.
ACTIVITY
OGS - GEDA,
TNO
(TNO Built Environment and Geosciences, The Netherlands) and the University "La Sapienza" of
Rome (Department of Geology) collected
2
seismic lines in Latera (october 2006).
The first profile was acquired with Mini Bang, Power assisted Weight Drop and
VibroSeis, the second profile (perpendicular at first) only with VibroSeis. The
seismic data has a moderate Signal/Noise ratio only in the first line in west-north zone.
For this reason an heavy trace editing was
carried out. We calculated statics with first break picking method (inversion
with CAT3D). We calculated the stack velocity with semblance with control of
CVS. After a FX deconvolution was applied to section for lateral signal
enhancement.
A shot (WN) before and after filtering (AGC)
MY CONTRIBUTION TO THE PROJECT: Acquisition and processing seismic data