Geophysical methods to detect CO2 migration pathways in the shallow subsurface

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.

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