Natural open fractures have been reported in the Barra Velha Formation (BVE) in the pre-
salt lacustrine carbonate reservoirs in the Santos Basin offshore Brazil. These fractures …

Time-lapse full-waveform inversion (FWI) has become a powerful tool for characterizing and
monitoring subsurface changes in various geophysical applications. However …

Paleofluid-rock interaction results in the modification of the ultra-deep reservoir quality, but
the coupling effects of the paleofluid evolution on reservoir quality modification are still …

Robust upfront reservoir characterization is vitally important when problems arise later in the
management of a field. In this case, thin high-permeability zones were mapped, even though …

Abstract Time-lapse (4D) seismic data offer valuable insights into fluid movements and
pressure changes within reservoirs, thus aiding the updating of numerical models used in …

Refracted seismic waves from a long offset survey can be used for travel time tomography,
providing further information of deep-water oil and gas reservoirs. In this work, we apply first …

This research aims to investigate the challenge of subsurface illumination issues and
artifacts in the velocity model estimation process caused by the limited number of shots in a …

We present an innovative system for 4D seismic acquisition to monitor reservoirs flexibly, on-
demand and at low cost, enabling better field management. The solution uses nodes, which …

The uncertainties and risks related to the complex environments of deepwater oil and gas
reservoirs require interdisciplinary workflows and advanced reservoir monitoring techniques …

Iterative ensemble smoothers are gaining recognition as robust data assimilation methods
for modeling geological reservoirs in various applications, including hydrocarbon …