Seismic Geomechanical Integration in the Brazilian Pre-Salt, Santos Basin

Abstract

It is estimated that carbonate reservoirs contains more than 60% of the oil reserves and 40% of the gas reserves in the world [1]. The carbonate reservoirs of the brazilian offshore pre-salt layer, Santos Basin, are deep reservoirs (~ 5000 m) located in ultra-deep water column (~ 2200 m) in a large distance (~ 300 km) east from Rio de Janeiro city and exhibit high heterogeneity in terms of porosity, permeability and mechanical properties. The research on seismic - geomechanical integration aims to develop methodology and anticipate the results when using seismic to improve geomechanical modeling and mitigate risks associated with : subsidence of the seabed and faults/fractures reactivation as a result of the reservoir production throughout the productive life of the area. One of the main results of this work was estimate the mechanical properties of deformability: