Carbonate Facies Discrimination Integrating Rock Physics Model and Simultaneous Seismic Inversion

Dolomite zones, which are the best reservoir, are mapped using P and S impedances volumes constrained by DEM model in carbonate-siliciclastic mix reservoir. First, rock physics model analysis sets dolomite facies contain more spherical pores and higher porosity, while crack-like pores are typical in low quality reservoir rocks (limestone and heterolitic). This analysis also establishes range of value of P and S impedances that are used to map dolomite zones through opacity and transparence analysis in 3D visualization. In this way, the best reservoir zones, more dolomite content, are in the west and the east, while in the middle there is more abundant limestone facies.