Porosity map of a reservpoir obtained from seismic inversion.
RMS Impedance amplitude was extracted across the reservoir from seismic
and calibrated into porosity using a simple linear regression.
On the map, color is porosity (in fractions) obtained from seismic,
white numbers indicate porosity from wells.
Notice the generally good correspondence. Anomalously low values (blue) near
the large fault along the southern edge of the reservoir fault
need to be disregarded because the seismic imaging is distorted by a fault shadow,
resulting in undreliable porosity estimates.