Spatially Relative Amplitude Compensation (SRAC)

Short period non-geologic amplitude anomalies often cause artifacts on imaged data, hindering structural interpretation and masking subtle stratigraphic or AVO features.

SRAC applies a spatially relative amplitude compensation that can smooth sudden changes in amplitude, for example due to differential overburden absorption such as in shallow gas zones.

SRAC increases structural image quality when used as an amplitude preconditioning step prior to Kirchhoff prestack time migration, or as preparation for detailed stratigraphic, time-lapse (4D), AVO and inversion workflows.

In areas where highly complex amplitude anomalies are observed, a more rigorous approach should be adopted such as Surface Consistent Amplitude Correction (SCAC) and Poststack Wavelet Stabilization.