Surface consistent amplitude and phase corrections

Geophysical tools used in the direct detection of hydrocarbons include the study of time, velocity and the amplitude anomalies. Static and dynamic corrections are generally understood to be the corrections applied to the arrival times of reflections in the normal course of seismic data processing. However the validity of velocity analyses and the resulting processed seismic sections largely depend on the accuracy of static time or linear phase shifts computed to remove near surface time anomalies. Similarly the validity of amplitude anomalies present on the seismic section will depend on the proper removal of the near surface effects. This paper presents a technique for computation of surface consistent amplitude and phase corrections. Several examples using both marine and land data are presented to illustrate the techniques.