Statics Estimation and Raw Data Quality Control in CDP Data by Means of POLYCOR Method

POLYCOR is an alternative method of static shifts correction in CDP data processing based on multiple correlations. It is based on four-factor model of time shifts. This model includes kinematical shifts, dip shifts and shot point (SP)/ observation point (OP) statics. POLYCOR method features high noise immunity. Accuracy of SP and OP statics determination in practice does not depend on shift values (for wide range of shift values). When using this method it is not necessary to involve a priori estimation of velocity. Paper contains description and efficiency estimation of POLYCOR method. Efficiency estimation is based on the synthetic data experiment. Results of synthetic data experiment are described and illustrated. Synthetic data experiment results confirm that an accuracy of SP static determination does not depend on a priori defined SP static shifts. Presence of white noise signal in most case does not affect accuracy and reliability of algorithm.