Patent ID: 6084825
Filing Date: 2000-07-04
Classification: G01V

Abstract:
A method of determining an optimum processing sequence by calculation of processing sequence sensitivity and processing sequence error, comprising:a. providing a reference processing sequence to be applied to input raw gathers;b. selecting a series of test processing sequences to be applied to the input raw gathers;c. applying a reference processing sequence and a test processing sequence to the input raw gather to obtain a reference and test seismic output data;d. normalizing an RMS value of the test seismic output data to that of the reference seismic output data on a trace by trace basis;e. finding a normalized difference between the test and the reference seismic output data on a sample by sample basis in the time domain;f. displaying the differences on color coded plots in time scale format over a CDP range;g. for each of a plurality of CMP gathers, performing linear regression to obtain a stack and a zero offset calculated for each time index;h. recording a difference between these two values obtained in g;i. finding normalized differences between the error for the test and the reference;j. displaying the results from i. on color coded plots for assessment;k. determining order of sensitivity for each processing step in the reference processing sequence; andl. rejecting any processing step based on the results from f and j and revising the reference processing sequence.