METHOD FOR REFLECTION TIME SHIFT MATCHING A FIRST AND A SECOND SET OF SEISMIC REFLECTION DATA

摘要

The invention is a method for reflection time shift matching a first and a second set of seismic reflection data (10, 30) comprising first and second seismic reflection traces (1, 3) with series of generally corresponding seismic reflections (11, 31). The first and second sets of seismic data (10, 30) are acquired with a separation in time extending over months or years. The second set of seismic data (30) comprises at least one laterally extending series (40) of new seismic events (4) not present in the first set of seismic data (10). Reflection time shifts (22) are calculated as required for matching seismic reflections (31) of the second reflection traces (3) of the second seismic reflection date (11) of the first reflection traces (1). The calculated time shifts are conducted on said second reflection traces (3). The calculation of the time shifts (22) are made by calculating coefficients of basis function estimates.