oa Seismic Differentiation - A Tool for Boosting Higher Frequencies

Absorption deconvolution designed on the basis of absorption parameter Q is used conventionally to compensate the apparent loss of higher frequencies in the earth. Determining Q from seismic data may be cumbersome and expensive, and sometimes erroneous. This paper describes an alternative approach to enhance the higher frequency content of the data by differentiating the trace itself. Though this process is theoretically known to introduce frequency-dependent phase distortion, it has been seen that either this problem is not very severe on real data or can greatly be overcome by introducing a minor constant static shift to data. This technique, while requiring no apriori information about Q., can result in enhancement of higher frequencies matching with Q-compensated sections. VSP corridor stack were also generated to visually judge the increase in high frequency content.