Schlumberger

Technical Paper: Seismic Resolution: Thinner Than First Believed

Society: SEG
Paper Number:
Presentation Date: 2009
 

Ever since the time of Widess(1973), seismic resolution of thin layers was limited to measuring the length of the wavelet. The idea that the waveform remains stable within less than a ¼ wavelength has been apart of the seismic literature since 1973. Building on these foundations, Greg Partyka(1999) furthered our understanding by incorporating discrete Fourier transforms (DFT). This process inferred below these limits by using the tuning affect of frequency. Most of today’s geophysicists believe a ¼ wavelength is a barrier and thickness of sediment cannot be determined below this limit but inferred. The ideas contained in this paper state we can go beyond this barrier. We can determine the thickness of these two interfaces by analyzing changes of the slope on the wavelet’s side lobes when the wavelets of these two interfaces merge, and bringing us much closer then we ever considered before.

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