This is a Preprint and has not been peer reviewed. This is version 2 of this Preprint.
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Abstract
Direct wave arrivals are the most robust signals to determine velocity and consequently they have been used for almost a century in hydrocarbon exploration. The reason is simple as the arrivaltime is explicitly available and provide a direct measurement of the average velocity of the sub-surface ray-path. These signals have not been extensively used to estimate attenuation or Q. One reason may be that very few robust methods have been developed to estimate Q from these signals. The common method to estimate Q using data acquired from VSP measurements is relying on spectral ratios. This method is in general quite reliable whenever there is a signal that has a reasonably broad spectral support. I will show how a variation on the spectral ratio method that provides equal results while more robust and how it can be adapted for surface seismic measurement.
DOI
https://doi.org/10.31223/osf.io/zpx2w
Subjects
Applied Mathematics, Computational Engineering, Earth Sciences, Engineering, Geophysics and Seismology, Numerical Analysis and Computation, Physical Sciences and Mathematics
Keywords
seismic Q inversion
Dates
Published: 2020-07-30 23:52
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