Robust Q estimation using surface seismic data

This is a Preprint and has not been peer reviewed. This is version 2 of this Preprint.


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Joakim Oscar Blanch


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.



Applied Mathematics, Computational Engineering, Earth Sciences, Engineering, Geophysics and Seismology, Numerical Analysis and Computation, Physical Sciences and Mathematics


seismic Q inversion


Published: 2020-07-30 09:52

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