True-amplitude single-stack redatuming

Pila, Matheus F.; Schleicher, Jörg; Novais, Amélia; Coimbra, Tiago A.

doi:10.1016/j.jappgeo.2014.03.010

Cited by 10 publications

(9 citation statements)

References 20 publications

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“…The remaining errors in the redatuming approach can be attributed to two effects. Most prominently, the single-stack redatuming operation of Pila et al (2014) used here was derived for zero offset, leading to an increasing error with offset. Moreover, traveltime picking errors cannot be completely discarded.…”

Section: Resultsmentioning

confidence: 99%

“…In this section, we describe our methodology to estimate the Q factor based on the PFS method of Zhang and Ulrych (2002) together with the single-stack redatuming operator (Schneider, 1978;Pila et al, 2014;Oliveira et al, 2015). The corresponding processing sequence iteratively uses redatuming to obtain the correct traveltime arrival and then, in the next stage, uses the PFS method to estimate the quality factor.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

“…In previous works (Pila et al, 2014;Oliveira et al, 2015), the true-amplitude single-stack zerooffset redatuming operator has been developed to recover the amplitude related to the geometric spreading in the zero-offset domain. In other words, a dynamic correction of the signal was performed.…”

Section: Redatuming Operatormentioning

confidence: 99%

“…Here, we combine the PFS method developed by Zhang and Ulrych (2002) with the redatuming operator (Schneider, 1978;Berryhill, 1984;Pila et al, 2014;Oliveira et al, 2015) to optimize estimation of the Q factor from seismic surface data. In our approach, the redatuming operator plays the important role of correcting the straight-ray (SR) approximation for traveltimes, as considered in the PFS implementation according to Zhang and Ulrych (2002).…”

Section: Introductionmentioning

confidence: 99%

“…In our approach, the redatuming operator plays the important role of correcting the straight-ray (SR) approximation for traveltimes, as considered in the PFS implementation according to Zhang and Ulrych (2002). From a dynamic point of view, the redatuming operator has been developed to recover the true amplitude (by means of a geometric spreading correction) in the zero-offset domain (Schneider, 1978;Pila et al, 2014;Oliveira et al, 2015). In this work, we have used this operator in the kinematic sense, getting rid of any limitations concerning the offset.…”

Section: Introductionmentioning

confidence: 99%

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Estimation of quality factor based on peak frequency-shift method and redatuming operator: Application in real data set

et al. 2017

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Quality factor estimation and correction are necessary to compensate the seismic energy dissipated during acoustic-/ elastic-wave propagation in the earth. In this process, known as Q-filtering in the realm of seismic processing, the main goal is to improve the resolution of the seismic signal, as well as to recover part of the energy dissipated by the anelastic attenuation. We have found a way to improve Q-factor estimation from seismic reflection data. Our methodology is based on the combination of the peak-frequency-shift (PFS) method and the redatuming operator. Our innovation is in the way we correct traveltimes when the medium consists of many layers. In other words, the correction of the traveltime table used in the PFS method is performed using the redatuming operator. This operation, performed iteratively, allows a more accurate estimation of the Q factor layer by layer. Applications to synthetic and real data (Viking Graben) reveal the feasibility of our analysis.

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Section: Resultsmentioning

confidence: 99%