3D prestack depth migration with compensation for frequency dependent absorption and dispersion
TLDR
In this article, an efficient prestack beam Q migration approach was developed to compensate for the frequency dependent dissipation effects in the migration process, which can be used for amplitude preserving processing that is important for AVO analysis when transmission anomalies are present.Abstract:
Spatial variations in the transmission properties of the overburden cause seismic amplitude attenuation, wavelet phase distortion and seismic resolution reduction on deeper horizons. This poses problems for the seismic interpretation, tying of migration images with well-log data and AVO analysis. We developed an efficient prestack beam Q migration approach to compensate for the frequency dependent dissipation effects in the migration process. A 3D tomographic amplitude inversion approach may be used for the estimation of absorption model. Examples show that the method can mitigate these frequency dependent dissipation effects caused by transmission anomalies and should be considered as one of the processes for amplitude preserving processing that is important for AVO analysis when transmission anomalies are present.read more
Citations
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Proceedings ArticleDOI
Compensating for Visco-Acoustic Effects in TTI Reverse Time Migration
TL;DR: In this paper, a visco-acoustic wave equation in the time domain was derived and applied in a prestack reverse time migration to compensate for the anelastic effects in the seismic data.
Journal ArticleDOI
Q -compensated migration by Gaussian beam summation method
TL;DR: In this paper, a Gaussian beam summation method (MGBSM) was proposed to perform seismic data compensation for frequency dependent absorption and dispersion, which can overcome the problems of caustics, handle all arrivals, yield good images of steep flanks, and is readily extendible to target oriented implementation.
Journal ArticleDOI
Research progress on seismic imaging technology
Zhenchun Li,Yingming Qu +1 more
TL;DR: In this article , the authors summarized the development of the seismic imaging, overviewed the principles of three typical imaging methods, including common reflection surface (CRS) stack, migration-based Gaussian-beam migration (GBM) and reverse-time migration (RTM), and analyzed the imaging capability of GBM, RTM and LSRTM.
Patent
Method for survey data processing compensating for visco-acoustic effects in tilted transverse isotropy reverse time migration
Yi Xie,James Sun,Joe Zhou +2 more
TL;DR: In this paper, a method for survey data processing compensates for visco-acoustic effects in TTI medium in an RTM method employs propagating in conjugate medium to yield correct phase, and acoustic wave propagation through adaptive matching filtering.
Proceedings ArticleDOI
Use Q-RTM to Image Beneath Gas Hydrates In Alaminos Canyon, Gulf of Mexico
Yongping Chen,Yan Huang +1 more
TL;DR: Zhang et al. as discussed by the authors used a 3D Q-tomographic inversion to improve the structural definition and more uniform amplitude distribution for a more accurate and interpretable seismic section, which can reduce the energy loss and image distortion caused by the shallow gas hydrates.
References
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Journal ArticleDOI
Prestack Gaussian‐beam depth migration
TL;DR: In this paper, the authors proposed a beam superposition based beam migration method, which is an extension of Kirchhoff migration that overcomes many of the problems caused by multipathing.
Journal ArticleDOI
Preconditioning of full‐waveform inversion in viscoacoustic media
TL;DR: In this article, the inverse Hessian operator is used to derive frequency-dependent compensation for dispersion and attenuation, which requires two extra modeling steps with inverse absorption at each iteration.
Proceedings ArticleDOI
Amplitude and Bandwidth Recovery Beneath Gas Zones Using Kirchhoff Prestack Depth Q-Migration
TL;DR: In this article, a Kirchhoff approach was proposed to compute frequency-dependent traveltimes for geologic structures below a viscoaoustic overburden, which is important for account for amplitude dimming, frequency loss, and phase distortion.
Journal ArticleDOI
A simple design procedure for depth extrapolation operators that compensate for absorption and dispersion
TL;DR: In this paper, the effects of absorption and dispersion in deriving the space-frequency domain depth extrapolation operators were compensated by starting from the ones without such compensation. But the procedure is simple and requires only trivial cosine transforms applied to the original noncompensating operators.
Proceedings ArticleDOI
Tomographic residual curvature analysis: The process and its components
TL;DR: In this paper, the authors describe the components of seismic tomography and discuss residual curvature analysis (RCA) in detail, including building of the tomographic updating equations, regularization in both data and model spaces, and application of the least-squares solver.