Three‐dimensional table‐driven migration

grave, Blacquie; re, Gerrit; Debeye, H.; Wapenaar, Kees; Berkhout, A. J.

doi:10.1190/1.1892461

Cited by 5 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Equation (13) can be performed in the frequency-space domain (e.g. Blacquiere et al, 1989;Wapenaar et al, 2014) or the frequency-wavenumber domain (e.g. Fu, 2006;Chen et al, 2017).…”

Section: L O S E D -L O O P F O Ca L B E a M S Ba S E D O N I T E Rmentioning

confidence: 99%

Order‐controlled closed‐loop focal beams and resolution comparison of primary and multiple reflections for seismic acquisition geometries

Wei

Blacquière

2020

Geophysical Prospecting

Self Cite

View full text Add to dashboard Cite

Focal beam analysis has built a bridge between the acquisition parameters on the surface and the image quality of underground targets. However, as a practical matter, it is still difficult to answer how to choose a proper acquisition geometry according to the complexity of medium, especially considering the contradictory effects of multiple reflections on spatial resolution as they can be considered to be either potential signal or additional noise, depending on the envisioned imaging technology. We introduce an order-controlled, closed-loop focal beam method in which the migration operator and the resolution function can be analysed in the process of the closed-loop migration with full control over the order of the surface and internal multiples considered. This method highlights the effects of primary and different-order multiple wavefields on the imaging resolution for different acquisition geometries and various overburden strata. We apply the method to analyse the predicted resolution of seismic acquisition geometries considering multiples as either noise or signal. Results show, in the acquisition geometry design, that when the primaries cannot provide a complete spatial illumination for the subsurface target, e.g. because of the limited-aperture acquisition geometries or the complicated overburden, we should use the closed-loop focal beam analysis to assess the contradictory effects of multiples as both signal and noise, in which the maximum order of multiples ought to be chosen according to the core aim of the acquisition analysis. We can apply the second-order closed-loop focal beam analysis to quantify the effects of acquisition geometries on multiple-wave suppression and can also perform the high-order closed-loop focal beam analysis to quantify the effects of acquisition geometries on high-resolution imaging (migration). This method can also be used to choose the optimal order of multiples in the closedloop migration.

show abstract

“…Equation (13) can be performed in the frequency-space domain (e.g. Blacquiere et al, 1989;Wapenaar et al, 2014) or the frequency-wavenumber domain (e.g. Fu, 2006;Chen et al, 2017).…”

Section: L O S E D -L O O P F O Ca L B E a M S Ba S E D O N I T E Rmentioning

confidence: 99%

Order‐controlled closed‐loop focal beams and resolution comparison of primary and multiple reflections for seismic acquisition geometries

Wei

Blacquière

2020

Geophysical Prospecting

Self Cite

View full text Add to dashboard Cite

show abstract

“…Examples of integral solutions include French (1974) and Schneider (1978); multistep solutions include Berkhout and de Jong (1981), Gibson, Larner and Levin (1983) and Dickinson (1988); f-k domain solutions include Herman et al (1982), Stolt (1978) and Wen, McMechan and Booth (1988). Papers presenting a variety of other perspectives and algorithms are Musgrave (1961), Sattlegger (1964), Jakubowicz and Levin (1983), Wen and McMechan (1987), Blacquière et al (1988), Karrenbach and Gardner (1988), Kitchenside (1988) and Chang and McMechan (1989a).…”

Section: Introductionmentioning

confidence: 99%

3D ACOUSTIC PRESTACK REVERSE‐TIME MIGRATION¹

Chang

McMechan

1990

Geophysical Prospecting

View full text Add to dashboard Cite

CHANG, W.F. and MCMECHAN, G. A. 1990. 3D acoustic prestack reverse-time migration. Geophysical Prospecting 38,737-755.A prestack reverse-time migration algorithm which operates on common-source gathers, recorded at the Earth's surface, from 3D structures, is conceived, implemented and tested. Reverse-time extrapolation of the recorded wavefield (a boundary-value problem), and computation of the excitation-time imaging condition for each point in a 3D volume (an initialvalue problem), are both performed using a second-order finite-difference solution of the full 3D scalar wave equation. The algorithm is illustrated by processing synthetic data for a point diffractor, an oblique wedge, and the French double dome and fault model.

show abstract

Recursive integral time extrapolation methods for scalar waves

Fowler¹,

Du²,

Fletcher³

2010

SEG Technical Program Expanded Abstracts 2010

View full text Add to dashboard Cite

We derive and compare a variety of algorithms for recursive time extrapolation of scalar waves using approximate operators derived from integral solutions of a wave equation. These methods fall into two categories: those based on combining or interpolating homogeneous solutions, and those based on series expansions of heterogeneous operators. The former suffer from oscillatory noise at large velocity discontinuities unless the time step is small, whereas the latter allow accurate extrapolation at large time steps, but are more costly.

show abstract

Three‐dimensional table‐driven migration

Cited by 5 publications

References 0 publications

Order‐controlled closed‐loop focal beams and resolution comparison of primary and multiple reflections for seismic acquisition geometries

Order‐controlled closed‐loop focal beams and resolution comparison of primary and multiple reflections for seismic acquisition geometries

3D ACOUSTIC PRESTACK REVERSE‐TIME MIGRATION¹

Recursive integral time extrapolation methods for scalar waves

Contact Info

Product

Resources

About

Three‐dimensional table‐driven migration

Cited by 5 publications

References 0 publications

Order‐controlled closed‐loop focal beams and resolution comparison of primary and multiple reflections for seismic acquisition geometries

Order‐controlled closed‐loop focal beams and resolution comparison of primary and multiple reflections for seismic acquisition geometries

3D ACOUSTIC PRESTACK REVERSE‐TIME MIGRATION1

Recursive integral time extrapolation methods for scalar waves

Contact Info

Product

Resources

About

3D ACOUSTIC PRESTACK REVERSE‐TIME MIGRATION¹