3D synthesized areal shot-record residual migration velocity analysis

Yang, Qing; Zhang, Shulun; Sun, Peiyong; Wu, Yanhui; Zhou, Ruihong

doi:10.1088/1742-2132/6/1/004

Cited by 4 publications

(3 citation statements)

References 9 publications

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“…Through the increasing availability of large-scale computing resources, three-dimensional (3-D) seismic modeling and migration [1,2] are now feasible. The 3-D Fourier method for one-way wave extrapolation presented in this paper is a generalization of the 2-D Fourier method [3] except that FFTW is used rather than general fast Fourier transforms (FFT).…”

Section: Introductionmentioning

confidence: 99%

3-D Poststack Migration Using the Adjoint Operator of Modeling

Yang¹

2016

Proceedings of the 2016 6th International Conference on Applied Science, Engineering and Technology

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Abstract. From the modeling operator, we derive its adjoint operator which is used to migrate 3-D poststack data. It forms a theoretical foundation for the reverse-time migration. The method would be helpful to get a new way to improve the result of conventional reverse-time migration. The inference of the adjoint operator is adaptive to other modeling method including both poststak modeling and prestack modeling. In this paper, we focus on poststack migration for 3-D problems. And the Fourier method for time stepping is discussed. Furthermore, we adopt the numerical software FFTW to perform Fourier transformation, with which the efficiency of the algorithm is greatly improved.

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Section: Introductionmentioning

confidence: 99%

3-D Poststack Migration Using the Adjoint Operator of Modeling

Yang¹

2016

Proceedings of the 2016 6th International Conference on Applied Science, Engineering and Technology

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“…This makes the areal shot record approach very attractive for the processing of 3-D data. The synthesized plane wave idea is also used in other cases such as velocity analysis [5] and modeling. In this paper, the synthesized plane wave method is used in the prestack reverse time migration.…”

Section: Introductionmentioning

confidence: 99%

Prestack Synthesized Arel Shot Record Reverse-time Migration

Yang¹

2016

Proceedings of the 2016 6th International Conference on Applied Science, Engineering and Technology

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Abstract. Reverse time migration allows steep dip imaging, any lateral velocity variation and correct amplitude and phase information at the same time. However, it is time consuming and requires large hard disk memories. To shorten the running time of prestack reverse time migration, we use synthesized areal shot source and record as the substitution of shot source and record in the prestack reverse time migration. The rightness of the method is derived. A numerical example on the Salt model shows the method works well.

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“…For example, it is hard to provide all point shot-records for testing areal shot-record migration for intolerable computation time. The use of linear shot-source is illuminated by the areal shot-record migration plus that in the residual migration velocity analysis [4] either of the pair of ray parameters is fixed. Then many computations are reduced and nearly a magnitude of computations is saved.…”

Section: Introductionmentioning

confidence: 99%

3-D linear shot-source modeling

Yang¹

2015

Proceedings of the First International Conference on Information Sciences, Machinery, Materials and Energy

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Abstract. Numerical methods using the linear shot sources are described for the simulation of 3-D wave phenomena with application to the modeling of seismic data. In the method, time stepping is performed with a second-order differencing operator. The use of linear source in modeling can efficiently provide data for testing some schemes that deal with the areal shot-records. The implementation of the methods is demonstrated on numerical examples.

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3D synthesized areal shot-record residual migration velocity analysis

Cited by 4 publications

References 9 publications

3-D Poststack Migration Using the Adjoint Operator of Modeling

3-D Poststack Migration Using the Adjoint Operator of Modeling

Prestack Synthesized Arel Shot Record Reverse-time Migration

3-D linear shot-source modeling

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