Influences of coarse grid selection on Kirchhoff beam migration

doi:10.3969/j.issn.1673-9736.2019.01.04

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世界地质(英文版) ›› 2019, Vol. 22 ›› Issue (1) : 29-35. DOI: 10.3969/j.issn.1673-9736.2019.01.04

论文

Influences of coarse grid selection on Kirchhoff beam migration

LI Jiabin¹, SUN Hui^1,2, ZHANG Zhihou¹, HAN Fuxing³, LIU Minchen³

作者信息 +

Influences of coarse grid selection on Kirchhoff beam migration

LI Jiabin¹, SUN Hui^1,2, ZHANG Zhihou¹, HAN Fuxing³, LIU Minchen³

Author information +

文章历史 +

摘要

Kirchhoff beam migration is a beam migration method,which focuses on rapid imaging of geological structures.Although this imaging method ignores the amplitude information in the calculation process,it can calculate multi-arrival traveltime.This migration method takes into account both imaging accuracy and computa-tional efficiency.Kirchhoff beam migration employs coarse grid techniques in several key steps such as travel-time calculation,weight function calculation,and imaging calculation.The selection of the coarse mesh size has an important influence on the computational efficiency and imaging accuracy of the migration imaging meth-od.This paper will analyze this influence and illustrate the analysis results by the Marmousi data sets.

Abstract

导出引用

LI Jiabin, SUN Hui, ZHANG Zhihou, HAN Fuxing, LIU Minchen. Influences of coarse grid selection on Kirchhoff beam migration[J]. 世界地质(英文版). 2019, 22(1): 29-35 https://doi.org/10.3969/j.issn.1673-9736.2019.01.04

LI Jiabin, SUN Hui, ZHANG Zhihou, HAN Fuxing, LIU Minchen. Influences of coarse grid selection on Kirchhoff beam migration[J]. Global Geology. 2019, 22(1): 29-35 https://doi.org/10.3969/j.issn.1673-9736.2019.01.04

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基金

Supported by projects of the Natural Science Foundation of China (No.41804100),the China Postdoctoral Science Foundation (No.2018M640910) and the Fundamental Research Funds for the Central Universities (No.2682018CX36).