Influences of coarse grid selection on Kirchhoff beam migration
作者：LI Jiabin,SUN Hui,ZHANG Zhihou,HAN Fuxing,LIU Minchen
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 computational efficiency. Kirchhoff beam migration employs coarse grid techniques in several key steps such as traveltime 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 method. This paper will analyze this influence and illustrate the analysis results by the Marmousi data sets.
发文机构：Faculty of Geosciences and Environmental Engineering School of Resources and Environment College of Geo-Exploration Science and Technology
关键词：KIRCHHOFFBEAMMIGRATIONprestackdepthMIGRATIONcoarseGRIDSELECTIONBEAMpropagatorTRAVELTIMEcalculation
分类号： P631.4[天文地球—地质矿产勘探][天文地球—地质学]
- Application of isolation forest to extract multivariate anomalies from geochemical exploration data
- Zircon U-Pb geochronology and geochemistry of granite in Huoluotai area of northern Great Hinggan Range
- Geochronology and geochemistry of Baicaogou tuff in Yanji,NE China and its tectonic implications for Early Cretaceous
- Application of high-density resistivity method for assessing construction safety of Shimodong tunnel in Helong City of Jilin Province
- Computation of waves scattered by inhomogeneous velocity gradient using generalized Born approximation
- Combination of structure tensor and tilt angle in the edge detection of potential field data
- Method for predicting cuttings transport using artificial neural networks in foam drilling
- Logging interpretation method for reservoirs with complex pore structure in Mesozoic-Cenozoic faulted basin around Daqing exploration area
- Structure analysis of shale and prediction of shear wave velocity based on petrophysical model and neural network
- Geochronology,geochemistry and geological significance of Early Cretaceous volcanic rocks from Niangniangshan Formation,Ningwu Basin,middle and lower reaches of the Yangtze River