A method of directly extracting multiwave angle-domain common-image gathers

Han, J.; Wang, Y.

doi:10.1007/s11600-017-0076-z

Artykuł - szczegóły

Tytuł artykułu

A method of directly extracting multiwave angle-domain common-image gathers

Autorzy

Han J. , Wang Y.

Wybrane pełne teksty z tego czasopisma

https://www.springer.com/journal/11600

Identyfikatory

DOI

10.1007/s11600-017-0076-z

Warianty tytułu

Języki publikacji

Abstrakty

Angle-domain common-image gathers (ADCIGs) can provide an effective way for migration velocity analysis and amplitude versus angle analysis in oil-gas seismic exploration. On the basis of multi-component Gaussian beam prestack depth migration (GB-PSDM), an alternative method of directly extracting multiwave ADCIGs is presented in this pa-per. We first introduce multi-component GB-PSDM, where a wavefield separation is proceeded to obtain the separated PP- and PS-wave seismic records before migration imaging for multiwave seismic data. Then, the principle of extracting PP- and PS-ADCIGs using GB-PSDM is pre-sented. The propagation angle can be obtained using the real-value travel time of Gaussian beam in the course of GB-PSDM, which can be used to calculate the incidence and reflection angles. Two kinds of ADCIGs can be extracted for the PS-wave, one of which is P-wave incidence ADCIGs and the other one is S-wave reflection ADCIGs. In this paper, we use the incident angle to plot the ADCIGs for both PP- and PS-waves. Finally, tests of synthetic examples show that the method introduced here is accu-rate and effective.

Słowa kluczowe

Gaussian beam angle of incidence angle-domain common-image gathers multiwave

wiązka gaussowska kąt padania

Wydawca

Instytut Geofizyki PAN
Springer

Czasopismo

Acta Geophysica

Rocznik

2017

Tom

Vol. 65, no. 5

Strony

1009--1017

Opis fizyczny

Bibliogr. 38 poz.

Twórcy

autor

Han J.

hanjianguang613@163.com

Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China

autor

Wang Y.

School of Geophysics and Information Technology, China University of Geosciences, Beijing, China

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018)

Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-d2774207-69fa-4bc4-bb0c-c36e8d261dbb