Applicability of prestack equivalent offset migration of reflection seismic data

Hitoshi MIKADA; Danin JEON; Junichi TAKEKAWA

Presentation information

International Session (Oral)

Symbol S (Solid Earth Sciences) » S-TT Technology & Techniques

[S-TT13] Recent Advances in Exploration Geophysics (RAEG2015)

Thu. May 28, 2015 2:15 PM - 4:00 PM 102A (1F)

Convener:*Hitoshi Mikada(Kyoto University), Junichi Takekawa(Graduate School of Science, Kyoto University), Junzo Kasahara(University of Shizuoka, Faculty of Earth Scieces), Yoshihisa Iio(Disater Prevention Research Institute, Kyoto University), Yasuo Ogawa(Volcanic Fluid Research Center Tokyo Institute of Technology), Nobukazu Seama(Department of Earth and Planetary Sciences, Graduate School of Science, Kobe University), Tatsuya Sato(Geothermal Energy Research & Development Co., LTD.), Eiichi Asakawa(JGI, Incorporated), Chair:Ehsan Jamali Hondori(JGI, Inc.), Hitoshi Mikada(Kyoto University)

3:00 PM - 3:15 PM

[STT13-17] Applicability of prestack equivalent offset migration of reflection seismic data

Hitoshi MIKADA¹, Danin JEON¹, *Junichi TAKEKAWA¹ (1.Kyoto Univ.)

Keywords:Prestack equivalent offset migration, Common scattering point

Recently equivalent offset migration (EOM) has been applied to image the subsurface structure in seismic surveys. In the present study, we investigate the effectiveness of EOM for complex geological structures with inclined layers using numerical simulations. In our experiments, the geological boundaries have different dipping angles. We estimate the underground structure using EOM, and compare the result with that from dip moveout (DMO) which is a popular method for the dipping structures. The result of EOM achieve similar resolution to DMO whereas the computational cost of EOM is fifth part of that of DMO. Our result indicates that EOM has advantage over DMO.