Comparison of synthetic seismograms referred to inhomogeneous medium

불균질 매질에 따른 인공 합성 탄성파 자료 비교

  • 김영완 (한국지질자원연구원 석유해저자원연구부) ;
  • 장성형 (한국지질자원연구원 석유해저자원연구부) ;
  • 윤왕중 (전남대학교 지구시스템공학과) ;
  • 서상용 (한국지질자원연구원 석유해저자원연구부)
  • Published : 2007.06.07

Abstract

Most of seismic reflection prospecting assumes subsurface formation to be homogeneous media. These models are not capable of estimating small scale heterogeneity which is verified by well log data or drilling core. And those synthetic seismograms by homogeneous media are limited to explain various changes at field data. So we developed a inhomogeneous velocity model which can estimate inhomogeneity of background medium to implement numerical modeling from homogeneous medium and inhomogeneous medium on the model. Background medium using three autocorrelation functions in order to generate inhomogeneous velocity media was according to dominant wavelength of background medium and correlation length of random medium. And then we compared shot gathers. The results show that numerical modeling implemented at inhomogeneous medium depicts complex wave propagation of field data.