Enhancing seismic reflection signal

탄성파 반사 신호 향상

  • 도안 후이 히엔 (한국지질자원연구원 석유해저자원연구부) ;
  • 장성형 (한국지질자원연구원 석유해저자원연구부) ;
  • 김영완 (한국지질자원연구원 석유해저자원연구부) ;
  • 서상용 (한국지질자원연구원 석유해저자원연구부)
  • Published : 2008.05.22

Abstract

Deconvolution is one of the most used techniques for processing seismic reflection data. It is applied to improve temporal resolution by wavelet shaping and removal of short period reverberations. Several deconvolution algorithms such as predicted, spike, minimum entropy deconvolution and so on has been proposed to obtain such above purposes. Among of them, $\iota_1$ norm proposed by Taylor et al., (1979) and used to compared to minimum entropy deconvolution by Sacchi et al., (1994) has given some advantages on time computing and high efficiency. Theoritically, the deconvolution can be considered as inversion technique to invert the single seismic trace to the reflectivity, but it has not been successfully adopted due to noisy signals of the real data set and unknown source wavelet. After stacking, the seismic traces are moved to zero offset, thus each seismic traces now can be a single trace that is created by convolving the seismic source wavelet and reflectivity. In this paper, the fundamental of $\iota_1$ norm deconvolution method will be introduced. The method will be tested by synthetic data and applied to improve the stacked section of gas hydrate.

Keywords