Seismic Inversion using full wavefied data
Most seismic migration methods stress primary reflection data, it means that multiples is considered as noise and need to be removed prior to migration process. In fact multiples contain important medium property information which can be utilized to improve the quality of image. By introducing a background model, the difference between the known background properties and unknown real medium properties is inverted. Each gridpoint act as a scatterer in the background media. In our work, Finite-difference contrast source inversion method will be applied in seismic inversion with full wavefield data including surface-related and internal multiples, without including explicit computation of forward problem at each iteration step, this method can employ an inhomogeneous background medium. By solving an optimization problem to reconstruct the contrast functionχ , which is a quantity having some connection with the real velocity distribution in the medium. Result of the process is an accurate angle-dependent reflectivity image as well as angle-dependent velocity model in subsurface.
migration inversion anisotropy multiple scatter
XiaoLiang Duan Yibo Wang Huizhu Yang
Department of Engineering mechanics,Tsinghua University,100084,China Institute of Geology and Geophysics,Chinese Academy of Sciences,100029,China
国际会议
北京
英文
1-6
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）