Efficient Prestack Modeling And Imaging of Pegleg Multiples

We introduce an effficient linear operator for the “true relative amplitude” modeling and imaging of pegleg multiples. Applying the forward operator to primary reflections after normal moveout models the peglegs. Applying the adjoint operator to multiples produces events which are directly comparable to NMO'ed primaries. The kinematic component of our operator is an extension of the NMO equation which independently images “split” peglegs from a moderately heterogeneous earth. The amplitude component corrects multiples for their differences in angle-dependent reflection strength, relative to a primary. We illustrate the efficacy of our approach on 2D and 3D prestack field data examples.