Abstract

Seismic quality factor (Q)is a very useful parameter to shed light on lithology, porosity, and pore fluids etc. Several authors (Dasgupta, 1998; Sain et al., 2009; Sain and Singh, 2011) estimated Q from multi-channel seismic data. Here, we present a new approach for estimating Q along with reflection coefficient from offset-dependent amplitude data. Warner (1990) tries to get reflection coefficient by taking the ratio of primary and multiple reflection amplitudes. Often multiples are not visible on seismograms and they may lie beyond the record length. To avoid such problems, we propose to calculate the reflections coefficients at lithological boundaries from amplitudes of primary reflections only. The effectiveness of the approach has been demonstrated with a synthetic and real examples. Tests show promise that it determines interval Q values with reasonable accuracy