Wavelets without Wells – Via Prestack Inversion

P301 WAVELETS WITHOUT WELLS – VIA PRESTACK INVERSION Summary 1 In this paper we demonstrate an inversion methodology to extract a source wavelet from each prestack gather. This inversion estimates and deconvolves the effective source contribution within an interval of interest at the same time characterizing AVO with high resolution. We demonstrate with field data that: (1) the wavelets estimated by inversion compare favorably with a wavelet derived from well control and (2) the inversion recovers wavelet phase to within at least 15° for these data. Since the inversion estimates a wavelet for each input gather one may also track