Effects Of Layer Boundaries On Fwal And Dip Estimation (Oblique Events)

Abstract

Data recorded by the full waveform acoustic logging tool EVA shows events generated at acoustic layer boundaries. These can be interpreted as reflections on and transmissions through interfaces. Ray modelling shows that these events are very sensitive to the dip. After processing of an iso-offset section designed to enhance and separate such events, two sections are interpreted and the dip angles of the interfaces are estimated.