Attenuation of Residual Multiples and Coherent Noise in the Wavelet Transform Domain

P175 ATTENUATION OF RESIDUAL MULTIPLES AND COHERENT NOISE IN THE WAVELET TRANSFORM DOMAIN Introduction 1 Although generally very powerful noise and multiple attenuation techniques can often leave remnants in seismic data. For example noise from extraneous sources such as rigs and other boats can be hard to model and fully remove using standard methods. Similarly multiple remnants are often present after multiple attenuation when multiples are generated by relatively complex geology such as rugose water bottoms or salt and as such do not conform to the assumptions of most multiple attenuation algorithms. These remnants can cause problems in later processing