UK Seismic Exploration Using Optimisation of Conventional and Over Under Source, Cable Depths

摘要

Geophysicists are commonly faced with the challenge of improving low frequency signal without compromising higher frequency signal. Scattering and attenuation in basalt or salt often restricts recordable reflection energy to only a few tens of Hz. However, a greater bandwidth may also be recordable and necessary for shallow reservoir targets or shallow velocity model building for depth imaging. Enhancing low frequency energy helps to compensate for the effects of scattering and attenuation of primary signal and therefore improve total signal to noise ratio. Designing surveys that achieve both objectives is challenging and is particularly hampered by the effects of source and cable ghosts.