3D Marchenko redatuming using 2D and 3D seismic data

Marchenko methods are novel data driven techniques that accurately redatum wavefields to chosen points inside the subsurface. These redatumed wavefields are exactly the information required to construct images that are free of artefacts caused by internal multiples. The novelty of these methods means that most existing examples are limited to two-dimensional data. In this article we apply Marchenko methods to three-dimensional seismic data, seismic wavefields and subsurface structures. We first show that the same relationships for redatuming sources to chosen subsurface points is possible when the problem is three-dimensional. We then consider the implications of using linear-array, 2D-seismic data in a world with three-dimensional wave propagation. The results show that whilst it is still possible to redatum wavefields using Marchenko methods, applying a phase and amplitude correction to the input data improves the accuracy of this process and reduces the misfit between true and calculated (synthetic) solutions by 28%.