Real Time Navigation in Complex Deltaic Scenario: The Role of Multiscale Approach for Geosteering Optimisation

This extended abstract would like to illustrate how the continuous interaction between multiple expertise, and the evaluation of datasets coming from different scales of investigation, is the key to face complex geological scenarios during operational activities. The reservoir target is part of a deltaic system, prograding along well azimuth and constituted by oil-bearing sandstones. Once drilled the top, the reservoir appeared very different and more complex than expectations, with the risk of compromise the whole operation and well success. Conversely, the continuous interaction between different scale domains such as logs, azimuthal images, UDAR inversion, 3D Geological model and Seismic, permitted to make the picture brighter and react in time for optimize the well placement, with further relevant good production results.