Bringing New Clarity to the Campos Basin Using Broadband and TTI Imaging: A Case Study

The Campos Basin, offshore Brazil, has generated significant exploration interest after several discoveries, most recently the Pao de Acucar well in 2012. The basin is entirely covered with 2D data, and in addition modern 3D data has been acquired over some areas. In this paper, we present images from the Olho de Boi 3D survey acquired from November 2013 to March 2014. The better quality of the new images available in this area will significantly improve the understanding of the petroleum system. This paper will discuss key technologies applied to the processing of the 3D survey: 1) Broadband acquisition and processing: slant cable acquisition and fully deghosted solution in tau-theta domain (source and receiver deghosting) 2) Tilted-Transverse Isotropic (TTI) model building and imaging Finally, we compare the 3D PSDM to 2D PSDM lines with conventional pre-processing. Broadband 3D acquisition and processing combined with imaging algorithms like TTI Kirchhoff, TTI RTM PSDM and Delayed Imaging Time (DIT) scans bring new clarity to the presalt and post salt