Complex Reservoirs Need G & G – An Example of a Multidisciplinary Workflow from Offshore Brazil

While exploring for hydrocarbons in rift related basins, volcanics, volcaniclastics and their erosional products are common lithologies. The presence of rock types derived from volcanism or affected by post-volcanic re-deposition may lead to complex lithologies with complex diagenetic overprints at the reservoir level. In most cases highly varied lithologies with wide ranges of inherent rock properties occur. <br>The Santos Basin contains complex reservoir sandstones deposited during a period of active volcanism. This paper summarises previously presented talks with special emphasis on the multidisciplinary approach required to succeed with seismic interpretation.<br>