Nino Cilona (Shell)
Deformation bands are narrow tabular zones mm – to – cm thick, which can accommodate shear and/or volumetric strain by means of gran rearrangement, consequent pore collapse, and cataclasis. These structural features are very common in clastic sediments, but they can form also in granular carbonate media. Deformation bands can represent buffers for cross-flow and may cause compartmentalization or decrease in productivity of reservoirs. This contribution presents an overview of the literature on carbonate-hosted deformation bands, compares them to the clastic hosted deformation bands and highlights the main differences between natural and laboratory deformation bands. The final goal is trigger your curiosity on the role played by these sub-seismic features on productivity, injectivity and subsidence of porous reservoirs.
About the presenter
Antonino (Nino) Cilona got a PhD in structural geology and rock mechanics from the University of Camerino (Italy), worked as structural geologist for Midland Exploration Ldt., and then did a post-doc at Stanford University. In 2015 he joined Shell working on fault and fractures in carbonates, fault seal and machine learning applications for characterization of seismic and sub-seismic structures. He has recently joined the Reservoir Integrity and Containment Team as geomechanicist.