Multiscale Fracture Analysis in a Reservoir-Scale Carbonate Platform Exposure (Sorrento Peninsula, Italy): Implications for Fluid Flow
Tóm tắt
We derive the discrete fracture network (DFN) of a Lower Cretaceous carbonate platform succession exposed at Mt. Faito (Southern Apennines), which represents a good outcrop analogue of the coeval productive units of the buried Apulian Platform in the Basilicata oilfields. A stochastic distribution of joints has been derived by sampling at two different scales of observation. At the outcrop scale, we measured fracture attributes by means of scan lines. At a larger scale, we extracted fracture attributes from a 3D model. This multiscale survey showed the occurrence of an arresting bed for through-going fractures, which is characterized by a low relative permeability, determining a vertical compartmentalization. The DFN model, obtained by integrating fieldwork and numerical modelling by means of the 3D-Move® software, shows a well-defined relationship of permeability and fracture porosity with the relative connectivity of the fracture network. The latter is influenced by the length and aperture and to a lesser extent by the fracture intensity. The permeability distribution obtained for our outcrop analogue can be used to inform modelling of the Basilicata oilfield reservoirs, although the different burial history between the exposed Apennine Platform and the buried Apulian Platform must be taken into account.
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Tài liệu tham khảo
1987
1987, 2
1966
1996, AAPG Bulletin, 80, 1565
2017, Journal of Structural Geology
2002, Journal of Geophysical Research: Solid Earth, 107, 4
2006, 261
1962, Bollettino della Società dei naturalisti in Napoli, 3
1987, Societα Geologica Italiana, 40, 251
1993, Rivista Italiana di Paleontologia e Stratigrafia, 99, 57
2008, Rendiconti Online Societa Geologica Italiana, 2, 109
2004, Applying thick-skinned tectonic models to the Apennine thrust belt of Italy Limitations and implications, 647
2009
2007