--> Abstract: Extensional Faults in Sandstone – Analogue Input Data to Volumetric Fault Reservoir Grids, by Alvar Braathen, Jan Tveranger, Haakon Fossen, and Magne Espedal; #90072 (2007)
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Extensional Faults in Sandstone – Analogue Input Data to Volumetric Previous HitFaultNext Hit Reservoir Grids

Alvar Braathen1, Jan Tveranger2, Haakon Fossen3, and Magne Espedal2
1University Centre in Svalbard, Longyearbyen, Norway
2Center for Integrated Petroleum Research (CIPR), University of Bergen, Bergen, Norway
3University of Bergen, Bergen, Norway

The concept of Previous HitfaultNext Hit facies modelling address the fact that Previous HitfaultNext Hit structures are generally modeled in production flow simulators using transmissibility multipliers. A more realistic representation of Previous HitfaultNext Hit structures requires consideration of the full spatial distribution of Previous HitfaultNext Hit rocks and the properties of faults as such. Volumetric Previous HitfaultNext Hit evaluations necessitate reservoir grids of faults and conditioning of this grid. The conditioned grid has to be populated with distinct Previous HitfaultNext Hit facies, which are based in analogue databases.
The concept of Previous HitfaultNext Hit facies encompasses the deformational products of any host rock volume affected by a Previous HitfaultNext Hit. The presented facies database describes extensional faults in sand-shale sequences, with datasets from Sinai, Utah, Corsica, and Norway. The analogue database is organized from the Previous HitfaultNext Hit envelope downwards into core and surrounding damage zone, and further into Associations that consist of one or more Previous HitFaultNext Hit Facies. For example, the Core Architectural Element is commonly made up of various Previous HitfaultNext Hit rock membranes, lenses, and fracture and deformation band sets. By considering for example lenses of host sandstone as one facies association, several facies can be identified, based in the occurrence of deformation band sets within the lenses. Statistical analysis of the Previous HitfaultNext Hit facies database establishes dimensions, geometries and scales of various structural elements. Critical assessments of length and width relations of core and damage zone reveal complementary empirical trends.
In total, Previous HitfaultNext Hit facies modelling represents a powerful reservoir assessment tool. It opens for evaluation of Previous HitfaultTop-parallel flow, capillarity effects and communication between non-juxtaposed cells.


AAPG Search and Discovery Article #90072 © 2007 AAPG and AAPG European Region Conference, Athens, Greece