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AAPG Bulletin

Abstract

AAPG Bulletin, V. 95, No. 4 (April 2011), P. 619648.

Copyright copy2011. The American Association of Petroleum Geologists. All rights reserved.

DOI:10.1306/09131009132

The impact of Previous HitfaultNext Hit envelope structure on fluid flow: A screening study using Previous HitfaultNext Hit facies

Muhammad Fachri,1 Jan Tveranger,2 Nestor Cardozo,3 Oystein Pettersen4

1Centre for Integrated Petroleum Research (CIPR), University of Bergen, Realfagbygget, Allegaten 41, N-5007 Bergen, Norway; present address: Department of Earth Science, University of Bergen, Realfagbygget, Allegaten 41, N-5007 Bergen, Norway; [email protected]
2Centre for Integrated Petroleum Research (CIPR), University of Bergen, Realfagbygget, Allegaten 41, N-5007 Bergen, Norway; [email protected]
3Department for Petroleum Engineering, University of Stavanger, 4036 Stavanger, Norway; [email protected]
4Centre for Integrated Petroleum Research (CIPR), University of Bergen, Realfagbygget, Allegaten 41, N-5007 Bergen, Norway; [email protected]

ABSTRACT

Structural elements of deformation-band Previous HitfaultNext Hit zones are implemented as volumetrically expressed building blocks, that is, Previous HitfaultNext Hit facies, in a series of synthetic reservoir geomodels and simulation models. The models are designed and built to reproduce a predefined range of Previous HitfaultNext Hit system configuration, sedimentary facies configuration, and Previous HitfaultNext Hit zone architecture. Using petrophysical properties derived from published field studies, the geomodel realizations are run in a reservoir simulator to monitor reservoir responses to variations in modeling factors. The modeled Previous HitfaultNext Hit zones act as dual barrier-conduit systems, resulting in simulation models that can capture contrasting waterfront velocities, changes in waterfront geometries, and flow channelizing and bifurcation in the Previous HitfaultNext Hit envelopes. The simulation models also show the development and sweep efficiency of bypassed oil and poorly swept regions because of the presence of the Previous HitfaultNext Hit zones. Statistical analysis reveals that the Previous HitfaultNext Hit facies modeling factors can be ranked according to impact on reservoir responses in the following descending order: Previous HitfaultNext Hit core thickness, the type of displacement function, sedimentary facies configuration, the fraction of total Previous HitfaultNext Hit throw accommodated by Previous HitfaultNext Hit core and damage zones, Previous HitfaultNext Hit system configuration, and maximum damage zone width. Previous HitFaultNext Hit core thickness is the most important factor because it governs the space available for fluid flow in the Previous HitfaultNext Hit-dip direction. Other modeling factors affect the reservoir responses by controlling the geometry and continuity of fluid flow paths in the modeled Previous HitfaultTop zones.

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