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7th Middle East Geosciences Conference and Exhibition
Manama, Bahrain
March 27-29, 2006
Seismic
Rock Property Inversions:
Practical Workflows for Middle East Reservoirs
Reservoir Modelling Advisor, Ødegaard A/S, Titangade 15, Copenhagen N DK-2200 Denmark, phone:
+47 93888347, [email protected]
Utilizing robust seismic
reservoir characterization outputs as inputs to detailed reservoir models is not a new or particularly
difficult concept to understand. The application of this workflow is, unfortunately, under -utilized by both exploration and
development asset teams.
Seismic
data
provides excellent spatial resolution for structural
interpretation
, and
seismic
inversion processing, especially
AVO inversions to rock property cubes, provides tremendous insight into the spatial distributions of reservoir rock properties
and fluids in two-way time.
Well log data
and their derived interpretations (petrophysics, facies, rock physics, etc.) provide excellent vertical resolution
and insight into the distribution of the logs and interpreted variables at the well locations.
High vertical resolution reservoir modelling is often performed based solely on mapping and well-log interpretations without
direct integration with seismic
reservoir characterization results, leading to discipline independent 3D models generated
through interpolation or geostatistical modelling.
The reservoir modelling workflow described provides integrated reservoir models which couple the spatial coverage of 3D
seismic
inversions with high vertical resolution reservoir modelling through applications of conditional geostatistical
simulation techniques.
This paper presents several carbonate workflow examples from the Middle East and the North Sea which incorporate
seismic
reservoir characterization such as full stack impedance and AVO rock property inversions with high resolution
geostatistical analysis and conditional stochastic simulation of petrophysical
data
.