Dirk-Jan Walstra (Deltares/Delft University of Technology)
Joep Storms (Delft University of Technology)
Andrea Forzoni (Deltares)
Overview of development and plans for the application of Delft3D numerical analogues to
reservoir geology
(Why) Is there a need for process-
modeling?
Stochastic representation of the Holocene Po delta based on
144 CPT’s and 8 cores
Stochastic model of the Holocene Po delta (Italy) Janszen, 2008
1 datapoint / 2.5 km2
15 km 25 km
25 m
Collaborative research
• Integration of multiple disciplines (morphology, geology, hydrodynamics)
• Developing a track record in the oil industry
– Since 2006 Statoil (2 Phd’s, 4 MSc’s & 1 Postdoc)
– 2012 - 2015 ConocoPhilips
– Since 2013 Shell (1 Phd in collaboration with TUDelft)
• Academic alliances – TUDelft, UUtrecht, Unesco-IHE Phd’s, Msc’s, staff exchange
– NCED(2) Support 1 Post Doc (50%) Nathanael Geleynse
Model components
bottom depth
current waves
sediment transport
bottom change &
Stratigraphy
up
sca
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y
Approach to P.B. Forward Long-term modelling
• Simple schematised cases (proof of concept)
• Resemble empirical (equilibrium) relations
• Identify dominant mechanisms (e.g. forcing or paleostratigraphy)
• Identification of equilibrium
• Impact of modified forcing on morphology and stratigraphy
• Interpretation based on patterns and aggregated results
Trend analysis (next talks of Liang and Helena)
Delft3D in a geological context • Pro’s
– process-based
– Details (vertical resolution)
– Consistent (4-D)
• Cons
– Heavy CPU
– Still limited in time scales
– No conditioning (i.e. exact reproduction of core data)
Delft3D in a geological context
Reservoir-scale basin infill realistic auto- and allogenic delta evolution and behavior: e.g. avulsions, bifurcations, mouth bar formation, prodelta and deltafront formation, sediment sorting, channel-, levee- and deltaplain sedimentation, …
Full Numerical Analogues (4-D) Sandbody Properties Geometries Connectivity, Channel networks, etc. Statistics (e.g. pixel and object based reservoir modeling in Petrel or RMS)
Need for Delft3D-GT
• Unlocking Delft3D for reservoir geologists – Model Wizard
– Database management
– Integrated Post-processing tools
– Data mining (trends)
– Online sharing Online Tool (OS independent)
• Open Source (CPU and data storage not included!)
Architecture
Run
Client 1
3TU Data center
Client 2
Webserver: - Web GUI - Python - Local Delft3D
(Local) computer cluster or cloud with Delft3D & Python
Central webserver
(Local) computer cluster with Delft3D & Python
Load/publish
Delft3D-GT • Web interface
• Scenario builder (preparation of multiple runs)
• Execution of runs • Scripting facility (Python)
• Online central datalab
• One database: easy to share • Option to make parts of database
private (but central admin) • Option to search parallel through
private and public (based on user rights) • Data mining
– Standard post-processing – Scripting facility (Python)
• Export facility (Petrel, RMS, etc.)