hydrogeological modeling of co storage at the basin scale ...€¦ · hydrogeological modeling of...
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![Page 1: Hydrogeological modeling of CO storage at the basin scale ...€¦ · Hydrogeological modeling of CO 2 storage at the basin scale: preliminary results on the Paris basin ULTimateCO2](https://reader034.vdocuments.us/reader034/viewer/2022042111/5e8cba00fcd82152610c55f9/html5/thumbnails/1.jpg)
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Hydrogeological modeling of CO2 storage at the basin scale:
preliminary results on the Paris basin
ULTimateCO2
“Understanding the Long Term fate of geologically stored CO2”
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Objective of the UltimateCO2 project
When?
Stabilization?
What if leakage (fault, wells)?
What is the uncertainty in the predictions?
How in a real injection site (gravity effect, brine migration)?
• Significantly advance our knowledge of processes that may affect the understanding of the long-term fate of geologically stored CO2
• Yield validated tools for predicting long-term storage site performance
• Develop guidelines for operators and regulators to enable a robust demonstration of the long-term storage site performance assessment
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Methodology
• Laboratory, field and modelling studies of: – trapping mechanisms in the reservoir (structural,
dissolution, residual and mineral [SDRM]) – fluid-rock interactions and effects on mechanical
integrity of the caprock – leakage associated with mechanical and chemical
damage in the well vicinity • Predictions more robust by
– addressing the uncertainty associated with numerical modelling at all stages
• Integration of the results – into assessing the overall long-term behaviour of
storage sites at basin scale in terms of efficiency and security
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List of participant
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ULTimateCO2 Project structure and WP Leaders
> 5
BGS
TNO
BRGM
IFPEN
PHIMECA
CO2SENSE
BRGM
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Hydrogeological modeling of the Paris basin
J.Delmas, P. Houel, J.M. Mengus, J.M. Daniel, X. Guichet, B. Doligez, N. Maurand, V. Teles
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CO2 plume vs Pressure pulse
simulated after 30 years of CO2 injection
100 km radial extent
Pressure disturbence could extend far beyond CO2 plume
=> need large scale (basin) hydrogeological modelling
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Initial conditions issue
P=1bar @0m
P=1bar @200m
T1, Salt1 T2, Salt2
P1 ≠ P2
Water flux
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Reservoir and basin scale issue
• Use of traditional reservoir fluid flow simulator for basin purpose is not adapted to initiate large scale hydrodynamism. – compute initial state by hydrostatic equilibrium – P=f(z, T, salt)
• At basin scale, due to variation of temperature, salinity, water entries depth – initial state by hydrostatic law will not represent basin state – need a dynamic equilibrium (run without injection/production) to
stabilize pressure and flow can be long • Basin pressure and salinity are the result of the basin history
and may not be in equilibrium with present-day conditions (local overpressures, salinity anomalies)
• reach the limits of traditional fluid flow simulator – help of basin simulation for initial state computation
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Objective
• WP2 – Coupling between basin simulation and reservoir simulation for CO2 modelling – Perform a basin simulation
• provides temperature, pressure and salinity fields at regional scale by simulating thermal and burial history of the basin
• Sets initial condition for the reservoir-scale model of CO2 injection
– Perform a CO2 injection model at reservoir-scale with initial data from the basin model
– Evaluate the pertinence of such coupled approach
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Basin modelling
• Study and model the formation and evolution of sedimentary basins
• To assess the burial and thermal history of a basin
• Tool widely used in Petroleum industry : – To get burial and thermal history of source rocks as
well as timing of hydrocarbons generation and migration paths of expelled hydrocarbons.
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• 1 - Reliable geological framework describing the present day geometry and lithology – Structural/Geometrical definition (well data, seismic, faults) – Stratigraphic sequence (porous/sealing layers, lithologies) – Constraining subsurface information (logs, pressures, fluid
properties)
• 2 - Reconstruct the evolution through time – Sequence stratigraphy (geological scenario) – Geodynamical information (faults movements, uplift, erosion) – Backstripping method
• 3 - Simulate the basin history with coupled physical equations – Forward modelling of fully-coupled equations (flow, compaction,
HC craking, migration)
Basin modelling principles
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1. define horizons in depth
2. assign facies to each layer
3. evaluate paleobathymetry of each layer
• 1 - Reliable geological framework describing the present day geometry and lithology
Basin modelling principles
Stratigraphy Structure map
Lithology map
Paleotopography map
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• 1 - Reliable geological framework describing the present day geometry and lithology
Basin modelling principles
Stratigraphy Structure map
Lithology map
Paleotopography map
4. reconstruct the geometry
Geologic model
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• 2 - Backstripping - A method to reconstruct past geometries from present day data – Hypothesis = Deposition occurs on a horizontal surface – Assumes a preservation of solid volume through time by decompaction according to facies – Further need: Account for missing volumes= past
erosions
Basin modelling principles
2D Paris basin
Porosity/depth curves
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8
Porosity(fraction)
Burial (
m)
saltmarlchalkcarbonate 100% calcitesandstoneshaly sandsand-shaleshale
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• 3 - Simulate the basin history with coupled physical equations – Forward modelling of coupled equations
Interactions in a basin through geological time
Basin modelling principles
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www.ultimateco2.eu B. Pascal A. Darcy K. v Terzaghi A. Arrhenius P. Laplace J. Fourier
• 3 - Simulate the basin history with coupled physical equations – Forward modelling of coupled equations
Basin modelling principles
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2D Paris Basin simulation - Temp & Pressure
Pressure
Temperature
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UltimateCO2 – WP2 – Task 1
Paris Basin 3D model
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Outcrop limit Outcrop limit + isobaths Outcrop limit + isobaths + faults
Repere K horizon
3D model of the Paris basin
Available Data - Outcrop maps - Thousands of wells and markers - Thickness maps - Faults 12 main horizons constructed with Skua™ software
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3D model of the Paris basin
12 main horizons constructed with Skua™ software
Bedrock Top Triassic Top Domerian
Top Jurassic Top Gault Shales Top Cretaceous Top Lutetian
Top Lias Top Dogger Repere K Top Upper Kimm
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Bedrock Top Triassic Top Domerian
Top Jurassic Top Gault Shales Top Cretaceous Top Lutetian
Top Lias Top Dogger Repere K Top Upper Kimm
3D model of the Paris basin
12 main horizons constructed with Skua™ software
Topography
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• Erosion maps for each discordance
• 15 Physiographic maps
3000
m.
3D model of the Paris basin
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Facies model
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• Perform the basin modelling – Integrate all data in the Basin modelling software
• Erosion, Lithology and Paleotopography maps • Porosity/Permeability vs depth laws from the 2D Paris
model – Reconstruct the evolution through time = Backstripping
method – Forward modelling of coupled equations
• Perform a CO2 injection model at reservoir-scale with initial data from the basin model
3D model of the Paris basin Next steps
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Conclusion
• For a long term accurate understanding of CO2 fate at large scale, we need to understand the geologicaly history of the sedimentary basin – basin simulation is an option for a proper initilisation of CO2
injection site hydrogeological properties – however, it requires a lot of datas and geological knowlegde
which makes it difficult to standardise