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ANR funded project

Systèmes Energétiques et Décarbonés (SEED) 2012
Projet H-CUBE

Hydrodynamics, Heterogeneity and Homogenization in modeling of CO2 storage into saline aquifer

As mentioned by the CO2 geological storage directive, dynamic modelling is part of the needs required to characterise and to assess the potential storage complex and surrounding area, and appropriate physical and numerical modelling techniques are required. The main goal of the present project is to provide, at the different scales of interest, appropriate models for the accurate simulation of the hydrodynamic behaviour of CO2 storage in saline aquifer. By integrating heterogeneity of the geological formation both at the meso-scale and at large basin scale domain, the H-CUBE project intends to capture correctly and to improve the estimates of (i) the hydrodynamic impacts associated with CO2 storage operations (aquifer pressurization and induced brine displacements), (ii) the CO2 plume migration and (iii) the associated CO2 capacity storage performance.
In this framework several innovative methods will be developed such as:
- homogenization (whether physical or numerical) techniques to upscale physical processes specific to CO2 storage in saline aquifers, i.e. two-phase flow properties (relative permeabilities, capillary pressure), CO2 dissolution in brine, and gravity forces;
- ranking techniques based on the static (topological descriptors) and dynamic (single phase flow response) properties of the reservoir to reduce the number of realizations to be run in a full mode (including the whole physics) when considering multi-realizations of heterogeneity field distribution on the same geological model;
- innovative multi mesh methods extended to compositional modelling which combines the use of a coarse mesh for solving the most time consuming step, i.e. the pressure field, while the compositions equations (and phase saturations) are updated on the fine mesh; in parallel smart meshing methods will be evaluated using local mesh refinement combined with grid coarsening.
A complete framework from field observation (digital outcrops models at the meter scale) to static geological models built at large aquifer-scale is proposed. Six case studies combining series of 2D and 3D geological static heterogeneous data set model will be used to evaluate the performance of such investigations based on three relevant geological contexts:
- Stratified shale heterogeneity in unconsolidated sandy aquifer with a variability of distribution (analogue: Sleipner offshore platform, in North Sea, Norway);
- Fluvial sediment deposits including slopping formations (analogue: Ketzin site in Germany and the Triassic sandstone in France);
- Carbonated aquifers (analogue: Weyburn in Canada and the Dogger formation in the Paris basin).
Finally, to improve the confidence in the multiphase flow transport simulation and to answer some aspects of the Storage Directive on the dynamic modelling assessment of the storage complex, a recommendation guidelines based on the findings of the project will be eventually provided as a workflow of criteria to evaluate the relevance and the quality of the simulations results of the hydrodynamic impacts during CO2 storage as targeted in the project.

Partners

BRGM Bureau de Recherches Géologiques et Minières

CNRS DR12 - CEREGE Centre National de la Recherche Scientifique délégation Provence et Corse - Centre Européen de Recherche et d’Enseignement des Géosciences de l’Environnement

LSCE Laboratoire des Sciences du Climat et de l’Environnement

Terra 3E Terra 3E SAS

ANR grant: 636 550 euros
Beginning and duration: janvier 2013 - 48 mois

 

ANR Programme: Systèmes Energétiques et Décarbonés (SEED) 2012

Project ID: ANR-12-SEED-0006

Project coordinator:
Monsieur Pascal AUDIGANE (Bureau de Recherches Géologiques et Minières)
p.audigane@nullbrgm.fr

 

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The project coordinator is the author of this abstract and is therefore responsible for the content of the summary. The ANR disclaims all responsibility in connection with its content.