Porosity modelling of the Bunter sandstone. © BGS

Work Package 3

"To be in a position to ensure safe and efficient geological storage, we need to fully understand what goes on deep down in the storage reservoir, how the injected CO2 is trapped... and for how long... "

Reservoir trapping evolution

Lead: BGS

Participants: BRGM, BGR, BGS, GEOGREEN, GEUS, IFPEN, PHIMECA, TNO

ObjectivesEvolution of CO2 trapping mechanisms in the reservoir with time. ©??

  • To increase the demonstration of the safety of reservoir trapping, leading to an improved evidence-base for permanent containment through better constrained quantitative prediction of long-term CO2 behaviour within the reservoir.
  • To demonstrate the range, relative importance and uncertainties of reservoir trapping mechanisms at specific planned large-scale CO2 storage sites at sites selected for future storage,
  • To provide static models for evaluation of SRDM trapping at reservoir scales
  • To assess specific chemical processes in storage formations over long time scales
  • To integrate results and identify broader generic lessons learned for inclusion in WP7.

This WP extends our understanding of fundamental long-term physical and geochemical trapping processes, with application to geological contexts similar to planned storage sites. Specifically we will establish the geo-technical criteria and associated levels of confidence needed to ensure successful site liability transfer.
We will achieve this through a combination of site-specific predictive dynamic modelling (WP3.2) which is reliant on static model construction and refinement (WP3.1). This will be supported by targeted experimental investigations of specific, as yet insufficiently addressed, processes (WP3.3) and examination of long-term
end-members of permanent CO2 containment via naturally CO2 rich natural analogue fields (WP3.4), both supported by modelling of key geochemical and  hydrogeological processes. Results will be integrated, including an assessment of associated uncertainties to produce key lessons learned for WP7 (WP3.5).

Tasks

Core data used to assess the regional impact of CO2 on reservoirs. ©BGS

  • Task 3.1: Static modelling for structural trapping estimates (integration of field data with similar contexts to true storage sites)
  • Task 3.2: Dynamic modelling of the long-term SRDM trapping mechanisms
  • Task 3.3: Evaluation of long-term chemical processes occurrences in storage formation
  • Task 3.4: Evidence for long-term trapping evolution in storage formation reservoir
  • Task 3.5 Synthesis of results

Click here to see the WP3 List of Deliverables

 

Contact: Jonathan Pearce, BGS

Dernière mise à jour le 18.08.2015