The sealing is tight

- CO2 mixed with formation water does not geochemically alter the seals to such an extent that they leak, summarizes Professor of Geology Per Aagaard, and adds: Although these promising results of the SSC-Ramore project, we still do need more knowledge of the process involved in the sealing caprock above the CO2 reservoir to be certain that the sealing is tight and CO2 stays in place. Now our research focus has somewhat shifted towards how the geomechanical properties change with diagenetic processes (cementation) and structural deformation processes.

7-8 years ago, when the planning of the SSC-Ramore project started, IPCC pointed out important knowledge gaps prior to deployment of carbon capture and storage (CCS) to reduce the CO2 emissions to the atmosphere (IPCC 2005). To evaluate potential CO2 leakage from subsurface storage of CO2, SSC-RAMORE focused on the geochemical interaction of CO2 in formation water with caprocks and with engineered materials in wells, as well as with the corresponding changes in geo-mechanical properties. Furthermore, the project carried out simulations of injected CO2 in reservoir models to improve monitoring of CO2 reservoirs, and developed a methodology for risk assessments of CO2 storage in the subsurface.

Per Aagaard led the SSC-Ramore project at University of Oslo, establishing good cooperation between the research partners and making a fundament for the FME Success which he now leads scientifically for the Oslo group. SSC-Ramore is now ending with the last PhD-dissertations.

The final report summarizing the main results of the SSC-Ramore project may be downloaded, see link below.

Reference:

Summarizing the SSC-RAMORE project - Final report, Subsurface Storage of CO2 - Risk Assessment, MOnitoring and REmediation (SSC-RAMORE)

 

Tags: CO2 storage, CO2 sequestration, Gas-fluid-rock interactions
Published Oct. 25, 2019 12:37 PM - Last modified Apr. 1, 2022 3:16 PM