Work

Sealing Response of Pre-Fissured Opalinus Clay to CO2 Injection

Year: 2025

Type: conference-paper

Abstract: Fissures can have a significant impact on caprock integrity in the context of carbon capture and storage (CCS). In this campaign, the sealing capacity of a pre-fissured caprock material, the Opalinus Clay shale, is studied with real time x-ray imaging during CO2 injection. 3D image analysis of the acquired x-ray tomographies reveals that the pre-existing fissure drives the hydromechanical response of the material until a certain overpressure level after which, new breakthrough pathways are created though the matrix of the material.

Source: IOP Conference Series Earth and Environmental Science

DOI: 10.1088/1755-1315/1480/1/012065

Authors: E. Stavropoulou, L. Laloui

Institution: École Polytechnique Fédérale de Lausanne

Language: English

Topic: CO2 Sequestration and Geologic Interactions

Subfield: Environmental Engineering

Field: Environmental Science

Domain: Physical Sciences

SDG: Climate action

Open Access status: diamond

OpenAlex ID: W4409317511

FWCI:

Cites: 5

Cited by:

Related to: 10