Description

The primary objectives of FRACLAB include determining the fracture initiation pressure in caprock during CO₂ injection, examining fracture propagation under varying stress conditions, assessing the impact of supercritical CO₂ (scCO₂) and CO₂-brine interactions on rock mechanical properties, and evaluating the risk of induced fractures leading to CO₂ leakage in geological storage. In the experiment, CO₂ is injected into a borehole drilled within the core sample while the sample is subjected to triaxial stress conditions. This triaxial cell is equipped with acoustic emission sensors positioned around the sample sleeve to monitor fracture activity, along with P, S1, and S2 acoustic transducers mounted in the platens and axial and radial deformation sensors. These instruments provide real-time monitoring of fracture mechanics and stress evolution, enabling precise analysis of fracture initiation, propagation, and rock deformation under controlled conditions.

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