Fig. 2.
The image has two parts. Part a shows a cylindrical pressure vessel mounted on a steel frame. The overall height is 2.25 metres. The outer diameter is 1.20 metres and the inner diameter is 1.00 metre. Two internal vertical sections are labelled as 0.79 metres and 0.55 metres. Part b shows a cutaway schematic of the internal experimental model with a total width of 1.00 metre. The upper layer is labelled overburden with a thickness of 0.05 metres. The middle layer is labelled caprock with a thickness of 0.15 metres. The lower layer is labelled reservoir with a thickness of 0.35 metres. Carbon dioxide is injected from the top centre into the reservoir and is shown spreading outward. Optical fibre lines, pressure transducers, pore pressure and volume control units, and water connections are shown on the sides. A piston at the base applies upward axial stress, indicated by arrows.Experimental setup: (a) 3D representation of the metre-scale oedometer with transparent cylindrical cell to display the three-layered sample; (b) vertical middle cut (red window orientation in (a)) of the setup demonstrating the hydromechanical boundary conditions and monitoring elements