... varies during the year in function of the changes of air temperature until a depth known as thermal neutral layer (Fig. 1). For greater depths rock temperatures increase gradually due to the central heat of the Earth, but with variations from place to place, as a consequence of rock types, volcanic...

... pressure reaches the geostatic value, hydrofrac and reopening of the links between caverns prevent any further increase. Reservoir Characterization solution-mined cavern cavern Upstream Oil & Gas temperature increase MPa Completion Installation and Operations equilibrium pressure brine...