The importance of local thermal non-equilibrium in the modeling of a fractured hot dry rock reservoir

Rachel Gelet (1) , Benjamin Loret (2, 3)

1 IEG - Interactions Eau-Geomatériaux
2 3SR - Laboratoire sols, solides, structures - risques [Grenoble]
3 GéoMécanique

Thermal recovery from a HDR reservoir, viewed as a deformable fractured medium, is investigated with a focus on the assumption of local thermal non-equilibrium. The numerical model is used to investigate the coupled thermo-hydro-mechanical behavior of the Fenton Hill site. The time profile of the outlet fluid temperature displays a double-step pattern, a feature which is interpreted as characteristic of established local thermal non-equilibrium.

Domaines: Génie civil; Mécanique [physics]

Rachel Gelet, Benjamin Loret. The importance of local thermal non-equilibrium in the modeling of a fractured hot dry rock reservoir. Deep Goethermal Days, Apr 2014, Paris, France. . ⟨hal-01079184⟩