System for drilling the ground to obtain circulation of fluid in a plant for the exploitation of geothermal energy
AssigneeSoilmec S.p.A.
InventorDavide Trevisani
Life of this patent
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Abstract
A system for high-depth drilling of the ground aimed at reaching hot rocks for extraction of geothermal energy by means of introduction of a heat-conveying fluid and extraction thereof after adequate heating uses just one borehole containing two coaxial tubes: an internal tube (3, 11, 13), through which the cold fluid is introduced, and an external or coating tube (4, 6), through which said fluid returns to the surface after it has been heated by the hot rocks either directly or through said coating tube.
Claims12
A system for high-depth drilling of the ground aimed at reaching hot rocks for extraction of geothermal energy by introduction of a heat-conveying fluid and extraction thereof after adequate heating, said system comprising one borehole containing two coaxial tubes:
- an internal tube, in which introduction of the fluid is carried out, and an external or coating tube, along which said fluid returns to the surface after it has been heated by the hot rocks either directly or through said coating tube.
Dependencies are inferred from the claim text.