Method and apparatus for locating geothermal sources of energy
阅读：852发布：2021-11-08
专利汇可以提供Method and apparatus for locating geothermal sources of energy专利检索，专利查询，专利分析的服务。并且A method and apparatus for locating subterranean sources of geothermal energy characterized by discharging test energy into the earth at a depth sufficient to be substantially insulated from surface temperature variations, removing heat from the earth at the discharge position to establish a sphere of cooling at the discharging position subject to heat from the geothermal source, and detecting changes in the conductivity of the earth between the discharging position and a plurality of detecting positions at or near the surface substantially equally spaced about an axis of reference extended from the discharging position vertically to the surface to determine the azimuthal orientation of the source of geothermal heat from the axis by changes in the conductivity of the earth between said discharging position and the detecting positions indicent to geothermal warming of the sphere of cooling.，下面是Method and apparatus for locating geothermal sources of energy专利的具体信息内容。
1. A method of locating a source of geothermal energy comprising establishing a plurality of paths of electrical conduction through the earth, artificially changing the temperature of the earth in at least a part of said paths, and detecting changes in electrical conductivity along said paths incident to changes in temperature therealong to locate said source.
2. The method of claim 1 in which the detection of changes in electrical conductivity is carried out at a position remote from the part of said paths in which the temperature is changed.
3. A method of locating a source of geothermal energy comprising conducting test energy along a plurality of comparative paths through the earth, the rate of conductivity of said test energy being responsive to temperature change, removing heat from the earth at a position in predetermined relation to said paths, and measuring the energy conducted along said paths as said position is permitted to return to ambient temperature to locate said source.
4. The method of claim 3 in which said paths are symmetrical to the position from which heat is removed.
5. A method of locating a source of geothermal energy comprising establishing a plurality of comparative paths of electrical conductivity through the earth, removing heat from the earth at a position in predetermined relation to said paths, and measuring the electrical conductivity along said paths as said position is permitted to return to ambient temperature to locate said source.
6. The method of claim 5 in which said paths are symmetrical to the position from which heat is removed.
7. A method of locating a subterranean source of geothermal energy comprising discharging electrical energy into the earth at a position having sufficient depth that the surface effects of the atmosphere and solar radiation are negligible; detecting such energy at a plurality of positions at the surface in substantially equally spaced relation to the position of the discharge of electrical energy into the earth to determine the relative conductivity of the earth between said discharging position and the detecting positions; removing heat from the earth at said discharging position; and detecting changes in the conductivity of the earth between said discharge position and the detecting positions incident to temperature variation to locate said source.
8. The method of claim 7 in which the detection of energy at the plurality of positions is performed by electrodes individually operatively mounted at each of the positions to receive and transmit such energy for measurement.
9. The method of claim 8 in which the measurement of electrical energy is performed by ammeters individually in operative communication with each of the electrodes.
10. A method of locating a subterranean source of geothermal energy comprising drilling a hole into the earth to a depth sufficient that the surface effects of the atmosphere and solar radiation are negligible at the bottom of the hole, discharging electrical energy into the earth at the bottom of said hole, detecting such energy at the surface of the earth at a plurality of positions in substantially equally spaced relation about a circle concentric to said hole whereby the conductivity of the earth between the bottom of the hole and each of said positions is measured, depositing a heat absorbing agent at the bottom of the hole to cool the earth substantially symmetrically thereabout, and measuring the conductivity of the earth between the bottom of the hole and each of said positions to detect any distortion Of the symmetrical cooling about the bottom of the hole incident to the receipt of geothermal energy from eccentrically thereof to locate said source.
11. The method of claim 10 in which, prior to the discharge of electrical energy into the earth, a core sample is taken from the bottom of the borehole for analysis as to thermal and electrical conductivity so as to establish an index for subsequent analysis of the changes in conductivity due to cooling.
12. The method of claim 10 in which a plurality of boreholes are drilled in spaced relation to a suspected location of a source of geothermal energy and the method employed at each such hole so as to permit precise location of the source relative to the bottoms of the boreholes.
13. The method of claim 10 in which the borehole is insulated from conducting electrical energy during the discharge of electrical energy into the earth in order to insure lateral discharge of the electrical energy.
14. An apparatus for locating a source of geothermal energy in the earth into which a borehole has been drilled comprising means for releasing electrical energy in the borehole, means at the surface for detecting electrical current at positions spaced about the borehole and variations in said current, and means for changing the temperature of the earth within the borehole and beneath the surface whereby the conductivity through the earth between the position of release of electrical energy in the borehole and the positions of detection of electrical energy at the surface can be compared and their rates of change by geothermal warming observed.
15. The apparatus of claim 14 in which the means for releasing electrical energy is an electrode to which an electrical potential is applied.
16. The apparatus of claim 15 in which the means for changing the temperature of the earth about the borehole comprises means for releasing cryogenic material into the borehole at the position of release of electrical energy.
17. The apparatus of claim 16 in which the detecting means comprises means individual to each position for visually displaying the amount of current received at the position and the individual means are mounted in a battery for simultaneous observation and analysis.
18. A method of locating a source of geothermal energy in the earth comprising establishing a plurality of paths of test energy conduction through the earth, said test energy being characterized by variations in the rate of conductivity thereof in response to temperature changes along the paths, artificially changing the temperature of the earth at a position in predetermined relation to the paths, and detecting changes in the rate of conductivity of the test energy along said paths incident to changes in temperature therealong to locate said source.
19. An apparatus for locating a source of geothermal energy in the earth into which a borehole has been drilled comprising means for releasing test energy in the borehole transmissible through the earth, means at the surface for detecting such test energy at positions spaced about the borehole, and means for changing the temperature of the earth within the borehole and beneath the surface whereby the conductivity of the test energy through the earth between the position of release of the test energy in the borehole and the positions of detection at the surface can be compared and their rates of change incident to geothermal warming observed.
20. The apparatus of claim 19 in which the energy releasing means releases electrical energy and the detection means detects such electrical energy.
21. The apparatus of claim 19 in which the energy releasing means releases energy in the form of compression waves transmitted through the earth and the detection means detects such energy.
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