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A method for vertically exploiting geothermal energy

A geothermal energy, vertical technology, applied in the development of fluids, earthwork drilling, wellbore/well components, etc., can solve the problems of uneconomical, high cost, lack of promotion, etc., to reduce the floor space, easy to implement, reduce drilling effect of quantity

Active Publication Date: 2015-09-09
临沂高新自来水有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is costly and uneconomical compared with fossil fuels, so it has not been promoted

Method used

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  • A method for vertically exploiting geothermal energy
  • A method for vertically exploiting geothermal energy

Examples

Experimental program
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Effect test

Embodiment 1

[0027] The wellbore of this embodiment is a vertical well, and its injection-production circuit (such as figure 1 ), the platform (1) is located on the ground, and the vertical depth of the destination layer is 2500 meters to 4500 meters. A wellbore (7) is drilled vertically underground with a vertical depth of 3500 meters, the injection string (2) and the collection string (4) are located in the wellbore (7), the injection string (2) and the collection string (4) Made of heat insulating material. Wherein, the vertical depth of the injection pipe string (2) is 3000 meters, the injection port is located at the vertical depth of 3000 meters, the vertical depth of the collection pipe string is 3500 meters, the collection port is located at the vertical depth of 3500 meters, and the injection port (5) is connected to the injection pipe string ( 2), the collection port (6) is connected to the collection column (4). The injection port (5) and the collection port (6) are located at...

Embodiment 2

[0030] The wellbore of this embodiment is a branched horizontal well, and its injection-production circuit (such as figure 2), the platform (1) is located on the ground, the vertical depth of the destination layer is 2500 meters to 4500 meters, and a branch horizontal wellbore (7) is drilled underground. The wellbore (7) has two branches, the upper and lower The vertical depth of the branch (8) is 3000 meters, and the vertical depth of the lower branch (9) is 3500 meters. Both the injection string (2) and the collection string (4) are located in the wellbore (7). The injection string (2) and The collection pipe string (4) is made of heat insulating material. One end of the injection pipe string (2) is connected to the platform (1), and one end is located in the upper branch (8) of the wellbore (7), and several injection ports (5) are located in the upper branch (8) and connected with the injection pipe string (2 ) connection; one end of the collection pipe string (4) is conn...

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Abstract

The invention relates to the technical field of the development and the utilization of geothermal resources, in particular to a method for longitudinally mining geothermal energy. The method for longitudinally mining the geothermal energy comprises the following steps: a borehole can be drilled down, and an injection tubular column and an collection tubular column are applied for connecting the ground and an objective stratum so as to form an injection-collection loop through which liquid can pass; and the injection-collection loop can be filled with the liquid such as water, the liquid longitudinally passes through the objective stratum under the action of pressure, absorbs the geothermal energy and takes the geothermal energy to the ground, the liquid which is used as a medium finishes one circulation in the injection-collection loop, and the geothermal energy in the objective stratum is taken to the ground and is used for human beings. The method disclosed by the invention can be used for mining the geothermal energy; compared with the prior art, the method has the advantages of being capable of reducing the engineering cost and the land occupied area; and at the same time, the method is easy to implement various engineering measurements.

Description

technical field [0001] The present invention relates to the technical field of development and utilization of geothermal resources, and in particular to a method for vertically exploiting geothermal energy. The method for longitudinally exploiting geothermal energy drills a wellbore underground, and uses liquid as a medium to transport the target layer through the wellbore. The geothermal energy in it is carried to the ground. The invention can also be applied to the technical field of petroleum exploration and development, such as heavy oil exploitation. Background technique [0002] I hope that the price of electricity and oil will not rise again, and I hope that I can breathe fresh air and enjoy a friendly natural environment every moment; you who are reading the "Manual", don't you think the same? Not only that, Premier Wen Jiabao is also at home and abroad, flying around in Asia and Europe, busy with energy and environmental issues. In short, energy shortage and envir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/00
Inventor 邱世军
Owner 临沂高新自来水有限公司
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