Integrated geothermal well single-hole extraction and charging heat exchange method and equipment

Abstract

The invention belongs to the technical field of application of geothermal wells, and discloses an integrated geothermal well single-hole extraction and charging heat exchange method and integrated geothermal well single-hole extraction and charging heat exchange equipment. The heat exchange method is characterized in that a deep geothermal replacement pipe, a special pipe for heat collection and heat preservation, a heat recovery pump, a geothermal energy comprehensive utilization device, a recharge pressurization pump, a geothermal well pipe, a water return supplement pump, a water pressure gauge, a water gas observation meter and other equipment instruments are adopted, deep geothermal wells are formed one by one, a heat collection and recharge full-sealed space water circulation is adopted used for replacing geothermal energy to the upper part for heating in winter, and a heat preservation measure is taken in the process of extracting the ground hot water; and the water circulation heat exchange is carried out by utilizing the characteristics that the deep heat is high, the space leakproofness is good, and the water resource consumption is small. According to the heat exchange method and equipment, the good effects that environment is protected, water resources are saved, the stratum application is wide, the heat energy conversion efficiency is high, and the well-forming workload is reduced are achieved, the method and the equipment can be used for energy development of a terrestrial heat site and hot dry rock, and the characteristics of energy conservation, environmental protection, low cost, good social benefit and good economic benefit are achieved.

Description

technical field [0001] The invention belongs to the technical field of application of geothermal wells, and in particular relates to an integrated geothermal well single-hole pumping and irrigation heat exchange method and equipment. Background technique [0002] Currently, the closest prior art: [0003] Existing geothermal wells adopt the method of one extraction, one irrigation, two wells or one extraction, multi-irrigation and multiple wells. There are A. the amount of water in the geothermal aquifer is limited; , resulting in waste of water resources, D, the high cost of well completion, etc. With the increase in demand for geothermal energy in recent years, the enhancement of exploration capabilities of hot dry rock in geothermal energy, and the lack of research and development of hot dry rock heating technology and equipment limit the comprehensive application of geothermal energy. [0004] In summary, the problems in the prior art are: [0005] (1) Existing geothe...

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Problems solved by technology

[0005] (1) Existing geothermal wells adopt the method of one extraction, one irrigation, two wells or one extraction, multiple irrigation, and multiple wells. There is a waste of water resources due to the amount of water in the geothermal aquifer and the recharge volume of the reinjection well. Happening

[0006] (2) Insufficient research and development of hot dry rock heating technology and equipment limits the comprehensive application of geothermal energy

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