Deeply-buried geothermal water same-well same-layer pumping and recharging heat source recycling system and work method

Abstract

The invention discloses a deeply-buried geothermal water same-well same-layer pumping and recharging heat source recycling system. The system comprises a main well, a control chamber, a pumping system, a recharging system and a water blocking system; the pumping system is used for exploiting geothermal water in a deeply-buried geothermal reservoir water containing layer in a certain area, the recharging system is used for recharging underground water obtained after heat extracting to the same-layer geothermal reservoir water containing layer outside the pumping influence radius, the water blocking system is used for blocking converging of the pumping water and underground water obtained after heat extraction, and the control chamber is arranged on the ground outside the main well. Pumpingand recharging of the same-layer same-well deep layer geothermal water can be carried out, mutual interference during same-layer geothermal water pumping and recharging can be avoided, the shaft sinking cost is reduced, the occupied area is small, the geologic structure disturbance is small, the recharging rate is high, practicability is good, and operability is high.

Description

technical field [0001] The invention relates to the technical field of geothermal energy development, in particular to a deep buried geothermal water pumping and irrigation heat source recycling system and working method in the same well and at the same layer. Background technique [0002] Fossil energy, as a primary energy source, seriously pollutes the ecological environment, and clean energy is increasingly valued. Geothermal energy is a clean and recyclable energy source. As a geothermal carrier, groundwater is widely used in industry, agriculture, breeding, tourism, living and other industries. Loose pore-type geothermal water is stored under the surface. Since the top is not protected by hard bedrock, if it is over-exploited, it will cause negative effects such as continuous decline in the water level of the aquifer, deterioration of water quality, and lower water temperature. In severe cases, it will cause surface subsidence, Environmental hydrogeological issues such...

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Problems solved by technology

Geothermal water extraction projects are generally located in residential areas, and the pumping wells and recharge wells are located in different locations. The project occupies a large area of ​​land, resulting in a waste of valuable land resources; More than RMB / m, the project cost is expensive

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