Method and device for evaluating water-drive heat collection capacity of hydrothermal geothermal field

Abstract

The invention provides a method for evaluating the water drive heat collection capacity of a hydrothermal geothermal field, and the method comprises the steps: calculating the storage capacity of geothermal water in the geothermal field, the storage capacity of geothermal energy in a rock skeleton and the storage capacity of geothermal energy in the geothermal water through a heat storage method,and obtaining the total reserve of the whole heat storage geothermal energy; then evaluating the water gushing capacity and the recharging capacity of the geothermal well through a water pumping testand a recharging test, and designing a mining and recharging mode on the basis of the test data; and finally, establishing a geothermal field numerical model on the basis, and calculating the total heat recovery quantity and recovery rate of the geothermal well under the condition of extraction and irrigation, so as to evaluate the heat recovery capability of the hydrothermal geothermal field in the water flooding heat recovery mode, and provide reference for efficient development of geothermal resources.

Description

technical field [0001] The invention relates to the technical field of geothermal exploitation, in particular to an evaluation method and an evaluation device for the water flooding heat recovery capacity of a hydrothermal geothermal field. Background technique [0002] Geothermal energy is renewable thermal energy from the depths of the earth. It comes from the decay of deep radioactive materials in the earth and the residual heat energy in the early formation of the earth. The deep circulation of groundwater brings thermal energy from deep underground to the surface. The reserves of geothermal energy are huge, and most of them are concentrated in active margins such as plates. It is not only pollution-free clean energy, but also renewable. [0003] Areas on Earth that store geothermal energy are called geothermal fields. According to the storage method of geothermal energy, geothermal fields can be divided into dry heat type and hydrothermal type. The geothermal energy...

AI Technical Summary

Problems solved by technology

For hydrothermal geothermal fields, in the past, thermal energy was only extracted by exploiting geothermal water, but most of the geothermal energy was still stored in the rock skeleton and could not be exploited. The recovery rate of geothermal energy was very low, and the input and output of geothermal development than very high

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