The invention discloses a tThermal storage engineering evaluation method for geothermal resources

Abstract

A thermal storage engineering evaluation method for geothermal resources comprises the following steps: 1) analyzing an existing geothermal well water pumping test report of a region according to water pumping test data; 2) establishing a research area terrestrial heat numerical model by utilizing the existing parameters; 3) simulating the maximum recharge quantity of the recharge well under different wellhead recharge pressure conditions by utilizing a numerical model, and determining the maximum recharge quantity of the recharge well in the region; 4) determining the optimal well distance ofthe geothermal well by utilizing the numerical model; 5) adopting a numerical simulation method to select a minimum mining and irrigation well distance; 6) flexibly selecting a well pattern form by combining the actual condition of the ground; 7) calculating the heat collection capacity per unit square kilometer according to the principle of combining the ground and the underground; T; the methodhas the advantages that the operability is high, t, the optimal mining and irrigation well distance and the optimal mining and irrigation amount are designed and optimized, parameters such as the reasonable water taking amount, t, the well distance, t, the recharge temperature and the heat capacity rate of the geothermal well are clear, and multiple methods such as a theoretical formula, an empirical formula and numerical simulation are comprehensively used.

Description

technical field [0001] The invention relates to the technical field of geothermal resource development, in particular to a thermal storage engineering evaluation method for geothermal resources. Background technique [0002] Geothermal resources refer to the renewable thermal energy stored in the earth's interior. Under the current situation of my country's energy shortage and serious air pollution, geothermal resources have attracted widespread attention due to their advantages of cleanness, regeneration, large energy, and relatively simple development and utilization equipment. More and more companies have joined geothermal resources for heating In the army of development. Although there are many geothermal resources evaluation projects in my country in recent years, as an underground resource development, developers often pay more attention to the amount of geothermal resources, and have carried out a lot of research work on the evaluation of geothermal resources, but the...

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Problems solved by technology

The lack of perfect method system guidance leads to the randomness of the deployment of production and irrigation wells during the implementation of geothermal projects, the unreasonable setting of development parameters of production and irrigation wells, the rapid decline in the pressure of geothermal reservoir heat storage, the decrease in the outlet water temperature of geothermal wells, and ground subsidence, etc. , resulting in the waste of geothermal resources, making the economic benefits of geothermal resource development worse

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