Device for simulating and evaluating damages of recharge to stratum

Abstract

The invention discloses a device for simulating and evaluating damages of recharge to a stratum. The device comprises a gas cylinder, a sucking pump, a pressure stabilizer, a galvanostat, a buffer chamber, a liquid storage tank, a first liquid sucking pump, a stirring barrel, a first valve, a second liquid sucking pump, a sterilization device, a first flow meter, a first pressure meter, a second pressure meter, a second flow meter, a liquid discharging pipe, a waste liquid barrel, a salt adding device and a sample holder, and can simulate and evaluate damages of recharge to the stratum.

Description

technical field [0001] The invention belongs to the technical field of geothermal exploration and development, and relates to a device for simulating and evaluating the harmfulness of recharge to formations. Background technique [0002] Geothermal resource is a kind of renewable energy with large resource reserves and good stability. It is of great significance for energy saving, emission reduction, and air pollution control. It has a significant effect on clean energy heating and improving the quality of heating in North China. [0003] However, with the continuous development of geothermal resources, the groundwater level in some areas has dropped significantly, seriously affecting the effective supply and balance of groundwater resources, resulting in unsustainable geothermal development and restricting the further exploitation of geothermal resources. In order to promote the recyclable use of geothermal resources and meet environmental protection requirements, geotherma...

AI Technical Summary

Problems solved by technology

However, the temperature of the geothermal recharge layer is high and the pressure is high. The conventional simulation evaluation method in the laboratory under normal temperature and pressure is quite different from the actual situation underground. At present, the equipment cannot carry out different recharge fluid compositions, variable recharge rates, etc. The impact on recharged geothermal formations, the impact of multiple continuous reservoir damage assessments that cannot be carried out on the equipment

[0004] Therefore, it is necessary to form a device for simulating and evaluating the damage of recharge to the formation to solve the problem of damage to the formation under the real temperature and pressure conditions of the underground under different tailwater composition rates during the geothermal recharge process.

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