Stratum deep high-salinity brine exploitation and heat utilization system

A high-salt and brine technology, which is used in systems for heat exchange with high-salt brine and systems for producing high-salt brine in deep formations, can solve the problems of waste of clean water, low compressibility, and increased engineering costs, and achieve The effect of reducing environmental pollution, reducing waste of resources and huge economic benefits

Active Publication Date: 2014-02-26
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the use of water as a heat transfer medium has some disadvantages: 1. The water injected into the ground is seriously lost, resulting in waste of clean water, and the project cost will be increased due to water loss
2. The water injected

Method used

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  • Stratum deep high-salinity brine exploitation and heat utilization system
  • Stratum deep high-salinity brine exploitation and heat utilization system

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Embodiment Construction

[0015] The present invention will be described in detail below with reference to the drawings and embodiments, but the protection scope of the present invention is not limited to the following embodiments.

[0016] Drill wells should be carried out before mining, and the corresponding drainage wells and injection wells should be drilled. In this embodiment, the distribution of drainage wells and injection wells is as follows: figure 1 As shown, the drainage wells are distributed in a cross shape, the injection wells are located in the center of the cross shape, and the drainage wells are distributed outwardly with the injection well as the center, and the gap between the injection well and the adjacent extraction well The distance is 1 km, and the distance between adjacent extraction wells is 1 km.

[0017] The mining and heat utilization system of deep high salt brine provided by this embodiment is as figure 2 Shown:

[0018] Including injection wells, extraction wells, CO 2 Sourc...

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PUM

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Abstract

The invention provides a stratum deep high-salinity brine exploitation and heat utilization system which comprises an injection well, an extraction well, a CO2 source gathering device, a heat utilization device, a separation device and a recharging device. A closed loop is formed between the CO2 source gathering device, the heat utilization device, the separation device as well as the recharging device and the injection well as well as the extraction well, the bottom of each of the injection well and the extraction well is positioned in a high-salinity brine layer, the CO2 source gathering device is communicated with a wellhead of the injection well, high-salinity brine is extracted out from a wellhead of the extraction well, the wellhead of the extraction well is communicated with the heat utilization device which is communicated with the separation device, and the recharging device is connected with both the separation device and the injection well. By the system, the problems of serious pressure accumulation and salt rock sedimentation can be effectively relieved, and geological storage of CO2 can be realized to slow down weather change; constant pressure of geothermal reservoirs can be maintained, exploitation efficiency of brine and geothermal resources can be greatly improved, geothermal energy can be used for power generation or can be directly utilized, and economic benefit is remarkable.

Description

Technical field [0001] The invention relates to a system for preparing high-salt brine in deep stratum, in particular to a system for heat exchange with high-salt brine, and at the same time CO 2 It is sealed underground and belongs to the field of environmental management and resource mining technology. Background technique [0002] Geothermal energy is a kind of renewable clean energy from the deep part of the earth, which is brought to the surface for use in the form of hot water or steam through the flow of groundwater or other working fluids. In today's rapid economic development and increasingly scarce energy, the rational development and utilization of geothermal resources has become more and more popular. There are mainly geothermal power generation, while the direct use of geothermal water for building heating, the development of greenhouse agriculture and hot spring tourism have also developed rapidly. [0003] As a kind of geothermal energy, hot brine is geothermal wate...

Claims

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Application Information

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IPC IPC(8): E21B43/16E21B43/40F03G4/00
CPCY02E10/36Y02E10/10Y02E10/30Y02P90/70
Inventor 杨国栋李义连杨勇王文海
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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