Hot dry rock heat production prediction method based on heat-fluid-solid-damage coupling

A prediction method, hot dry rock technology, applied in instrumentation, design optimization/simulation, calculation, etc., can solve problems such as failure to consider thermal-fluid-solid multi-physics coupling conceptual model, reservoir damage, and productivity reduction prediction effects, etc.

Active Publication Date: 2022-06-17
CHINA UNIV OF MINING & TECH (BEIJING)
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Problems solved by technology

[0005]However, most of the above models focus on pure heat extraction calculations, without considering the coupling of heat-fluid-solid multiphysics fields, and without using the conceptual model of the act

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  • Hot dry rock heat production prediction method based on heat-fluid-solid-damage coupling
  • Hot dry rock heat production prediction method based on heat-fluid-solid-damage coupling
  • Hot dry rock heat production prediction method based on heat-fluid-solid-damage coupling

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Embodiment Construction

[0045] It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0046] It should be noted that the steps shown in the flowcharts of the accompanying drawings may be executed in a computer system, such as a set of computer-executable instructions, and, although a logical sequence is shown in the flowcharts, in some cases, Steps shown or described may be performed in an order different from that herein.

[0047] like figure 1 As shown in the figure, this embodiment provides a method for predicting the heat production of hot dry rock based on heat-fluid-solid-damage coupling, which mainly includes: establishing a hot dry rock enhanced geothermal system model, and networking the dry hot rock enhanced geothermal system model. Grid ad...

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Abstract

The invention discloses a hot dry rock heat production prediction method based on heat-fluid-solid-damage coupling, and the method comprises the steps: building a hot dry rock enhanced geothermal system heat-fluid-solid coupling model, carrying out the grid adaptive division of the hot dry rock enhanced geothermal system model, carrying out the heat-fluid-solid multi-physics field coupling calculation, and carrying out the heat-fluid-solid multi-physics field coupling calculation. Obtaining heat, flow and solid physical field solutions; performing damage analysis on the hot dry rock reservoir area according to the stress solution to obtain a local damage area of the hot dry rock reservoir; and obtaining the heat energy of the hot dry rock based on the heat-fluid-solid coupling solution. According to the method, the engineering scale hot dry rock reservoir model considering heat-fluid-solid multi-physics field coupling is established, the hot dry rock exploitation heat diffusion process is simulated, reservoir damage analysis and model grid optimization are achieved, and therefore the heat energy exploited by the hot dry rock can be reliably evaluated.

Description

technical field [0001] The invention belongs to the field of enhanced geothermal system (EGS) dry-hot rock artificial thermal storage construction, in particular to a dry-hot rock heat production prediction method based on heat-fluid-solid-damage coupling. Background technique [0002] With the increasingly severe environmental problems and the gradual reduction of energy, the development and utilization of new clean energy has become an inevitable requirement for sustainable development of mankind. Geothermal energy is a kind of renewable energy with large reserves, wide distribution, safe development and utilization, stable, clean and efficient. Hot dry rock-type geothermal energy is widely distributed due to its wide global distribution and almost zero emissions after utilization. application. Enhanced geothermal system is a technology for mining thermal energy proposed on the basis of hot dry rock technology. It uses hydraulic fracturing to transform the original natura...

Claims

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Application Information

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IPC IPC(8): G06F30/23G06F30/28G06F113/08G06F119/08G06F119/14
CPCG06F30/23G06F30/28G06F2113/08G06F2119/14G06F2119/08Y02E10/10
Inventor 王永亮武佳丽
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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