Method for analyzing microscopic seepage law of thermal reservoir recharge water

A technology of microscopic seepage and analysis methods, which is applied in the analysis of materials, flow characteristics, instruments, etc., and can solve the problems of reduced thermal storage pressure, difficult access to natural cores, and lack of visualization characteristics of cores.

Pending Publication Date: 2021-04-09
CHINA PETROCHEMICAL CORP +2
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Problems solved by technology

[0005] (3) Maintain the fluid pressure of the heat storage and maintain the mining conditions of the geothermal field. Generally speaking, the exploitation of geothermal energy will lead to a decrease in the pressure of the heat storage. If the amount of extraction is too large, the pressure of the heat storage will continue to decrease when the balance between recharge and mining is lost. , reduce the production capacity of ge

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  • Method for analyzing microscopic seepage law of thermal reservoir recharge water
  • Method for analyzing microscopic seepage law of thermal reservoir recharge water
  • Method for analyzing microscopic seepage law of thermal reservoir recharge water

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[0042] The present invention will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0043] figure 1 Shown is a step diagram of a method for analyzing the microscopic seepage law of thermal reservoir recharge water according to the present invention, as figure 1 Shown, according to a kind of analysis method of thermal reservoir recharge water microscopic seepage rule of the present invention, comprising:

[0044] Step 1: Provide a core model, the core model is transparent and has interconnected pore roars and fractures inside, and the core model is provided with an i...

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Abstract

The invention discloses a method for analyzing a microscopic seepage law of recharge water of a thermal reservoir, which comprises the following steps of: providing a core model which is transparent, is internally provided with a pore throat and a crack, and is provided with an injection end and an outflow end; vacuumizing the rock core model, saturating formation water and then heating to a preset temperature; continuously injecting the first recharge water containing the dyeing tracer agent into the rock core model through the injection end to displace formation water, and recording a first flowing process video; analyzing the swept area, the leading edge breakthrough time and the breakthrough speed of the first recharge water in the rock core model through image processing; continuously injecting second recharge water containing a multi-temperature-section temperature-sensitive tracer into the rock core model through the injection end to displace formation water, and recording a second flowing process video; and based on the color change of the second recharge water in different areas, analyzing the temperature field change of the second recharge water through image processing. According to the present invention, direct analysis on the microscopic seepage law and the heat exchange change characteristics of the recharge water are achieved.

Description

technical field [0001] The invention relates to the technical field of development and utilization of geothermal resources, and more specifically relates to a method for analyzing microscopic seepage laws of recharge water in thermal reservoirs. Background technique [0002] Geothermal recharge is a measure to avoid thermal and chemical pollution caused by direct discharge of geothermal wastewater, and it plays an important role in maintaining the pressure of heat storage and ensuring the technical conditions for the exploitation of geothermal fields. Geothermal recharge is to pour geothermal wastewater, normal temperature groundwater, surface water and even sewage into the thermal storage. Its purpose is as follows: [0003] (1) The temperature of geothermal wastewater is generally higher than the ambient temperature, which usually contains high salt content, and some chemical components are toxic and harmful. The direct discharge of geothermal wastewater may cause thermal ...

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Application Information

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IPC IPC(8): G01N11/10
CPCG01N11/10
Inventor 杜利赵磊国殿斌魏广仁乔勇
Owner CHINA PETROCHEMICAL CORP
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