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Hot source tracing method

A heat source and hot well technology, applied in the field of geothermal exploration, can solve the problems of reduced reliability, high manpower, material resources and time, high price, etc., and achieve the effects of high accuracy, low cost, and flexible and convenient operation

Inactive Publication Date: 2020-01-03
郑州地美特新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The CSAMT heat source exploration method needs to use multiple geophysical prospecting methods to work together to finally determine the location of the heat source. If only one electrical geophysical prospecting method is used, there will be a high probability of obtaining multi-solution exploration results, which will consume a lot of manpower, material resources and resources. time;
[0004] 2. The main equipment used in the CSAMT heat source exploration method is the electrical instrument, which is expensive and is subject to restrictions and influences from external conditions. Obvious difference in resistivity to ensure that the electrical anomaly produced by the exploration object can be distinguished from the interference background, otherwise misjudgment will occur; and when the external electromagnetic interference in the exploration area is serious, the exploration effect will be affected, and the reliability Obvious reduction

Method used

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  • Hot source tracing method

Examples

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Embodiment 1

[0031] A method for heat source tracing, comprising the following steps:

[0032] Firstly, according to the basic knowledge of geophysics, local geothermal development conditions and environmental requirements, the position of the reference geothermal well 1 is selected and determined, and then the reference geothermal well is drilled to the target water layer according to various indicators of geothermal exploitation, and the water output from the wellhead of the reference geothermal well is detected. temperature;

[0033] Secondly, take the wellhead of the reference geothermal well as the center of the circle, look for the 1# hot spring 2 exposed on the surrounding side of the reference geothermal well, and at the same time, install the main valve (not shown in the figure) at the wellhead of the 1# hot spring or 1# hot spring 2 out) and sampling valve 3; among them, the 1# hot spring is best to choose a position whose terrain is obviously lower than the head of the reference...

Embodiment 2

[0036] Different from Example 1, the well head of 1# hot spring 2 is continuously sampled, and color markers are not detected. At this time, as figure 1 As shown, the black arrow indicates the trend of the surface terrain in the exploration area. Find other suitable hot springs 2 on the circle with the wellhead of the reference geothermal well 1 as the center and the distance between 1# hot spring 2 and the reference geothermal well 1 as the radius. This hot spring 2 is preferably positioned at the three o'clock direction of 1# hot spring 2, the six o'clock direction or the nine o'clock direction. 2# hot spring 2 in the direction, and there is no ready-made hot spring in other positions, then at this time, take 2# hot spring 2 as the starting point and rotate clockwise 90 degrees sequentially, and open 3# exploration well 2 and 4# exploration well 2, At the same time, the wellheads of 2# exploration well 2, 3# exploration well 2 and 4# exploration well 2 are equipped with samp...

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Abstract

The invention discloses a hot source tracing method. The hot source tracing method comprises the steps of determining a position of a reference geothermal well, drilling to a target water layer, and detecting a water outlet temperature of a well mouth of the reference geothermal well; seeking a hot spring, exposed out of ground, at a peripheral side of the reference geothermal well; or building anexploratory well drilled to the target water layer; throwing a color marker into the reference geothermal well, and continuously sampling at the hot spring exposed out of the ground or a well mouth of the exploratory well; repeating the step of seeking the hot spring or building the exploratory and sampling if there is no color marker in a detection standard sample until the color marker is occurred; and drilling towards an opposite direction of the hot spring or the exploratory well by taking the reference geothermal well as a center if there is color marker in the detection standard sample,and detecting a temperature of the well mouth until the well mouth with the water outlet temperature reaching requirement is found out. The hot source tracing method provided by the invention is lowin cost and is flexible and convenient to operate, is free from influence of environmental factors such as surrounding electromagnetic field and noise during the detection process and is high in accuracy.

Description

technical field [0001] The invention relates to the technical field of geothermal exploration, in particular to a heat source tracing method. Background technique [0002] At present, domestic deep geothermal exploration mainly relies on geophysical exploration methods. The most advanced groundwater heat source exploration method is CSAMT controlled source audio frequency magnetotelluric detection method. A method for geological exploration of electrical differences. But this method has the following disadvantages: [0003] 1. The CSAMT heat source exploration method needs to use multiple geophysical prospecting methods to work together to finally determine the location of the heat source. If only one electrical geophysical prospecting method is used, there will be a high probability of obtaining multi-solution exploration results, which will consume a lot of manpower, material resources and time; [0004] 2. The main equipment used in the CSAMT heat source exploration me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V8/10G01K11/16G01K13/02
CPCG01V8/10G01K11/16
Inventor 蒋浩常树鑫蔡爱泉
Owner 郑州地美特新能源科技有限公司