Geothermal well layer-by-layer filter material feeding process

A process method and geothermal well technology, applied in the field of drilling, can solve the problems of reducing quality, achieve the effects of reducing wear, ensuring the stability of the formation, and avoiding ground subsidence

Active Publication Date: 2010-12-29
河北伟业地热新能源科技有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

If the water from the two aquifers is mixed, it will inevitably reduce the quality of the water taken

Method used

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  • Geothermal well layer-by-layer filter material feeding process
  • Geothermal well layer-by-layer filter material feeding process

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Embodiment Construction

[0020] Geothermal well layered filtering material process method, the process steps are: ①well diameter measurement, ②determining the height of each aquifer layer and non-aquifer layer, ③determining the specific water intake target layer in the aquifer, ④calculating the specific water intake target layer The amount of filter material, ⑤ calculating the amount of clay used in the non-water intake layer and non-aquifer layer in the aquifer, ⑥ cleaning the hole, ⑦ changing the slurry, ⑧ dropping the pipe, ⑨ washing the filter pipe, ⑩ putting in the filter material and clay.

[0021] The caliper measurement is to determine the size of the caliper with physical measurement method, and to provide data for the next step to calculate the amount of water-absorbing aquifer filter material, and to determine the height of each aquifer and the height of the non-aquifer is to use the geophysical logging method. Methods, including measuring natural potential, resistivity, natural gamma, sound...

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Abstract

The invention discloses a geothermal well layer-by-layer filter material feeding process which comprises the following steps of: (1) measuring a well diameter; (2) confirming heights of all water layers and heights of non-water layers; (3) confirming concrete water extracting destination layers in the water layers; (4) calculating the filter material dosage of all the concrete water extracting destination layers; (5) calculating the clay consumption of non-water extracting destination layers and non-water layers in the water layers; (6) cleaning holes; (7) replacing slurry; (8) placing a pipe; (9) washing the draining pipe; and (10) feeding a filter material and clay. The invention provides the geothermal well layer-by-layer filter material feeding process which is suitable for the geologic structure of the same geothermal well having a plurality of available water-quality and unavailable water-quality water layers and aims to use the water layers with higher water quality and seal the water layers with harmful water quality.

Description

technical field [0001] The invention relates to a drilling method, in particular to a geothermal well layered filtering material processing method. It is especially suitable for the geological structure where the same geothermal well has multiple aquifers with usable water quality and unwaterable water quality, the purpose of using the aquifer with better water quality and sealing the aquifer with harmful water quality. Background technique [0002] In the process of geothermal well construction, there are multiple aquifers at different depths, and the water quality of each aquifer is often different. Some aquifers have good water quality, and some aquifers have poor water quality. If the water from the two aquifers is mixed, it will inevitably reduce the quality of the water taken. Therefore, in the process of well construction, it is one of the research topics to screen different water qualities, avoid water treatment after the water reaches the ground, and reduce equipme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/00E21B43/02E21B47/00E21B47/02E21B47/06E21B47/08
Inventor 冯洪喜阴文行
Owner 河北伟业地热新能源科技有限公司
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