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Antifreeze method for deep water well in tundra and antifreeze deep water well

A technology for permafrost zones and deep water wells, which is used in earth-moving drilling, wellbore/well components, isolation devices, etc., can solve the problems of large water well antifreeze energy consumption, insufficient water well antifreeze depth, and unreliable antifreeze effect, etc. Good antifreeze effect, low antifreeze energy consumption, low energy consumption effect

Active Publication Date: 2020-04-10
ARMY ENG UNIV OF PLA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, the problems existing in the prior art are: the antifreeze energy consumption of water wells in permafrost areas is large, and the antifreeze effect of water wells is not reliable because the antifreeze depth of water wells is not deep enough.

Method used

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  • Antifreeze method for deep water well in tundra and antifreeze deep water well
  • Antifreeze method for deep water well in tundra and antifreeze deep water well
  • Antifreeze method for deep water well in tundra and antifreeze deep water well

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Embodiment Construction

[0027] The deep-water well antifreeze method in permafrost zone of the present invention, its main steps comprise:

[0028] When the main water pump of the deep water well is not working, the temperature of each vertical point on the inner side of the outer well wall is detected in real time;

[0029] When the temperature at a certain vertical point on the inside of the outer well wall reaches the freezing point, the water in the inner well pipe is kept flowing.

[0030] In order to realize the real-time detection of the temperature of each vertical point on the inner side of the outer well wall when the main water pump of the deep water well is not working, the following optimal method can be adopted:

[0031] A temperature detection and auxiliary hotline system 71 is vertically arranged along the inner side of the outer shaft wall to detect the temperature of each vertical point on the inner side of the outer shaft wall in real time.

[0032] In order to realize the deep-wa...

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Abstract

The invention discloses a freeze-proof method for a deep water well in a frozen earth zone and a freeze-proof deep water well with a good freeze-proof effect and low freeze-proof energy consumption. The freeze-proof deep water well in the frozen earth zone comprises an outer sidewall (11), an inner well casing (12) and an outer well casing (13) which is installed between the inner well casing (12)and the outer sidewall (11) in a sleeving mode. A gap (14) is arranged between the outer well casing (13) and the inner well casing (12). The outer well casing (13) is tightly connected with the lower end of the inner well casing (12) in a closed mode, at least one circulating water inlet (61, 62) is formed, and the circulating water inlet is connected with outlets of circulating water pumps (51,52). The outer well casing (13) is tightly connected with the upper end of the inner well casing (12) in a closed mode. Circulating water outlets (63, 64) which communicates with the gap (14) betweenthe inner and outer well casings (12, 13) and the inner portion of the inner well casing (12) are formed in the side wall of the upper portion of the inner well casing (12).

Description

technical field [0001] The invention belongs to the technical field of water intake engineering, in particular to an antifreeze method for a deep water well in a permafrost zone with good antifreeze effect and low antifreeze energy consumption and an antifreeze deep water well. Background technique [0002] In winter or in severe cold regions, when the wells are not pumped, the well wall pipes, water pumps and water pump outlet pipes in the permafrost or permafrost areas are easily frozen, causing the pumps to fail to discharge water and affecting normal water supply. If the surface heat in summer cannot be transferred to the permafrost layer, once the well freezes, it will cause the well to be scrapped, resulting in economic losses and waste of resources. [0003] The existing antifreeze patented technology for water wells is mainly electric heat tracing technology, such as the Chinese utility model patent "Antifreeze device for oilfield water wells based on microcomputer c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B36/00
CPCE21B36/006
Inventor 王大庆许颢砾邓正栋丁志斌胡龙胜倪博睿
Owner ARMY ENG UNIV OF PLA
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