Separated underground fixed-point perfusion apparatus and method for repairing water supply pipe well by using same

Abstract

The invention relates to the technical field of underground well pipe wall repair, in particular to a separated underground fixed-point perfusion device and a method for repairing a water supply pipewell through the separated underground fixed-point perfusion device. The apparatus comprises an underground pouring device, a wellhead device and a gas filling device. Expansion bodies are arranged attwo ends of the underground pouring device. The gas filling device fills the expansion body with gas, so that the underground pouring device pours cement slurry through the wellhead device to achievethe effect of repairing leaks after the leaks of the water supply pipe well are expanded up and down. Compared with the prior art, the apparatus is simple in structure, convenient to use, capable ofconducting fixed-point maintenance for leaks, rapid and effective in modification and capable of saving maintenance cost.

Description

technical field [0001] The invention relates to the technical field of repairing pipe walls of underground wells, in particular to a partitioned downhole fixed-point injector and a method for its application in repairing water supply pipe wells. Background technique [0002] In recent years, with the rapid development of the national economy and the improvement of people's living standards, groundwater resources have increasingly become the lifeblood of social development. In the water-scarce areas of Northwest China, water supply pipe wells have become the top priority of people's livelihood. However, after ten to decades of continuous operation in most water supply tube wells, holes often appear due to casing corrosion in the well, and the appearance of holes often causes quicksand or gravel outside the casing to leak into the well through the holes Affect the normal work of the water pump in the water supply pipe well. As the pumping time of these affected water supply ...

AI Technical Summary

Problems solved by technology

However, after ten to decades of continuous operation in most water supply tube wells, holes often appear due to casing corrosion in the well. Affect the normal work of the water pump in the water supply pipe well

As the pumping time of these affected water supply pipe wells continues to prolong, the original holes will become larger and larger. In severe cases, the quicksand or gravel outside the water filter pipes will directly fill the water supply wells, eventually leading to the scrapping of the water supply wells.

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