Drilling hole cleaning system and cleaning method

Abstract

The invention relates to a drilling cleaning system and cleaning method. The system includes a drilling rig. A drill pipe is arranged on the upper part of the drilling rig. A rotary nozzle is installed on the head of the drilling pipe. There are straight nozzles and oblique nozzles at the top, and recording devices and driving devices are installed on the drill pipe of the drilling rig. It has the advantages of long direction and positioning, etc., and can realize the cleaning of drilling holes in complex structural systems. It can greatly improve the effect of gas control, and realize the economy and rationality of the drainage engineering quantity. Through the synergistic effect of the straight nozzle and the oblique nozzle, when cleaning the borehole, it is easier to take the residue out of the borehole, and the obstacle removal ability is good, the cutting efficiency is higher, and it is easier to dredge and clean the blocked hole. Improvement is made on the rotary nozzle. Through the additional through-hole structure, a passage is formed with the sealing surface formed by the rotating shaft and the shaft core, and water is used as the gap filling passage and sealing surface to reduce the friction of the sealing surface and improve the service life of the sealing surface.

Description

Technical field: [0001] The invention relates to the technical field of borehole cleaning, in particular to a borehole cleaning system and a cleaning method. Background technique: [0002] my country's coal mine gas disasters seriously restrict the safe and efficient production of mines. As a fundamental measure to control coal mine gas disasters, gas drainage is closely related to the safe production of mines. The quality of drainage drilling and the effectiveness of drainage are not only restricted by the initial construction process of the drilling, but also depend on the structure, mechanical properties and stress state of the coal and rock mass. At present, my country's coal mine gas drainage drilling is still in the stage of emphasizing production and not paying attention to maintenance. After the completion of drilling and drainage at a high cost, it will be left alone, making it automatically exhausted. There is a lack of effective maintenance and management technolo...

AI Technical Summary

Problems solved by technology

[0007] However, for drilling with a single and simple structure, the existing drilling cleaning and repairing equipment can still meet the engineering needs

However, for complex drilling structures, such as feathered drilling, and the newly proposed bionic vein drilling, this type of multi-branch drilling structure, there are few equipment that can realize the cleaning and repair of such drilling

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