Jet type loose-wing reaming drilling tool and manufacturing method and using method thereof

Abstract

The invention discloses a jet type loose-wing reaming drilling tool and a manufacturing method and using method thereof, and belongs to the field of reaming drilling tools. The reaming drilling tool comprises a bit body, the upper end of the bit body is provided with a male connector, the lower end of the bit body is embedded with a pilot cutting tool, 3-4 sets of wing plate bases are evenly fixed on the outer periphery of the bit body, a reaming wing plate is fixed on the wing plate base detachedly, the reaming wing plate is embedded with a reaming cutting tool, the bit body located at the bottom of the each wing plate base is provided with a nozzle which is communicated with the inner cavity of the bit body and of which a nozzle tip faces the ground vertically, the lower portion of the inner cavity of the bit body is provided with a water partition plate, and the water partition plate is provided with a plurality of water-sprouts evenly distributed. According to the jet type loose-wing reaming drilling tool and the manufacturing method and using method thereof, flushing liquid is used for playing a role of waterpower rock breaking, and the reaming efficiency is improved; after the reaming wing plate is worn, the reaming wing plate can be replace timely, the whole cutting cools are not needed to replace, and therefore the drilling tool cost is decreased by 30-60%; at the same time, the drilling tools are good in guiding, stable in operation, and good in reaming quality; besides, both the manufacturing and usage of the drilling tools are more simple and convenient.

Description

technical field [0001] The invention relates to a reaming drilling tool, more specifically, to a jet-type movable wing reaming drilling tool and its manufacturing method and usage method, which are mainly used in geological survey, water supply pipe well and other engineering fields. Background technique [0002] For drilling in engineering fields such as geological surveys and water supply pipe wells, the drilled strata are mainly sedimentary rocks (mudstone, shale, sandstone, slate, limestone, etc.) and Tertiary and Quaternary sedimentary soil layers, and the drilling depth is 50 ~300m. Due to the design of such engineering holes, the final drilling diameter is relatively large The hole cannot be formed at one time, and the pilot hole needs to be drilled in advance (outer diameter of the drilled hole ), and then 1 or 2 times of reaming can reach the designed drilling diameter. Ordinary wing plate reaming drills are often used for reaming, that is, 3 to 4 reaming wings...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of existing reaming drills such as low reaming efficiency and high cost of use of the drill bit, and provide a jet-type movable wing reaming drill and its manufacturing method and use method. By adopting the technical scheme of the present invention, Use the high-speed jet of flushing fluid to soften or break the rock on the wall of the reaming hole, exert the effect of hydraulic rock fragmentation, and complete the cleaning of the reaming wing at the same time, ensure the effective reaming of the reaming wing and improve the efficiency of reaming. Under the same conditions, it can Improve the reaming efficiency by 20-30%; and the reaming flange can be replaced in time after wear, without the need to replace the entire drilling tool, reducing the cost of the drilling tool by 30-60%; at the same time, the pilot part at the front of the drilling tool is used for guidance, and the drilling tool Good guidance, stable work, good reaming quality; moreover, the production and use of drilling tools are easier and more convenient

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