A kind of non-hard rock coring bit and its processing technology

Abstract

The invention relates to a non-hard rock coring drill bit and a processing technology thereof, belonging to the technical field of drill bits for geological exploration. The technical solution is: positive water ports (4) and anti-water ports (5) are arranged alternately at the end of the drill bit steel body (1), the protrusions between the adjacent positive water ports and anti-water ports are tire blocks, and the tire blocks include tire blocks one (2) and tire block two (3); between the adjacent positive water outlet and reverse water port opposite to the spiral direction is tire block one (2), and the adjacent positive water port (4) and reverse water port (5) opposite to the spiral direction There are tire blocks two (3) in between, and tire block one and tire block two are arranged alternately on the circumference of the end of the steel body of the drill bit. Beneficial effects of the present invention: convenient manufacture, reasonable structure, reduced occurrence of collapse and sticky drills; reduced frequent replacement of drill bits in soft rock formations, improved drilling efficiency and reduced drilling costs, through the actual use of on-site machines, The purpose of the invention is achieved, and the problem of difficult coring in soft rock formations in the technical field of drilling for geological exploration is solved.

Description

technical field [0001] The invention relates to a non-hard rock coring drill bit and a processing technology thereof, belonging to the technical field of drill bits for geological exploration. Background technique [0002] Drill bits for geological exploration usually use coring diamond drill bits, and the geology for exploration can be divided into soft formations and hard formations. The existing technology is relatively mature for coring in hard formations. The lip surface of commonly used coring diamond bits is mostly zigzag and flat. Shallow, generally 2-3mm. When drilling in hard formations, the diamond in the bit matrix will grind the rock and produce finer rock powder. Under the impact of water flow, the rock powder can be washed out from the nozzle of the drill bit. , discharged to the ground. Soft strata mainly include clay strata, sand strata, mudstone and non-silicified limestone strata, which are characterized by loose and unstable soil, and core diamond bits ...

AI Technical Summary

Problems solved by technology

Soft strata mainly include clay strata, sand strata, mudstone and non-silicified limestone strata, which are characterized by loose and unstable soil, and core diamond bits are prone to diameter shrinkage, collapse, and paste during drilling. Drilling and other problems, when drilling, because the rock formation is soft and loose, the drill bit cannot form a grinding effect on the rock formation, but only a scraping effect, and the formed rock powder particles are relatively large, which can easily block the nozzle of the drill bit and cause pump pressure. Elevation makes it impossible to drill; when drilling for soft bottom (soft rock), due to major defects in the structure of the nozzle, the stability of the drilling tool is poor, the disturbance to the core is large, and the core recovery rate is low, resulting in blockage of the drill bit and muddled drilling , this problem has not been effectively solved

In addition, the working layer structure of the coring diamond drill block in the prior art is unreasonable, the drilling efficiency is low, and the drilling cost is increased.

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