Drilling and soil sample taking double-wall drilling rig

A drilling tool and soil sample technology, which is applied in the direction of drill pipe, drill pipe, drilling equipment, etc., can solve the problems of complex structure and inconvenient operation of the soil sampling pipe, and achieve the effects of high soil sampling efficiency, convenient processing and convenient operation

Active Publication Date: 2015-11-18
JIANGXI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two main types of rotary soil fetchers: single-action double-pipe soil fetcher and double-action double-pipe soil fetcher. The structure of these two soil fetching pipes is more complicated and inconvenient to operate

Method used

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  • Drilling and soil sample taking double-wall drilling rig
  • Drilling and soil sample taking double-wall drilling rig

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] As shown in the figure, the present invention is made up of water tap 1, driving drill pipe 2, drill pipe joint 3, drill pipe 4, drill bit 5 five parts. Among them: the faucet 1 includes a water inlet pipe 11, a water distribution box 12, and the water distribution box car has an inner thread; the active drill pipe 2 includes a water-stop gasket 21, an annular bracket 22, an air vent 23, and an inner pipe of the active drill pipe 24 , active drill pipe outer pipe 25, active drill pipe flushing liquid annular passage 26; drill pipe 4 includes drill pipe inner pipe 41, drill pipe flushing liquid annular passage 42, drill pipe outer pipe 43, drill pipe inner and outer pipe cross connection frame 44 ; the drill bit 5 includes a bit matrix 51 , a bit flushing fluid channel 52 , and a bit cutting edge 53 . The water faucet 1 is connected with the active dri...

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Abstract

The invention belongs to drilling equipment, and particularly relates to a drilling and soil sample taking double-wall drilling rig. The drilling and soil sample taking double-wall drilling rig comprises a drill pipe, wherein the upper end of the drill pipe is connected with a driving drill pipe through a drill pipe joint; the upper end of the driving drill pipe is connected with a faucet; the lower end of the drill pipe is connected with a drill bit; the drill pipe comprises a drill pipe outer tube and a drill pipe inner tube; the drill pipe inner tube is fixed in the drill pipe outer tube; a drill pipe flushing liquid annular channel is formed between the drill pipe outer tube and the drill pipe inner tube; the driving drill pipe comprises a driving drill pipe outer tube and a driving drill pipe inner tube; the driving drill pipe inner tube is fixed in the driving drill pipe outer tube; a driving drill pipe flushing liquid annular channel is formed between the driving drill pipe outer tube and the driving drill pipe inner tube; an exhausting hole which obliquely extends to the outer wall from the inner wall is formed in the upper portion of the driving drill pipe inner tube; and an upper end opening of the exhausting hole is also provided with a water-stop sealing gasket. The drilling and soil sample taking double-wall drilling rig is simple in structure and convenient to operate; disturbance on soil samples is small during drilling and sample taking; and soil sample taking efficiency is high.

Description

technical field [0001] The invention belongs to drilling equipment, in particular to a double-wall drilling tool for drilling and taking soil samples. Background technique [0002] Drilling is an important means for geological exploration to obtain physical geological data. Drilling requires not only improving drilling efficiency, but more importantly, ensuring the quality of samples taken. The quality of these samples directly affects engineering geological surveys, geological structure judgments, and mineral resources. Accuracy and reliability of appraisals, hydrogeological surveys, and submissions of mineral reserves. Therefore, how to obtain complete, accurate and reliable physical geological data from the borehole is one of the key technologies of the drilling work. [0003] The main task of engineering geological drilling is to take core or undisturbed soil samples in the rock and soil layer. It mainly drills into the surface soil layer and has special sampling requir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/06E21B17/00
Inventor 陈飞
Owner JIANGXI UNIV OF SCI & TECH
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