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Rock core coring drill with inner spiral double pipes

A coring tool and internal helix technology, applied in the direction of extracting undisturbed core devices, drill bits, drill pipes, etc., can solve the problems of easy jamming of coring tools, improve drilling efficiency, ensure integrity, and increase effective content Effect

Active Publication Date: 2019-11-26
THE FIRST INST OF OCEANOGRAPHY SOA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a core drilling tool with inner helical double tubes, aiming to solve the problem that the existing core drilling tools are easy to jam

Method used

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  • Rock core coring drill with inner spiral double pipes
  • Rock core coring drill with inner spiral double pipes
  • Rock core coring drill with inner spiral double pipes

Examples

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Embodiment Construction

[0043] In order to better explain the present invention and facilitate understanding, the present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0044] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

[0045] In addition, in the present invention, descriptions such as "first", "second" and so on are used for description purposes only, and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of indicated technical features. Thus, the features defined as "first" and "second" ma...

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Abstract

The invention relates to the field of mineral resource collecting, in particular to a rock core coring drill with inner spiral double pipes. The rock core coring drill comprises a joint, the outer pipe, a transmission flow guiding block, the inner pipe and a drill bit; the joint is in a pipe shape, and the outer pipe is in butt joint with the joint; the transmission flow guiding block is arrangedin the outer pipe and arranged close to the joint; the inner pipe is arranged in the outer pipe through the transmission flow guiding block in a sleeved mode, the inner pipe and the outer pipe can rotate relatively, and a spiral guiding strip is arranged on the inner surface of the inner pipe; the drill bit is in a pipe shape and is mounted at the free end of the outer pipe in a butt-joint mode, the drill bit blocks an annular cavity between the outer pipe and the inner pipe, and a flow draining hole enabling the annular cavity to communicate with the external environment is formed in the drill bit; and a flow guiding hole enabling the interior of the joint to communicate with the annular cavity is formed in the transmission flow guiding block, and a drainage hole enabling the interior ofthe inner pipe to communicate with the external environment is further formed in the transmission flow guiding block. The spiral guiding strip of the inner pipe has upward conveying force on a rock core, so that the problem of sticking of the rock core in a drill pipe is effectively solved.

Description

technical field [0001] The invention relates to the field of mineral resource collection, in particular to a core drilling tool with inner helical double-tube cores. Background technique [0002] The ocean is a huge treasure house of human beings, containing a large amount of resources. In addition to more than 80 elements such as hydrogen, oxygen, chlorine, sodium, magnesium, calcium, potassium, gold, uranium, bromine, and iodine in seawater, seabed mineral resources are also extremely rich. . Cobalt-rich crusts are mainly distributed on the tops and slopes of seamounts or sea platforms at a depth of 1000-3000m; hydrothermal polymetallic sulfides are mainly distributed on the tops of active oceanic ridges at a water depth of 2600m. In the resource investigation of seabed mineral resources such as cobalt-rich crusts and hydrothermal polymetallic sulfides, sampling is required. [0003] In the drilling of loose and fragile formations such as hydrothermal polymetallic sulfid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B25/00E21B25/18E21B10/02E21B10/60E21B17/22E21B21/00
CPCE21B25/00E21B25/18E21B21/00E21B10/02E21B10/60E21B17/22
Inventor 李传顺吴冬华
Owner THE FIRST INST OF OCEANOGRAPHY SOA