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Auxiliary heating drilling type freezing core-taking drilling tool

A technology for auxiliary heating and coring drilling tools, which is applied in the direction of extracting undisturbed core devices, earthwork drilling and mining, etc., can solve problems such as uncontrollability, and achieve the effects of accelerated efficiency, simple structure, and low cost of use

Active Publication Date: 2017-07-07
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when drilling rigs such as hot-melt drills into different ice layers, due to the different thermal properties of each ice layer, the drilling procedure parameters used for each drilling, the shape and structure of the drilling tool will have an impact on the heat transfer efficiency, and there are many problems. large uncontrollability

Method used

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  • Auxiliary heating drilling type freezing core-taking drilling tool

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Embodiment Construction

[0017] see figure 1 As shown, the present invention is composed of a power supply module, an auxiliary heating drilling frozen coring module, and a conventional drilling tool module. The power supply module is located at the upper end of the auxiliary heating drilling frozen coring module. The space is connected and fixed by the snap button 16, and the power supply is provided by plugging. The power supply module and the auxiliary heating drilling, freezing and coring module are installed in the conventional drilling tool module;

[0018] The power supply module is composed of a battery fixing card holder 2, a battery 3, a battery protective case 4, a pin seat 5, a concave pin sealing seat 7, a ball drop base 8, a single-action contact switch 9, and a spring 10. The battery fixing card The base 2 is fixed on the conventional drilling tool 1, the battery 3 is installed on the battery fixing holder 2, the battery protection case 4 is arranged outside the battery 3, and the mud c...

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Abstract

The invention discloses an auxiliary heating drilling type freezing core-taking drilling tool and relates to the field of polar ice layer core taking and frozen soil core taking. The auxiliary heating drilling type freezing core-taking drilling tool is composed of a power source module, an auxiliary heating drilling freezing core-taking module and a regular drilling tool module. The power source module is used for supplying power to a semiconductor chilling plate of the auxiliary heating drilling freezing core-taking module, a hot source and a cold source are generated, the hot source heats drilling fluid for auxiliary drilling to enable an ice core to rapidly enter a rock core cylinder, and the cold source is used for refrigerating the rock core cylinder to ensure the ice core not to be melted in the rock core cylinder in the well drilling and drill lifting process and ensure core-taking integrity. The auxiliary heating drilling type freezing core-taking drilling tool is simple in structure and easy to produce and maintain; repeated utilization can be achieved, and using cost is low; through switching of the different modules, core-taking efficiency is improved and ensured; and only the heating effect is exerted on the annular section of a broken rock, environmental pollution is avoided, the natural state of a rock core can be kept to a largest extent, and the auxiliary heating drilling type freezing core-taking drilling tool has obvious effects on core taking under special conditions and rock core preservation.

Description

technical field [0001] The invention relates to an underground coring device, in particular to an auxiliary heating drilling and freezing core drilling tool. Background technique [0002] Polar ice drilling began in the middle of the 20th century. In order to ensure the integrity of the drilled ice core, it is required to speed up the drilling speed as much as possible to obtain the ice core quickly, so as to prevent the ice core from being damaged due to the rotating contact friction between the drilling machine and the ice layer during the drilling process, which will affect the extraction. heart effect. Ice drilling was first attempted with conventional rotary drilling rigs. However, due to the high strength of drill pipe disassembly and connection, long tripping time, transportation and energy supply problems of conventional drilling rigs, heavy commercial drilling rigs are not suitable for ice coring. To this end, it is necessary to design drilling tools specially for ...

Claims

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Application Information

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IPC IPC(8): E21B25/00
CPCE21B25/00Y02E60/10
Inventor 郭威陈强李强贾瑞赵帅
Owner JILIN UNIV
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