Novel electric directional coring apparatus

A corer and electric technology, which is used in the extraction of undisturbed core devices, measurement, wellbore/well components, etc., can solve the problems of restricting the popularization and application of directional coring technology, difficult assembly and disassembly, and complex structure, so as to reduce the cutting work. reduce power consumption, reduce the impact of mechanical compartment seals, and improve reliability

Inactive Publication Date: 2010-03-17
CHINA UNIV OF GEOSCIENCES (BEIJING) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many coring devices at home and abroad, but most of them are complex in structure, difficult to assemble and disassemble, and are limited by geological conditions such as drilling hole depth

Method used

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  • Novel electric directional coring apparatus
  • Novel electric directional coring apparatus
  • Novel electric directional coring apparatus

Examples

Experimental program
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Embodiment Construction

[0029] This design consists of the following components:

[0030] Battery compartment 1, Mechanical compartment 2, Motor 3, Pin shaft 4, Coupling 5, Shaft 6, Drill bit 7, Sleeve 8, Electrode seat 9, Spring 10, Guide column 11, Support nut 12, Pressure balance sleeve 13, Balance nut 14, electrode connecting column 15, conductive copper ring 16, slotted round head screw 17, switch spring 18, electrode holder 19, backflow channel 20.

[0031] When the diamond micro-drill (7) in the directional marking device did not touch the end face of the rock core, the screw (17) as a switch control did not contact the conductive copper ring (16), the whole circuit was disconnected, and the motor (3) did not work; when the micro-drill (7) is in contact with the end face of the rock core, the micro-drill (7), the shaft (6), and the motor (3) move up together, and the screw (17) is driven by the electrode holder (9) through the switch spring (18) Press it back in the guide groove of the motor ...

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Abstract

The invention relates to a novel electric directional coring apparatus, belonging to a tool specially designed for geologic exploration bore core directional coring. The electric directional coring apparatus is put in a hole for conducting marking on a bore core with an unchanged original position during the process of drilling and coring, and the original positioning of the bore core is finishedthrough drilling and coring. The electric directional coring apparatus comprises two parts of a mechanical cabin and a battery cabin, wherein the mechanical cabin mainly comprises a torque-balance and constant-pressure guide part, a micro-drill rotary drilling part, a pressure balancing part and a marking and hole-drilling control part. The apparatus has the advantages of compact structure, simple operation and high reliability; and in addition, the cost of the apparatus is lower than that of the existing directional marking device or the method, and the application range is wide (caliber is not less than 60 mm), therefore, the apparatus is suitable for popularization and application in a directional coring drilling well.

Description

technical field [0001] This electric directional coring device is a geological instrument used in geological exploration, oil drilling and underground measurement. technical background [0002] Directional coring is accomplished by drilling and coring using high-precision multi-point inclinometers and specially designed core directional coring tools. When drilling and coring, use an electric directional coring tool to mark the end face of the core that has not changed its original position at the bottom of the hole. At present, there are many coring devices at home and abroad, but most of them are complex in structure, difficult to assemble and disassemble, and are limited by geological conditions such as drilling hole depth, hole diameter, rock core breakage and cross-sectional shape, which limit the promotion of directional coring technology. For this purpose, a new type of electric directional coring device was designed and developed. Contents of the invention [0003...

Claims

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Application Information

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IPC IPC(8): E21B25/16E21B47/02
Inventor 卜长根朱恒银
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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