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Rock core digital collection system and method

A collection system and core technology, applied in the fields of earthwork drilling, image data processing, complex mathematical operations, etc., can solve the problems of difficult transportation and preservation of physical cores, and inability to obtain cores, etc.

Inactive Publication Date: 2020-10-27
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the above-mentioned deficiencies in the prior art, a digital collection system and method for rock cores provided by the present invention solves the problems that rock cores cannot be collected due to broken rock formations, too large apertures, and the physical cores are difficult to transport and preserve.

Method used

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  • Rock core digital collection system and method
  • Rock core digital collection system and method

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Embodiment 1

[0044] Such as figure 1 As shown, the present invention provides a digital acquisition system for rock cores, comprising a wellhead pulley 1, a depth sensor 2 connected to the wellhead pulley 1, a tripod 3 and a winch 4, an industrial computer unit connected to the depth sensor 2, and respectively The downhole probe unit and the computer image processing unit connected with the industrial computer unit; the winch 4 is positioned on the tripod 3, and the wellhead pulley 1 is positioned on the tripod 3 and is positioned above the winch 4; the depth sensor 2 is used to obtain The rotation angle of the wellhead pulley 1; the downhole probe unit is used to capture the 360-degree digital image sequence of the inner wall of the borehole according to the rotation angle; the industrial computer unit is used to send the received digital image sequence to the computer image processing unit; computer image processing The unit is used to process the digital image sequence by using an inter...

Embodiment 2

[0073] Such as Figure 9 As shown, the present invention also provides a kind of digital acquisition method of rock core, and its realization method is as follows:

[0074] S1. Put the downhole probe into the hole, and use the depth sensor to obtain the rotation angle of the wellhead pulley;

[0075] S2. According to the rotation angle, use the camera to take a 360-degree digital image sequence of the inner wall of the borehole through the conical mirror;

[0076] S3. Process the digital image sequence by using an interpolation weighting method, and perform 3D restoration on the processed image to obtain a digital image of the rock core, and complete data collection of the rock core.

[0077] In this embodiment, the principles of expansion and interpolation are as follows Figure 7 shown, from Figure 7 It can be seen that the hole wall is projected on the conical mirror, and the aperture is , but the top radius of the conical mirror is , while the bottom radius is , ...

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Abstract

The invention provides a rock core digital collection system and method, and belongs to the technical field of geological prospecting. The system comprises a well mouth pulley, a depth sensor, a tripod, a winch, an industrial personal computer unit, a downhole probe unit and a computer image processing unit. The depth sensor, the tripod and the winch are connected with the well mouth pulley. The industrial personal computer unit is connected with the depth sensor. The downhole probe unit and the computer image processing unit are connected with the industrial personal computer unit. Through the drilling full well wall imaging technology, after a hole is drilled, through hole cleaning and clearing, a drilling collection probe is put into the hole, the depth sensor is used in cooperation todirectly collect the 360-degree complete digital image sequence of the inner hole of the drilled hole, through the digital image processing technology, the downhole collected image sequence is subjected to digital processing, expanding, image division, edge tracking and splicing, 3D restoring is carried out, and therefore a complete rock core digital image is obtained. Through the above design, the problem that rock cores cannot be collected due to rock layer crushing and too large hole diameters is solved, and rock core digital collection is achieved.

Description

technical field [0001] The invention belongs to the technical field of geological exploration, and in particular relates to a rock core digital acquisition system and method. Background technique [0002] In engineering work such as engineering geophysical exploration, hydrogeology, mineral exploration, etc., although there are many non-destructive detection methods, such as electrical methods, magnetic methods, and acoustic wave detection, etc., it is usually necessary to take cores through drilling to detect It is calibrated and corrected in order to obtain accurate data of subsurface geological bodies. Even in many engineering works, core drilling is still the main survey method. However, the transportation and preservation of rock cores is a time-consuming and labor-intensive task, and it is not easy to trace. Although some digital technologies are already in use, they are mainly limited to taking pictures of the collected rock cores, and it is difficult to reproduce th...

Claims

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Application Information

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IPC IPC(8): E21B47/002E21B23/14G06T3/40G06T7/11G06F17/16
CPCE21B23/14G06F17/16G06T3/4023G06T3/4038G06T7/11
Inventor 王权海赵义红刘飚
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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