RU231819U1 - CORE PHOTO DOCUMENTATION BOX - Google Patents

Abstract

The utility model relates to the geological industry and can be used for core placement and photo documentation. The container contains a parallelepiped-shaped box and a lid located thereon, closing the box, wherein the box includes a flat bottom, side and internal partitions, forming sections for core placement. In this case, the mentioned lid is made in the form of a cap, consisting of a four-support frame covered with light-proof fabric, inside which artificial lighting and a mount for a camera are installed, and the box is fastened to the cap by means of hinges with the possibility of opening and closing the box. The use of the utility model allows to improve the quality of the obtained core images, including in field conditions. 3 fig.

Description

The utility model relates to a container for core placement and its photo documentation, which can be used in various geological fields.

Core - a sample (column) of soil formed as a result of the annular destruction of the soil at the bottom of a well (GOST 12071-2014. Soils. Selection, packaging, transportation and storage of samples).

When lifting the downhole tool from the well to the daylight surface, the core is collected and placed in a core box in sequential order. After that, the soil is described in accordance with the rules established by "GOST R 58325-2018. Soils. Field description", and field documentation is prepared in accordance with the requirements of "GOST R 58889-2020. Engineering surveys. Requirements for maintaining and preparing field documentation during driving and testing engineering and geological workings".

Photographic documentation of a core is the process of photographing the soil extracted to the surface during the preparation of field documentation of a borehole.

When photographing core samples, the following conditions should be met to ensure the best quality images (Guide to Geomechanical Core Documentation. SRK Consulting Engineers and Scientists, 2009. - 46 p.):

the core must be uniformly illuminated with diffused light and the lighting conditions must be maintained throughout the project;

the camera must be at the same distance from the core to ensure a uniform angle of the photographs;

The photographs must show the label (tag with identification data), drilling depth marking (numbering of the extracted core interval), color strip and scale element (graduated tape).

A core box is a wooden container for core placement and has a specific shape. The box has a flat bottom and vertical walls. The core box differs from other wooden containers by the presence of separators - walls dividing the bottom into longitudinal sections in which soil samples are placed. The length of such sections is usually 100 cm, the width and height of the walls correspond to the diameter of the core being placed.

This configuration of the core box is the most common and is described in the following sources:

Guidelines for field documentation of engineering-geological and exploration work during road surveys. Approved on 04.10.1971 by GPI Soyuzdorproekt;

RD 51-60-82. Rocks. Instructions for selection, conservation and storage of core;

RD 31.3.02-94. Temporary instructions for field documentation of boreholes during engineering and geological surveys for the construction of marine transport facilities;

Patent RU No. 167343 (priority date: 03.12.2015).

Obtaining core images of the required quality using the box described above is impossible in field conditions. First of all, this is due to the fact that:

the conditions for core illumination are not met - during the working day, natural light changes, which leads to distortion of color rendering and the lack of the possibility of direct visual comparison of the core from photographs during subsequent processing;

the conditions for a single image angle are not met - there is no device for fixing the camera, as a result of which the distortions vary from picture to picture, which also complicates the comparison of the core from pictures during subsequent processing.

Another disadvantage is the lack of pre-applied markings, which forces the geologist to create a label with identification data before each image, apply a color strip (color target and tone gradation scale) and graduated tape (tape measure), and leads to an increase in the volume of work.

The prior art includes a portable camera frame system, the Discoverer Core Tray, designed for photo documentation of core samples and posted on the Dynamicsgex website (link: https://www.dinamicsgex.com.au/products/discoverer-core-photography-camera-frames). The portable system comprises a light-tight hood with a camera bracket strictly in the center above the box, and also has internal core lighting.

The system described above allows obtaining high-quality core images, but its use in the field is impossible. The main difficulty is that the use of the system requires a specially equipped room equipped with a roller table for conveyor movement of core boxes.

Based on the identified shortcomings of the state of the art, the technical task of this utility model is to create a device for photo documentation of a core sample, which will provide all the above conditions for obtaining the required quality of images in field conditions.

The technical result achieved by implementing this utility model is expressed in the absence of disadvantages of the state of the art, as well as in the possibility of obtaining high-quality core images from a single angle with uniform illumination when working in field conditions. This ensures high speed and ease of obtaining images, as well as uniformity of the data (images) format for the application of computer vision methods, which in turn leads to an increase in the speed of data processing and a reduction in the number of errors in their analysis.

In order to achieve the above technical result, the box for photo documentation of the core is a wooden container in the form of a parallelepiped, which includes a flat bottom, side and internal partitions forming sections for laying soil samples, secured with self-tapping screws, characterized in that the container is fastened with hinges and self-tapping screws to a cap consisting of a wooden four-support frame, fastened with self-tapping screws, covered with light-proof fabric, secured with a construction stapler, inside which artificial lighting is installed (an aluminum profile is secured with self-tapping screws to the frame support, the tape is glued to the profile) and a mount for a camera (a clamping mechanism secured to the upper edge of the support with self-tapping screws), fixing its position in the center above the box at a distance sufficient to obtain photographs without distortion.

Also, based on the optimization of the volume of work, it will be necessary to apply preliminary markings on the accessible surfaces that fall into the frame, with fields for applying identification data, drilling intervals, with graduated tapes and color stripes.

In this case, to operate such a structure in field conditions, an additional stand may be required for the box to support it above the ground, for easy movement and simple emptying of the sections with the core.

The essence of the utility model is explained by the diagram (Fig. 1), which shows a core box for photo documentation, where:

1 - container in the shape of a parallelepiped;

1.1 - flat bottom of the box;

1.2 - side and internal partitions;

2 - cap made of a four-support frame;

2.1 - artificial lighting (LED strips under each support of the cap);

2.2 - camera mount;

3 - fittings (hinges) that hold the drawer and cap together.

For convenience of working with soil samples, it is proposed to use a frame stand with a support frame (4) (Fig. 2) with a slope of the upper plane. The box is installed in the support frame of the stand by pulling the rod through the longitudinal central axis through the lower and upper edges of the frame and the box, and securing it with washers and nuts. The angle of inclination is adjustable from 0 to 30 degrees. The height of each of the four frame supports is also adjusted to ensure a level and stable position of the device. To fix the box in the support frame, a latch similar to a door latch is installed to prevent spontaneous rotation of the box around its axis. If necessary, wheels can be mounted to the base of the supports for easy movement of the entire structure around the work site.

In this case, the box for photo documentation of the core may additionally have a tilting mechanism, for example, allowing the container filled with the core to be rotated around its axis or have self-tilting sections in the bottom (Fig. 2, right). This will facilitate (physically) emptying the box and speed up the laying out of the core when drilling wells.

The preliminary marking is shown in Fig. 3 and consists of the following:

a graduated tape, 100 cm long, is glued to the front edges of the box (starting from the second from the left, every other one);

a color target and tone gradation scale are applied to the central front edge of the box (wider than the others due to the presence of a rod for attaching the box and a frame support), and a field for applying identification data is highlighted in white;

on the front faces of the support frame of the stand, fields for applying drilling intervals are highlighted in white;

Arrows are applied to the upper front faces of the box in the middle of each section to indicate the direction of core placement.

The material of the container for laying the core, cap and frame stand can be selected from: wooden boards and beams, fastened with self-tapping screws. Carbon fiber, composite, aluminum alloy can also be used as a material.

The light-proof covering of the cap can be made of lavsan fabric or fiberglass. Pieces of fabric corresponding to the shape of each edge of the cap are fixed with a construction stapler to each support, as well as to the upper and lower frame of the cap.

An all-weather LED strip can be chosen as the source of artificial lighting, while the power source can be a regular socket, generator or battery. The LED strip is mounted on the inside of each support of the cap.

The camera mount can be in the form of a clamp holder or a screw mount, and can also have height adjustment to control the distance between the lens and the core.

At the same time, the implementation of the utility model is in no way limited by the above materials.

Claims (1)

A container for photo documentation of a core sample, comprising a box in the form of a parallelepiped and a lid located on it, closing the box, wherein the box includes a flat bottom, side and internal partitions, forming sections for laying the core, characterized in that the said lid is made in the form of a cap, consisting of a four-support frame covered with light-proof fabric, inside which artificial lighting and a mount for a camera are installed, wherein the box is fastened to the cap by means of hinges with the possibility of opening and closing the box.