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Coal reservoir fracture observation submicroscopic analysis technology

A technology for microscopic analysis of coal reservoirs, applied in the direction of analyzing materials, material analysis by optical means, measuring devices, etc. problems, to achieve the effect of reducing labor costs, improving efficiency, and increasing reliability

Inactive Publication Date: 2013-06-19
肖建新 +1
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Problems solved by technology

[0003] In order to solve the problems of poor resolution of small cracks observed by naked eyes, inconvenient statistics of cracks in microscope observation, and low efficiency of coal reservoir cracks observation in the observation of coal reservoir cracks, the present invention provides a coal reservoir crack quantification is simple, continuous recognition is convenient and Coal reservoir fracture observation submicroscopic analysis technology with high fracture observation efficiency

Method used

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  • Coal reservoir fracture observation submicroscopic analysis technology

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Embodiment Construction

[0018] like figure 1 As shown, the block coal light sheet of the present invention can be an ordinary light sheet, and the size of the coal light sheet is preferably a conventional size: 6*4*1cm. After selecting the light sheet, keep the smooth surface clean.

[0019] Then place the coal light sheet on the brown-yellow backing paper sheet, select a suitable reference scale beside the light sheet, and use a ruler for the reference scale. Choose a professional high-resolution SLR digital camera (not a card camera) with a shutter release for easy posing, and install a 90mm fixed-focus macro lens on a tripod stand.

[0020] The choice of shooting angle of the camera can clearly show the angle of the crack, pay attention to avoid the reflection of the coal light film (the coal light film itself is easy to reflect light), and then shoot, the photo effect should show all the mirror part of the coal light film and include the reference scale next to it. Number the photos taken and sa...

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Abstract

The invention discloses coal reservoir fracture observation submicroscopic analysis technology which is used for observing fractures of coalbed methane reservoir stratums. The technology includes preparing a lump coal polished section. The lump coal polished section is photographed through a professional camera. The photographed pictures are numbered according to the sequence and stored. And then, the pictures are partially enlarged in a computer and the fractures are counted. The professional camera is arranged on a fixed support and is aligned with the lump coal polished section, and a fixed focus macro lens is installed on the camera. A reference proportional scale is placed next to the lump coal polished section, and the lump coal polished section and the reference proportional scale are placed in the same picture in the photographing process. The pictures of the lump coal polished section are opened through image editing software in the computer, and then the positions with the fractures in the pictures are marked and recorded. Compared with the existing coal reservoir naked-eye analysis technology and the microscopic analysis technology, the coal reservoir fracture observation submicroscopic analysis technology is capable of carrying out submicroscopic analysis on characteristics which can not be analyzed through naked eyes and a microscope, and is capable of improving coal reservoir observation efficiency, reducing manpower cost and increasing observation reliability.

Description

technical field [0001] The invention relates to a coal bed gas reservoir fissure observation technology, in particular to a coal reservoir fissure observation submicroscopic analysis technology. Background technique [0002] At present, coal reservoir fractures are divided into two types: macroscopic fractures and microscopic fractures, and the microscopic fracture observation technology is mainly microscope technology, which relies on microscopes for observation. Its observation field of view is small, the diameter of the field of view under low magnification is generally less than 5mm, and the diameter of field of view under high magnification is generally less than 2.2mm. Macro-cracks are mainly visually observed, and the observation field of view is small and large, and the resolution of small-scale cracks is poor. However, the extension of the micro-fracture system in coal reservoirs is usually more than ten times larger than this field of view. Therefore, it is diffic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/84
Inventor 肖建新何乃祥
Owner 肖建新
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