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Reservoir microfracture identification method and device and storage medium

An identification method and micro-fracture technology, applied in the field of petroleum exploration, can solve the problem of inability to effectively identify and extract micro-fractures in unconventional oil and gas reservoirs, and achieve the effect of convenient analysis

Pending Publication Date: 2021-09-28
YANGTZE UNIVERSITY
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned technical deficiencies, provide a reservoir micro-fracture identification method, equipment and storage medium, and solve the technical problem that the micro-fractures in unconventional oil and gas reservoirs cannot be effectively identified and extracted in the prior art

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  • Reservoir microfracture identification method and device and storage medium
  • Reservoir microfracture identification method and device and storage medium

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Embodiment Construction

[0062] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0063] see figure 1 , the reservoir micro-fracture identification method provided by the embodiment of the present invention comprises the following steps:

[0064] S100. Acquire the CT image of the reservoir, determine the optimal gray-scale segmentation threshold according to the pixels in the gray-level of the CT image of the reservoir, and perform binarization on the CT image according to the optimal gray-scale segmentation threshold processing to obtain a binary image containing micropores and microcracks;

[0065] S200. Calculate the development characteristic parameters of micropores and m...

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Abstract

The invention discloses a reservoir microfracture identification method and device and a storage medium. The method comprises the steps: obtaining a CT image of a reservoir, determining an optimal gray segmentation threshold value according to pixel points in the gray level of the CT image of the reservoir, carrying out the binarization processing of the CT image according to the optimal gray segmentation threshold value to obtain a binarized image containing the micropores and the microfractures; and according to the binarized image, calculating development characteristic parameters of the micropores and the microfractures, and according to the development characteristic parameters of the micropores and the microfractures, extracting the microfractures in the binarized image. The technical problem that in the prior art, microfractures in unconventional oil and gas reservoirs cannot be effectively recognized and extracted is solved.

Description

technical field [0001] The invention relates to the technical field of petroleum exploration, in particular to a reservoir micro-fracture identification method, equipment and storage medium. Background technique [0002] Reservoir fractures can be mainly divided into visible fractures and micro-fractures. Micro-fractures are the main channels for oil and gas seepage, and are important bridges and bonds that effectively connect micro-pores and macro-fractures. Micro-fracture analysis and research work in tight oil, tight gas, Resource exploration fields such as shale oil and shale gas are extremely important. [0003] The development of a large number of natural fractures is very beneficial to the exploration and development of unconventional oil and gas in the later stage. Quantitative characterization of the development of micro-fractures through reservoir analysis is of key guiding significance for the selection of favorable fracturing layers and intervals for unconvention...

Claims

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Application Information

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IPC IPC(8): G06T7/11G06T7/136G06T5/00
CPCG06T7/11G06T7/136G06T2207/10081G06T2207/20032G06T5/70
Inventor 张吉振韩登林王晨晨林伟朱亚玲
Owner YANGTZE UNIVERSITY
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