Quantitative characterization method of shale structures

A quantitative characterization and shale technology, applied in image data processing, instruments, calculations, etc., can solve problems such as inapplicable shale

Active Publication Date: 2016-07-27
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

At present, research on shale gas mainly focuses on porosity, permeability, selection of "hydrocarbon-rich sweet spot" and drilling hydraulic fracturing characteristics. There is still a gap in the quantitative and systematic research of the structure, and the existing description methods of glutenite reservoir structure are not suitable for shale

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  • Quantitative characterization method of shale structures
  • Quantitative characterization method of shale structures
  • Quantitative characterization method of shale structures

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Embodiment Construction

[0032] At present, there is no clear and reasonable definition of shale structure, and the traditional clastic rock structure analysis method cannot well reflect the laminar structure characteristics of shale. To solve this problem, the present invention provides a method for quantitatively analyzing shale structural features based on image recognition technology. Guided by the theory of sedimentology, this method analyzes the features such as clarity, continuity, density or thickness of laminae that can reflect paleo-current and paleo-climate changes during the depositional period, and combines the content and size of felsic particles contained in shale , distribution, arrangement, etc., comprehensively reflect the structural characteristics of shale, and on this basis, use the gray level co-occurrence matrix method to further quantitatively analyze the structure of the above shale. The invention can effectively carry out differential quantitative research on shale structure,...

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Abstract

The invention provides a quantitative characterization method of shale structures. According to the method, based on the guidance of sedimentologic theories, lamina features of a shale lamina, such as clarity, continuity and density or thickness, which can reflect paleocurrent and paleoclimate change in a sedimentary period are analyzed; and based on the content, size, distribution, arrangement and the like of felsic particles contained in shale, the structural features of the shale can be comprehensively reflected; and a gray level co-occurrence matrix method in the image recognition technology is utilized to further quantitatively analyze the above shale structure. With the method of the invention adopted, quantitative research on the differences of the shale structures can be effectively carried out, and technical support can be provided for the promotion of target evaluation and exploration and development of shale oil and gas.

Description

technical field [0001] The invention belongs to the field of shale oil and gas exploration and development and target evaluation research, and in particular relates to a method for quantitatively analyzing shale structural characteristics by using gray scale co-occurrence matrix technology. Background technique [0002] In recent years, due to the great success of shale gas exploration in North America, shale gas has attracted great attention in my country. At present, research on shale gas mainly focuses on porosity, permeability, selection of "hydrocarbon-rich sweet spot" and drilling hydraulic fracturing characteristics. The quantitative systematic research on the structure is still blank, and the existing description methods of glutenite reservoir structure are not suitable for shale. Due to the complex lithology of shale in my country, there are significant differences in structure, and the structural characteristics have a strong control effect on the porosity and per...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T7/60
CPCG06T7/0002G06T7/60G06T2207/30108
Inventor 王冠民隋杨林旭梅钱生熊周海张婕
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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