Quantitative characterization method and application of rapid determination of organic matter pores based on scanning electron microscopy

Abstract

The invention belongs to the technical field of organic matter pore identification, and discloses a quantitative characterization method and application for quickly determining organic matter pores based on a scanning electron microscope. The scanning electron microscope is used to determine the distribution position of the organic matter; the energy spectrometer and the form of the organic matter are used to determine the microscopic component type; Determine the organic pores by using the microscopic components of organic matter; determine the distribution position of organic matter, determine the type of microcomponents, and determine the development of organic pores. The present invention adopts scanning electron microscope to identify organic matter microscopic components, which can effectively solve the problem of small observation field when using scanning electron microscope to observe organic matter pores, it is difficult to find organic pores, and the observation time is long, which reduces the efficiency of experiments and scientific research. The scanning electron microscope of the present invention has high magnification, strong three-dimensional image, and simple sample preparation method; the relationship between organic matter pores and microcomponents can be directly observed, the enrichment mode, morphological characteristics and Contact relationship with minerals, identification of organic matter pores.

Description

Technical field[0001]The invention belongs to the technical field of organic matter pore identification, and particularly relates to a quantitative characterization method and application for quickly determining organic matter pores based on scanning electron microscopy.Background technique[0002]At present, the closest existing technology: At this stage, the exploration and development of shale gas is of great significance to changing the resource structure of my country and improving energy shortages. A large number of micro-nano pores are developed in shale gas reservoirs, and their structural characteristics are important indicators for measuring and evaluating shale gas reservoirs. Organic pores are closely related to the physical properties of shale reservoirs. Through the identification of organic pores, the physical properties of shale reservoirs can be preliminarily judged, which has guiding significance for the exploration and development of shale gas.[0003]At present, for ...

AI Technical Summary

Problems solved by technology

In general, nanoscale organic pores need to be observed tens of thousands of times under the field of view, and repeated selection of the field of view will take a long time and waste time.

[0005] ②Case 2: Zoom in on the organic matter. When the organic matter is found under the 6000X field of view, zoom in on the organic matter, but under the 120000X field of view, it is found that the organic pores are not developed, which is not conducive to the effective observation of the morphological characteristics of the organic matter. Repeated selection of viewsheds, time-consuming and other issues

[0008] To sum up, the problems existing in the existing technology are: the scanning electron microscopy traditional imaging analysis technology of the micropores of shale reservoirs currently exists when using the scanning electron microscope to observe the organic matter pores. The field is small, it is difficult to find organic pores, and the problems such as lack of development and long observation time reduce the efficiency of experiments and scientific research

[0009] Difficulty in solving the above technical problems: at the current stage, the use of field emission scanning electron microscopy to observe organic pores needs to be observed under a field of view magnified tens of thousands of times, and it is difficult to find organic pores with a magnified field of view. Duration and other issues

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