Component Extraction Method for Digital Core of Complex Carbonate Reservoir

Abstract

The invention discloses a method for extracting various components of a digital core for complex carbonate reservoirs. By loading electrical imaging logging data, the electrical imaging logging data is preprocessed to obtain a static image of electrical imaging logging; The image inpainting method generates the full-bore electrical imaging image; and converts the full-bore electrical imaging image into a grayscale image. On the grayscale image, the maximum variance method between two classes is used to obtain the grouping threshold. The components of the reservoir are automatically extracted; and the threshold adjustment slider is set, and the components of the three types of carbonate reservoirs are extracted interactively and finely by adjusting the segmentation double threshold. It adopts the maximum variance method between two types to automatically extract the components of carbonate rock reservoirs, and realizes the accurate extraction of the pore parts, connected parts and skeleton parts of the reservoirs. This method has the characteristics of high precision and strong reliability, solves the construction of three-dimensional digital core of carbonate rock, and makes the digital core model the same as the actual rock to the greatest extent.

Description

technical field [0001] The invention relates to the field of data processing of well logging technology, in particular to a method for extracting various components of a digital core for complex carbonate reservoirs. Background technique [0002] Electrical imaging logging data has high vertical resolution and can clearly reflect the characteristics of various reservoirs that the wellbore passes through. By studying the extraction of reservoir components based on imaging logging data and combining with core casting thin section data, the Three-dimensional digital core construction, so that the digital core model is the same as the actual rock to the greatest extent, providing a research basis for accurately predicting the rock physical properties of the reservoir and analyzing the intrinsic relationship between different rock physical responses, carbonate reservoirs The extraction of each component (pore, connected part and skeleton) is the basis of 3D digital core construct...

AI Technical Summary

Problems solved by technology

The accuracy of the obtained results is low, and the digital core model is quite different from the actual rock. Therefore, it is urgent to study a carbonate reservoir with high accuracy and the obtained digital core model is the same as the actual rock to the greatest extent. Extraction method of each component of layer

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