A Vectorization Method for Reservoir Geological Profile

A geological profile and vectorization technology is applied in the field of reservoir geological profile vectorization and adaptive Canny edge detection in the field of reservoir geological profile vectorization, which can solve problems such as loss of contour information and inability to meet stratigraphic profile vectorization.

Inactive Publication Date: 2020-06-30
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

This method can quickly analyze the drawing and complete the conversion process of the entire vector drawing, but the contour information of the image with a lot of noise is lost.
The above methods have been applied in practical problem solving, and some vectorization software has adopted some of the algorithms, but for the vectorization of stratigraphic profile, these algorithms still have shortcomings and cannot meet the requirements of vectorization of stratigraphic profile

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  • A Vectorization Method for Reservoir Geological Profile
  • A Vectorization Method for Reservoir Geological Profile
  • A Vectorization Method for Reservoir Geological Profile

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Embodiment Construction

[0032] Attached below Figure 1-5 , Using MATLAB software to further describe the present invention: a vectorization method that uses an improved adaptive Canny edge detection algorithm to vectorize a reservoir geological profile. The specific implementation plan includes the following steps. figure 1 Shown:

[0033] (1) Bitmap image input. Read in MATLAB figure 2 As the initial input;

[0034] (2) Image preprocessing. Input geological profile of the reservoir figure 2 In addition to the line segments representing the stratum boundary, there are a large number of lithology symbols filled between the stratum boundaries, and these lithology symbols have various shapes (such as filled areas, short lines, circles, solid circles, small triangles, etc.) and contain some noise. Correct figure 2 For preprocessing, firstly, Gaussian filtering is used to smooth the image, and then Laplacian sharpening method is used to enhance the image on the basis of smoothing. Image preprocessing ca...

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Abstract

The present invention discloses a new method for vectorizing oil reservoir geological profiles, which is characterized in that it includes the following steps: Step S1: taking the oil reservoir geological profiles as input; Step S2: using Gaussian filtering to smooth and filter the image, and then On the basis of smoothness, the Laplacian sharpening method is used to enhance the image; Step S3: first perform color space model conversion, and then perform color clustering and segmentation; Step S4: use the improved adaptive Canny edge detection algorithm to perform edge detection on the image , to obtain the edge contour; step S5: vectorize the obtained contour; step S6: output the vector diagram: output the vector diagram in SVG format. The reservoir geologic cross-section diagram vectorized by the invention better retains the horizon information of each layer, and the obtained vector diagram is easy to edit and save, and has been well practically applied in comprehensive geological interpretation while drilling.

Description

Technical field [0001] The present invention relates to a vectorization method of reservoir geological profile map, which belongs to the technical field of computer-aided design, and specifically is a multi-level edge based on improved adaptive Canny (Canny, John F. Canny developed in 1986) Detection algorithm) The vectorization method of reservoir geological profile map based on edge detection. Background technique [0002] A geological section map is a map showing geological phenomena within a certain distance and a certain depth underground with prescribed symbols, patterns and colors in a certain proportion and along a certain direction. Generally, the stratigraphic structure and rock mass attribute characteristics such as strata stratification, faults, lithology, etc. should be shown. It vividly and intuitively expresses the structural structure of the stratum and the deposition law of the stratum, and is the most intuitive and effective way to express the stratum in the ve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06K9/62G06T7/13G06T7/136
CPCG06T7/13G06T7/136G06T2207/30184G06T2207/10024G06F30/00G06F18/23213
Inventor 孙歧峰段友祥李洪强李宁宁
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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