ASD spectrum-based carbonate rock lithology identification method and device

A carbonate rock and lithology identification technology, which is applied in measuring devices, character and pattern recognition, and material analysis through optical means, can solve the problems that the accuracy rate is greatly affected by subjective factors and low efficiency, and achieve improvement Recognition accuracy and the effect of improving work efficiency

Pending Publication Date: 2021-01-19
PETROCHINA CO LTD
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Problems solved by technology

However, this method is not only inefficient, but also the accuracy is greatly affected by subjective factors. Ev

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  • ASD spectrum-based carbonate rock lithology identification method and device
  • ASD spectrum-based carbonate rock lithology identification method and device
  • ASD spectrum-based carbonate rock lithology identification method and device

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[0069] In order to have a clearer understanding of the technical features, purposes and beneficial effects of the present invention, the technical solution of the present invention will be described in detail below in conjunction with the following specific examples, but it should not be construed as limiting the scope of the present invention.

[0070] figure 1 It is a process flow chart of the carbonate rock lithology identification method based on ASD spectrum in the embodiment of the present invention, as figure 1 As shown, the method includes the following steps:

[0071] Step S1, using the ASD spectrometer to obtain the spectral data of the carbonate rock sample;

[0072] Step S2, preprocessing the spectral data;

[0073] Step S3, extracting local waveform eigenvalues ​​in the spectral data;

[0074] Step S4, establishing a carbonate rock lithology identification model according to the local waveform eigenvalues ​​in the spectral data;

[0075] Step S5, using the car...

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Abstract

The invention provides an ASD spectrum-based carbonate rock lithology identification method and device, and the method comprises the steps: 1, obtaining the spectral data of a carbonate rock sample through an ASD spectrometer; 2, preprocessing the spectral data; 3, extracting a local waveform characteristic value in the spectral data; 4, establishing a carbonate rock lithology identification modelaccording to the local waveform characteristic value in the spectral data; and 5, identifying limestone and cloud rock by using the carbonate rock lithology identification model. According to the method provided by the invention, limestone and dolomite can be effectively distinguished, and compared with a traditional manual identification mode, the method provided by the invention greatly improves the working efficiency and the identification precision, can provide a basis for regional geological exploration, and further has a relatively good application prospect in oil and gas exploration and development and geological application.

Description

technical field [0001] The invention relates to a carbonate rock lithology identification method and device based on ASD spectrum, and belongs to the technical field of application of remote sensing spectroscopy in oil and gas geology. Background technique [0002] Carbonate rocks are closely related to resources and environment. Carbonate rocks are not only important oil and gas reservoir rocks, but also important source rocks. The identification of carbonate rocks is of great significance to oil and gas geology and oil and gas exploration and development. The traditional identification of carbonate rock lithology is mainly done by experienced geologists to distinguish limestone and dolomite by observing samples indoors or observing the color, texture, structure and other characteristics of rocks in the field. In some cases, chemical Reagents are identified. However, this method is not only inefficient, but also the accuracy is greatly affected by subjective factors. Eve...

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Application Information

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IPC IPC(8): G01N21/3563G01N21/359G06K9/00
CPCG01N21/3563G01N21/359G06F2218/08G06F2218/12
Inventor 曾齐红魏薇张友焱邵燕林于世勇王文志叶勇胡艳马志国
Owner PETROCHINA CO LTD
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