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Rock character judging method and system based on laser-induced breakdown spectroscopy

A technology of laser-induced breakdown and discrimination method, which is applied in the field of geological exploration and can solve problems such as complex matrix

Inactive Publication Date: 2016-09-14
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, due to the many types of rock / debris lithology and complex matrix, the direct analysis of solid samples using LIBS technology is inevitably affected by the matrix effect and spectral self-absorption effect, which is manifested as a nonlinear relationship between LIBS spectrum and sample component content

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  • Rock character judging method and system based on laser-induced breakdown spectroscopy
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  • Rock character judging method and system based on laser-induced breakdown spectroscopy

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Embodiment 1

[0099] Embodiment 1 The method of the present invention

[0100] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, a general description will be given below in conjunction with a general flowchart of a method for lithology identification by laser-induced breakdown spectroscopy provided by the embodiments of the present invention. It should be pointed out that the described embodiments are only a part of the embodiments of the present invention, not all the embodiments.

[0101] figure 1 Shown is a general flow chart of a laser-induced breakdown spectroscopy lithology identification method according to an embodiment of the present invention, as shown in the figure, including the following main processes:

[0102] (1) Process 1001

[0103] Establish a laser-induced breakdown spectrum rock / cuttings element quantitative analysis model based on least squares support vector machine, including data acquisition and ...

Embodiment 2

[0195] Embodiment 2 The system of the present invention

[0196] Figure 7 Shown is a schematic structural diagram of a laser-induced breakdown spectroscopy lithology identification system according to an embodiment of the present invention, which is characterized in that:

[0197] LIBS rock / cutting element quantitative analysis modeling module 701; lithology identification combination information extraction module 702; standard core lithology identification database module 703, lithology identification data matching algorithm module 704; LIBS data collection and testing module 705; lithology Discrimination data calculation execution module 706, lithology identification output module 707;

[0198] The LIBS rock / cutting element quantitative analysis modeling module 701 is used to combine the least squares support vector machine with LIBS laser-induced breakdown spectroscopy technology to establish a rock / cutting LIBS element quantitative analysis model; The identification pro...

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Abstract

The invention discloses a rock character judging method based on laser-induced breakdown spectroscopy (LIBS). According to the method, a laser-induced breakdown spectroscopy (LIBS) technology is used to establish a rock and / or rock debris element information prediction model based on a least square support vector machine; and the rock characters can be judged according to the element information prediction data of a rock and / or rock debris sample to be detected. The method has the characteristics of directness, rapidness, accuracy, and efficiency. The rock character judgment is accurate and efficient, especially for the logging rock debris powder under a high speed drilling condition, and the rock character judgment results are the same with those of drilling and coring. The invention also provides a system for the method mentioned above at the same time.

Description

technical field [0001] The invention relates to the field of geological exploration, in particular to a lithology discrimination method and system based on laser-induced breakdown spectroscopy. Background technique [0002] The current new geological theory of major oil and gas exploration and the advancement of deep drilling technology have provided important conditions for the steady growth of my country's proven oil and gas reserves and the development of oil and gas exploration in the future. Regional and new areas of transfer trends. With the increasingly complex formations encountered and the increase of ultra-deep, high-cost and high-risk exploration targets, the exploration and development of reservoirs has been paid more and more attention. In recent years, as an important means to improve the efficiency and benefits of oil and gas exploration and development, the innovative development and application of drill bit technology has continuously improved the rock break...

Claims

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Application Information

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IPC IPC(8): G01N21/71
CPCG01N21/718
Inventor 段忆翔许涛林庆宇
Owner SICHUAN UNIV
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