Clastic rock mineral composition recognition method, lithology naming method and related devices
A technology of mineral composition and identification method, which is applied in the fields of information technology and reservoir evaluation, can solve the problems of high impact on identification results, time-consuming identification of mineral composition, and inability to achieve accurate quantification, so as to avoid dependence on professional technicians and realize specific Quantification, fast and efficient automatic recognition effect
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Embodiment 1
[0049] Embodiment 1 of the present invention provides a method for identifying mineral components of clastic rocks, the process of which is as follows figure 1 shown, including the following steps:
[0050] Step S11: using the instance segmentation model to segment and extract the image units corresponding to the mineral particles from the multiple images of the thin slice with different light sources.
[0051] Generally, it is necessary to combine the characteristic morphology under single polarized light and crossed polarized light at multiple angles to accurately identify mineral particles. A plurality of different light source images of the above-mentioned flakes, which may include the following images of the flakes:
[0052] Single polarized images, crossed polarized images at angles of 0°, 15°, 30°, 45°, 60° and 75°.
[0053] The angle selection of the above-mentioned crossed polarization is obtained through the analysis of a large number of experimental data, which ca...
Embodiment 2
[0073] Embodiment 2 of the present invention provides a clastic rock lithology naming method, including identifying the type of mineral grains in the thin section through the above-mentioned clastic rock mineral composition identification method; naming according to the setting according to the total area of each type of mineral grains Rules determine the lithological designation of thin sections. refer to Figure 5 As shown, its specific implementation process includes the following steps:
[0074] Step S51: Identify the type of mineral grains in the flakes.
[0075] For the specific identification process, refer to the description in Embodiment 1, which will not be repeated here.
[0076] Step S52: Determine the equivalent diameter of the mineral particles.
[0077] In the identification process of mineral particle type, the image unit corresponding to the mineral particle has been segmented and extracted from multiple different light source images of the thin slice, th...
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