Alteration igneous rock mineral content division method

A technology of mineral content and igneous rocks, applied in the field of rock mineral research, can solve problems such as component division, difficult to synthesize multiple samples, etc.

Pending Publication Date: 2022-07-29
JILIN UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for dividing the mineral content of altered igneous rocks in order to solve the above problems, so as to solve the problem that the current image segmentation method in the prior art is difficult to divide the components of the comprehensive multi-sample characteristics and represent a certain type of lithology samples The problem

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  • Alteration igneous rock mineral content division method
  • Alteration igneous rock mineral content division method
  • Alteration igneous rock mineral content division method

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Embodiment Construction

[0038] Embodiments of the present invention provide a method for dividing mineral content of altered igneous rocks.

[0039] see figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 and Figure 15 ,

[0040] Step 1: Based on the wall core thin section and other data, summarize the lithological categories and mineral compositions in this area, and select four main lithologies in the target well area: altered diorite, altered granite, altered diabase and Altered andesite, there are 5 main mineral components;

[0041] The mineral classification merger scheme is shown in Table 1

[0042] Table 1. Classification and merger scheme of buried hill minerals in Well X

[0043]

[0044] Step 2: Based on the whole rock analysis data, obtain the average mineral content of 4 groups of lithology;

[0045] The average mineral content of different lithological...

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Abstract

The invention provides an alteration igneous rock mineral content division method, and relates to the field of rock mineral research. According to the alteration igneous rock mineral content division method, on the basis of data such as wall center slices, lithology categories and mineral components of a region are summarized, and four types of main lithology of a target well region are preferably selected, namely alteration twinkling, alteration granite, alteration diabase and alteration andesite. The alteration igneous rock mineral content division method has the problem that component division is difficult to carry out on comprehensive multi-sample characteristics and samples representing a certain type of lithofacies. Based on rock physics microscopic numerical simulation, a method for carrying out threshold segmentation in combination with the percentage content of each component and a gray sequence, and based on X-ray CT scanning imaging, comprehensive application of means such as total rock analysis and the like, and combination with different lithologic mineral components and porosity characteristics of Huizhou pits, the lithologic mineral components and the porosity characteristics of Huizhou pits are obtained. And constructing altered igneous rock digital cores with different lithological characters (including altered twinkling, altered granite, altered diabase and altered andesite).

Description

technical field [0001] The invention relates to a method for dividing mineral content, in particular to a method for dividing mineral content of altered igneous rocks, and belongs to the technical field of rock mineral research. Background technique [0002] Altered igneous rock reservoirs have the characteristics of low porosity and low permeability, compact structure, and strong heterogeneity. Three-dimensional digital cores are often used to visually display the spatial distribution of each component and characterize the microstructure. A parsimonious digital core constrained by multiple parameters and representing a certain type of lithology or lithofacies, the method of constructing a digital core model for mineral threshold segmentation has been widely studied. There is no obvious multi-peak feature, so pseudo-color conversion was carried out on the CT slice in the HSI color space. Compared with the grayscale image, the pseudo-color image has obvious color characterist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/136G06T7/11G06T5/00G06T7/90G06F30/20G01N23/046G06F111/10
CPCG06T7/136G06T7/11G06T5/002G06T7/90G06F30/20G01N23/046G06T2207/10116G06T2207/10081G06F2111/10
Inventor 张乃毓潘保芝郭宇航张丽华王欣茹
Owner JILIN UNIV
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