Carbonate mineral identification method

A carbonate mineral and identification method technology, applied in the field of rock variety identification, can solve problems such as inaccurate identification of carbonate minerals, achieve the effects of improving identification accuracy, reducing damage probability, and avoiding identification errors

Active Publication Date: 2016-12-07
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a method for identification of carbonate minerals, to solve the problem of inaccurate identification of carbonate minerals in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Taking the 1592.54-meter rock sample of the Pingdiquan Formation (P2p) in Well H2452 of the Zhundong Huoshaoshan Oilfield as a sample, the following steps were used to dye and identify carbonate minerals in the rock thin section. The specific steps include:

[0054] Step 1: First, grind the above-mentioned rock samples until finely ground thin slices according to the polarized thin slice preparation method in the Petroleum and Natural Gas Industry Standard SY / T 5913-2004 of the People's Republic of China. No., W10 emery is mixed with water, and ground to 0.040mm step by step on a grinding machine;

[0055] Step 2: Then, under the crossed polarizing microscope, it is identified that the rock sample with a thin slice thickness of 0.040 mm and an interference color of high-grade white is a mud microcrystalline carbonate mineral;

[0056] Step 3: Then prepare the mixed solution rock coloring agent according to the dyeing agent preparation method in the identification of the...

Embodiment 2

[0063] Taking the 1690.72-meter rock sample of the Pingdiquan Formation (P2p) in Well H262 of the Zhundong Huoshaoshan Oilfield as a sample, the following steps were used to dye and identify carbonate minerals in the rock thin section. The specific steps include:

[0064]Step 1: First, grind the above-mentioned rock samples until finely ground thin slices according to the polarized thin slice preparation method in the Petroleum and Natural Gas Industry Standard SY / T 5913-2004 of the People's Republic of China. No., W10 emery is mixed with water, and ground to 0.038mm step by step on a grinding machine;

[0065] Step 2: Then, under the crossed polarizing microscope, it was identified that the rock sample with a thin slice thickness of 0.038mm and an interference color of high-grade white was a mud microcrystalline carbonate mineral;

[0066] Step 3: Then prepare the mixed solution rock coloring agent according to the dyeing agent preparation method in the identification of rock...

Embodiment 3

[0072] Taking the 1480.51-meter rock sample of the Pingdiquan Formation (P2l) in Well Ji 174 in the Jimusar Sag of Zhundong as a sample, the carbonate minerals in the rock thin section were dyed and identified by the following steps. The specific steps include:

[0073] Step 1: First, grind the above-mentioned rock samples until finely ground thin slices according to the polarized thin slice preparation method in the Petroleum and Natural Gas Industry Standard SY / T 5913-2004 of the People's Republic of China. No., W10 emery is mixed with water, and ground to 0.042mm step by step on a grinding machine;

[0074] Step 2: Then, under the crossed polarizing microscope, it is identified that the rock sample with a thin slice thickness of 0.042mm and an interference color of high-grade white is a mud microcrystalline carbonate mineral;

[0075] Step 3: Then prepare the mixed solution rock coloring agent according to the dyeing agent preparation method in the identification of rock th...

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Abstract

The present invention discloses a carbonate mineral identification method, which comprises: S1, acquiring the rock flake of a carbonate mineral to be identified; S2, carrying out partial staining on one surface of the rock flake to obtain a partially-stained rock flake; and S3, placing the rock flake under a single polarizing microscope and carrying out staining reaction observation within 15 s after the staining, and judging the rock type of the carbonate mineral according to the staining reaction observation result, wherein the one rock flake surface being subjected to the partial staining is named the stained surface, the area of the whole stained surface is recorded as S, and the area of the stained part is recorded as SA. According to the present invention, the partial staining is creatively performed, and the stained flake is placed under the single polarizing microscope and is subjected to the real-time staining reaction observation within 15 s after the staining, such that the identification accuracy is increased, the non-stained part can be re-identified, and the damage rate of the rock flake can be reduced.

Description

technical field [0001] The invention relates to the field of identification of rock varieties, in particular to an identification method of carbonate minerals. Background technique [0002] At present, the method commonly used in the rapid identification of minerals in China is the rock thin section dyeing method, and the specific steps are carried out in accordance with the method of making polarized thin slices in the Petroleum and Natural Gas Industry Standard SY / T 5913-2004 of the People's Republic of China. The slices were made, and then identified according to the dyeing method of the Petroleum and Natural Gas Industry Standard SY / T 5368-2000 of the People's Republic of China for the identification of rock thin sections. [0003] In this rapid identification method in the prior art, the dyeing method is characterized in that, according to the preparation method of the dyeing agent in the identification of rock thin sections of the Petroleum and Natural Gas Industry Sta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/84G01N1/30
Inventor 张丽霞陈春勇韩晓程向辉刘娟丽王菁孙王辉
Owner PETROCHINA CO LTD
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