Manufacturing method of carbonate rock slice for automatic scanning imaging

Abstract

The invention provides a manufacturing method of a carbonate rock slice for automatic scanning imaging, which comprises the following steps: (1) determining the manufacturing size of the carbonate rock slice according to the specification of a mounting rack of a rock slice scanning system; (2) grinding a blue casting body sheet according to the manufacturing size; (3) preparing a staining solution, uniformly smearing the staining solution on the surface of one side, with the rock sample, of the blue casting body sheet, horizontally standing, rinsing and air-drying to obtain a stained sheet; and (4) placing the dyed sheet in a mounting rack with the surface with the rock sample facing upwards, and carrying out automatic scanning imaging by using single polarized light and / or orthogonal light to obtain a sheet image. According to the method provided by the invention, the slice specification required by full-automatic slice scanning is defined, the slice is prepared, and the prepared slice is utilized to obtain a high-quality multi-optical slice image in a full-automatic slice scanning system, so that services are provided for establishment of a slice image database and later intelligent slice identification, and high-efficiency oil-gas exploration can be conveniently guided.

Description

Technical Field

[0001] The invention belongs to the technical field of geological exploration, and relates to a method for making a rock slice, in particular to a method for making a carbonate rock slice for automatic scanning and imaging. Background Art

[0002] Rock thin section identification is one of the most basic tasks in geological research. Geological exploration requires a large number of thin sections. Traditional thin section production methods are all aimed at petrology, geochemical analysis, etc. Thin section identification personnel manually take photos under a microscope, which is time-consuming and labor-intensive, and the effect is not good.

[0003] In the context of big data, the establishment of thin section image databases and thin section intelligent identification are the development trends of traditional petrology research. If thin section intelligent identification is to be achieved, a unified method is needed for the production of thin sections in order to obtain sufficient information for subsequent intelligent identification.

[0004] CN 115656166A discloses a multi-dimensional rock slice digital automatic acquisition system, including a computer, a database, an image processing module, a microscope module and an acquisition module; the computer is connected to the image processor, the database, the microscope module and the acquisition module; the acquisition module can realize the switching between single polarization detection and orthogonal polarization detection and realize the detection of orthogonal polarization at different angles; the imaging module takes a high-definition polarization microscopic image of the rock slice and sends it to the computer; the image processing module automatically splices the high-definition polarization microscopic image. However, the invention does not mention how to make rock slices, and there is still much room for improvement.

[0005] It can be seen that how to provide a method for making rock thin sections, especially suitable for the production of carbonate rock thin sections with automatic scanning imaging, to establish a thin section image database and subsequent intelligent thin section identification services, and then guide efficient oil and gas exploration, has become an urgent problem that technical personnel in this field need to solve. Summary of the invention

[0006] The object of the present invention is to provide a method for making carbonate rock slices for automatic scanning and imaging, the method clarifies the slice specifications required for fully automatic slice scanning and performs slice making, and uses the prepared slices to obtain high-quality multi-optical slice images in a fully automatic slice scanning system, so as to establish a slice image database and subsequent intelligent slice identification services, thereby facilitating the guidance of efficient oil and gas exploration.

[0007] In order to achieve the purpose of the invention, the present invention adopts the following technical solutions:

[0008] The present invention provides a method for preparing a carbonate rock slice for automatic scanning imaging, the method comprising the following steps:

[0009] (1) Determine the size of the carbonate rock thin section according to the mounting frame specifications of the rock thin section scanning system;

[0010] (2) grinding a blue cast sheet according to the size described in step (1);

[0011] (3) preparing a dyeing solution, and evenly applying the dyeing solution to the surface of one side of the blue cast thin slice with the rock sample in step (2), leaving it horizontally still, rinsing it, and air-drying it to obtain a dyed slice;

[0012] (4) The stained sheet described in step (3) is placed in a mounting frame with the side with the rock sample facing upward, and is automatically scanned and imaged using single polarized light and / or orthogonal light to obtain a thin section image.

[0013] The method provided by the present invention clarifies the thin slice specifications required for fully automatic thin slice scanning and prepares the thin slices, and uses the prepared thin slices to obtain high-quality multi-light thin slice images in the fully automatic thin slice scanning system, so as to establish a thin slice image database and later intelligent thin slice identification services, thereby facilitating the guidance of efficient oil and gas exploration.

[0014] Preferably, the rock thin section scanning system in step (1) comprises a fully automatic thin section scanning system Axio Scan7.

[0015] Preferably, the production dimensions of the carbonate rock slices in step (1) include three production dimensions, namely: a first size, a second size and a third size.

[0016] Preferably, the length of the sheet of the first size is 73.5-76.5 mm, for example, it can be 73.5 mm, 74 mm, 74.5 mm, 75 mm, 75.5 mm, 76 mm or 76.5 mm, but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0017] Preferably, the width of the sheet of the first size is 24-26.25mm, for example, it can be 24mm, 24.25mm, 24.5mm, 24.75mm, 25mm, 25.25mm, 25.5mm, 25.75mm, 26mm or 26.25mm, but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0018] Preferably, the thickness of the slide glass of the first size is 0.8-1.3 mm, for example, it can be 0.8 mm, 0.85 mm, 0.9 mm, 0.95 mm, 1 mm, 1.05 mm, 1.1 mm, 1.15 mm, 1.2 mm, 1.25 mm or 1.3 mm, but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0019] Preferably, the length of the sheet of the second size is 73.5-76.5 mm, for example, it can be 73.5 mm, 74 mm, 74.5 mm, 75 mm, 75.5 mm, 76 mm or 76.5 mm, but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0020] Preferably, the width of the second size sheet is 50-52 mm, for example, it can be 50 mm, 50.2 mm, 50.4 mm, 50.6 mm, 50.8 mm, 51 mm, 51.2 mm, 51.4 mm, 51.6 mm, 51.8 mm or 52 mm, but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0021] Preferably, the thickness of the slide glass of the second size is 0.8-1.3 mm, for example, it can be 0.8 mm, 0.85 mm, 0.9 mm, 0.95 mm, 1 mm, 1.05 mm, 1.1 mm, 1.15 mm, 1.2 mm, 1.25 mm or 1.3 mm, but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0022] Preferably, the length of the thin film of the third size is 44-46 mm, for example, it can be 44 mm, 44.2 mm, 44.4 mm, 44.6 mm, 44.8 mm, 45 mm, 45.2 mm, 45.4 mm, 45.6 mm, 45.8 mm or 46 mm, but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0023] Preferably, the width of the thin film of the third size is 29-31 mm, for example, it can be 29 mm, 29.2 mm, 29.4 mm, 29.6 mm, 29.8 mm, 30 mm, 30.2 mm, 30.4 mm, 30.6 mm, 30.8 mm or 31 mm, but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0024] Preferably, the thickness of the slide glass of the third size is 0.8-1.3 mm, for example, it can be 0.8 mm, 0.85 mm, 0.9 mm, 0.95 mm, 1 mm, 1.05 mm, 1.1 mm, 1.15 mm, 1.2 mm, 1.25 mm or 1.3 mm, but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0025] In the present invention, the thickness of the blue cast sheet in step (2) is 0.03 mm.

[0026] Preferably, the blue cast thin slice in step (2) is further single-sided polished after grinding and is not covered with a cover glass.

[0027] Preferably, the solute in the staining solution in step (3) includes Alizarin Red S and potassium ferrocyanide.

[0028] In the present invention, the preparation method of the dyeing solution is specifically as follows: 1g of Alizarin Red S is dissolved in 1000ml of 0.2% dilute hydrochloric acid (volume fraction) solution to prepare Alizarin Red S solution, which is mixed with potassium ferrocyanide powder, and the mixing ratio of the Alizarin Red S solution and the potassium ferrocyanide powder is: 0.125g of potassium ferrocyanide powder is added to every 2.5ml of Alizarin Red S solution and shaken to fully dissolve it.

[0029] Preferably, the horizontal standing time in step (3) is 45-60s, for example, it can be 45s, 46s, 48s, 50s, 52s, 54s, 56s, 58s or 60s, but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0030] Preferably, the rinsing in step (3) is carried out using deionized water.

[0031] Preferably, the angle of the orthogonal light in step (4) is 30°-60°, for example, it can be 30°, 35°, 40°, 45°, 50°, 55° or 60°, but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0032] As a preferred technical solution of the present invention, the production method comprises the following steps:

[0033] (1) According to the specifications of the mounting frame of the fully automatic thin-section scanning system Axio Scan 7, three sizes of carbonate thin sections are determined, namely: the first size, the second size and the third size; wherein the length of the thin section of the first size is 73.5-76.5 mm, the width of the thin section is 24-26.25 mm, and the thickness of the slide is 0.8-1.3 mm; the length of the thin section of the second size is 73.5-76.5 mm, the width of the thin section is 50-52 mm, and the thickness of the slide is 0.8-1.3 mm; the length of the thin section of the third size is 44-46 mm, the width of the thin section is 29-31 mm, and the thickness of the slide is 0.8-1.3 mm;

[0034] (2) grinding a blue cast thin slice with a thickness of 0.03 mm according to the size described in step (1), polishing it on one side, and not covering it with a cover glass;

[0035] (3) preparing a mixture of Alizarin Red S and potassium ferrocyanide as a staining solution, and evenly applying the staining solution to the surface of one side of the blue cast thin slice with the rock sample in step (2), leaving it horizontally for 45-60 seconds, then rinsing it with deionized water and air-drying it to obtain a staining slice;

[0036] (4) The stained sheet described in step (3) is placed in a mounting frame with the side with the rock sample facing upward, and is automatically scanned and imaged using single polarized light and / or orthogonal light of 30°-60° to obtain a thin section image.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] The method provided by the present invention clarifies the thin slice specifications required for fully automatic thin slice scanning and prepares the thin slices, and uses the prepared thin slices to obtain high-quality multi-light thin slice images in the fully automatic thin slice scanning system, so as to establish a thin slice image database and later intelligent thin slice identification services, thereby facilitating the guidance of efficient oil and gas exploration. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a thin slice image obtained by the preparation method provided in Example 1;

[0040] Figure 2 This is a partially enlarged photograph of the thin film image obtained by the production method provided in Example 1. DETAILED DESCRIPTION

[0041] The technical solution of the present invention is further described below by specific implementation methods. It should be understood by those skilled in the art that the embodiments are only to help understand the present invention and should not be regarded as specific limitations of the present invention.

[0042] Example 1

[0043] This embodiment provides a method for making a carbonate rock slice for automatic scanning imaging, the method comprising the following steps:

[0044] (1) According to the specifications of the mounting frame of the fully automatic thin-section scanning system Axio Scan 7, the dimensions of the carbonate thin sections were determined: the length of the thin section was 73.5-76.5 mm, the width of the thin section was 24-26.25 mm, and the thickness of the slide was 0.8-1.3 mm;

[0045] (2) grinding a blue cast thin slice with a thickness of 0.03 mm according to the size described in step (1), polishing it on one side, and not covering it with a cover glass;

[0046] (3) preparing a mixed solution of Alizarin Red S and potassium ferrocyanide as a staining solution, and evenly applying the staining solution to the surface of one side of the blue cast thin slice with the rock sample in step (2), leaving it horizontally for 45 seconds, rinsing it with deionized water and air-drying it to obtain a stained slice; wherein the preparation method of the staining solution is specifically as follows: dissolving 1g of Alizarin Red S in 1000ml of 0.2% dilute hydrochloric acid (volume fraction) solution to prepare Alizarin Red S solution, mixing it with potassium ferrocyanide powder, and the mixing ratio of Alizarin Red S solution and potassium ferrocyanide powder is: adding 0.125g of potassium ferrocyanide powder to every 2.5ml of Alizarin Red S solution and shaking it well to fully dissolve it;

[0047] (4) Place the staining sheet described in step (3) in a mounting frame with the rock sample side facing upward, and perform automatic scanning imaging using single polarized light to obtain the following: Figure 1 Thin slice image shown.

[0048] Figure 2 This is a partially enlarged photograph of the thin film image obtained in this example.

[0049] exist Figure 2 Among them, those dyed red are calcite, those dyed lavender are ferrocalcite, those not dyed are dolomite, and those dyed light blue are iron dolomite.

[0050] This embodiment clarifies the sheet specifications required for fully automatic sheet scanning and produces the sheets, and uses the produced sheets to obtain high-quality multi-optical sheet images in the fully automatic sheet scanning system, so as to establish a sheet image database and subsequent intelligent sheet identification services, thereby facilitating the guidance of efficient oil and gas exploration.

[0051] Example 2

[0052] This embodiment provides a method for making a carbonate rock slice for automatic scanning imaging, the method comprising the following steps:

[0053] (1) According to the specifications of the mounting frame of the fully automatic thin-section scanning system Axio Scan 7, the dimensions of the carbonate thin sections were determined: the length of the thin section was 73.5-76.5 mm, the width of the thin section was 50-52 mm, and the thickness of the slide was 0.8-1.3 mm;

[0054] (2) grinding a blue cast thin slice with a thickness of 0.03 mm according to the size described in step (1), polishing it on one side, and not covering it with a cover glass;

[0055] (3) preparing a mixed solution of Alizarin Red S and potassium ferrocyanide as a staining solution, and evenly applying the staining solution to the surface of one side of the blue cast thin slice with the rock sample in step (2), leaving it horizontally still for 50 seconds, rinsing it with deionized water and air-drying it to obtain a stained slice; wherein the preparation method of the staining solution is specifically as follows: dissolving 1g of Alizarin Red S in 1000ml of 0.2% dilute hydrochloric acid (volume fraction) solution to prepare Alizarin Red S solution, mixing the solution with potassium ferrocyanide powder, and the mixing ratio of Alizarin Red S solution to potassium ferrocyanide powder is: adding 0.125g of potassium ferrocyanide powder to every 2.5ml of Alizarin Red S solution and shaking it well to fully dissolve it;

[0056] (4) Place the stained film described in step (3) in a mounting frame with the rock sample side facing upward, and use orthogonal light to rotate the polarizer 30° for automatic scanning imaging to obtain a thin film image.

[0057] The thin film image obtained in this embodiment is similar to that in Embodiment 1, so it will not be described here in detail.

[0058] Example 3

[0059] This embodiment provides a method for making a carbonate rock slice for automatic scanning imaging, the method comprising the following steps:

[0060] (1) According to the specifications of the mounting frame of the fully automatic thin-section scanning system Axio Scan 7, the dimensions of the carbonate thin sections were determined: the length of the thin section was 44-46 mm, the width of the thin section was 29-31 mm, and the thickness of the slide was 0.8-1.3 mm;

[0061] (2) grinding a blue cast thin slice with a thickness of 0.03 mm according to the size described in step (1), polishing it on one side, and not covering it with a cover glass;

[0062] (3) preparing a mixed solution of Alizarin Red S and potassium ferrocyanide as a staining solution, and evenly applying the staining solution to the surface of one side of the blue cast thin slice with the rock sample in step (2), leaving it horizontally still for 60 seconds, rinsing it with deionized water and air-drying it to obtain a stained slice; wherein the preparation method of the staining solution is specifically as follows: dissolving 1g of Alizarin Red S in 1000ml of 0.2% dilute hydrochloric acid (volume fraction) solution to prepare Alizarin Red S solution, mixing the solution with potassium ferrocyanide powder, and the mixing ratio of Alizarin Red S solution to potassium ferrocyanide powder is: adding 0.125g of potassium ferrocyanide powder to every 2.5ml of Alizarin Red S solution and shaking it well to fully dissolve it;

[0063] (4) The stained film described in step (3) is placed in a mounting frame with the side with the rock sample facing upward, and the polarizer is rotated 60° using single polarized light and orthogonal light to perform automatic scanning imaging to obtain a thin film image.

[0064] The thin film image obtained in this embodiment is similar to that in Embodiment 1, so it will not be described here in detail.

[0065] It can be seen that the method provided by the present invention clarifies the thin slice specifications required for fully automatic thin slice scanning and prepares the thin slices, and uses the prepared thin slices to obtain high-quality multi-optical thin slice images in the fully automatic thin slice scanning system, so as to establish a thin slice image database and subsequent intelligent thin slice identification services, thereby facilitating the guidance of efficient oil and gas exploration.

[0066] The applicant declares that the above is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention shall fall within the protection scope and disclosure scope of the present invention.

Claims

1. A method for preparing a carbonate rock slice for automatic scanning imaging, characterized in that: The production method comprises the following steps: (1) Determine the size of the carbonate rock thin section according to the mounting frame specifications of the rock thin section scanning system; (2) grinding a blue cast sheet according to the size described in step (1); (3) preparing a dyeing solution, and evenly applying the dyeing solution to the surface of one side of the blue cast thin slice with the rock sample in step (2), leaving it horizontally still, rinsing it, and air-drying it to obtain a dyed slice; (4) The stained sheet described in step (3) is placed in a mounting frame with the side with the rock sample facing upward, and is automatically scanned and imaged using single polarized light and / or orthogonal light to obtain a thin section image.

2. The method according to claim 1, characterized in that: The rock thin section scanning system in step (1) comprises the fully automatic thin section scanning system Axio Scan 7.

3. The production method according to claim 1 or 2, characterized in that: The production dimensions of the carbonate rock slices in step (1) include three production dimensions, namely: a first dimension, a second dimension and a third dimension.

4. The method according to claim 3, characterized in that: The length of the sheet of the first size is 73.5-76.5 mm; Preferably, the width of the sheet of the first size is 24-26.25 mm; Preferably, the thickness of the slide glass of the first size is 0.8-1.3 mm.

5. The manufacturing method according to claim 3, characterized in that: The length of the second size sheet is 73.5-76.5 mm; Preferably, the width of the sheet of the second size is 50-52 mm; Preferably, the thickness of the slide glass of the second size is 0.8-1.3 mm.

6. The method according to claim 3, characterized in that: The length of the sheet of the third size is 44-46 mm; Preferably, the width of the sheet of the third size is 29-31 mm; Preferably, the thickness of the slide glass of the third size is 0.8-1.3 mm.

7. The production method according to any one of claims 1 to 6, characterized in that: The blue cast thin slice in step (2) is further single-sided polished after grinding and is not covered with a cover glass.

8. The production method according to any one of claims 1 to 7, characterized in that: The solute in the staining solution of step (3) includes Alizarin Red S and potassium ferrocyanide; Preferably, the horizontal standing time in step (3) is 45-60s; Preferably, the rinsing in step (3) is performed using deionized water.

9. The production method according to any one of claims 1 to 8, characterized in that: The angle of the orthogonal light in step (4) is 30°-60°.

10. The production method according to any one of claims 1 to 9, characterized in that: The production method comprises the following steps: (1) According to the specifications of the mounting frame of the fully automatic thin-section scanning system Axio Scan 7, three sizes of carbonate thin sections are determined, namely: the first size, the second size and the third size; wherein the length of the thin section of the first size is 73.5-76.5 mm, the width of the thin section is 24-26.25 mm, and the thickness of the slide is 0.8-1.3 mm; the length of the thin section of the second size is 73.5-76.5 mm, the width of the thin section is 50-52 mm, and the thickness of the slide is 0.8-1.3 mm; the length of the thin section of the third size is 44-46 mm, the width of the thin section is 29-31 mm, and the thickness of the slide is 0.8-1.3 mm; (2) grinding a blue cast thin slice with a thickness of 0.03 mm according to the size described in step (1), polishing it on one side, and not covering it with a cover glass; (3) preparing a mixture of Alizarin Red S and potassium ferrocyanide as a staining solution, and evenly applying the staining solution to the surface of one side of the blue cast thin slice with the rock sample in step (2), leaving it horizontally for 45-60 seconds, then rinsing it with deionized water and air-drying it to obtain a staining slice; (4) Place the stained sheet in step (3) in a mounting frame with the rock sample facing upward, and perform automatic scanning imaging using single polarized light and / or 30°-60° orthogonal light to obtain a thin section image.

Images