CN117686251A - Method for producing slices of continental phase shale oil reservoir rock - Google Patents
Method for producing slices of continental phase shale oil reservoir rock Download PDFInfo
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- CN117686251A CN117686251A CN202211106778.1A CN202211106778A CN117686251A CN 117686251 A CN117686251 A CN 117686251A CN 202211106778 A CN202211106778 A CN 202211106778A CN 117686251 A CN117686251 A CN 117686251A
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- Prior art keywords
- sheet
- grinding
- polishing
- oil reservoir
- shale oil
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- 239000011435 rock Substances 0.000 title claims abstract description 53
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 239000003079 shale oil Substances 0.000 title claims abstract description 19
- 238000000227 grinding Methods 0.000 claims abstract description 45
- 238000000034 method Methods 0.000 claims abstract description 41
- 238000005498 polishing Methods 0.000 claims abstract description 20
- 239000000110 cooling liquid Substances 0.000 claims abstract description 11
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 11
- 238000005520 cutting process Methods 0.000 claims abstract description 10
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 10
- 239000010432 diamond Substances 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 239000003960 organic solvent Substances 0.000 claims abstract description 7
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- 239000000428 dust Substances 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 8
- 210000002268 wool Anatomy 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 5
- 238000005070 sampling Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 230000002087 whitening effect Effects 0.000 abstract description 6
- 238000005336 cracking Methods 0.000 abstract description 5
- 238000007517 polishing process Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000003292 glue Substances 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 238000011160 research Methods 0.000 description 3
- 239000002734 clay mineral Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 241000519995 Stachys sylvatica Species 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009837 dry grinding Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention mainly relates to a manufacturing method of rock slices, in particular to a slice manufacturing method of a land shale oil reservoir rock slice. According to the method, on the basis of the rock tabletting method standard (SY/T5913-2004), all cutting operations performed on a slicing machine are performed without adding cooling liquid for dry cutting treatment; in the steps of grinding a plane and grinding the plate, silicon carbide and an organic solvent are mixed to be used as grinding agents; in the polishing step involved in the production of the inclusion sheet and the cathodoluminescent sheet, the polishing is performed with an electric grinder and a diamond paste without using a polishing liquid. The method does not involve a water grinding and polishing process in the whole process of tabletting, and the prepared sheet has no whitening phenomenon, so that the problem that the tablet fails due to the fact that the sheet is easily whitened caused by rock sample cracking and excessive contact of water and a cementing layer is solved.
Description
Technical Field
The invention mainly relates to a manufacturing method of rock slices, in particular to a slice manufacturing method of a land shale oil reservoir rock slice.
Background
Shale oil gas has become the most important energy resource successor in China, and research on land shale oil reservoirs in China is becoming a hot spot for current research. Rock slice observation is a necessary and common research approach in the hydrocarbon geology field. The existing rock tabletting method is generally basically according to the oil and gas industry standard (SY/T5913-2004) of the people's republic of China, or is slightly improved on the basis of the standard. For example, fir glue used as glue for sticking sheets is not good in fixing effect in the grinding process, so that rock samples are easy to fall off, the solidified glue layer is fragile and easy to crack, the requirement of long-term preservation of the thin sheet cannot be met, and the fir glue is basically eliminated in actual operation.
Unlike marine shale, the land shale represented by the depression of yang and the ancient system shale has the characteristics of short diagenetic time, relatively low siliceous content, relatively high carbonate and clay mineral content and the like. These characteristics result in the fact that conventional methods tend to be unsuccessful in tableting.
Clay minerals in the shale are easy to absorb water and expand, and dehydration occurs to a certain extent in the airing process, so that rock samples are extremely easy to crack; in shale developed in layers and pages, the layers and the pages are also easy to crack as mechanical weak surfaces; dissolution of the water-soluble minerals contained therein (e.g., salts, etc.) also renders the shale loose and brittle; which may occur throughout the tabletting process.
The water in the cooling liquid, grinding liquid, polishing liquid and residual liquid used in the conventional tabletting process can enter from the cracking part of the rock sample and contact with the 502 adhesive layer used for sticking the tablet, so that whitening phenomenon is caused. Whitening makes the contact part of the bonding layer and water whiten, and white strips appear along cracks in common cases, so that white spots are enlarged, and even the contact surface of the whole rock slice and the bonding layer becomes white, so that the light transmission effect and the bonding effect are seriously affected. The "false-seam false-hole" caused by the rock sample cracking also seriously affects the accurate evaluation of the shale oil reservoir space.
The saturated solution of NaCl recommended in the rock tabletting method standard (SY/T5913-2004) does not achieve the desired effect because it does not avoid this problem fundamentally and the variation in the saturation of NaCl is difficult to handle during actual operation. The surface of the slice manufactured by dry cutting and dry grinding without using liquid is rough, and the quality requirement of rock slice production is difficult to be achieved. Thus, there is a need for an effective new treatment process for shale flake production that is completely different from the current conventional process.
Disclosure of Invention
The invention mainly aims to provide a method for preparing a slice of a land shale oil reservoir rock. The method does not involve a water polishing process in the whole process of tabletting, and solves the problem that the slice is easy to fail to be produced due to the cracking of the rock sample and the excessive contact of water and a cementing layer; the original information of the rock sample is reserved, and meanwhile, the success rate of the production is greatly improved.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the invention provides a method for preparing a slice of a land shale oil reservoir rock, which is based on the rock preparation method standard (SY/T5913-2004), and does not add cooling liquid for dry cutting treatment during slicing in the sampling step; the method comprises the steps of carrying out a first treatment on the surface of the In the steps of grinding a plane and grinding the plate, silicon carbide and an organic solvent are mixed to be used as grinding agents; in the polishing step involved in the production of the inclusion sheet and the cathodoluminescent sheet, the polishing is performed with an electric grinder and a diamond paste without using a polishing liquid.
Further, in the dry cutting process, wind suction cooling dust removal process is performed.
Further, the mass-volume ratio of the carborundum to the organic solvent is 1-5:2-15g/mL.
Still further, the organic solvent is ethanol.
Further, a slicing treatment step is added between the sticking and lapping steps, the rock sample stuck on the glass slide is cut to be less than or equal to 0.5mm in thickness on a slicing machine, cooling liquid is not added during cutting, and the cooling and dust removing treatment is carried out by suction.
Further, in the process of producing inclusion sheets, when plane polishing is carried out, a surface of a rock sample, on which a plane is ground, is coated with a diamond grinding paste, and is polished by an electric grinder provided with a wool felt grinding head until the surface is bright.
Further, when the cathode luminescent sheet and the inclusion sheet are manufactured to be polished, the diamond grinding paste is coated on one surface of the rock slice of the sheet, and the sheet is polished to be bright by an electric grinder with a wool felt grinding head.
Compared with the prior art, the invention has the following advantages:
the method does not involve a water grinding and polishing process in the whole process of sheet making, and the prepared sheet has no whitening phenomenon, so that the whitening phenomenon of 502 glue after sticking the sheet is completely avoided, and the definition and brightness of the sheet are greatly improved.
According to the method, the cracking phenomenon of the rock sample caused by the influence of the cooling liquid, the grinding liquid and the polishing liquid is avoided in the process of preparing the rock sample, the generation of false seam false holes is avoided, and the success rate of preparing the rock sample is greatly improved while the original information of the rock sample is maintained.
The method of the invention is applicable to the production of various rock slices.
Drawings
FIG. 1 shows the effect of a mudstone plain sheet made by the method of the invention;
fig. 2 is a schematic diagram of a conventional shale sheet.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular forms also are intended to include the plural forms unless the context clearly indicates otherwise, and furthermore, it is to be understood that when the terms "comprises", "comprising" are used in this specification, they specify the presence of stated features, steps, operations, and combinations thereof.
In order to enable those skilled in the art to more clearly understand the technical scheme of the present invention, the technical scheme of the present invention will be described in detail with reference to specific embodiments.
Example 1
A slice-making method of a land shale oil reservoir rock slice is characterized in that in a sampling step, cooling liquid is not added for dry cutting treatment during slice-making; and (5) adopting a dust remover to carry out suction cooling dust removal treatment.
In the plane grinding step, roughly grinding a plane, and finely grinding the plane, wherein the corresponding silicon carbide and ethanol are mixed according to the mass volume ratio of 1:2 g/mL;
in the grinding step, the corresponding carborundum and ethanol are mixed in the fine grinding sheet according to the mass-volume ratio of 1:2 g/mL.
And a slicing treatment step is added between the sticking step and the grinding step, the thickness of the rock sample stuck on the glass slide is reduced to less than or equal to 0.5mm on a slicing machine, cooling liquid is not added during slicing, and a dust remover is used for carrying out suction cooling dust removal treatment.
After the dyeing is carried out by using the dyeing agent, the dyeing agent is quickly washed by clean water and is quickly dried by an electric blower immediately.
The other steps of the method are the same as the method for producing polarized flakes in the rock production method standard (SY/T5913-2004). FIG. 2 is a sheet prepared using standard methods; fig. 1 shows a sheet prepared by the method of the present invention, which has no whitening phenomenon and significantly improved sharpness and brightness, compared with the sheet prepared by the method of the present invention.
Example 2
A method of producing a sheet of land shale oil reservoir rock, comprising the steps of:
in the plane grinding step, roughly grinding a plane, and finely grinding the plane, wherein the corresponding silicon carbide and ethanol are mixed according to the mass volume ratio of 1:2 g/mL;
in the grinding step, the corresponding carborundum and ethanol are mixed in the fine grinding sheet according to the mass-volume ratio of 1:2 g/mL.
When plane polishing is carried out, the plane ground by the rock sample is coated with the diamond grinding paste, and an electric grinder with a wool felt grinding head is used for polishing until the surface is bright.
And a slicing treatment step is added between the sticking step and the grinding step, the thickness of the rock sample stuck on the glass slide is reduced to less than or equal to 0.5mm on a slicing machine, cooling liquid is not added during slicing, and a dust remover is used for carrying out suction cooling dust removal treatment.
When polishing the rock slice, coating diamond grinding paste on one side of the rock slice of the bonded slice, and polishing to be bright by an electric grinder with a wool felt grinding head.
The other steps of the method are the same as the method for producing inclusion flakes in the rock production method standard (SY/T5913-2004).
Example 3
A method of producing a sheet of land shale oil reservoir rock, comprising the steps of:
in the plane grinding step, roughly grinding a plane, and finely grinding the plane, wherein the corresponding silicon carbide and ethanol are mixed according to the mass volume ratio of 1:2 g/mL;
in the grinding step, the corresponding carborundum and ethanol are mixed in the fine grinding sheet according to the mass-volume ratio of 1:2 g/mL.
And a slicing treatment step is added between the sticking step and the grinding step, the thickness of the rock sample stuck on the glass slide is reduced to less than or equal to 0.5mm on a slicing machine, cooling liquid is not added during slicing, and a dust remover is used for carrying out suction cooling dust removal treatment.
When polishing the slice, coating diamond grinding paste on one side of the slice, and polishing to brightness by an electric grinder with a wool felt grinding head.
The other steps of the method are the same as the method for producing a cathodoluminescent sheet in the rock production method standard (SY/T5913-2004).
The method has high success rate of making the rock sample and can completely retain the original information of the rock sample.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.
Claims (7)
1. A slice preparation method of a land shale oil reservoir rock slice is characterized in that in the sampling step, no cooling liquid is added for dry cutting treatment during slicing;
in the steps of grinding a plane and grinding the plate, silicon carbide and an organic solvent are mixed to be used as grinding agents;
in polishing, the polishing was performed with a grinder and a diamond paste without using a polishing liquid.
2. The method for producing a sheet of land shale oil reservoir rock according to claim 1, wherein the wind suction cooling dust removal process is performed at the time of the dry cutting process.
3. The method for producing a sheet of land shale oil reservoir rock according to claim 1, wherein the mass-to-volume ratio of silicon carbide to organic solvent is 1-5:2-15g/mL.
4. A method of producing a sheet of land shale oil reservoir rock as claimed in claim 3, wherein said organic solvent is ethanol.
5. The method for preparing a sheet of a land shale oil reservoir rock according to claim 1, wherein a slicing process step is added between the steps of sticking and lapping, the rock sample stuck on the slide glass is cut down to a thickness of 0.5mm or less on a slicer, no cooling liquid is added during cutting, and a suction cooling dust removal process is performed.
6. The method for producing a sheet of land shale oil reservoir rock according to claim 1, wherein in the process of producing the sheet of inclusion sheet, a surface of the rock sample on which the surface is ground is coated with a diamond abrasive paste, and polished to a surface brightness by an electric grinder equipped with a wool felt grinding head.
7. The method for preparing the slices of the land shale oil reservoir rock according to claim 1, wherein when preparing the cathode luminescent slices and inclusion slices for polishing the slices or polishing the slices, diamond grinding paste is coated on one side of the slices, and the slices are polished to be bright by an electric grinder with wool felt grinding heads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211106778.1A CN117686251A (en) | 2022-09-09 | 2022-09-09 | Method for producing slices of continental phase shale oil reservoir rock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211106778.1A CN117686251A (en) | 2022-09-09 | 2022-09-09 | Method for producing slices of continental phase shale oil reservoir rock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117686251A true CN117686251A (en) | 2024-03-12 |
Family
ID=90127200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211106778.1A Pending CN117686251A (en) | 2022-09-09 | 2022-09-09 | Method for producing slices of continental phase shale oil reservoir rock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117686251A (en) |
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2022
- 2022-09-09 CN CN202211106778.1A patent/CN117686251A/en active Pending
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