CN102346139A - Method for identifying feldspar in fine sediment (rock) - Google Patents
Method for identifying feldspar in fine sediment (rock) Download PDFInfo
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- CN102346139A CN102346139A CN2010102460092A CN201010246009A CN102346139A CN 102346139 A CN102346139 A CN 102346139A CN 2010102460092 A CN2010102460092 A CN 2010102460092A CN 201010246009 A CN201010246009 A CN 201010246009A CN 102346139 A CN102346139 A CN 102346139A
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- glue
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- rock sample
- emery
- interference color
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- 239000011435 rock Substances 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000013049 sediment Substances 0.000 title claims abstract description 12
- 239000010433 feldspar Substances 0.000 title abstract description 9
- 239000010440 gypsum Substances 0.000 claims abstract description 14
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 14
- 230000000007 visual effect Effects 0.000 claims abstract description 9
- 230000008033 biological extinction Effects 0.000 claims abstract description 4
- 210000004209 hair Anatomy 0.000 claims abstract description 4
- XYQHCDPZBXIAGW-UHFFFAOYSA-N Andesine Natural products COC(=O)C1=Cc2ccc3c(CCN(C)C)cc(OC)c(O)c3c2C(=O)O1 XYQHCDPZBXIAGW-UHFFFAOYSA-N 0.000 claims description 45
- 229910052658 andesine Inorganic materials 0.000 claims description 45
- 239000003292 glue Substances 0.000 claims description 39
- 238000000227 grinding Methods 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 229910001651 emery Inorganic materials 0.000 claims description 30
- 239000000203 mixture Substances 0.000 claims description 18
- 239000007787 solid Substances 0.000 claims description 14
- 238000004043 dyeing Methods 0.000 claims description 12
- 239000000853 adhesive Substances 0.000 claims description 9
- 230000001070 adhesive effect Effects 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 9
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 6
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000008601 oleoresin Substances 0.000 claims description 6
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 6
- 239000000084 colloidal system Substances 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 4
- 238000004383 yellowing Methods 0.000 claims description 4
- 244000283070 Abies balsamea Species 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000010430 carbonatite Substances 0.000 claims description 3
- 239000003086 colorant Substances 0.000 claims description 3
- 239000006059 cover glass Substances 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 239000010419 fine particle Substances 0.000 abstract 1
- 230000010287 polarization Effects 0.000 abstract 1
- 239000002734 clay mineral Substances 0.000 description 13
- 239000000428 dust Substances 0.000 description 10
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 229910052655 plagioclase feldspar Inorganic materials 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 3
- 230000001568 sexual effect Effects 0.000 description 3
- 238000003556 assay Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 229910052660 bytownite Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 229910052659 labradorite Inorganic materials 0.000 description 1
- 239000011018 labradorite Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 229910052657 oligoclase Inorganic materials 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention relates to a method for identifying feldspar in a fine sediment (rock); placing the rock slices under an orthogonal polarization microscope; transferring the object to be detected to an extinction position; rotating the objective table by 45 degrees, and enabling the long axis direction of the object to be measured to form an included angle of 15 degrees with the cross silk threads of the second quadrant and the fourth quadrant in the eyepiece of the microscope; inserting a gypsum test board; overlapping the long axis direction of the object to be detected with the small refractive index X of the gypsum test board, determining the middle feldspar with blue interference color by adopting an area mesh estimation percentage method; rotating the objective table by 90 degrees, and enabling the long axis direction of the object to be measured to form an included angle of 15 degrees with the cross hairs of the first quadrant and the third quadrant in the eyepiece of the microscope; the long axis direction of the object to be detected is a small refractive index which is overlapped with a large refractive index Z of the gypsum test board, and the object with the interference color of yellow feldspar is a medium feldspar; measuring the content of feldspar with yellow interference color by adopting an area visual estimation percentage method; the feldspar in the micro-fine particle sediment (rock) can be accurately and quickly identified.
Description
Technical field:
The present invention relates to a kind of andesine and method of content that under mirror, fast, accurately identifies in the fine sediment (rock) (particle diameter is less than 0.03mm).
Background technology:
At present under the mirror, for andesine and the difficult difference of clay mineral and the evaluation of grade fine (particle diameter is less than 0.03mm).Numerous fine andesine and clay mineral are the aggregate shape at Jing Xiajun, directional profile, and each fine mineral all is a tip-like, can't pick out the form and the interference color of single mineral at all, is easy to obscure.Fine andesine is identified into fine clay mineral, or fine clay mineral is identified into fine andesine.Clay mineral is pelitic important composition, and andesine is the important composition of peace mountain matter volcanic dust eruptive tuff.Whether rock is main with andesine, is to distinguish the pelyte or the main foundation of peace mountain matter volcanic dust eruptive tuff.Pelyte belongs to the normal sedimentation rock that the parent rocks carrying comes; And peace mountain matter volcanic dust eruptive tuff is the volcanoclastic rock that volcanic eruption is fallen down from the crater; Peace mountain matter magma is mainly andesine, in erupting the process that drops, can not go out a large amount of clay minerals by direct crystallization.So distinguish the purpose of fine andesine and fine clay mineral is to be used for accurately identifying pelyte and An Shan matter volcanic dust eruptive tuff.
The present invention mainly utilizes the length fast of andesine and the characteristic that aligns, and relates to the andesine fast, accurately identified under a kind of mirror in the fine sediment (rock) and the method for assay.
Andesine in the fine sediment (rock) of present domestic employing and assay are to be background technology with People's Republic of China's oil and gas industry standard SY/T 5368--2000 " petrographic thin section evaluation ".The shortcoming of this method is under polarizing microscope, and fine andesine and fine clay mineral are aggregate shape directional profile at Jing Xiajun, and each fine mineral is tip-like and distributes, and can't pick out the shape and the interference color of mineral.Be easy to obscure, fine andesine is identified into fine clay mineral or fine clay mineral is identified into fine andesine.Clay mineral is pelitic important composition, and andesine is the important composition of peace mountain matter volcanic dust eruptive tuff.Pelyte belongs to the normal sedimentation rock that the parent rocks carrying comes, and the volcanic dust eruptive tuff is the volcanoclastic rock that volcanic eruption is fallen down from the crater.Lithology is forbidden to make whole reservoir quality can't discuss surely at all.More can't accurately make lithology, electrically, four sexual intercourse such as oiliness and rerum natura, finally have a strong impact on the discovery of petroleum exploration and development oil prospecting direction and find.Identify that accurately andesine is particularly important for distinguishing peace mountain matter volcanic dust eruptive tuff and pelyte.
The sedimentogeneous rock plagioclase macroanalysis method of present domestic employing is to be background technology with the oil and gas industry standard SY/T 6210--1996 of the People's Republic of China (PRC) " sedimentogeneous rock clay mineral total amount and the quantitative analysis method of common non-clay mineral X-ray diffraction ".The shortcoming of this method is, speed is slow, and cost is high, and the cycle is long.And can not can both do the macroanalysis of sedimentogeneous rock plagioclase at any time by every sample, can only determine the plagioclase total amount at present, and the resolutions such as soda feldspar, oligoclase, andesine, labradorite, bytownite and lime feldspar that specifically belong in the plagioclase are not come out.
Summary of the invention
The purpose of this invention is to provide a kind of andesine and method of content that under mirror, fast, accurately identifies in the fine sediment (rock).Fine (particle diameter is less than 0.03mm) volcanic dust eruptive tuff that comes in order to distinguish volcanic eruption and parent rock are carried and next normal sedimentation rock-pelyte.The correct peace mountain matter volcanic dust eruptive tuff of identifying.Lithology is the basis of oil geology research, finally be used for correctly discussing reservoir quality, correctly discuss lithology, electrically, four sexual intercourse such as oiliness and rerum natura; And the accurate science foundation is provided for the discovery of petroleum exploration and development oil prospecting direction and find.
A kind of andesine and content assaying method of under mirror, fast, accurately discerning in the fine sediment (rock) of the present invention.
Method step is following:
(1) at first sampling, every sample cuts the rock sample of 25mm * 25mm * 5mm or diameter 25mm * 5mm, and surplus appearance is done hand specimen.
(2) glue is solid: will need the solid rock sample of glue by numbering with electric dry oven in heating between 50 ℃～60 ℃ of the temperature, dry.With the oleoresin adhesive (preparation of oleoresin adhesive: rosin and terebinthina put in people's enamelled cup after in 3: 2 ratio (mass ratio) weighing on the sand-bath stove, heat, and constantly stir, close electric furnace after rosin is melted fully with glass bar.The cooling back is subsequent use.) that rock is carried out glue is solid, treat that glue is baked to finger can twist into pieces, close electromagnetic oven when the color of glue is brown, or directly drip strike-through admittedly with " 502 " glue.The rock sample that glue is good admittedly takes out successively, replaces.
(3) corase grind plane: the rock sample that glue is good admittedly adds the water preliminary grinding with No. 100 emery on wafer lapping machine, carries out second time glue then and consolidates.
(4) flat surface grinding in: will pass through the solid rock sample of glue for the second time, on wafer lapping machine with No. 400 emery with grind during water mixes, it is smooth to be milled to the plane.
(5) fine grinding plane: the rock sample of flat surface grinding in will passing through, with W20 emery and water mixing fine grinding, with W10 emery and water mixing fine grinding, it is smooth to be milled to the plane again on wafer lapping machine.
(6) finished plane: with the rock sample on the good plane of fine grinding, be blended on the glass plate with W7 emery and water and finish grind, be milled to till the light of plane.
(7) bonding die: be blended on the wafer lapping machine with W20 emery and water, it is subsequent use that the one side of micro slide is worn into hair side.With soft plain-weave silk fabric cloth micro slide and the good rock sample plane of correct grinding are wiped clean.
Micro slide, rock sample are heated on spirit lamp, then the solid abies balsam is coated on the central part and rock sample plane of micro slide, make rock sample and micro slide gummed, the micro slide all around is pushed gently, glue-line is approached and even, no bubble with medical tweezers.Use " 502 " sheet adhesive.
(8) corase grind thin slice: with the rock sample that glues, on wafer lapping machine, mix corase grind with water with No. 100, No. 120 emery, thickness is milled to 0.28mm～0.40mm, and sliver does not come unstuck.
(9) fine grinding thin slice: will roughly grind good sliver, and mix with water with W28 emery, and on wafer lapping machine, be milled to 0.12mm～0.18mm, sliver is kept perfectly.
(10) correct grinding thin slice: the sliver that fine grinding is good, mix with water with W20 number, W10 emery respectively, on wafer lapping machine, be milled to 0.04mm～0.05mm step by step.Under the polarizing microscope, quartzy interference color are that one-level is yellow, and no drop phenomenon is blended in W7 emery and water then and is milled to 0.03mm on the glass plate, and quartzy interference color are the one-level canescence under the polarizing microscope; As be carbonatite, then be milled to 0.04mm, clear in structure under the polarizing microscope, interference color are senior white.
(11) cover plate polarisation thin slice is generally answered cover plate, analyzes requirement if any other, confirms according to the requirement of user and appraiser.According to the requirement of appraiser, select for use the rock coloring agent to dye.The dyeing area is 1/2 or 1/3 of rock sample surface, and dyeing time can be grasped within 1min as one sees fit, washes down with clear water immediately after the dyeing and dries.On the sliver of dyeing, drip an amount of fir pre-prepared colloid (preparation of fir pre-prepared colloid see in the appendix A A.2), again cover plate is heated slightly, be placed on the glue plane, push the discharge bubble with medical tweezers gently.The petrographic thin section cooling back of waiting to build cover plate is cleaned with alcohol with the surplus glue around the even cover glass of the little icking tool of heating then.
(12) label: upper/lower terminal is pasted the label of filling in burnt black ink with sample number, numbering, pound sign, well depth respectively in the thin slice front.
(13) the normal conventional petrographic thin section that makes is placed under the orthogonal polarizing microscope;
(14) rotate objective table and forward determinand to extinction position (the delustring bit position is equivalent to be 15 degree angles with the microscopically crosshair);
(15) again objective table is rotated 45 degree, two in determinand long axis direction and the microscope ocular, four-quadrant crosshair are 15 degree angles (Fig. 1);
(16) insert gypsum plate;
(17) long axis direction of determinand is that the little index of refraction X of little index of refraction and gypsum plate is overlapping, and interference color raise and become blue, are andesine;
(18) mirror adopts area visual estimation number percent method to measure the andesine content that interference color are blueness down.Area visual estimation number percent method concrete steps are: at first use low power object lens to estimate percentage, and the camera lens multiple that uses is indicated on form; Select the ken earlier thin slice to be made the circuit of then comprehensively, estimate and the percentage composition that interference color are blue andesine.
(19) again objective table is rotated 90 degree, the crosshair of one, three quadrants in determinand long axis direction and the microscope ocular is 15 spends angles (Fig. 2);
(20) long axis direction of determinand is that the big index of refraction Z of little index of refraction and gypsum plate is overlapping, and what interference color reduced yellowing is andesine;
(21) mirror adopts area visual estimation number percent method to measure the andesine content that interference color are yellow down; Area visual estimation number percent method concrete steps are: at first use low power object lens to estimate percentage, and the camera lens multiple that uses is indicated on form; Select the ken earlier thin slice to be made the circuit of then comprehensively, estimate and the percentage composition that interference color are yellow andesine.
The present invention can be accurately fast, identify the andesine in the microfine sediment (rock).Be used for correctly identifying the rock class.Especially the normal sedimentation thing pelyte that comes for accurate differentiation parent rock carrying still is peace mountain this type of matter volcanic dust eruptive tuff difficult problem that volcanic eruption is fallen down from the crater, and accurate distinguishing rule is provided.Lithology is fixed has very big influence to whole reservoir quality.Can accurately make lithology, electrically, four sexual intercourse such as oiliness and rerum natura, finally the discovery for petroleum exploration and development oil prospecting direction and find provides the accurate science foundation.
The method is very quick, accurate, and practicality is arranged very much, and is significant.Each elephant has analogue both at home and abroad, can apply.
Description of drawings
Under Fig. 1 mirror in the long axis direction of determinand and the microscope ocular two, four-quadrant crosshair is 15 degree angles.
Under Fig. 2 mirror in determinand long axis direction and the microscope ocular crosshair of one, three quadrants be 15 the degree angles.
Embodiment
The rock sample of burning 1588.0 meters of oil field, mountain H2452 Jing Pingdiquan groups (P2p) with accurate east is an example
Concrete steps:
(1) at first sampling, every sample cuts the rock sample of 25mm * 25mm * 5mm or diameter 25mm * 5mm, and surplus appearance is done hand specimen.
(2) glue is solid: will need the solid rock sample of glue by numbering with electric dry oven in heating between 50 ℃～60 ℃ of the temperature, dry.With the oleoresin adhesive (preparation of oleoresin adhesive: rosin and terebinthina put in people's enamelled cup after in 3: 2 ratio (mass ratio) weighing on the sand-bath stove, heat, and constantly stir, close electric furnace after rosin is melted fully with glass bar.The cooling back is subsequent use.) that rock is carried out glue is solid, treat that glue is baked to finger can twist into pieces, close electromagnetic oven when the color of glue is brown, or directly drip strike-through admittedly with " 502 " glue.The rock sample that glue is good admittedly takes out successively, replaces.
(3) corase grind plane: the rock sample that glue is good admittedly adds the water preliminary grinding with No. 100 emery on wafer lapping machine, carries out second time glue then and consolidates.
(4) flat surface grinding in: will pass through the solid rock sample of glue for the second time, on wafer lapping machine with No. 400 emery with grind during water mixes, it is smooth to be milled to the plane.
(5) fine grinding plane: the rock sample of flat surface grinding in will passing through, with W20 emery and water mixing fine grinding, with W10 emery and water mixing fine grinding, it is smooth to be milled to the plane again on wafer lapping machine.
(6) finished plane: with the rock sample on the good plane of fine grinding, be blended on the glass plate with W7 emery and water and finish grind, be milled to till the light of plane.
(7) bonding die: be blended on the wafer lapping machine with W20 emery and water, it is subsequent use that the one side of micro slide is worn into hair side.With soft plain-weave silk fabric cloth micro slide and the good rock sample plane of correct grinding are wiped clean.
Micro slide, rock sample are heated on spirit lamp, then the solid abies balsam is coated on the central part and rock sample plane of micro slide, make rock sample and micro slide gummed, the micro slide all around is pushed gently, glue-line is approached and even, no bubble with medical tweezers.Use " 502 " sheet adhesive.
(8) corase grind thin slice: with the rock sample that glues, on wafer lapping machine, mix corase grind with water with No. 100, No. 120 emery, thickness is milled to 0.28mm～0.40mm, and sliver does not come unstuck.
(9) fine grinding thin slice: will roughly grind good sliver, and mix with water with W28 emery, and on wafer lapping machine, be milled to 0.12mm～0.18mm, sliver is kept perfectly.
(10) correct grinding thin slice: the sliver that fine grinding is good, mix with water with W20 number, W10 emery respectively, on wafer lapping machine, be milled to 0.04mm～0.05mm step by step.Under the polarizing microscope, quartzy interference color are that one-level is yellow, and no drop phenomenon is blended in W7 emery and water then and is milled to 0.03mm on the glass plate, and quartzy interference color are the one-level canescence under the polarizing microscope; As be carbonatite, then be milled to 0.04mm, clear in structure under the polarizing microscope, interference color are senior white.
(11) cover plate: the polarisation thin slice is generally answered cover plate, analyzes requirement if any other, confirms according to the requirement of user and appraiser.According to the requirement of appraiser, select for use the rock coloring agent to dye.The dyeing area is 1/2 or 1/3 of rock sample surface, and dyeing time can be grasped within 1min as one sees fit, washes down with clear water immediately after the dyeing and dries.On the sliver of dyeing, drip an amount of fir pre-prepared colloid (preparation of fir pre-prepared colloid see in the appendix A A.2), again cover plate is heated slightly, be placed on the glue plane, push the discharge bubble with medical tweezers gently.The petrographic thin section cooling back of waiting to build cover plate is cleaned with alcohol with the surplus glue around the even cover glass of the little icking tool of heating then.
(12) label: upper/lower terminal is pasted the label of filling in burnt black ink with sample number, numbering, pound sign, well depth respectively in the thin slice front.
(13) the normal conventional petrographic thin section that makes is placed under the orthogonal polarizing microscope.
(14) rotate objective table and forward determinand to extinction position (the delustring bit position is equivalent to be 15 degree angles with the microscopically crosshair).
(15) again objective table is rotated 45 degree, two in determinand long axis direction and the microscope ocular, four-quadrant crosshair are 15 degree angles.
(16) insert gypsum plate.
(17) long axis direction of determinand is that the little index of refraction X of little index of refraction and gypsum plate is overlapping, and interference color raise and become blue, are andesine.
1588.0 meters of H2452 well P2p well depths; Interference color are the blue andesine that is; 40 times (under the polarizing microscope; In andesine long axis direction and the microscope ocular two, four-quadrant crosshair are 15 degree angles, and the long axis direction of andesine is that the little index of refraction X of little index of refraction and gypsum plate is overlapping, and interference color raise and become blueness).
(18) mirror is measured the content that interference color are the andesine C of blueness, C=55% down.
(19) again objective table is rotated 90 degree, the crosshair of one, three quadrants in determinand long axis direction and the microscope ocular is 15 spends angles.
(20) long axis direction of determinand is that the big index of refraction Z of little index of refraction and gypsum plate is overlapping, and what interference color reduced yellowing is andesine.
1588.0 meters of H2452 well P2p well depths; Interference color are the yellow andesine that is; 40 times (crosshair of one, three quadrants under the polarizing microscope in andesine long axis direction and the microscope ocular is 15 degree angles; The long axis direction of andesine is that the big index of refraction Z of little index of refraction and gypsum plate is overlapping, and interference color reduce yellowing).
(21) mirror is measured the content that interference color are the andesine C of yellow, C=55% down.
Claims (1)
1. the authentication method of andesine in the fine sediment (rock), fine sediment (rock) particle diameter is characterized in that less than 0.03mm:
Method step is following:
(1) at first sampling, every sample cuts the rock sample of 25mm * 25mm * 5mm or diameter 25mm * 5mm, and surplus appearance is done hand specimen;
(2) glue is solid: will need the solid rock sample of glue by numbering with electric dry oven in heating between 50 ℃～60 ℃ of the temperature, dry; With oleoresin adhesive rock is carried out glue admittedly; Treat that glue is baked to finger and can twist, close when the color of glue is brown electromagnetic oven into pieces; Or directly dripping strike-through admittedly with " 502 " glue, the rock sample that glue is good admittedly takes out successively, replaces;
The preparation of oleoresin adhesive: rosin and terebinthina put in people's enamelled cup after than weighing by 3: 2 quality on the sand-bath stove, heat, and constantly stir with glass bar, close electric furnace after rosin is melted fully, the cooling back is subsequent use;
(3) corase grind plane: the rock sample that glue is good admittedly adds the water preliminary grinding with No. 100 emery on wafer lapping machine, carries out second time glue then and consolidates;
(4) flat surface grinding in: will pass through the solid rock sample of glue for the second time, on wafer lapping machine with No. 400 emery with grind during water mixes, it is smooth to be milled to the plane;
(5) fine grinding plane: the rock sample of flat surface grinding in will passing through, with W20 emery and water mixing fine grinding, with W10 emery and water mixing fine grinding, it is smooth to be milled to the plane again on wafer lapping machine;
(6) finished plane: with the rock sample on the good plane of fine grinding, be blended on the glass plate with W7 emery and water and finish grind, be milled to till the light of plane;
(7) bonding die: be blended on the wafer lapping machine with W20 emery and water, it is subsequent use that the one side of micro slide is worn into hair side, with soft plain-weave silk fabric cloth micro slide and the good rock sample plane of correct grinding wiped clean;
Micro slide, rock sample are heated on spirit lamp; Then the solid abies balsam is coated on the central part and rock sample plane of micro slide, makes rock sample and micro slide gummed, the micro slide all around is pushed gently with medical tweezers; Glue-line is approached and even, no bubble, use " 502 " sheet adhesive;
(8) corase grind thin slice: with the rock sample that glues, on wafer lapping machine, mix corase grind with water with No. 100, No. 120 emery, thickness is milled to 0.28mm～0.40mm, and sliver does not come unstuck;
(9) fine grinding thin slice: will roughly grind good sliver, and mix with water with W28 emery, and on wafer lapping machine, be milled to 0.12mm～0.18mm, sliver is kept perfectly;
(10) correct grinding thin slice: the sliver that fine grinding is good, mix with water with W20 number, W10 emery respectively, on wafer lapping machine, be milled to 0.04mm～0.05mm step by step; Under the polarizing microscope, quartzy interference color are that one-level is yellow, and no drop phenomenon is blended in W7 emery and water then and is milled to 0.03mm on the glass plate, and quartzy interference color are the one-level canescence under the polarizing microscope; Carbonatite then is milled to 0.04mm, clear in structure under the polarizing microscope, and interference color are senior white;
(11) cover plate: select for use the rock coloring agent to dye, the dyeing area is 1/2 or 1/3 of rock sample surface, and dyeing time is within 1min; Wash down with clear water immediately after the dyeing and dry; On the sliver of dyeing, drip the fir pre-prepared colloid, again cover plate is heated slightly, be placed on the glue plane; Push gently with medical tweezers, discharge bubble.The petrographic thin section cooling back of waiting to build cover plate is cleaned with alcohol with the surplus glue around the even cover glass of the little icking tool of heating then;
(12) label: upper/lower terminal is pasted the label of filling in burnt black ink with sample number, numbering, pound sign, well depth respectively in the thin slice front;
(13) the normal conventional petrographic thin section that makes is placed under the orthogonal polarizing microscope;
(14) rotate objective table and forward determinand to extinction position, the delustring bit position is equivalent to be 15 degree angles with the microscopically crosshair;
(15) again objective table is rotated 45 degree, two in determinand long axis direction and the microscope ocular, four-quadrant crosshair are 15 degree angles;
(16) insert gypsum plate;
(17) long axis direction of determinand is that the little index of refraction X of little index of refraction and gypsum plate is overlapping, and interference color raise and become the blue andesine that is;
(18) to adopt down area visual estimation number percent method to measure interference color be blue andesine content to mirror, and area visual estimation number percent method concrete steps are: at first use low power object lens to estimate percentage, and the camera lens multiple of use is indicated on form; Select the ken earlier thin slice to be made the circuit of then comprehensively, estimate and the percentage composition that interference color are blue andesine;
(19) again objective table is rotated 90 degree, the crosshair of one, three quadrants in determinand long axis direction and the microscope ocular is 15 spends angles;
(20) long axis direction of determinand is that the big index of refraction Z of little index of refraction and gypsum plate is overlapping, and what interference color reduced yellowing is andesine;
(21) mirror adopts area visual estimation number percent method to measure the andesine content that interference color are yellow down; Area visual estimation number percent method concrete steps are: at first use low power object lens to estimate percentage, and the camera lens multiple that uses is indicated on form; Select the ken earlier thin slice to be made the circuit of then comprehensively, estimate and the percentage composition that interference color are yellow andesine;
Percentage composition in the method all is a volumn concentration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010246009 CN102346139B (en) | 2010-08-05 | 2010-08-05 | Method for identifying feldspar in fine sediment (rock) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010246009 CN102346139B (en) | 2010-08-05 | 2010-08-05 | Method for identifying feldspar in fine sediment (rock) |
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| CN103033515A (en) * | 2012-12-24 | 2013-04-10 | 中国石油天然气股份有限公司 | Identification method of basic extrusive rock-basalt |
| CN104422670A (en) * | 2013-08-30 | 2015-03-18 | 中国石油天然气股份有限公司 | Method for identifying particle-level volcanic dust tuff |
| CN104422692A (en) * | 2013-08-30 | 2015-03-18 | 中国石油天然气股份有限公司 | Method for identifying particle-level volcanic dust tufaceous mudstone |
| CN106198535A (en) * | 2015-05-04 | 2016-12-07 | 中国石油天然气股份有限公司 | Method for identifying carbonate minerals |
| CN111189830A (en) * | 2020-01-19 | 2020-05-22 | 山东省地质矿产勘查开发局第一地质大队 | Identification method of neutral volcanic rock-andesite |
| CN113432908A (en) * | 2021-07-05 | 2021-09-24 | 中国石油化工股份有限公司 | Glue scraping method for rock slice production |
| CN114199652A (en) * | 2020-09-18 | 2022-03-18 | 中海油能源发展股份有限公司 | Method for rapidly preparing rock slices on drilling site |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033515A (en) * | 2012-12-24 | 2013-04-10 | 中国石油天然气股份有限公司 | Identification method of basic extrusive rock-basalt |
| CN103033515B (en) * | 2012-12-24 | 2015-02-25 | 中国石油天然气股份有限公司 | Identification method of basic extrusive rock-basalt |
| CN104422670A (en) * | 2013-08-30 | 2015-03-18 | 中国石油天然气股份有限公司 | Method for identifying particle-level volcanic dust tuff |
| CN104422692A (en) * | 2013-08-30 | 2015-03-18 | 中国石油天然气股份有限公司 | Method for identifying particle-level volcanic dust tufaceous mudstone |
| CN104422692B (en) * | 2013-08-30 | 2017-10-17 | 中国石油天然气股份有限公司 | Method for identifying particle-level volcanic dust tufaceous mudstone |
| CN104422670B (en) * | 2013-08-30 | 2017-10-17 | 中国石油天然气股份有限公司 | Method for identifying particle-level volcanic dust tuff |
| CN106198535A (en) * | 2015-05-04 | 2016-12-07 | 中国石油天然气股份有限公司 | Method for identifying carbonate minerals |
| CN106198535B (en) * | 2015-05-04 | 2019-05-03 | 中国石油天然气股份有限公司 | Method for identifying carbonate minerals |
| CN111189830A (en) * | 2020-01-19 | 2020-05-22 | 山东省地质矿产勘查开发局第一地质大队 | Identification method of neutral volcanic rock-andesite |
| CN114199652A (en) * | 2020-09-18 | 2022-03-18 | 中海油能源发展股份有限公司 | Method for rapidly preparing rock slices on drilling site |
| CN113432908A (en) * | 2021-07-05 | 2021-09-24 | 中国石油化工股份有限公司 | Glue scraping method for rock slice production |
| CN113432908B (en) * | 2021-07-05 | 2024-04-16 | 中国石油化工股份有限公司 | Spreading method for rock slice flaking |
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Inventor after: Zhang Lixia Inventor after: Xie Jianyong Inventor after: Li Peijun Inventor after: Zhu Xiping Inventor after: Song Xinping Inventor after: Zhong Quanfeng Inventor before: Zhang Lixia Inventor before: Li Peijun Inventor before: Zhu Xiping Inventor before: Song Xinping |
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