CN102346139B - Identification method of andesine in fine settlement (sedimentary rock) - Google Patents
Identification method of andesine in fine settlement (sedimentary rock) Download PDFInfo
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Abstract
The invention relates an identification method of andesine in a fine settlement (sedimentary rock), comprising the following steps: putting a rock slice under an orthogonal polarizing microscope; putting the object under test in an extinction position; rotating the objective table 45 DEG to allow the long axis of the object under test to be angled 15 DEG from the cross wire of the second quadrant and the fourth quadrant in the eyepiece of the microscope; inserting a gypsum test panel; allowing the long axis, which is a small refractive index, of the object under test to be overlapped with a small refractive index X of the gypsum test panel, acquiring andesine which has an interference color of blue, and detecting the content of andesine that has an interference color of blue with area visual assessment percentage method; then rotating the objective table 90 DEG to allow the long axis of the object under test to be angled 15 DEG from the cross wire of the first quadrant and the third quadrant in the eyepiece of the microscope; allowing the long axis, which is a small refractive index, of the object under test to be overlapped with a large refractive index Z of the gypsum test panel, acquiring andesine which has an interference color of yellow, and detecting the content of andesine that has an interference color of yellow with area visual assessment percentage method. According to the invention, the andesine in the fine-particle settlement (sedimentary rock) can be identified rapidly and accurately.
Description
Technical field:
The present invention relates to a kind of under mirror fast, precise Identification goes out andesine in the fine sediment (rock) (particle diameter is less than 0.03mm) and the method for content.
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 Separate Fine-grained Minerals is a tip-like, can't pick out 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 ash tuff.Whether rock is to distinguish pelyte or the Main Basis of peace mountain matter volcanic ash tuff take andesine as main.Pelyte belongs to the normal sedimentation rock that the parent rocks carrying comes, and peace mountain matter volcanic ash tuff is the volcanoclastic rock that volcanic eruption is fallen down from the crater, peace mountain matter magma is mainly andesine, can not go out a large amount of clay minerals by direct crystallization in eruption in the process that drops.For precise Identification pelyte and An Shan matter volcanic ash tuff so distinguish the purpose of fine andesine and fine clay mineral.
The present invention mainly utilizes the length fast of andesine and the characteristic that aligns, and relates under a kind of mirror fast, the andesine in the fine sediment of precise Identification (rock) and the method for assay.
Andesine in the fine sediment (rock) of present domestic employing and assay are as background technology take People's Republic of China's oil and gas industry standard SY/T 5368--2000 " petrographic thin section evaluation ".The shortcoming of the method is under polarizing microscope, and fine andesine and fine clay mineral are aggregate shape directional profile at Jing Xiajun, and each Separate Fine-grained Minerals is tip-like and distributes, and can't pick out 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 ash tuff.Pelyte belongs to the normal sedimentation rock that the parent rocks carrying comes, and volcanic ash tuff is the volcanoclastic rock that volcanic eruption is fallen down from the crater.Lithology is forbidden surely so that whole reservoir quality can't be discussed at all.More can't accurately make lithology, electrically, four sexual intercourse such as oiliness and physical property, finally have a strong impact on the discovery of petroleum exploration and development oil prospecting direction and find.The precise Identification andesine is particularly important for distinguishing peace mountain matter volcanic ash tuff and pelyte.
The sedimentogeneous rock plagioclase macroanalysis method of present domestic employing is as background technology take 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 the method is, speed is slow, and cost is high, and the cycle is long.And can not can both do at any time the macroanalysis of sedimentogeneous rock plagioclase by every sample, can only determine the plagioclase total amount at present, and soda feldspar, oligoclase, andesine, labradorite, bytownite and the lime feldspar etc. that specifically belong in the plagioclase are differentiated not out.
Summary of the invention
The purpose of this invention is to provide a kind of under mirror fast, precise Identification goes out andesine in the fine sediment (rock) and the method for content.Fine (particle diameter is less than the 0.03mm) volcanic ash 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 ash tuff of identifying.Lithology is the basis of oil geology research, final be used for correct discuss reservoir quality, correctly discuss lithology, electrically, four sexual intercourse such as oiliness and physical property; And provide the accurate science foundation 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 identifying in the fine sediment (rock) of the present invention.
Method step is as follows:
(1) at first sampling, every sample cuts the rock sample of 25mm * 25mm * 5mm or diameter 25mm * 5mm, and remaining sample is done hand specimen.
(2) glue is solid: will need the solid rock sample of glue by number with electric dry oven in heating between temperature 50 C～60 ℃, oven 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 heat at the sand-bath stove, and constantly stir with glass bar, close electric furnace after rosin is melted fully.For subsequent use after the cooling.) 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 with " 502 " glue and consolidate.The rock sample that glue is admittedly good takes out successively, replaces.
(3) corase grind plane: the rock sample that glue is admittedly good adds the water preliminary grinding at wafer lapping machine with No. 100 emery, then carries out second time glue and consolidates.
(4) flat surface grinding in: will be through the solid rock sample of glue for the second time, wafer lapping machine with No. 400 emery with grind during water mixes, be milled to the plane smooth.
(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, is milled to the plane smooth at wafer lapping machine again.
(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, the one side of micro slide worn into hair side for subsequent use.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 at spirit lamp, then the solid abies balsam are coated on the central part and rock sample plane of micro slide, make rock sample and micro slide the gummed, with Medical forceps the micro slide all around is pushed gently, make glue-line thin and even, without bubble.Use " 502 " sheet adhesive.
(8) corase grind thin slice: with the rock sample that glues, mix corase grind at wafer lapping machine 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 be milled to 0.12mm～0.18mm at wafer lapping machine, it is complete that sliver keeps.
(10) correct grinding thin slice: the sliver that fine grinding is good, usefulness W20 number, W10 emery mix with water respectively, are milled to step by step 0.04mm～0.05mm on wafer lapping machine.Under the polarizing microscope, quartzy interference color are that one-level is yellow, without the drop phenomenon, then are blended in W7 emery and water and are 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, determines according to the requirement of user and appraiser.According to the requirement of appraiser, select the rock coloring agent to dye.The dyeing area is 1/2 or 1/3 of rock sample surface, and dyeing time can take the circumstances into consideration to rest within the 1min, washes down with clear water immediately after the dyeing and dries.Drip an amount of fir pre-prepared colloid (preparation of fir pre-prepared colloid see in the appendix A A.2) at the sliver of dyeing, again cover plate is heated slightly, be placed on the glue plane, push gently with Medical forceps, discharge bubble.Then remaining glue around the even cover glass of little icking tool of using heating after the petrographic thin section cooling of building cover plate cleaned with alcohol.
(12) label: paste respectively the label with sample number, numbering, pound sign, well depth of filling in burnt black ink at thin slice front upper/lower terminal.
(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) adopting area visual estimation number percent method to measure interference color under the mirror is blue andesine content.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; Then select the ken first thin slice to be made the circuit of 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 degree angles (Fig. 2);
(20) long axis direction of determinand is that the large index of refraction Z of little index of refraction and gypsum plate is overlapping, and what interference color reduced yellowing is andesine;
(21) adopting area visual estimation number percent method to measure interference color under the mirror is yellow andesine content; 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; Then select the ken first thin slice to be made the circuit of 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 the correct rock class of identifying.Especially this class difficult problem of peace mountain matter volcanic ash tuff that the normal sedimentation thing pelyte that comes for accurate differentiation parent rock carrying or volcanic eruption are fallen down from the crater provides accurate distinguishing rule.Lithology is fixed whole reservoir quality is had a significant impact.Can accurately make lithology, electrically, four sexual intercourse such as oiliness and physical property, 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
Organize the rock sample of (P2p) 1588.0 meters as example take the eastern Huoshaoshan of standard oil field H2452 Jing Pingdiquan
Concrete steps:
(1) at first sampling, every sample cuts the rock sample of 25mm * 25mm * 5mm or diameter 25mm * 5mm, and remaining sample is done hand specimen.
(2) glue is solid: will need the solid rock sample of glue by number with electric dry oven in heating between temperature 50 C～60 ℃, oven 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 heat at the sand-bath stove, and constantly stir with glass bar, close electric furnace after rosin is melted fully.For subsequent use after the cooling.) 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 with " 502 " glue and consolidate.The rock sample that glue is admittedly good takes out successively, replaces.
(3) corase grind plane: the rock sample that glue is admittedly good adds the water preliminary grinding at wafer lapping machine with No. 100 emery, then carries out second time glue and consolidates.
(4) flat surface grinding in: will be through the solid rock sample of glue for the second time, wafer lapping machine with No. 400 emery with grind during water mixes, be milled to the plane smooth.
(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, is milled to the plane smooth at wafer lapping machine again.
(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, the one side of micro slide worn into hair side for subsequent use.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 at spirit lamp, then the solid abies balsam are coated on the central part and rock sample plane of micro slide, make rock sample and micro slide the gummed, with Medical forceps the micro slide all around is pushed gently, make glue-line thin and even, without bubble.Use " 502 " sheet adhesive.
(8) corase grind thin slice: with the rock sample that glues, mix corase grind at wafer lapping machine 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 be milled to 0.12mm～0.18mm at wafer lapping machine, it is complete that sliver keeps.
(10) correct grinding thin slice: the sliver that fine grinding is good, usefulness W20 number, W10 emery mix with water respectively, are milled to step by step 0.04mm～0.05mm on wafer lapping machine.Under the polarizing microscope, quartzy interference color are that one-level is yellow, without the drop phenomenon, then are blended in W7 emery and water and are 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, determines according to the requirement of user and appraiser.According to the requirement of appraiser, select the rock coloring agent to dye.The dyeing area is 1/2 or 1/3 of rock sample surface, and dyeing time can take the circumstances into consideration to rest within the 1min, washes down with clear water immediately after the dyeing and dries.Drip an amount of fir pre-prepared colloid (preparation of fir pre-prepared colloid see in the appendix A A.2) at the sliver of dyeing, again cover plate is heated slightly, be placed on the glue plane, push gently with Medical forceps, discharge bubble.Then remaining glue around the even cover glass of little icking tool of using heating after the petrographic thin section cooling of building cover plate cleaned with alcohol.
(12) label: paste respectively the label with sample number, numbering, pound sign, well depth of filling in burnt black ink at thin slice front upper/lower terminal.
(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, 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) measure the content that interference color are the andesine C of blueness, C=55% under the mirror.
(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 degree angles.
(20) long axis direction of determinand is that the large 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 large index of refraction Z of little index of refraction and gypsum plate is overlapping, and interference color reduce yellowing).
(21) measure the content that interference color are the andesine C of yellow, C=55% under the mirror.
Claims (1)
1. the authentication method of andesine in the fine sedimentogeneous rock, fine sedimentogeneous rock particle diameter is characterized in that less than 0.03mm:
Method step is as follows:
(1) at first sampling, every sample cuts the rock sample of 25mm * 25mm * 5mm, and remaining sample is done hand specimen;
(2) glue is solid: will need the solid rock sample of glue by number with electric dry oven in heating between temperature 50 C～60 ℃, oven dry, with oleoresin adhesive rock sample 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 drip strike-through admittedly with " 502 " glue, the rock sample that glue is admittedly good takes out successively, replaces;
The preparation of oleoresin adhesive: rosin and terebinthina are put into enamelled cup by the quality of 3:2 after than weighing heat at the sand-bath stove, and constantly stir with glass bar, close electric furnace after rosin is melted fully, for subsequent use after the cooling; (3) corase grind plane: the rock sample that glue is admittedly good adds the water preliminary grinding at wafer lapping machine with No. 100 emery, then carries out second time glue and consolidates;
(4) flat surface grinding in: will be through the solid rock sample of glue for the second time, wafer lapping machine with No. 400 emery with grind during water mixes, be milled to the plane smooth;
(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, is milled to the plane smooth at wafer lapping machine again;
(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, the one side of micro slide worn into hair side for subsequent use, 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 at 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, with Medical forceps the micro slide all around is pushed gently, make glue-line thin and even, without bubble, use " 502 " sheet adhesive;
(8) corase grind petrographic thin section: with the rock sample that glues, mix corase grind at wafer lapping machine with water with No. 100, No. 120 emery, thickness is milled to 0.28mm～0.40mm, and petrographic thin section does not come unstuck;
(9) fine grinding petrographic thin section: will roughly grind good petrographic thin section, and mix with water with W28 emery, and be milled to 0.12mm～0.18mm at wafer lapping machine, it is complete that petrographic thin section keeps;
(10) correct grinding petrographic thin section: the petrographic thin section that fine grinding is good, usefulness W20 number, W10 emery mix with water respectively, are milled to step by step 0.04mm～0.05mm on wafer lapping machine; Under the polarizing microscope, quartzy interference color are that one-level is yellow, without the drop phenomenon, then are blended in W7 emery and water and are 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 the rock coloring agent to dye, the dyeing area is 1/2 or 1/3 of rock sample surface, dyeing time washes down with clear water immediately after the dyeing and dries within 1min, at a petrographic thin section fir pre-prepared colloid of dyeing, again cover plate is heated slightly, be placed on the glue plane, push gently with Medical forceps, discharge bubble, then remaining glue around the even cover glass of little icking tool of using heating after the petrographic thin section cooling of building cover plate cleaned with alcohol;
(12) label: paste respectively the label with sample number, numbering, pound sign, well depth of filling in burnt black ink at petrographic thin section front upper/lower terminal;
(13) the normal conventional petrographic thin section that makes is placed under the orthogonal polarizing microscope;
(14) rotate objective table and forward petrographic thin section 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 petrographic thin section long axis direction and the microscope ocular, four-quadrant crosshair are 15 degree angles;
(16) insert gypsum plate;
(17) long axis direction of petrographic thin section 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) adopting area visual estimation number percent method to measure interference color under the mirror be blue andesine content, 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; Then select the ken first petrographic thin section to be made the circuit of 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 petrographic thin section long axis direction and the microscope ocular is 15 degree angles;
(20) long axis direction of petrographic thin section is that the large index of refraction Z of little index of refraction and gypsum plate is overlapping, and what interference color reduced yellowing is andesine;
(21) adopting area visual estimation number percent method to measure interference color under the mirror is yellow andesine content;
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; Then select the ken first petrographic thin section to be made the circuit of comprehensively, estimate and the percentage composition that interference color are yellow andesine;
Percentage composition in the method all is volumn concentration.
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| 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 |
| CN104422692B (en) * | 2013-08-30 | 2017-10-17 | 中国石油天然气股份有限公司 | A kind of authentication method of microsize grade volcanic dust tufaceous mud stone |
| CN104422670B (en) * | 2013-08-30 | 2017-10-17 | 中国石油天然气股份有限公司 | A kind of authentication method of microsize grade volcanic ash tuff |
| CN106198535B (en) * | 2015-05-04 | 2019-05-03 | 中国石油天然气股份有限公司 | The identification method of carbonate mineral |
| CN111189830B (en) * | 2020-01-19 | 2022-08-19 | 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 |
| 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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| JP2000162053A (en) * | 1998-11-24 | 2000-06-16 | Mitsubishi Materials Corp | Apparatus and method for analyzing stress in rock mass |
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| CN1525154A (en) * | 2003-02-25 | 2004-09-01 | 朱玉双 | Vadose mechanism of transmission micro oil gas and reservoir bed damage analyzer |
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