CN112539979A - Rock debris sample containing device and rock debris cast body sheet making method using same - Google Patents
Rock debris sample containing device and rock debris cast body sheet making method using same Download PDFInfo
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- CN112539979A CN112539979A CN201910891578.3A CN201910891578A CN112539979A CN 112539979 A CN112539979 A CN 112539979A CN 201910891578 A CN201910891578 A CN 201910891578A CN 112539979 A CN112539979 A CN 112539979A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
- B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
- B65D21/0209—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together stackable or joined together one-upon-the-other in the upright or upside-down position
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
- B65D25/005—Side walls formed with an aperture or a movable portion arranged to allow removal or insertion of contents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
- B65D25/02—Internal fittings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Pathology (AREA)
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Abstract
The invention discloses a rock debris sample containing device and a rock debris cast body flaking method using the same. The invention provides a method for preparing a rock debris casting body, which comprises the following steps: 1) pretreating a rock debris sample; 2) placing the pretreated rock debris sample in a rock debris containing device, and placing the rock debris containing device in a glass test tube; 3) preparing a casting body by adopting a standard rock slice making method, injecting the casting body into a glass test tube containing a rock debris sample containing device, and solidifying to obtain a cast sample; 4) and separating the cast sample from the glass test tube, and flaking the separated cast sample to obtain a rock debris cast body slice. The invention also provides a rock debris sample containing device. The rock debris sample containing device has independence, permeability, applicability, economy and easy cutting performance, and can be used for rapidly and economically finishing the production of rock debris casting pieces in batches to serve the exploration and development of oil gas.
Description
Technical Field
The invention relates to the technical field of oil exploration. More particularly, the invention relates to a rock debris sample holding device and a rock debris cast body flaking method using the same.
Background
Rock cast pieces are the basic means and common method for studying rock mineral micro-texture and reservoir pore systems. The process comprises the following steps: 1) cutting a blocky cylindrical body with the thickness of about 3-6mm and the diameter of 25mm or a blocky square sample with the thickness of about 3-6mm and the side length of 24mm or 18mm from a monoblock rock hand specimen or a core sample, and then placing the blocky cylindrical body or the square sample into a glass cylinder with the diameter of about 29 mm; 2) putting the glass cylinder with the sample into a rock pore casting instrument, and pressing the colored casting into the pores of the rock sample under the conditions of high temperature and high pressure; 3) breaking the glass cylinder, taking out the sample, cutting and grinding into rock cast thin sheets. The method is convenient to operate, simple, practical and low in economic cost, and the prepared casting pieces can be used for rock mineral identification, microcosmic texture observation, pore classification, diagenesis judgment and the like, so that the method is widely applied.
However, with the continued advance of deep-ultra deep hydrocarbon exploration, as more than 2000 deep-ultra deep hydrocarbon reservoirs have been found worldwide in more than 80 basins and oil zones; china also makes a major breakthrough in a plurality of strata such as the Longwanggao group in the Sichuan basin and the Xiaoerbulake group in the Tarim basin. These oil and gas producing formations tend to be deeper than 4000m, and some may even break through 7000m, 8000m, for example, tower depth 1 well up to 8048 m. In order to improve the drilling efficiency, reduce the economic cost and speed up the exploration pace, oil field enterprises and drilling companies drill a large amount of rock debris samples instead of coring or not coring as little as possible in the drilling process. Most of the rock debris are millimeter-sized fine particles with the diameter of 1-5mm, and cannot be put into a sample tube to be made into a cast body slice. This presents many difficulties to the geological work of the underlying reservoir, such as identification of rock minerals, discrimination of pore systems, etc.
Due to the characteristic of tiny and broken rock debris samples, the traditional rock cast body flaking method is not suitable. For example, in the standard rock preparation method (SY/T5913-2004) in the petroleum industry, the object for preparing the rock casting is a rock sample with the diameter of 25mm multiplied by 5mm or the diameter of 25mm multiplied by 5 mm; CN101441147A provides a method for manufacturing a rock pore casting body slice, which is only manufactured for a block sample (not less than 20mm multiplied by 20 multiplied by 3mm) casting body; other methods such as the chip slice identification sample method provided by CN1544907A are only to stick the chip on the slice to make a common slice, but not to make a cast piece; although the carbonate rock debris microscopic pore casting method provided by CN106153413A can be used for manufacturing a carbonate rock debris cast body, the principle is that rock debris is placed in a test tube, and the middle of each sample is isolated only by a mica sheet, so that fine rock debris particles are easy to disorder the sample along with the sloshing of the test tube, the inclination of the mica sheet and the existence of a notch during the sample manufacturing process, the purity of the sample is influenced, and the sample is misled to produce the sample; although the method for preparing the rock debris casting based on vacuum embedding provided by CN108106892A can also guide the completion of the casting of rock debris, the principle is vacuum embedding, i.e. the pressure for pressing the casting into the rock debris is only one atmosphere, and the partially dense or low-porosity and low-permeability rock debris casting is difficult to inject, which affects the observation of later-stage pores.
Therefore, the invention provides a rock debris sample holding device and a rock debris cast body flaking method using the same, and at least one of the problems is solved.
Disclosure of Invention
One object of the invention is to provide a rock debris sample holding device; the device can complete the production of the rock debris casting pieces in batch, quickly and economically, and is used for oil-gas exploration and development.
The invention also aims to provide a method for preparing the rock debris casting body.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for preparing a rock debris casting body comprises the following steps:
1) pretreating a rock debris sample;
2) placing the pretreated rock debris sample in a rock debris containing device, and placing the rock debris containing device in a glass test tube;
3) preparing a casting body by adopting a standard rock slice making method, injecting the casting body into a glass test tube containing a rock debris sample containing device, and solidifying to obtain a cast sample;
4) and separating the cast sample from the glass test tube, and flaking the separated cast sample to obtain a rock debris cast body slice.
Preferably, the process of pretreating the rock debris sample in the step 1) specifically comprises: the rock debris samples were subjected to pre-treatment including washing, drying and screening.
Preferably, the cleaning of the debris sample comprises: and (3) cleaning pollutants such as mud, oil gas, asphalt and the like in the sampling process by using an absolute ethyl alcohol reagent.
Preferably, the drying the rock debris sample comprises: the cleaned rock debris sample was placed in a glass container, and the glass container was baked at a temperature of 110 ℃ for 12 hours.
Preferably, screening the rock debris sample comprises: selecting the dried rock debris samples according to rock debris characteristics, wherein the rock debris characteristics comprise rock debris sampling depth, rock debris uniformity and rock debris particle size, and preferably selecting the rock debris samples with large particle size, clear edges and sawtooth traces on the cross section; and (3) when the particle diameter of the rock debris sample is smaller than 1mm, placing the rock debris sample under a microscope for selection, or placing the rock debris sample on standard A4 white paper, uniformly mixing by adopting a quartering method, and then taking a plurality of rock debris samples at 1/4 positions.
Preferably, the step 2) of placing the pretreated rock debris sample in the rock debris holding device specifically includes: 5-20 pretreated rock debris samples are placed in each sample container in the rock debris sample containing device.
Preferably, the rock debris sample holding device in the step 2) comprises a plurality of sample holding containers;
the flourishing appearance container includes:
a housing having an interior chamber for containing debris; the housing includes:
a bottom wall portion;
a side wall portion integrally extending upward from a peripheral edge of the bottom wall portion; and
the top wall part is detachably connected with the opening at the top end of the side wall part; wherein,
the bottom wall portion inner side surface, the side wall portion inner side surface and the top wall portion inner side surface together constitute an inner cavity for accommodating debris;
one or more of the bottom wall portion, the side wall portion and the top wall portion includes at least one aperture;
and a mica sheet is arranged between two adjacent sample containers.
Preferably, one or more of the bottom wall portion, the side wall portion and the top wall portion includes a plurality of evenly disposed apertures.
Preferably, the housing is a cylindrical housing or a cubical housing.
Preferably, the side wall portion includes:
the side wall part is provided with a plurality of side wall parts, and each side wall part is provided with a plurality of side wall parts; the bottom surface of the limiting member group is flush with the bottom surface of the side wall part, the height of the inner limiting member is smaller than that of the side wall part, and the height of the outer limiting member is larger than that of the side wall part;
the top wall part is clamped at the top end of the side wall part through the limiting piece group.
Preferably, the side wall portion includes four equally spaced sets of stoppers.
Preferably, the side wall portion includes a stepped hole formed by an inner side surface of a top circumferential edge of the side wall portion being recessed inward to fit the top wall portion; the top wall part is clamped at the top end of the side wall part through the stepped hole.
Preferably, the side wall of the cubical casing includes:
a groove formed by inwardly recessing an inner side surface of a top circumference of a side wall portion of the cubic housing, an
An opening part which penetrates through the inner surface and the outer surface of one side of the side wall part of the cubic shell and is communicated with the groove;
the top wall part of the cubic shell is inserted from the opening part and is clamped at the top end of the side wall part of the cubic shell through the groove.
Preferably, the aperture of the open pore is 125-425 μm.
Preferably, the cylindrical housing is sized to have a diameter of 20-25mm, more preferably 25 mm; the height is 4-10mm, more preferably 6 mm.
Preferably, the cubical casing has a dimension of side length of 20-25mm, more preferably 20 mm; the height is 4-10mm, more preferably 6 mm.
Preferably, the junction of the top wall portion and the bottom wall portion is coated with glue.
Preferably, the material of the shell is wood or organic glass.
Preferably, the step 3) of injecting a casting body into the glass test tube containing the rock debris sample containing device, and solidifying to obtain a cast sample, specifically comprising:
vacuumizing a glass test tube containing the rock debris sample containing device, and injecting a cast body into the glass test tube; heating and solidifying in a step-type heating mode under the pressure condition of 25-30MPa, and cooling to room temperature to obtain a cast sample;
wherein, the step-type heating mode is as follows: the temperature is raised to 100 ℃ and then kept constant for 1 hour, and then the temperature is raised to 160 ℃ and kept constant for 1 hour.
Preferably, the step 3) of injecting the casting body into the glass test tube containing the rock debris sample containing device, and solidifying to obtain the casting sample is carried out in a high-temperature high-pressure rock pore cast body instrument.
As another aspect of the invention, the invention also provides a rock debris sample holding device used in the rock debris cast body flaking method, which comprises a plurality of sample holding containers;
the flourishing appearance container includes:
a housing having an interior chamber for containing debris; the housing includes:
a bottom wall portion;
a side wall portion integrally extending upward from a peripheral edge of the bottom wall portion; and
the top wall part is detachably connected with the opening at the top end of the side wall part; wherein,
the bottom wall portion inner side surface, the side wall portion inner side surface and the top wall portion inner side surface together constitute an inner cavity for accommodating debris;
one or more of the bottom wall portion, the side wall portion and the top wall portion includes at least one aperture;
and a mica sheet is arranged between two adjacent sample containers.
The invention has the following beneficial effects:
(1) the rock debris sample containing device provided by the invention has independence, and each sample containing container in the rock debris sample containing device is filled with a rock debris sample, so that the rock debris is not mixed with each other in the sample preparation process;
(2) the rock debris sample containing device provided by the invention has permeability, and is communicated with the ambient air environment, so that the fluid casting body can be injected;
(3) the rock debris sample containing device provided by the invention has applicability, and can be suitable for various or most high-temperature and high-pressure rock pore cast body instruments in the market;
(4) the rock debris sample containing device provided by the invention has economical efficiency, is prepared by wood and organic glass (such as acrylic plates and the like), and not only ensures the injection of a liquid casting body, but also ensures the later solidification;
(5) the rock debris sample containing device provided by the invention has the advantages of easiness in cutting, easiness in cutting by a sample cutting machine, safety and easiness in operation in the cutting process.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
FIG. 1 shows one of the schematic views of a cylindrical sample holding vessel provided by the present invention;
FIG. 2 shows a schematic view of the set of stop members of FIG. 1;
FIG. 3 shows a second schematic view of a cylindrical sample container according to the present invention;
FIG. 4 shows one of the schematic views of a cube-shaped sample container provided by the present invention;
FIG. 5 is a second schematic view of a cube-shaped sample container according to the present invention;
FIG. 6 shows a third schematic view of a cube-shaped sample container provided by the present invention;
FIG. 7 shows a fourth schematic view of a cube-shaped sample container provided by the present invention;
FIG. 8 shows one of the cylindrical sample containers provided with an opening in the bottom wall portion thereof according to the present invention;
FIG. 9 shows one of the cylindrical sample containers provided with an opening in the top wall portion thereof according to the present invention;
FIG. 10 shows one of the cylindrical sample receptacles provided by the present invention having openings in both the top and bottom wall portions;
FIG. 11 shows one of the cylindrical sample containers provided with an opening in a sidewall portion thereof according to the present invention;
FIG. 12 shows one of the cylindrical sample receptacles provided with apertures in both the side wall portion and the bottom wall portion of the invention;
FIG. 13 shows one of the cylindrical sample receptacles provided with apertures in both the side wall portion and the top wall portion of the present invention;
FIG. 14 shows one of the cylindrical sample containers provided by the present invention with the bottom wall portion, the side wall portion and the top wall portion each provided with an opening;
FIG. 15 shows a second cylindrical sample container provided with an opening in the bottom wall portion thereof according to the present invention;
FIG. 16 shows a second cylindrical sample container provided with an opening at the top wall part;
FIG. 17 shows a second cylindrical sample container provided with openings in both the top and bottom wall portions;
FIG. 18 shows a second cylindrical sample container provided with an opening in its side wall portion according to the present invention;
FIG. 19 shows a second cylindrical sample container provided with openings in both side wall portions and bottom wall portion;
FIG. 20 shows a second cylindrical sample container provided with openings in both the side wall portion and the top wall portion;
FIG. 21 shows a second cylindrical sample container provided with openings in the bottom wall, side wall and top wall;
FIG. 22 shows one of the glass test tubes provided by the present invention including a rock debris sampling device;
FIG. 23 shows a second glass test tube provided by the present invention and including a rock debris sampling device;
FIG. 24 shows a prior art glass test tube including a bulk rock sample;
FIG. 25 shows one of the rock texture profiles for the production of a cast piece of rock debris according to example 1 of the present invention;
FIG. 26 shows a second characteristic diagram of the rock texture of a rock debris cast piece in example 1 of the present invention;
FIG. 27 shows a third characteristic diagram of rock texture for the production of a rock chip cast body in example 1 of the present invention;
FIG. 28 is a fourth view showing the characteristics of the rock texture of a rock chip cast piece in example 1 of the present invention;
the test tube comprises a shell 1, a bottom wall 11, a side wall 12, a top wall 13, an inner cavity 14, a mica sheet 2, an opening 3, a limiting member group 4, an inner limiting member 41, an outer limiting member 42, a stepped hole 5, a groove 6, an opening 7, a glass test tube 8, rock debris 9 and a blocky rock sample 10.
Detailed Description
In order to more clearly illustrate the invention, the invention is further described below in connection with preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
The main objects of the traditional high-temperature and high-pressure rock pore casting instrument are block rock samples 10, as shown in FIG. 24, the operation steps can be seen in a rock slice making method (SY/T5913-; and the detritus is because tiny breakage, mostly is millimeter level granule, utilizes the in-process that high temperature high pressure rock pore cast body appearance injected into the cast body, rocks along with the glass pipe easily, inclines, the size of mica sheet, damage etc. takes place to mix, leads to coming from the sample of different areas, level, lithology to take place to obscure, influences sample purity, misleads the judgement and the application of later stage casting piece. Based on the device, the invention provides a rock debris sample containing device and a rock debris cast body sheet making method using the device, which can be used for firstly loading rock debris into a sample containing container before the rock debris is placed into a glass tube, so that different rock debris are relatively isolated, and the smooth completion of the manufacture of the rock debris cast body is ensured.
Specifically, with reference to fig. 1 to 21, a rock debris sample holding device comprises a plurality of sample holding containers;
the flourishing appearance container includes:
a housing 1 having an inner cavity 14 for containing debris; the housing 1 includes:
a bottom wall portion 11;
a side wall portion 12 integrally extending upward from a peripheral edge of the bottom wall portion 11; and
a top wall portion 13 detachably connected to the top opening of the side wall portion 12; wherein,
the inner side surface of the bottom wall part 11, the inner side surface of the side wall part 12 and the inner side surface of the top wall part 13 together form an inner cavity 14 for accommodating rock debris;
one or more of the bottom wall portion 11, the side wall portion 12 and the top wall portion 13 comprises at least one aperture 3;
and a mica sheet 2 is arranged between two adjacent sample containers.
The rock debris sample containing device is provided with a plurality of sample containing containers, and two adjacent sample containing containers are separated by mica sheets, so that the rock debris cannot be mixed with each other in the sample preparation process.
The housing 1 is a cylindrical housing or a cubic housing as a preferred embodiment of the present invention, depending on the characteristics of the sample container such as independence, permeability, applicability, and economy, and the shape and size of the cylindrical glass tube of the casting apparatus.
In order to close the container and prevent debris from falling when the top wall portion is lowered, as a preferred embodiment of the present invention, as shown in fig. 1, 2 and 4, the side wall portion 12 includes:
a plurality of stopper groups 4, wherein each stopper group 4 comprises an inner stopper 41 and an outer stopper 42 exposed from both side surfaces of the sidewall 12; wherein,
the bottom surface of the stopper group 4 is flush with the bottom surface of the sidewall part 12, the height of the inner stopper 41 is smaller than that of the sidewall part 12, and the height of the outer stopper 42 is greater than that of the sidewall part 12;
the top wall portion 13 is clamped to the top end of the side wall portion 12 through the stopper group 4.
Further, the sidewall 12 includes four equally spaced sets of stoppers 4. In the structure shown in fig. 1 and 4, the number of the limiting member groups specifically shown in the present invention is four, and it is understood that the number of the limiting members may be a plurality of limiting members uniformly arranged, and preferably four limiting members equidistantly arranged in consideration of economy and stability. As shown in fig. 4, when the sample container is cube-shaped, the four position-limiting members at equal distances can be arranged at four included angles.
In addition, the engagement between the top wall and the side wall may be in other manners, for example, as shown in fig. 3 and 5, as a preferred embodiment of the present invention, the side wall 12 includes a stepped hole 5 formed by an inner side surface of a top circumferential edge of the side wall 12 being recessed inward and fitting with the top wall 13; the top wall portion 13 is engaged with the top end of the side wall portion 12 through the stepped hole 5.
When the sample container has a cubic shape, the top wall portion and the side wall portion may be engaged with each other by inserting the top wall portion into the side wall portion, and specifically, as a preferred embodiment of the present invention, referring to fig. 6 and 7, the side wall portion 12 of the cubic housing includes:
a groove 6 formed by inwardly recessing the inside surface of the top circumference of the side wall portion 12 of the cubical casing, an
An opening 7 penetrating the inner and outer surfaces of one side wall 12 of the cubic housing and communicating with the recess 6;
the top wall 13 of the cubical casing is inserted through the opening 7 and is engaged with the top end of the side wall 12 of the cubical casing via the recess 6.
In order to ensure that the liquid cast product can freely enter the sample container and be injected into the debris void space, as a preferred embodiment of the invention, one or more of the bottom wall 11, the side wall 12 and the top wall 13 comprises a plurality of evenly arranged openings 3.
As shown in fig. 8 to 14, the structure specifically shows a cylindrical sample container in which the bottom wall portion is provided with an opening, the top wall portion and the bottom wall portion are both provided with openings, the side wall portion is provided with an opening, the side wall portion and the bottom wall portion are both provided with openings, the side wall portion and the top wall portion are both provided with openings, and the bottom wall portion, the side wall portion and the top wall portion are all provided with openings, and the top wall portion and the bottom wall portion of the cylindrical sample container are clamped by a limiting member;
the structures shown in fig. 15 to 21 specifically show a cylindrical sample container in which the bottom wall portion is provided with an opening, the top wall portion and the bottom wall portion are both provided with openings, the side wall portion is provided with an opening, the side wall portion and the bottom wall portion are both provided with openings, the side wall portion and the top wall portion are both provided with openings, and the bottom wall portion, the side wall portion and the top wall portion are all provided with openings, and the top wall portion and the bottom wall portion are clamped through a stepped hole; it should be understood by those skilled in the art that the shape of the various porous sample containers may also be a cube, and the connection mode of the top wall part and the bottom wall part of the cube sample container may also be clamping connection through a groove, and the invention is not described in detail herein.
Since most of the rock debris samples are in the form of millimeter-sized fine particles, the particle size is generally 1-5mm, and therefore, under the condition that the liquid casting freely enters the container, the aperture of the open pores 3 is 125-425 μm, i.e. 40-120 mesh, and more preferably 40 mesh (i.e. 425 μm) or 60 mesh (i.e. 250 μm) as a preferred embodiment of the present invention.
As the cylindrical glass tube of the high-temperature and high-pressure rock pore casting instrument in the market is mostly 27-29 mm in inner diameter and 290mm in length; in order to make the rock debris sample holding device suitable for various or most high-temperature and high-pressure rock pore casting instruments on the market, as a preferred embodiment of the invention, the diameter of the cylindrical shell is 20-25mm, and more preferably 25 mm; the height of the cylindrical shell is 4-10mm, more preferably 6 mm; the side length of the cubic shell is 20-25mm, and more preferably 20 mm; the height of the cubical casing is 4-10mm, more preferably 6 mm.
Furthermore, in order to increase the sealing performance of the container, as a preferred embodiment of the present invention, the joint of the top wall portion and the bottom wall portion is coated with glue.
As the cast piece is a basic means of oil-gas exploration, is widely applied in production and scientific research, the rock debris sample container serving as an intermediate link is used as an easily-consumed article and can be cut in the sample dividing process after the cast body is solidified, and high cost performance is required to meet the requirement, in addition, the cast body of a common high-temperature and high-pressure rock pore cast body instrument is configured at 70 ℃ and is gradually solidified at 180 ℃ at 100 plus material, so the temperature resistance and economic cost are comprehensively considered for manufacturing the rock debris sample container, and as a preferred implementation mode of the invention, the material of the shell is wood or organic glass (such as an acrylic plate and the like) so as to ensure the injection of the liquid cast body and the later-stage solidification.
As another aspect of the present invention, the present invention also provides a method for producing a rock debris cast body by using the above apparatus, comprising the steps of:
s101, selecting rock debris samples according to rock debris characteristics, placing the rock debris samples in a rock debris containing device, and placing the rock debris containing device in a glass test tube, wherein the glass test tube containing a plurality of cylindrical sample containing containers and the glass test tube containing a plurality of cubic sample containing containers are respectively shown in figures 22 and 23;
s102, preparing a casting body by adopting a standard rock slice making method, injecting the casting body into a glass test tube comprising a rock debris sample containing device, solidifying to obtain a casting sample, separating the casting sample from the glass test tube, and making a slice of the separated casting sample to obtain a rock debris casting body slice. Wherein, the standard rock preparation method is SY/T5913-2004, and it should be understood that the method is a conventional technical method, and the details are not repeated herein.
As a preferred embodiment of the present invention, the rock debris sample selected in step S101 is specifically selected according to rock debris sampling depth, rock debris uniformity and particle size; further, selecting rock debris products according to the sampling depth of the rock debris from shallow to deep; when selecting, the rock debris sample is poured on white paper and spread out, the main body rock debris components and the impurity conditions of the rock debris sample are firstly evaluated from the appearances such as shape, color and the like, then the rock debris sample with large particle size, clear edges and corners and sawtooth traces on the section is selected, 5-20 rock debris samples are placed in each sample container, and the specific number is based on the size of the rock debris.
As a preferred embodiment of the present invention, the step S101 of placing the rock debris sample in front of the rock debris holding device further comprises a step of preprocessing the rock debris sample; the pretreatment is to clean pollutants such as slurry, oil gas and asphalt in the sampling process by using absolute ethyl alcohol or chloroform reagent. It should be understood that the preprocessing method is a conventional technical method, and is not described herein in detail.
In a preferred embodiment of the present invention, the step S102 of injecting the casting into the glass test tube including the rock debris holding device and solidifying the casting to obtain the casting is performed in a high temperature and high pressure rock pore cast apparatus. It should be understood that the high temperature and high pressure rock pore cast apparatus is a conventional commercially available apparatus and will not be described in detail herein.
The present invention will be further described with reference to the following examples.
Example 1
The embodiment provides a method for preparing a rock debris casting body, which comprises the following steps:
1) pretreating a rock debris sample: the rock debris sample used in the embodiment is a rock debris sample of a depression detecting 1X aotao majia ditch group in Ji of China Petroleum North China oilfield division;
the method specifically comprises the following steps:
i) cleaning: cleaning pollutants such as mud, oil gas, asphalt and the like in the sampling process by using an absolute ethyl alcohol reagent;
ii) drying: placing the cleaned rock debris sample in a glass container, and baking the glass container at the temperature of 110 ℃ for 12 hours;
iii) screening: screening the dried rock debris samples according to rock debris characteristics (including rock debris sampling depth, rock debris uniformity and rock debris particle size), wherein the selected rock debris samples are smaller and mostly sub-millimeter-micron-sized, so that the rock debris samples are poured on standard A4 white paper during selection, spread out, and firstly, main rock debris components and impurity conditions of the rock debris samples are evaluated from the appearances of shape, color and the like, and then, the rock debris samples with large particle size, clear edges and corners and sawtooth traces on the cross section are selected; uniformly mixing the rest rock debris samples, and taking a proper amount of rock debris samples at 1/4 by adopting a quartering method;
2) selecting 20 cylindrical sample containers shown in figure 14, putting the pretreated rock debris samples into each sample container, and fully spreading the bottom of each sample container; the two adjacent sample containers are separated by mica sheets to obtain a rock debris sample holding device; placing the rock debris sample containing device in a glass test tube;
3) preparing a cast body by adopting a standard rock flaking method (SY/T6103-94), which specifically comprises the following steps:
according to the mass ratio of 100: 15: 8: 1.2, weighing 6828 type epoxy resin, 501 type diluent, 594 type curing agent and oil-soluble blue coloring agent in sequence, and placing the materials into a constant-temperature water bath kettle at the temperature of 70 ℃ to be uniformly stirred to obtain a casting body;
placing a glass test tube containing a rock debris sample containing device in a vacuum system of a JS-4 type high-temperature high-pressure rock pore cast instrument, vacuumizing for 2 hours, and then injecting a cast body into the vacuum system; keeping the temperature for 1 hour after the temperature reaches 100 ℃, then heating to 160 ℃, and keeping the temperature for 1 hour; in the process, the pressure is kept between 25 and 30 MPa; obtaining a solidified rock debris cast sample after cooling;
4) separating the cast sample from the glass test tube, slicing the separated cast sample, grinding and polishing to obtain a rock debris cast body slice, and placing the rock debris cast body slice under an optical microscope to observe the structural characteristics of the rock, as shown in figures 25 to 28;
fig. 25 and 26 show the rock debris of the 1X aodovician majia ditch depression plan in a rock, in which the injection of cast bodies into fractures of the rock debris and the calcite filling during the formation of the fractures are visible;
fig. 27 and 28 show the rock debris of the 1X aodovician majia ditch depression in the wing, the development of powdery dolomite crystal intercrystalline pores can be seen, the injected cast body is filled (fig. 27), and gear scratches in the rock debris cause artificial cracks which are mostly a group of bent, short and straight cracks which are parallel to each other and are far from the natural cracks and extend to be distinct and fine (fig. 28).
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (10)
1. A method for preparing a rock debris casting body is characterized by comprising the following steps:
1) pretreating a rock debris sample;
2) placing the pretreated rock debris sample in a rock debris containing device, and placing the rock debris containing device in a glass test tube;
3) preparing a casting body by adopting a standard rock slice making method, injecting the casting body into a glass test tube containing a rock debris sample containing device, and solidifying to obtain a cast sample;
4) and separating the cast sample from the glass test tube, and flaking the separated cast sample to obtain a rock debris cast body slice.
2. A method for producing a rock debris casting body according to claim 1, wherein the process of pretreating the rock debris sample in the step 1) specifically comprises the following steps: the rock debris samples were subjected to pre-treatment including washing, drying and screening.
3. A rock debris casting body manufacturing method according to claim 1, wherein the rock debris sample holding device in the step 2) comprises a plurality of sample holding containers;
the flourishing appearance container includes:
a housing having an interior chamber for containing debris; the housing includes:
a bottom wall portion;
a side wall portion integrally extending upward from a peripheral edge of the bottom wall portion; and
the top wall part is detachably connected with the opening at the top end of the side wall part; wherein,
the bottom wall portion inner side surface, the side wall portion inner side surface and the top wall portion inner side surface together constitute an inner cavity for accommodating debris;
one or more of the bottom wall portion, the side wall portion and the top wall portion includes at least one aperture;
and a mica sheet is arranged between two adjacent sample containers.
4. A method for producing a cast rock fragment as claimed in claim 3, wherein the side wall portion includes:
the side wall part is provided with a plurality of side wall parts, and each side wall part is provided with a plurality of side wall parts; the bottom surface of the limiting member group is flush with the bottom surface of the side wall part, the height of the inner limiting member is smaller than that of the side wall part, and the height of the outer limiting member is larger than that of the side wall part;
the top wall part is clamped at the top end of the side wall part through the limiting piece group.
5. A method for producing a cast rock fragment as claimed in claim 3, wherein the side wall portion includes a stepped hole formed by an inner side surface of a top peripheral edge of the side wall portion being depressed inward to fit the top wall portion; the top wall part is clamped at the top end of the side wall part through the stepped hole.
6. A method of producing a rock debris cast body as claimed in claim 3, wherein the housing is a cylindrical housing or a cubical housing;
preferably, the cylindrical housing is sized to have a diameter of 20-25mm, more preferably 25 mm; a height of 4-10mm, more preferably 6 mm;
preferably, the cubical casing has a dimension of side length of 20-25mm, more preferably 20 mm; the height is 4-10mm, more preferably 6 mm.
7. A method for making a cast rock fragment as claimed in claim 6, wherein the side wall of the cubic housing includes:
a groove formed by inwardly recessing an inner side surface of a top circumference of a side wall portion of the cubic housing, an
An opening part which penetrates through the inner surface and the outer surface of one side of the side wall part of the cubic shell and is communicated with the groove;
the top wall part of the cubic shell is inserted from the opening part and is clamped at the top end of the side wall part of the cubic shell through the groove.
8. A method for producing a rock debris casting body according to claim 3, wherein the diameter of the open pores is 125 to 425 μm;
preferably, the joint of the top wall part and the bottom wall part is coated with glue;
preferably, the material of the shell is wood or organic glass.
9. A method for making a rock debris casting body according to claim 1, wherein the step 3) of injecting the casting body into the glass test tube containing the rock debris sample holding device and solidifying the casting body to obtain the casting sample comprises the following steps:
vacuumizing a glass test tube containing the rock debris sample containing device, and injecting a cast body into the glass test tube; heating and solidifying in a step-type heating mode under the pressure condition of 25-30MPa, and cooling to room temperature to obtain a cast sample;
wherein, the step-type heating mode is as follows: the temperature is raised to 100 ℃ and then kept constant for 1 hour, and then the temperature is raised to 160 ℃ and kept constant for 1 hour.
10. A rock debris sample containing device is characterized by comprising a plurality of sample containing containers;
the flourishing appearance container includes:
a housing having an interior chamber for containing debris; the housing includes:
a bottom wall portion;
a side wall portion integrally extending upward from a peripheral edge of the bottom wall portion; and
the top wall part is detachably connected with the opening at the top end of the side wall part; wherein,
the bottom wall portion inner side surface, the side wall portion inner side surface and the top wall portion inner side surface together constitute an inner cavity for accommodating debris;
one or more of the bottom wall portion, the side wall portion and the top wall portion includes at least one aperture;
and a mica sheet is arranged between two adjacent sample containers.
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