CN111650076A - Rock pore structure characterization method and device - Google Patents
Rock pore structure characterization method and device Download PDFInfo
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- CN111650076A CN111650076A CN202010641573.8A CN202010641573A CN111650076A CN 111650076 A CN111650076 A CN 111650076A CN 202010641573 A CN202010641573 A CN 202010641573A CN 111650076 A CN111650076 A CN 111650076A
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- 239000011435 rock Substances 0.000 title claims abstract description 141
- 239000011148 porous material Substances 0.000 title claims abstract description 49
- 238000012512 characterization method Methods 0.000 title claims abstract description 17
- 239000011162 core material Substances 0.000 claims abstract description 33
- 238000001514 detection method Methods 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 8
- 238000005070 sampling Methods 0.000 claims abstract description 6
- 238000012423 maintenance Methods 0.000 claims description 10
- 238000010586 diagram Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 230000003595 spectral effect Effects 0.000 claims description 2
- 238000009835 boiling Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000003208 petroleum Substances 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 10
- 238000003860 storage Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000239290 Araneae Species 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/088—Investigating volume, surface area, size or distribution of pores; Porosimetry
- G01N15/0893—Investigating volume, surface area, size or distribution of pores; Porosimetry by measuring weight or volume of sorbed fluid, e.g. B.E.T. method
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/36—Analysing materials by measuring the density or specific gravity, e.g. determining quantity of moisture
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N2015/0846—Investigating permeability, pore-volume, or surface area of porous materials by use of radiation, e.g. transmitted or reflected light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N2015/0866—Sorption
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- General Health & Medical Sciences (AREA)
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Abstract
The invention discloses a method and a device for characterizing a rock pore structure, belonging to the technical field of petroleum exploration, and comprising the following steps; gather the rock sample through the sampling, prepare the rock core, judge whether the inside material of rock receives water to influence when the rock core material can receive water to influence, pass through rock slicer section with the rock, prepare the sample, put into laser scanner with the rock sample, laser scanner scans the video image of section sample, through handling sample video image, obtain the two-dimensional image of hole, establish three-dimensional model through the two-dimensional image to the hole, obtain the three-dimensional structure picture of rock and hole, through three-dimensional structure picture, the calculation obtains rock porosity and density. This rock pore structure characterization method and device not only can detect the rock pore through multiple mode, and detection effect is better, and the accuracy is higher, can detect the rock kind that traditional boiling method can't detect moreover, and application scope is wider.
Description
Technical Field
The invention relates to the technical field of oil exploration, in particular to a rock pore structure characterization method and device.
Background
With the development of oil and gas exploration, carbonate rock, compact sandstone and other complex pore reservoirs gradually become the key points and difficulties of exploration and production in China. The reservoir has the characteristics of strong heterogeneity, various rock types, large pore size change, variable pore shapes and the like, and the conventional geophysical prediction method for the oil and gas reservoir faces unprecedented challenges, so that the pore of the rock needs to be detected. But current check out test set often the detection mode single, and the accuracy is not high, and the hole can change when partial rock structure meets water moreover, and traditional boiling method device can not be fine detect, and application scope is narrower.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The invention aims to provide a rock pore structure characterization method and device, which can detect rock pores in multiple modes, have better detection effect and higher accuracy, can detect rock types which cannot be detected by a traditional boiling method, and have wider application range.
To solve the above technical problem, according to an aspect of the present invention, the present invention provides the following technical solutions:
a rock pore structure characterization method and device, comprising: the method comprises the following steps:
s1: sampling and collecting a rock sample to prepare a rock core;
s2: judging whether the internal material of the rock is affected by water
When the rock core material can receive water influence:
(1) slicing the rock by a rock slicer to prepare a sample;
(2) putting the rock sample into a laser scanner, and scanning a video image of the slice sample by the laser scanner;
(3) processing a sample video image to obtain a two-dimensional image of a pore;
(4) establishing a three-dimensional model for the two-dimensional image of the pore to obtain a three-dimensional structure diagram of the rock and the pore;
(5) calculating to obtain the porosity and density of the rock through a three-dimensional structure diagram;
when the core material is not affected by water;
(1) preventing the core sample from being placed on a detection frame, and detecting the weight of the sample in the air;
(2) placing the water-absorbed rock core sample on a detection frame, and detecting the weight of the sample in the air after water absorption;
(3) placing the rock core sample after water absorption on an underwater hanging basket, and obtaining detection results of density and porosity by a rock densimeter;
s3: and transmitting the data of the detection result to a display module for displaying. .
As a preferred scheme of the rock pore structure characterization method and device, the method comprises the following steps: including the cabinet body, rock densimeter, rock slicer, laser scanner and display screen, the rock densimeter is installed in the outside top left side of the cabinet body, the rock slicer is installed to the inside lower half of the cabinet body, laser scanner is installed to the outside top right side of the cabinet body, the display screen is installed on laser scanner's top.
As a preferred scheme of the rock pore structure characterization method and device, the method comprises the following steps: the improved cabinet is characterized in that a maintenance plate is installed on the upper half part of the front wall outside the cabinet body, a sealing layer is installed on the side wall of the maintenance plate, a handrail is installed in the middle of the left side wall outside the cabinet body, an anti-skidding sleeve is installed on the handrail, support columns are installed at four corners of the bottom of the cabinet body, and wheels are movably connected to the bottom of the support columns.
As a preferred scheme of the rock pore structure characterization method and device, the method comprises the following steps: the rock densimeter is characterized in that a detection frame is installed at the top end of the rock densimeter, a turning plate is movably connected to one side of the top end of the detection frame, an object placing groove is formed in the middle of the top end of the turning plate, a buckling groove is formed in the middle of the front side wall of the turning plate, and an underwater hanging basket is arranged inside the detection frame.
As a preferred scheme of the rock pore structure characterization method and device, the method comprises the following steps: the feeding plate is installed in the upper right corner of the outer front wall of the rock slicing machine, and the handle is installed in the middle of the front wall of the feeding plate.
As a preferred scheme of the rock pore structure characterization method and device, the method comprises the following steps: the processing in step S2 is to respectively calibrate the distribution ranges of effective pores and micropores by using a spectrum separation method.
As a preferred scheme of the rock pore structure characterization method and device, the method comprises the following steps: in step S2, the porosity is equal to the volume of the effective pores/the volume of the rock skeleton x 100%.
Compared with the prior art: the method comprises the steps that a worker collects a rock sample through sampling, prepares a rock core, judges whether the internal material of the rock is influenced by water or not, and slices the rock through a rock slicer when the material of the rock core is influenced by water to prepare the sample; when the rock core material can not receive water influence, prevent the rock core sample on the testing stand, detect sample weight in the air, place the rock core sample after absorbing water on the testing stand, detect sample weight in the air after absorbing water, place the rock core sample after absorbing water on the aquatic basket, the rock densimeter obtains the testing result of density and porosity, data transmission with the testing result shows on the display module, this rock pore structure representation method and device, not only can detect the rock pore through multiple mode, the detection effect is better, the accuracy is higher, and can detect the rock type that traditional boiling method can't detect, application scope is wider.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise. Wherein:
FIG. 1 is a top plan view of the rock densitometer of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a flow chart of the present invention.
In the figure: 100 cabinets, 110 maintenance boards, 120 sealing layers, 130 handrails, 131 anti-slip sleeves, 140 support columns, 141 wheels, 200 rock densitometers, 210 detection racks, 211 turning plates, 212 storage tanks, 213 buckle-pull tanks, 220 water hanging baskets, 300 rock slicers, 310 feed plates, 320 handles, 400 laser scanners, 500 display screens.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and it will be apparent to those of ordinary skill in the art that the present invention may be practiced without departing from the spirit and scope of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Next, the present invention will be described in detail with reference to the drawings, and in the detailed description of the embodiments of the present invention, the cross-sectional views illustrating the structure of the device are not enlarged partially according to the general scale for convenience of illustration, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The invention provides a rock pore structure characterization method and device, which can detect rock pores in various ways, have better detection effect and higher accuracy, can detect rock types which cannot be detected by a traditional boiling method, have wider application range, and refer to fig. 1, 2 and 3, and comprise the following steps:
s1: sampling and collecting a rock sample to prepare a rock core;
s2: judging whether the internal material of the rock is affected by water
When the rock core material can receive water influence:
(1) slicing the rock by a rock slicer 300 to prepare a sample;
(2) placing the rock sample into a laser scanner 400, the laser scanner 400 scanning a video image of the sliced sample;
(3) processing a sample video image to obtain a two-dimensional image of a pore;
(4) establishing a three-dimensional model for the two-dimensional image of the pore to obtain a three-dimensional structure diagram of the rock and the pore;
(5) calculating to obtain the porosity and density of the rock through a three-dimensional structure diagram;
when the core material is not affected by water;
(1) the core sample is prevented from being placed on the test rack 210, and the weight of the sample in the air is tested;
(2) placing the water-absorbed rock core sample on a detection frame 210, and detecting the weight of the sample in the air after water absorption;
(3) placing the water-absorbed rock core sample on an underwater hanging basket 220, and obtaining detection results of density and porosity by a rock densimeter 200;
s3: transmitting the data of the detection result to a display module for displaying;
referring again to fig. 1 and 2, the cabinet comprises a cabinet 100, a rock densitometer 200, a rock slicer 300, a laser scanner 400 and a display screen 500, wherein the rock densitometer 200 is installed on the left side of the outer top end of the cabinet 100, the rock slicer 300 is installed on the lower inner half of the cabinet 100, the laser scanner 400 is installed on the right side of the outer top end of the cabinet 100, the display screen 500 is installed on the top end of the laser scanner 400, specifically, the rock densitometer 200 is connected to the left side of the outer top end of the cabinet 100 through a bolt thread, the rock slicer 300 is connected to the lower inner half of the cabinet 100 through a bolt thread, the laser scanner 400 is connected to the right side of the outer top end of the cabinet 100 through a bolt thread, the display screen 500 is connected to the top end of the laser scanner 400 through a bolt thread, the cabinet 100 is used for accommodating and protecting internal, the rock slicer 300 is used for slicing the rock sample, the laser scanner 400 is used for scanning image information of the rock sample slice, and the display screen 500 is used for displaying a detection result;
referring to fig. 1 and 2 again, a maintenance plate 110 is installed on the upper half portion of the outer front wall of the cabinet 100, a sealing layer 120 is installed on the side wall of the maintenance plate 110, a handrail 130 is installed in the middle of the outer left side wall of the cabinet 100, an anti-slip sleeve 131 is installed on the handrail 130, support columns 140 are installed at four corners of the bottom end of the cabinet 100, wheels 141 are movably connected to the bottom ends of the support columns 140, specifically, the upper half portion of the outer front wall of the cabinet 100 is connected with the maintenance plate 110 through bolt threads, the sealing layer 120 is bonded and connected to the side wall of the maintenance plate 110, the handrail 130 is welded in the middle of the outer left side wall of the cabinet 100, the anti-slip sleeve 131 is sleeved on the handrail 130, the support columns 140 are connected to the four corners of the bottom end of the cabinet 100 through bolt threads, the wheels 141 are rotatably connected to the bottom end of the support columns, the sealing layer 120 is used for sealing the joint of the maintenance board 110 and the cabinet 100, the handrail 130 is used for pushing the device to move, the anti-slip sleeve 131 is used for conveniently grasping the handrail 130, the supporting column 140 is used for connecting the wheels 141 and the cabinet 100, and the wheels 141 are used for enabling the device to move;
referring to fig. 1 and 2 again, a detection frame 210 is installed at the top end of the rock densimeter 200, a turning plate 211 is movably connected to one side of the top end of the detection frame 210, a storage groove 212 is formed in the middle of the top end of the turning plate 211, a buckle groove 213 is formed in the middle of the front side wall of the turning plate 211, an underwater hanging flange 220 is arranged inside the detection frame 210, specifically, the top end of the rock densimeter 200 is connected with the detection frame 210 in a buckle mode, the turning plate 211 is connected to one side of the top end of the detection frame 210 through a hinge, the storage groove 212 is formed in the middle of the top end of the turning plate 211, a buckle groove 213 is formed in the middle of the front side wall of the turning plate 211, an underwater hanging flange 220 is arranged inside the detection frame 210, the detection frame 210 is used for providing a platform for placing rocks, the turning plate 211 is used for placing samples into the underwater hanging, the submerged spider 220 is used to keep the sample in the water.
Referring again to fig. 1 and 2, a feeding plate 310 is installed at the upper right corner of the outer front wall of the rock slicer 300, a handle 320 is installed in the middle of the front wall of the feeding plate 310, specifically, the feeding plate 310 is welded at the upper right corner of the outer front wall of the rock slicer 300 through a hinge, the handle 320 is welded in the middle of the front wall of the feeding plate 310, the feeding plate 310 is used for conveniently opening and placing rocks into the rock slicer 300, and the handle 320 is used for conveniently pulling the feeding plate 310.
Referring again to fig. 3, the processing in step S2 is performed by using a spectral separation method to respectively calibrate the distribution ranges of effective pores and microporosities.
Referring again to fig. 3, in step S2, the porosity is equal to the volume of the effective pores/the volume of the rock skeleton x 100%
When the rock core sampler is used specifically, a worker collects a rock sample through sampling, prepares a rock core, judges whether the material in the rock is influenced by water or not, and when the material of the rock core is influenced by water, slices the rock through the rock slicer 300 to prepare the sample, puts the rock sample into the laser scanner 400, scans a video image of the sliced sample through the laser scanner 400, processes the video image of the sample to obtain a two-dimensional image of a pore space, establishes a three-dimensional model for the two-dimensional image of the pore space to obtain a three-dimensional structure diagram of the rock and the pore space, and calculates the porosity and the density of the rock through the three-dimensional structure diagram; when the rock core material can not receive water influence, prevent the rock core sample to the testing stand 210 on, sample weight in the detection air, place the rock core sample after absorbing water on the testing stand 210, detect sample weight in the air after absorbing water, place the rock core sample after absorbing water on aquatic hanging flower 220, rock densimeter 200 obtains the testing result of density and porosity, shows on data transmission to the display module of testing result.
While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the disclosed embodiments of the invention may be used in any combination, provided that no structural conflict exists, and the combinations are not exhaustively described in this specification merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (7)
1. A rock pore structure characterization method and device are characterized by comprising the following steps:
s1: sampling and collecting a rock sample to prepare a rock core;
s2: judging whether the internal material of the rock is affected by water
When the rock core material can receive water influence:
(1) slicing the rock by a rock slicer (300) to prepare a sample;
(2) placing the rock sample into a laser scanner (400), the laser scanner (400) scanning a video image of the sliced sample;
(3) processing a sample video image to obtain a two-dimensional image of a pore;
(4) establishing a three-dimensional model for the two-dimensional image of the pore to obtain a three-dimensional structure diagram of the rock and the pore;
(5) calculating to obtain the porosity and density of the rock through a three-dimensional structure diagram;
when the core material is not affected by water;
(1) preventing the core sample from the detection frame (210), and detecting the weight of the sample in the air;
(2) placing the water-absorbed rock core sample on a detection frame (210), and detecting the weight of the sample in the air after water absorption;
(3) placing the rock core sample after water absorption on an underwater hanging basket (220), and obtaining detection results of density and porosity by a rock densimeter (200);
s3: and transmitting the data of the detection result to a display module for displaying.
2. The rock pore structure characterization method and device according to claim 1, characterized in that the rock pore structure characterization method and device comprises a cabinet body (100), a rock densitometer (200), a rock slicer (300), a laser scanner (400) and a display screen (500), wherein the rock densitometer (200) is installed on the left side of the outer top end of the cabinet body (100), the rock slicer (300) is installed on the lower inner half of the cabinet body (100), the laser scanner (400) is installed on the right side of the outer top end of the cabinet body (100), and the display screen (500) is installed on the top end of the laser scanner (400).
3. The rock pore structure characterization method and device according to claim 2, wherein a maintenance plate (110) is installed on the upper half of the outer front wall of the cabinet body (100), a sealing layer (120) is installed on the side wall of the maintenance plate (110), a handrail (130) is installed in the middle of the outer left side wall of the cabinet body (100), an anti-slip sleeve (131) is installed on the handrail (130), support columns (140) are installed at four corners of the bottom end of the cabinet body (100), and wheels (141) are movably connected to the bottom ends of the support columns (140).
4. The method and the device for characterizing the pore structure of the rock according to claim 2, wherein a detection frame (210) is installed at the top end of the rock densitometer (200), a turning plate (211) is movably connected to one side of the top end of the detection frame (210), an object placing groove (212) is formed in the middle of the top end of the turning plate (211), a buckle and pull groove (213) is formed in the middle of the front side wall of the turning plate (211), and an underwater hanging flange (220) is arranged inside the detection frame (210).
5. The method and device for characterizing the pore structure of the rock according to claim 2, wherein a feeding plate (310) is installed at the upper right corner of the front wall of the outer part of the rock slicer (300), and a handle (320) is installed in the middle of the front wall of the feeding plate (310).
6. The method and apparatus for characterizing a rock pore structure according to claim 2, wherein the step S2 is performed by using a spectral separation method to respectively calibrate the distribution ranges of effective pores and microporosities.
7. The method and apparatus for characterizing a rock pore structure according to claim 2, wherein in step S2, the porosity is equal to the volume of the effective pore space/the volume of the rock skeleton x 100%.
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| CN202010641573.8A CN111650076A (en) | 2020-07-06 | 2020-07-06 | Rock pore structure characterization method and device |
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| CN202010641573.8A CN111650076A (en) | 2020-07-06 | 2020-07-06 | Rock pore structure characterization method and device |
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