CN108254401B - Method for testing rock by using nuclear magnetic resonance spectrometer - Google Patents
Method for testing rock by using nuclear magnetic resonance spectrometer Download PDFInfo
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- CN108254401B CN108254401B CN201810036971.XA CN201810036971A CN108254401B CN 108254401 B CN108254401 B CN 108254401B CN 201810036971 A CN201810036971 A CN 201810036971A CN 108254401 B CN108254401 B CN 108254401B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N24/00—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
- G01N24/08—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
- G01N24/081—Making measurements of geologic samples, e.g. measurements of moisture, pH, porosity, permeability, tortuosity or viscosity
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Abstract
The invention discloses a method for testing rocks by using a nuclear magnetic resonance spectrometer, which comprises a bed loading body, wherein a long strip arc-shaped groove is arranged on the bed loading body, scales and scale numbers are marked on the edge of one side in the long strip arc-shaped groove along the axial direction, a sliding strip capable of sliding along the axial direction of the long strip arc-shaped groove is arranged on the side, marked with the scales, in the long strip arc-shaped groove, the bottom end face of the sliding strip extends to the center of the bottom of the long strip arc-shaped groove and is superposed with the vertical surface where the central line of the bottom of the long strip arc-shaped groove is positioned, and a diameter horizontal bubble is arranged at the center of the bottom of one end of the long strip arc-shaped groove. The invention also discloses a use method of the rock nuclear magnetic resonance instrument containing the sample carrying bed. The invention is particularly suitable for testing and analyzing the same rock sample under different testing steps by adopting the rock nuclear magnetic resonance spectrometer, and has the characteristics of convenient and quick operation, strong data result contrast and the like.
Description
Technical Field
The invention belongs to the technical field of rock physical parameter testing and analysis, and particularly relates to a method for testing rocks by using a nuclear magnetic resonance spectrometer.
Background
In recent years, the nuclear magnetic resonance technology has become a common means for indoor rock physical parameter testing due to the advantages of high detection speed, no damage to samples, accurate results and the like, and is particularly favored in rock pore space measurement and analysis and nuclear magnetic resonance imaging tests. When the nuclear magnetic resonance instrument is used for testing, firstly, a rock sample is placed on a carrying bed with a long arc-shaped groove, then the carrying bed and the sample are placed into a coil box, the coil box is connected with a circuit and placed in a magnetic field, and then the nuclear magnetic resonance test is completed. In the experimental process, the same sample is often required to be subjected to a plurality of testing steps so as to obtain the nuclear magnetic resonance image testing results under different conditions and at different times, and then the comparison and analysis are carried out. The existing sample carrying bed and the test method have errors, which are mainly shown in the following steps: carry the bed to be rectangular arc wall, the rock specimen is the cylinder, carries the diameter of bed to be slightly more than the diameter of rock specimen usually, therefore the rock specimen is placed on carrying the bed, rolls easily, can not guarantee that the sample is placed at the same position of carrying bed axial direction when testing at every turn. Therefore, the different spatial positions of the samples on the loading bed lead to different results of the nuclear magnetic resonance images obtained after different testing steps, which is not beneficial to visual comparison and affects the analysis of the nuclear magnetic resonance testing results.
Disclosure of Invention
The invention aims to provide a method for testing rocks by using a nuclear magnetic resonance spectrometer, which is convenient and quick to operate and has strong data result contrast.
In order to solve the technical problem, the sample carrying bed of the rock nuclear magnetic resonance spectrometer comprises a carrying bed body, wherein a long arc-shaped groove is formed in the carrying bed body, scales and scale numbers are marked at the edge of one side in the long arc-shaped groove along the axial direction, a sliding strip capable of sliding along the axial direction of the long arc-shaped groove is installed on one side, marked with the scales, in the long arc-shaped groove, the bottom end face of the sliding strip extends to the center of the bottom of the long arc-shaped groove and coincides with the vertical face where the central line of the bottom of the long arc-shaped groove is located, and a diameter horizontal bubble is arranged at the center of the bottom of one end of the long arc-shaped groove.
Furthermore, be equipped with axially extended guide way in the rectangular arc wall, be equipped with on the strip that slides with guide way matched with guide block.
Further, the strip that slides is convex and hugs closely rectangular arc wall, the top of the strip that slides with rectangular arc wall top end face parallel and level.
Correspondingly, the invention also discloses a method for testing the rock by using the nuclear magnetic resonance spectrometer (the method for testing the rock by using the nuclear magnetic resonance spectrometer comprising the bed), firstly, drawing a line on the end surface of one end of the cylindrical rock sample and marking a diameter line; placing the cylindrical rock sample in the long arc-shaped groove, sliding the sliding strip to enable the sliding strip to be close to the cylindrical rock sample, ensuring that the diameter line of the marked rock is located in a plane where the bottom end face of the sliding strip is located, and recording the scale number; the bed loading body loaded with the rock sample is placed in a coil box in a nuclear magnetic resonance instrument for testing, and the water bubbles in the diameter horizontal bubbles are ensured to be centered during testing.
The invention is suitable for testing the cylindrical rock sample by adopting the rock nuclear magnetic resonance spectrometer, and realizes the purposes of convenient and quick operation, strong data result contrast and the like.
The invention has the advantages that when the rock nuclear magnetic resonance spectrometer is used for testing, the rock sample is fixedly placed on the carrying bed through the scales and the sliding strip, and the specific scale number is recorded; the diameter horizontal bubble is used for ensuring that the carrier bed is horizontally placed in the coil box, so that the spatial positions of the same sample in different measurement steps are the same, and the obtained nuclear magnetic resonance images are subjected to comparative analysis.
In summary, the invention provides a rock nuclear magnetic resonance instrument sample bed and a test method, wherein the rock nuclear magnetic resonance instrument sample bed is used for carrying out the same cylindrical rock sample by using a rock nuclear magnetic resonance instrument, and has the advantages of simple and rapid operation and strong data result contrast under different test step conditions.
Drawings
FIG. 1 is a schematic diagram of a sample bed and coil box of a rock NMR spectrometer according to the present invention;
FIG. 2 is a top view of a sample bed of the rock NMR apparatus of the present invention;
FIG. 3 is a semi-sectional view of a sample bed of a rock NMR spectrometer according to the invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1-3, a rock nuclear magnetic resonance spectrometer sample carries bed, including carrying a bed body 1, it is equipped with rectangular arc wall 2 on the bed body 1 to carry, one side edge department has scale 3 and scale number 4 along the axial sign in rectangular arc wall 2, the strip 5 that slides that can follow 2 axial slip of rectangular arc wall is installed to one side that the inherent sign of rectangular arc wall 2 has scale 3, 5 bottom end faces of the strip that slides extend to 2 bottom central authorities of rectangular arc wall, and coincide with the vertical face at 6 places of 2 bottom central lines of rectangular arc wall, 2 one end bottom central authorities of rectangular arc wall locate to be equipped with diameter horizontal bubble 7. Whether the carrier bed body 1 is horizontally placed in the coil box 8 or not is observed through the diameter horizontal bubble 7, and the test needs to ensure that the diameter horizontal bubble 7 is horizontally centered.
In this embodiment, be equipped with axially extended guide way 9 in rectangular arc wall 2, be equipped with on the strip that slides 5 with guide way 9 assorted guide block.
In this embodiment, the sliding strip 5 is arc-shaped and clings to the long arc-shaped groove 2, and the top of the sliding strip 5 is flush with the top end face of the long arc-shaped groove 2.
A method for testing rock by using a nuclear magnetic resonance spectrometer, when in testing, firstly, a diameter line is marked by drawing a line on the end face of one end of a cylindrical rock sample 10; placing the cylindrical rock sample 10 in the long arc-shaped groove 2, sliding the sliding strip 5 to enable the sliding strip to tightly abut against and fix the cylindrical rock sample 10, ensuring that the diameter line of the marked rock is located in a plane where the bottom end face of the sliding strip 5 is located, and recording the scale degree; the load carries the bed body 1 of rock specimen to put into coil box 8 in, test can, guarantee during the test that the blister in the horizontal bubble of diameter 7 is placed in the middle.
The above examples are merely illustrative for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Nor is it intended to be exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (3)
1. A method of testing rock using a nuclear magnetic resonance spectrometer, the method comprising: the sample carrying bed of the nuclear magnetic resonance spectrometer comprises a carrying bed body, wherein a strip arc-shaped groove is arranged on the carrying bed body, a scale and scale numbers are marked on one side edge in the strip arc-shaped groove along the axial direction, a sliding strip capable of sliding along the axial direction of the strip arc-shaped groove is installed on one side, marked with the scale, in the strip arc-shaped groove, the bottom end face of the sliding strip extends to the center of the bottom of the strip arc-shaped groove and is superposed with the vertical surface of the central line of the bottom of the strip arc-shaped groove, and a diameter horizontal bubble is arranged at the center of the bottom of one end of the strip arc-shaped groove;
firstly, drawing a line on the end face of one end of a cylindrical rock sample to mark a diameter line; placing the cylindrical rock sample in the long arc-shaped groove, sliding the sliding strip to enable the sliding strip to be close to the cylindrical rock sample, ensuring that the diameter line of the marked rock is located in a plane where the bottom end face of the sliding strip is located, and recording the scale number; the bed loading body loaded with the rock sample is placed in a coil box in a nuclear magnetic resonance instrument for testing, and the water bubbles in the diameter horizontal bubbles are ensured to be centered during testing.
2. The method of claim 1, wherein: the strip arc-shaped groove is internally provided with a guide groove extending axially, and the sliding strip is provided with a guide block matched with the guide groove.
3. The method according to claim 1 or 2, characterized in that: the sliding strip is arc-shaped and clings to the strip arc-shaped groove, and the top of the sliding strip is flush with the top end face of the strip arc-shaped groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810036971.XA CN108254401B (en) | 2018-01-15 | 2018-01-15 | Method for testing rock by using nuclear magnetic resonance spectrometer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810036971.XA CN108254401B (en) | 2018-01-15 | 2018-01-15 | Method for testing rock by using nuclear magnetic resonance spectrometer |
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| Publication Number | Publication Date |
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| CN108254401A CN108254401A (en) | 2018-07-06 |
| CN108254401B true CN108254401B (en) | 2022-01-18 |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1655617B1 (en) * | 2004-10-29 | 2011-10-12 | Green Imaging Technologies Inc. | Methods and apparatus for measuring capillary pressure in a sample |
| CN102338759B (en) * | 2010-07-14 | 2014-08-06 | 中国石油天然气股份有限公司 | Full-diameter nuclear magnetic resonance rock sample analyzer standard sample |
| CN201965077U (en) * | 2010-12-17 | 2011-09-07 | 中国石油天然气股份有限公司 | Rock core CT scanning fixing device |
| KR101171736B1 (en) * | 2012-01-18 | 2012-08-07 | 한국지질자원연구원 | A device for measuring core sample |
| US10048336B2 (en) * | 2013-09-05 | 2018-08-14 | Saudi Arabian Oil Company | Tri-axial NMR test instrument |
| CN206020254U (en) * | 2016-08-20 | 2017-03-15 | 青岛海洋地质研究所 | The shallow rock drilling heart camera arrangement of Marine Geology |
| CN107037129B (en) * | 2017-05-16 | 2023-04-25 | 长江大学 | Rock anisotropy measurement clamp and measurement method thereof |
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