CN212674071U - Expansion tester - Google Patents
Expansion tester Download PDFInfo
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- CN212674071U CN212674071U CN202022049675.9U CN202022049675U CN212674071U CN 212674071 U CN212674071 U CN 212674071U CN 202022049675 U CN202022049675 U CN 202022049675U CN 212674071 U CN212674071 U CN 212674071U
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- sealing plug
- box
- liquid injection
- test
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Abstract
The utility model discloses an inflation tester mainly relates to a test instrument. Comprises a test chamber and a liquid injection chamber; the liquid injection box injects drilling fluid into an expansion cavity of the test box through a liquid injection thin tube, and the test box comprises a top cover, a transparent box cylinder and a bottom cover; a pressurizing port and a pressurizing pipeline are arranged on the sealing plug cap on the top cover; a distance measuring cylinder is arranged in the center of the sealing plug cap, and a leveling pressing plate is arranged at the bottom of a piston rod of the distance measuring cylinder; the top surface of the leveling pressing plate is provided with a mirror surface column; the sealing plug cap is provided with an infrared distance meter, and a probe of the infrared distance meter is aligned with the mirror surface column. The beneficial effects of the utility model reside in that: it adopts infrared distance meter to replace current displacement sensor, can be to the more accurate measurement of the inflation displacement before and after the inflation. And the temperature and pressure environment in the expansion cavity can be simulated according to the temperature and pressure data of the underground mudstone, so that the stability of the test result is greatly improved.
Description
Technical Field
The utility model relates to a test instrument specifically is inflation tester.
Background
The water absorption and expansion of shale in the formation during the drilling process are important factors causing the instability of the well wall. It is necessary to study and evaluate the effect of drilling fluids on the magnitude of formation swelling.
The existing expansion tester has a simple structure, namely, a dial indicator is used for measuring under the conditions of normal temperature and normal pressure, and the expansion performance of underground mudstone cannot be truly reflected. And the zero point of the internal displacement sensor is only set by visual inspection with the outside scale mark, so that the experimental result is inaccurate.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an inflation tester, it adopts infrared distance meter to replace current displacement sensor, can be to the more accurate measurement of inflation displacement around the inflation. And the temperature and pressure environment in the expansion cavity can be simulated according to the temperature and pressure data of the underground mudstone, so that the stability of the test result is greatly improved.
The utility model discloses a realize above-mentioned purpose, realize through following technical scheme:
the expansion tester comprises a test box and a liquid injection box; the liquid injection box injects drilling fluid into an expansion cavity of the test box through a liquid injection thin tube, and the test box comprises a top cover, a transparent box cylinder and a bottom cover; a pressurizing port and a pressurizing pipeline are arranged on the sealing plug cap on the top cover; a distance measuring cylinder is arranged in the center of the sealing plug cap, and a leveling pressing plate is arranged at the bottom of a piston rod of the distance measuring cylinder; the top surface of the leveling pressing plate is provided with a mirror surface column; the sealing plug cap is provided with an infrared distance meter, and a probe of the infrared distance meter is aligned with the mirror surface column.
And the sealing plug cap is provided with a temperature sensor and a spiral heating pipe.
Contrast prior art, the beneficial effects of the utility model reside in that:
this device adopts infrared distancer to replace current displacement sensor, can be to the more accurate measurement of the inflation displacement before and after the inflation. And can adopt pressurization mouth and pressurization pipeline according to the warm-pressing data of mud rock in the pit, temperature sensor and heliciform heating pipe simulate expansion intracavity temperature pressure environment to improve the stability of test result greatly.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Reference numerals shown in the drawings:
1. a test chamber; 2. a liquid injection tank; 3. a liquid injection tubule; 4. an expansion chamber; 5. a top cover; 6. a transparent canister; 7. a bottom cover; 8. a sealing plug cap; 9. a pressurizing port; 10. a pressurized conduit; 11. a distance measuring cylinder; 12. a piston rod; 13. leveling the pressing plate; 14. a mirror surface pillar; 15. an infrared range finder; 16. a temperature sensor; 17. a spiral heating pipe.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope defined in the present application.
Inflation tester, major structure include proof box 1 and annotate liquid case 2, annotate liquid case 2 and inject the drilling fluid through annotating liquid tubule 3 into in 4 inflation chambeies of proof box 1. The test box 1 comprises a top cover 5, a transparent box cylinder 6 and a bottom cover 7; the sealing plug cap 8 on the top cover 5 is provided with a pressurizing port 9 and a pressurizing pipeline 10, the center of the sealing plug cap 8 is provided with a distance measuring cylinder 11, the bottom of a piston rod 12 of the distance measuring cylinder 11 is provided with a leveling pressing plate 13, and the top surface of the leveling pressing plate 13 is provided with a mirror surface column 14. An infrared distance meter 15, a temperature sensor 16 and a spiral heating pipe 17 are arranged on the sealing plug cap 8, and a probe of the infrared distance meter 15 is aligned with the mirror surface column 14.
The using method comprises the following steps:
before the test, firstly, the piston rod 12 of the distance measuring cylinder 11 extends to make the leveling plate contact with the sample, and then the sample in the expansion cavity 4 is leveled. The distance between the mirror-surface column 14 and the bottom surface of the leveling plate is X, and then the infrared distance meter 15 is turned on, and the infrared ray from the infrared distance meter 15 is irradiated onto the mirror-surface column 14 to measure the pre-test distance L1, thereby obtaining the distance L1+ X between the sample before swelling and the bottom surface of the sealing plug cap 8.
And then simulating the temperature and pressure environment in the expansion cavity 4 according to the temperature and pressure data of the underground mudstone, wherein the pressurizing port 9 and the pressurizing pipeline 10 are used for adjusting the pressure value in the expansion cavity 4, and the temperature sensor 16 and the spiral heating pipe 17 are used for adjusting the temperature value.
Then, the drilling fluid is injected into the expansion cavity 4 by using the fluid injection box 2, the sample expands after meeting water, and the expansion displacement indicates the expansion amount, so that the expansion displacement can be accurately calculated to better obtain the test result of the expansion amount.
After the test is completed, the piston rod 12 of the ranging cylinder 11 is slowly extended until the leveling plate is just in contact with the sample after expansion, and then the infrared distance meter 15 is turned on, and the infrared ray of the infrared distance meter 15 is irradiated onto the mirror-surface column 14 to measure the distance L2 before the test, thereby obtaining the distance L2+ X between the sample before expansion and the bottom surface of the sealing plug cap 8.
By using the distance measuring principle and the distance measuring method, the accuracy of the infrared distance measuring instrument 15 is higher than that of visual measurement. The expansion displacement a is (L2+ X) - (L1+ X) ═ L2-L1. Therefore, the measurement precision of the expansion displacement is improved, and the stability of the test result is greatly improved.
Therefore, by the above method, the infrared distance meter 15 is used to replace the existing displacement sensor, and the expansion displacement before and after expansion can be measured more accurately. And can simulate the temperature and pressure environment in the expansion cavity 4 according to the temperature and pressure data of the underground mudstone, thereby greatly improving the stability of the test result.
Claims (2)
1. The expansion tester comprises a test box (1) and a liquid injection box (2); the liquid injection box (2) injects drilling fluid into an expansion cavity (4) of the test box (1) through a liquid injection tubule (3), and the test box (1) comprises a top cover (5), a transparent box cylinder (6) and a bottom cover (7); a pressurizing port (9) and a pressurizing pipeline (10) are arranged on a sealing plug cap (8) on the top cover (5);
the method is characterized in that: a distance measuring cylinder (11) is arranged at the center of the sealing plug cap (8), and a leveling pressing plate (13) is arranged at the bottom of a piston rod (12) of the distance measuring cylinder (11); the top surface of the leveling pressure plate (13) is provided with a mirror surface column (14); be equipped with infrared distance meter (15) on sealed stopper cap (8), the probe and the alignment of mirror face post (14) of infrared distance meter (15).
2. The dilatometer of claim 1, wherein: and a temperature sensor (16) and a spiral heating pipe (17) are arranged on the sealing plug cap (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022049675.9U CN212674071U (en) | 2020-09-18 | 2020-09-18 | Expansion tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022049675.9U CN212674071U (en) | 2020-09-18 | 2020-09-18 | Expansion tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212674071U true CN212674071U (en) | 2021-03-09 |
Family
ID=74824083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022049675.9U Active CN212674071U (en) | 2020-09-18 | 2020-09-18 | Expansion tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212674071U (en) |
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2020
- 2020-09-18 CN CN202022049675.9U patent/CN212674071U/en active Active
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