CN112649305A - Device for testing high-temperature and high-pressure rock core and method for testing high-temperature and high-pressure rock core - Google Patents
Device for testing high-temperature and high-pressure rock core and method for testing high-temperature and high-pressure rock core Download PDFInfo
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- CN112649305A CN112649305A CN201910966249.0A CN201910966249A CN112649305A CN 112649305 A CN112649305 A CN 112649305A CN 201910966249 A CN201910966249 A CN 201910966249A CN 112649305 A CN112649305 A CN 112649305A
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- 238000012360 testing method Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000011435 rock Substances 0.000 title abstract description 19
- 229910052903 pyrophyllite Inorganic materials 0.000 claims abstract description 32
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 239000012530 fluid Substances 0.000 claims abstract description 9
- 239000000523 sample Substances 0.000 claims description 84
- 239000011148 porous material Substances 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 5
- 238000005259 measurement Methods 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000012267 brine Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000004088 simulation 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
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0226—High temperature; Heating means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/023—Pressure
- G01N2203/0232—High pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0658—Indicating or recording means; Sensing means using acoustic or ultrasonic detectors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- 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)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a device and a method for testing a high-temperature and high-pressure core, wherein the device comprises: the device comprises a sample cabin with a high-temperature high-pressure cabin, a stress strain gauge positioned in the high-temperature high-pressure cabin and used for being fixed on a core sample, and pyrophyllite used for wrapping the core sample and the stress strain gauge. The method for testing the high-temperature high-pressure core comprises the following steps: s1, fixing the stress strain gauge on the core sample; s2, wrapping the core sample fixed with the stress strain gauge by pyrophyllite and placing the core sample in a high-temperature high-pressure chamber of the sample bin; s3, filling fluid into the high-temperature and high-pressure chamber and heating; and S4, carrying out ultrasonic acquisition on the core sample. The invention can meet the rock ultrasonic testing and stress strain measurement of the rock core under the pressure of 20-300MPa and the temperature of 20-350 ℃.
Description
Technical Field
The invention belongs to the field of rock physics experiments, and particularly relates to a device for testing a high-temperature and high-pressure rock core.
Background
As is well known, with continuous excavation and exploitation of surface oil and gas fields, shallow oil and gas resources become less and less, and people begin to aim targets for exploring oil and gas resources at deep oil and gas fields. To study deep oil and gas fields, it is necessary to simulate the high-temperature and high-pressure environment deep underground. By detecting the change of physical properties of the oil-bearing rock under different pressure and temperature conditions, the generation, change, migration and the like of an oil storage layer can be researched, and the data of the oil-bearing rock has important guiding significance for the development of oil and gas fields. The high temperature and high pressure test device is the equipment for simulating the environment.
The main body part of the high-temperature and high-pressure detection device is a sealed high-pressure cabin. In the bin, the sample to be tested is heated and pressurized. And then detecting the change of the physical characteristics of the probe under different conditions through the built-in probe. Therefore, the device can measure the characteristics of the sample in each stage different from the characteristics under the normal temperature and low pressure environment. In the oil exploration research department, it is an indispensable research means to really know the petrophysical characteristics of oil and gas strata.
But the present can satisfy temperature, pressure needs, and the highest temperature that can be used for ultrasonic testing's high temperature high pressure test device again can reach does not exceed 160 degrees centigrade, and the sample is wrapped with the pyrocondensation pipe among the prior art, but the pyrocondensation pipe can't tolerate the high temperature more than 200, can't guarantee that ultrasonic probe normally works when the temperature that exceeds 160 degrees centigrade.
Disclosure of Invention
Features and advantages of the invention will be set forth in part in the description which follows, or may be obvious from the description, or may be learned by practice of the invention.
In order to overcome the problems of the prior art, the invention provides a device for testing a high-temperature and high-pressure core, which comprises: the device comprises a sample cabin with a high-temperature high-pressure cabin, a stress strain gauge positioned in the high-temperature high-pressure cabin and used for being fixed on a core sample, and pyrophyllite used for wrapping the core sample and the stress strain gauge.
Optionally, the apparatus further comprises a hose connected to the high temperature hyperbaric chamber.
Optionally, the number of the hoses is two, and one end of each hose passes through the pyrophyllite to be in contact with the upper end and the lower end of the core sample.
Optionally, the device further comprises a waveguide rod, one end of the waveguide rod is used for being connected with the ultrasonic probe, and the other end of the waveguide rod penetrates through the pyrophyllite to be in contact with the core sample.
Optionally, the number of the wave guide rods is two, and the two wave guide rods are respectively in contact with the upper end and the lower end of the core sample.
Optionally, the stress strain gauge is 2 pieces and fixed in the middle of the core sample through high temperature resistant glue.
Optionally, the outer wall of the pyrophyllite is cylindrical.
The invention provides a method for testing a high-temperature and high-pressure rock core, which comprises the following steps:
s1, fixing the stress strain gauge on the core sample;
s2, wrapping the core sample fixed with the stress strain gauge by pyrophyllite and placing the core sample in a high-temperature high-pressure chamber of the sample bin;
s3, filling fluid into the high-temperature and high-pressure chamber and heating;
and S4, carrying out ultrasonic collection on the core sample.
Optionally, in step S2, the pyrophyllite wraps the core sample fixed with the stress strain gauge into a cylinder.
Optionally, the step S3 includes:
filling the core sample with fluid through a hose communicated with the high-temperature high-pressure cabin to load pore pressure.
The invention provides a device and a method for testing a high-temperature and high-pressure rock core, which simulate a rock sample experiment chamber under certain temperature and pressure conditions, and realize ultrasonic testing and stress strain measurement of rock under the conditions of pressure below 350 MPa and temperature below 350 ℃. The invention meets the 6000-10000-meter deep oil and gas reservoir environment simulation, provides an effective detection method and a detection means for deep oil and gas exploration research, and meets the requirements of deep oil and gas reservoir rock physical experiments.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus for high-temperature and high-pressure core testing according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1, the present invention provides an apparatus for high temperature and high pressure core testing, which comprises a sample chamber 7 with a high temperature and high pressure cabin, a stress strain gauge 4 positioned in the high temperature and high pressure cabin for fixing on a core sample, and a pyrophyllite 5 for wrapping a core sample 6 and the stress strain gauge 4.
In this embodiment, the sample chamber 7 is a hollow cylinder, and both ends of the sample chamber are sealed by plugs to form a high-temperature high-pressure chamber for accommodating the core sample 6.
Generally, the stress strain gauge is 2 pieces and is fixed on the middle cylindrical surface of the core sample through high-temperature-resistant glue. The data line (not shown) of the stress strain gauge penetrates out of the pyrophyllite 5 and then passes through a plug at the end of the sample chamber to be connected with external equipment. In specific implementation, the stress strain gauge 4 can be fixed by high-temperature-resistant glue, and the deformation amount of the core sample 6 can be measured.
The outer wall of the pyrophyllite 5 is cylindrical, that is, the pyrophyllite 5 wraps the core sample fixed with the stress strain gauge into a cylinder. The core sample wrapped by the pyrophyllite is placed in a steel high-temperature high-pressure chamber, and the pyrophyllite 5 can be used for heat conduction of the sealing box.
The device further includes guided wave pole 3, and the one end of guided wave pole 3 is used for linking to each other with ultrasonic transducer, and the other end passes end cap, pyrophyllite and the terminal surface of rock core sample in proper order and contacts. In this embodiment, two guide wave rods 3 respectively penetrate the plugs at the two ends of the sample chamber and the pyrophyllite 5 to contact with the upper and lower end faces of the core sample 6. The ultrasonic probe is used for transmitting and receiving ultrasonic signals, and the waveguide rod is used for transmitting ultrasonic waves.
The device also comprises a hose 1 connected to the high-temperature and high-pressure chamber. In this embodiment, the number of the hoses 1 is two, and one end of each of the two hoses passes through the plugs at the two ends of the sample chamber and the pyrophyllite 5 to contact with the upper end and the lower end of the core sample. The hose 1 is used to fill the sample with liquid (water, brine, oil) and to apply pore pressure.
The outside of the sample bin can be heated by adopting an independent external heating device, for example, the whole sample bin is heated in a resistance wire heating mode, so that a low-temperature environment (the highest temperature is 350 ℃) below the highest temperature born in the sample bin is simulated. The present invention is not limited to a specific heating method.
The invention provides a method for testing a high-temperature and high-pressure rock core, which comprises the following steps:
s1, fixing the stress strain gauge on the core sample;
in specific implementation, the stress strain gauge can be fixed by high-temperature-resistant glue and used for measuring the deformation amount of the core sample.
S2, wrapping the core sample fixed with the stress strain gauge by pyrophyllite and placing the core sample in a high-temperature high-pressure chamber of the sample bin;
the sample bin can be a hollow cylinder, and two ends of the sample bin are sealed by plugs to form a high-temperature high-pressure cabin for containing the core sample. The pyrophyllite wraps the core sample fixed with the stress strain gauge into a cylinder. The core sample wrapped by the pyrophyllite is placed in a steel high-temperature high-pressure chamber, and the pyrophyllite can be used for heat conduction of the sealing box. And the data line of the stress strain gauge penetrates out of the pyrophyllite and then passes through a plug positioned at the end part of the sample bin to be connected with external equipment.
S3, filling fluid into the high-temperature and high-pressure chamber and heating;
the method specifically comprises the step of filling fluid into the core sample through a hose communicated with the high-temperature high-pressure cabin to load pore pressure. In this embodiment, the number of the hoses is two, and one end of each of the two hoses is respectively passed through the plugs at the two ends of the sample bin, and the pyrophyllite is in contact with the upper end and the lower end of the core sample. The hose is used to fill the sample with liquid (water, brine, oil) and to apply pore pressure. In specific implementation, the annular pressure loading can be further realized by filling fluid between the pyrophyllite and the inner wall of the high-temperature high-pressure cabin.
The outside of the sample bin can be heated by adopting an independent external heating device, for example, the whole sample bin is heated in a resistance wire heating mode, so that a low-temperature environment (the highest temperature is 350 ℃) below the highest temperature born in the sample bin is simulated. The present invention is not limited to a specific heating method.
And S4, carrying out ultrasonic collection on the core sample.
After the temperature and the pressure meet the requirements, carrying out ultrasonic collection on the core sample, and recording data; the ultrasonic wave is gathered and is gone on through the guided wave pole, and the one end of guided wave pole is used for linking to each other with ultrasonic transducer, and the other end passes end face subsides of end cap, pyrophyllite and rock core sample in proper order and tightly. In this embodiment, the number of the guide wave rods is two, and the guide wave rods respectively penetrate through the plugs at the two ends of the sample bin and contact with the upper end face and the lower end face of the core sample. The ultrasonic probe is used for transmitting and receiving ultrasonic signals, and the waveguide rod is used for transmitting ultrasonic waves.
The invention can simulate higher underground temperature and pressure environment, and the maximum temperature in the high-temperature and high-pressure chamber can reach 350-360 ℃ by heating through the external heating device. The highest pressure realized by filling the high-temperature high-pressure chamber with fluid can be increased to 300MPa, and ultrasonic waves and stress-strain test degrees are carried out under the multiple actions of pore pressure and temperature.
The invention provides a device for testing a high-temperature and high-pressure rock core, which adopts pyrophyllite to wrap a sample, and improves the experimental temperature, so that the normal work of an ultrasonic probe can be ensured below 350 ℃, and the experimental requirements of simulating the temperature and the pressure at the depth of 6000 plus 10000 meters are met. Namely, the invention can meet the core elastic parameter test under the pressure of 20-300MPa and the temperature of 20-350 ℃.
The above-described embodiment is only one embodiment of the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be easily made based on the application and principle of the present invention disclosed in the present application, and the present invention is not limited to the method described in the above-described embodiment of the present invention, so that the above-described embodiment is only preferred, and not restrictive.
Claims (10)
1. An apparatus for high temperature and high pressure core testing, comprising: the device comprises a sample cabin with a high-temperature high-pressure cabin, a stress strain gauge positioned in the high-temperature high-pressure cabin and used for being fixed on a core sample, and pyrophyllite used for wrapping the core sample and the stress strain gauge.
2. The apparatus for hpht core testing as recited in claim 1, further comprising a hose connected to the hpht chamber.
3. The apparatus for high temperature and high pressure core testing as claimed in claim 2, wherein there are two hoses, one end of each hose is respectively passed through the pyrophyllite and is contacted with the upper and lower ends of the core sample.
4. The apparatus for high temperature and high pressure core testing as claimed in claim 1, further comprising a waveguide rod having one end for connecting to an ultrasonic probe and the other end for contacting a core sample through the pyrophyllite.
5. The device for high-temperature and high-pressure core testing as claimed in claim 4, wherein the number of the wave guide rods is two, and the two wave guide rods are respectively in contact with the upper end and the lower end of the core sample.
6. The device for the high-temperature and high-pressure core test as claimed in claim 1, wherein the stress strain gauge is 2 pieces and is fixed in the middle of the core sample through high-temperature resistant glue.
7. The apparatus for high temperature and high pressure core testing as claimed in claim 1, wherein the outer wall of the pyrophyllite is cylindrical.
8. A method for testing a high-temperature high-pressure core is characterized by comprising the following steps:
s1, fixing the stress strain gauge on the core sample;
s2, wrapping the core sample fixed with the stress strain gauge by pyrophyllite and placing the core sample in a high-temperature high-pressure chamber of the sample bin;
s3, filling fluid into the high-temperature and high-pressure chamber and heating;
and S4, carrying out ultrasonic collection on the core sample.
9. The method for high-temperature and high-pressure core testing according to claim 8, wherein in the step S2, pyrophyllite wraps a core sample fixed with a stress strain gauge into a cylinder.
10. The method for high temperature and high pressure core testing as claimed in claim 8, wherein the step S3 comprises:
filling the core sample with fluid through a hose communicated with the high-temperature high-pressure cabin to load pore pressure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910966249.0A CN112649305B (en) | 2019-10-12 | 2019-10-12 | Device and method for high-temperature high-pressure core testing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910966249.0A CN112649305B (en) | 2019-10-12 | 2019-10-12 | Device and method for high-temperature high-pressure core testing |
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| CN112649305A true CN112649305A (en) | 2021-04-13 |
| CN112649305B CN112649305B (en) | 2024-04-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113340993A (en) * | 2021-06-01 | 2021-09-03 | 中国石油大学(北京) | Ultrasonic monitoring device and method for temperature and pressure control of thick oil saturated rock sample |
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2019
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