CN114910476B - Device for simulating layered rock salt to store supercritical carbon dioxide under dynamic pressure difference - Google Patents
Device for simulating layered rock salt to store supercritical carbon dioxide under dynamic pressure difference Download PDFInfo
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- CN114910476B CN114910476B CN202210362560.6A CN202210362560A CN114910476B CN 114910476 B CN114910476 B CN 114910476B CN 202210362560 A CN202210362560 A CN 202210362560A CN 114910476 B CN114910476 B CN 114910476B
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 235000002639 sodium chloride Nutrition 0.000 title claims abstract description 73
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 title claims abstract description 53
- 239000011780 sodium chloride Substances 0.000 title claims abstract description 53
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 43
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 43
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 239000012267 brine Substances 0.000 claims abstract description 31
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims abstract description 31
- 238000004088 simulation Methods 0.000 claims abstract description 25
- 238000002347 injection Methods 0.000 claims abstract description 14
- 239000007924 injection Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000011084 recovery Methods 0.000 claims abstract description 7
- 239000002699 waste material Substances 0.000 claims abstract description 5
- 238000004064 recycling Methods 0.000 claims abstract description 4
- 150000003839 salts Chemical class 0.000 claims description 20
- 238000005192 partition Methods 0.000 claims description 13
- 239000011435 rock Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 239000000243 solution Substances 0.000 description 5
- 239000004927 clay Substances 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010446 mirabilite Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 mudstone Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
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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
- G01N15/082—Investigating permeability by forcing a fluid through a sample
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/70—Combining sequestration of CO2 and exploitation of hydrocarbons by injecting CO2 or carbonated water in oil wells
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Pathology (AREA)
- Immunology (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Remote Sensing (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Dispersion Chemistry (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses a device for simulating lamellar rock salt to store supercritical carbon dioxide under dynamic pressure difference, which comprises a pressure difference simulation tank, a lamellar rock salt test assembly, a first brine container, a water pump and a second brine container for recycling waste brine, wherein the pressure difference simulation tank is used for simulating the pressure difference of the lamellar rock salt; the device also comprises a high-pressure gas tank for storing carbon dioxide gas, an air pump, a low-pressure gas tank for storing carbon dioxide gas, a liquid medium storage tank, a liquid injection pump and a liquid medium recovery tank. The invention can simulate the complex environment state of the lamellar rock salt test piece under the dynamic fluctuation pressure difference condition, and can more closely and truly master the micro-structure characteristic change rule of lamellar rock salt.
Description
Technical Field
The invention relates to the technical field of carbon dioxide storage of a layered salt karst cavity, in particular to a device for simulating storage of supercritical carbon dioxide of layered salt rock under a dynamic pressure difference condition.
Background
The salt cavern energy storage is an important direction of large-scale energy storage development due to the characteristics of long service life, low cost, safety, environmental protection, small occupied area and the like, and is considered as an excellent place for underground energy storage.
The pure salt rock and the CO 2 can keep better stability, do not generate physical and chemical reaction, and are ideal places for storing the CO 2. The layered salt karst cavity contains more clay components, so that on one hand, the clay contains various impurities such as calcium sulfate, mudstone, gypsum, mirabilite and the like, CO 2 can enter a supercritical state under the action of stratum temperature and pressure during storage, and the clay is dissolved and extracted; on the other hand, CO 2 is readily soluble in brine, making the CO 2 brine solution acidic, thereby facilitating the reaction of the solution with impurities.
In an actual salt cavity, the stratum is pressurized to the cavity, and the inside of the cavity is also under high pressure due to the fact that carbon dioxide is stored, so that salt rock is in a pressure difference environment of the stratum and the cavity, and the pressure in the gas storage can be in a fluctuation state for a long time due to the fact that gas is discharged and utilized, and the like.
Because the salt cavern stores CO 2 in a dangerous environment, the change of the micro-structure of the layered salt rock under the condition of dynamic pressure difference needs to be researched, and further measures for dealing with the leakage of CO 2 caused by the structural change of the salt cavern can be prepared in advance for storing CO 2 for a long time. However, it is difficult to directly study the microscopic structural changes of the layered rock salt in the salt cavity, and thus a device for simulating the storage of supercritical carbon dioxide in the layered rock salt under dynamic pressure difference is required.
Disclosure of Invention
In view of the above, the present invention aims to provide a device for simulating the storage of supercritical carbon dioxide in layered rock salt under dynamic pressure difference, so as to solve the technical problem of research on the micro-structural feature change of the layered rock salt under dynamic pressure difference.
The device for simulating lamellar rock salt to store supercritical carbon dioxide under dynamic pressure difference comprises a pressure difference simulation tank, wherein the pressure difference simulation tank comprises a tank body and a tank cover, and an annular partition plate is arranged in the middle of the tank body; the tank cover is provided with an air inlet connector, an air outlet connector, a pressure gauge, a temperature sensor and an electric heater;
The device for simulating the layered rock salt to store the supercritical carbon dioxide under the dynamic pressure difference further comprises a layered rock salt test component arranged on the annular partition board, and the inner cavity of the pressure difference simulation tank is divided into an upper cavity and a lower cavity which are mutually independent in the state that the layered rock salt test component is arranged on the annular partition board;
the device for simulating the layered rock salt to store the supercritical carbon dioxide under the dynamic pressure difference further comprises a first brine container for storing fresh brine, a water pump and a second brine container for recycling waste brine, wherein an inlet of the water pump is connected with the first brine container, an outlet of the water pump is connected with an upper cavity of the pressure difference simulating tank, and a first valve is arranged on a pipeline on the outlet side of the water pump; the second brine container is connected with the upper cavity of the differential pressure simulation tank through a drain pipe, and a second valve is arranged on the drain pipe;
The device for simulating the layered rock salt to store the supercritical carbon dioxide under the dynamic pressure difference further comprises a high-pressure gas tank for storing the carbon dioxide gas, an air pump and a low-pressure gas tank for storing the carbon dioxide gas, wherein an inlet of the air pump is connected with the high-pressure gas tank, an outlet of the air pump is connected with an air inlet joint on a filling cover, and a third valve is arranged on a pipeline at the outlet side of the air pump; the low-pressure gas tank is connected with an exhaust joint on the filling cover through a gas pipe, and a fourth valve is arranged on the gas pipe;
The device for simulating the layered rock salt to store the supercritical carbon dioxide under the dynamic pressure difference further comprises a liquid medium storage tank, a liquid injection pump and a liquid medium recovery tank, wherein an inlet of the liquid injection pump is connected with the liquid medium storage tank, an outlet of the liquid injection pump is connected with a lower cavity of the pressure difference simulation tank, and a fifth valve is arranged on a pipeline at the outlet side of the liquid injection pump; the liquid medium recovery tank is connected with the lower cavity of the differential pressure simulation tank through a liquid delivery pipe, and the liquid delivery pipe is provided with a pressure regulating valve and a hydraulic gauge.
Further, the lamellar salt rock test assembly comprises a lamellar salt rock test piece, an upper annular sleeve, an upper conical sealing sleeve positioned in the upper annular sleeve, a lower cylindrical sleeve and a lower conical sealing sleeve positioned in the lower cylindrical sleeve, through holes are uniformly distributed in the lower cylindrical sleeve, conical inclined planes matched with the upper conical sealing sleeve and the lower conical sealing sleeve are respectively arranged in the middle of the lamellar salt rock test piece, the upper annular sleeve and the lower cylindrical sleeve are fixedly connected through a bolt and nut assembly, the edge of the upper annular sleeve is fixedly connected on an annular partition plate through bolts, and sealing gaskets are arranged between the annular partition plate and the upper annular sleeve.
The invention has the beneficial effects that:
The device for simulating lamellar rock salt to store supercritical carbon dioxide under dynamic pressure difference can simulate that a lamellar rock salt test piece is soaked in brine, one side of the lamellar rock salt test piece bears brine and supercritical carbon dioxide pressure, the other side of the lamellar rock salt test piece bears stratum pressure, and the lamellar rock salt test piece is in a complex environment state under the dynamic fluctuation pressure difference condition, so that the microscopic structural characteristic change of the lamellar rock salt test piece under the complex environment can be observed periodically, and the microscopic structural characteristic change rule of the lamellar rock salt can be mastered more truly.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus for simulating the storage of supercritical carbon dioxide in layered rock salt under dynamic pressure differential.
Fig. 2 is a schematic structural view of a layered rock salt test assembly.
Detailed Description
The invention is further described below with reference to the drawings and examples.
As shown in the figure, the device for simulating the storage of supercritical carbon dioxide by layered rock salt under dynamic pressure difference in the embodiment comprises a pressure difference simulation tank, wherein the pressure difference simulation tank comprises a tank body 1 and a tank cover 2, and an annular partition plate 3 is arranged in the middle of the tank body; the tank cover is provided with an air inlet connector 4, an air outlet connector 5, a pressure gauge 6, a temperature sensor 7 and an electric heater 8.
The device for simulating the layered rock salt to store the supercritical carbon dioxide under the dynamic pressure difference further comprises a layered rock salt test component arranged on the annular partition plate, and the inner cavity of the pressure difference simulation tank is divided into an upper cavity and a lower cavity which are mutually independent under the state that the layered rock salt test component is arranged on the annular partition plate. In this embodiment, the lamellar salt rock test assembly includes lamellar salt rock test piece 9, goes up ring cover 10, is located last toper seal cover 11, lower barrel cover 12 and the lower toper seal cover 13 that is located down the barrel cover of going up the ring cover, and evenly distributed has the through-hole down on the barrel cover, the middle part of lamellar salt rock test piece be provided with respectively with last toper seal cover and lower toper seal cover complex toper inclined plane, go up ring cover and lower barrel cover and pass through bolt nut assembly 14 fixed connection, go up the limit portion of ring cover and pass through screw 15 fixed connection on annular baffle, and be provided with sealing gasket 16 between annular baffle and the last ring cover. The layered rock salt test component in the embodiment can reliably fix a layered rock salt test piece and can form a good sealing structure to ensure that an upper cavity and a lower cavity of the differential pressure simulation tank are isolated from each other.
The device for simulating the layered rock salt to store the supercritical carbon dioxide under the dynamic pressure difference further comprises a first brine container 17 for storing fresh brine, a water pump 18 and a second brine container 19 for recycling waste brine, wherein an inlet of the water pump is connected with the first brine container, an outlet of the water pump is connected with an upper cavity of a pressure difference simulation tank, and a first valve 21 is arranged on a pipeline on the outlet side of the water pump; the second brine container is connected with the upper cavity of the differential pressure simulation tank through a drain pipe, and a second valve 22 is arranged on the drain pipe.
The device for simulating the layered rock salt to store the supercritical carbon dioxide under the dynamic pressure difference further comprises a high-pressure gas tank 23 for storing the carbon dioxide gas, an air pump 24 and a low-pressure gas tank 25 for storing the carbon dioxide gas, wherein an inlet of the air pump is connected with the high-pressure gas tank, an outlet of the air pump is connected with an air inlet joint on a filling cover, and a third valve 26 is arranged on a pipeline at the outlet side of the air pump; the low-pressure gas tank is connected with an exhaust joint on the filling cover through a gas pipe, and a fourth valve 27 is arranged on the gas pipe.
The device for simulating the layered rock salt to store the supercritical carbon dioxide under the dynamic pressure difference further comprises a liquid medium storage tank 28, a liquid injection pump 29 and a liquid medium recovery tank 30, wherein an inlet of the liquid injection pump is connected with the liquid medium storage tank, an outlet of the liquid injection pump is connected with a lower cavity of the pressure difference simulation tank, and a fifth valve 31 is arranged on a pipeline at the outlet side of the liquid injection pump; the liquid medium recovery tank is connected with the lower cavity of the differential pressure simulation tank through a liquid delivery pipe, and the liquid delivery pipe is provided with a pressure regulating valve 32 and a hydraulic gauge 33.
In the device for simulating lamellar rock salt to store supercritical carbon dioxide under dynamic pressure difference, fresh brine is injected into the upper cavity of the pressure difference simulation tank through the water pump, so that the environment of lamellar rock salt immersed in brine can be simulated; the brine can be replaced regularly, the first valve is closed when the brine is replaced, the second valve is opened, and the waste brine automatically flows into the second brine container under the pressure of supercritical carbon dioxide gas; the environment where the lamellar rock salt is in the supercritical carbon dioxide can be simulated by adjusting the air pressure of the carbon dioxide gas injected into the upper cavity of the differential pressure simulation tank and adjusting the temperature of the carbon dioxide gas through the heater, and the pressure of the supercritical carbon dioxide can be adjusted in a circulating way; the liquid medium is injected into the lower cavity of the differential pressure simulation tank through the liquid injection pump, and the pressure of the liquid medium in the lower cavity is regulated through the pressure regulating valve, so that the environment that the layered rock salt bears the formation pressure with different sizes can be simulated; and the air pressure of the upper cavity of the differential pressure simulation tank can be dynamically adjusted by opening the fourth valve at regular time, so that the dynamic differential pressure environment born by the layered rock salt is simulated. In the device for simulating lamellar rock salt to store supercritical carbon dioxide under dynamic pressure difference, the state of the complex environment of the supercritical carbon dioxide is stored through a relatively real simulated lamellar rock salt solution cavity, and the change of the microscopic structural characteristics of the lamellar rock salt test piece in the complex environment is observed periodically, so that the change rule of the microscopic structural characteristics of the lamellar rock salt can be mastered more closely and truly.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (2)
1. The device for simulating the storage of supercritical carbon dioxide by lamellar rock salt under dynamic pressure difference is characterized in that: the pressure difference simulation tank comprises a tank body and a tank cover, wherein an annular partition plate is arranged in the middle of the tank body; the tank cover is provided with an air inlet connector, an air outlet connector, a pressure gauge, a temperature sensor and an electric heater;
The device for simulating the layered rock salt to store the supercritical carbon dioxide under the dynamic pressure difference further comprises a layered rock salt test component arranged on the annular partition board, and the inner cavity of the pressure difference simulation tank is divided into an upper cavity and a lower cavity which are mutually independent in the state that the layered rock salt test component is arranged on the annular partition board;
the device for simulating the layered rock salt to store the supercritical carbon dioxide under the dynamic pressure difference further comprises a first brine container for storing fresh brine, a water pump and a second brine container for recycling waste brine, wherein an inlet of the water pump is connected with the first brine container, an outlet of the water pump is connected with an upper cavity of the pressure difference simulating tank, and a first valve is arranged on a pipeline on the outlet side of the water pump; the second brine container is connected with the upper cavity of the differential pressure simulation tank through a drain pipe, and a second valve is arranged on the drain pipe;
The device for simulating the layered rock salt to store the supercritical carbon dioxide under the dynamic pressure difference further comprises a high-pressure gas tank for storing the carbon dioxide gas, an air pump and a low-pressure gas tank for storing the carbon dioxide gas, wherein an inlet of the air pump is connected with the high-pressure gas tank, an outlet of the air pump is connected with an air inlet joint on a filling cover, and a third valve is arranged on a pipeline at the outlet side of the air pump; the low-pressure gas tank is connected with an exhaust joint on the filling cover through a gas pipe, and a fourth valve is arranged on the gas pipe;
The device for simulating the layered rock salt to store the supercritical carbon dioxide under the dynamic pressure difference further comprises a liquid medium storage tank, a liquid injection pump and a liquid medium recovery tank, wherein an inlet of the liquid injection pump is connected with the liquid medium storage tank, an outlet of the liquid injection pump is connected with a lower cavity of the pressure difference simulation tank, and a fifth valve is arranged on a pipeline at the outlet side of the liquid injection pump; the liquid medium recovery tank is connected with the lower cavity of the differential pressure simulation tank through a liquid delivery pipe, and the liquid delivery pipe is provided with a pressure regulating valve and a hydraulic gauge.
2. The apparatus for simulating the storage of supercritical carbon dioxide by a layered rock salt under dynamic pressure differential of claim 1, wherein: the layered salt rock testing component comprises a layered salt rock test piece, an upper annular sleeve, an upper conical sealing sleeve positioned in the upper annular sleeve, a lower cylindrical sleeve and a lower conical sealing sleeve positioned in the lower cylindrical sleeve, through holes are uniformly distributed in the lower cylindrical sleeve, conical inclined planes matched with the upper conical sealing sleeve and the lower conical sealing sleeve are respectively arranged in the middle of the layered salt rock test piece, the upper annular sleeve and the lower cylindrical sleeve are fixedly connected through a bolt and nut component, the edge of the upper annular sleeve is fixedly connected to an annular partition plate through bolts, and sealing gaskets are arranged between the annular partition plate and the upper annular sleeve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210362560.6A CN114910476B (en) | 2022-04-07 | 2022-04-07 | Device for simulating layered rock salt to store supercritical carbon dioxide under dynamic pressure difference |
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| CN202210362560.6A CN114910476B (en) | 2022-04-07 | 2022-04-07 | Device for simulating layered rock salt to store supercritical carbon dioxide under dynamic pressure difference |
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| CN114910476A CN114910476A (en) | 2022-08-16 |
| CN114910476B true CN114910476B (en) | 2024-06-25 |
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| AU2020101248A4 (en) * | 2020-07-03 | 2020-08-13 | The Institute of Geology and Geophysics, Chinese Academy of Sciences | A Preparation Device for Compressive Pre-stress Artificial Core |
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| CN202330168U (en) * | 2011-11-14 | 2012-07-11 | 东北石油大学 | Simulation test device of separate layer fracturing layer cross flow |
| KR101248531B1 (en) * | 2011-12-05 | 2013-04-03 | 한국지질자원연구원 | Apparatus and method for measuring porosity and permeability of dioxide carbon underground storage medium |
| CN102606146B (en) * | 2012-02-21 | 2014-12-10 | 重庆大学 | Salt cavern model test method for simulating multi-interbedded salt rock geological conditions |
| CN109882149B (en) * | 2018-01-29 | 2023-04-07 | 西南石油大学 | Experimental device and method for simulating production dynamics of fracture-cavity carbonate condensate gas reservoir |
| CN208520862U (en) * | 2018-06-11 | 2019-02-19 | 青岛科技大学 | It is novel can CT observation displacement test device |
| CN110954460B (en) * | 2019-12-05 | 2022-04-12 | 中海石油(中国)有限公司湛江分公司 | Large-size sandstone target perforation flow efficiency testing device |
| CN112360430B (en) * | 2020-11-04 | 2023-05-12 | 中国石油大学(北京) | Experimental device for crack plugging simulation evaluation |
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| AU2020101248A4 (en) * | 2020-07-03 | 2020-08-13 | The Institute of Geology and Geophysics, Chinese Academy of Sciences | A Preparation Device for Compressive Pre-stress Artificial Core |
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| Title |
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| 钻井液循环模拟实验装置的研究现状与发展趋势;张洁;化工技术与开发;20140315;43(03);16-20+29 * |
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