CN220751920U - Oil reservoir imbibition experimental device - Google Patents
Oil reservoir imbibition experimental device Download PDFInfo
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- CN220751920U CN220751920U CN202420429478.5U CN202420429478U CN220751920U CN 220751920 U CN220751920 U CN 220751920U CN 202420429478 U CN202420429478 U CN 202420429478U CN 220751920 U CN220751920 U CN 220751920U
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- oil reservoir
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- 238000005213 imbibition Methods 0.000 title claims abstract description 56
- 239000007788 liquid Substances 0.000 claims abstract description 37
- 238000002347 injection Methods 0.000 claims abstract description 14
- 239000007924 injection Substances 0.000 claims abstract description 14
- 238000012360 testing method Methods 0.000 claims description 34
- 230000008595 infiltration Effects 0.000 claims description 5
- 238000001764 infiltration Methods 0.000 claims description 5
- 238000002474 experimental method Methods 0.000 abstract description 8
- 239000011435 rock Substances 0.000 abstract description 8
- 238000011161 development Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 abstract description 2
- 238000005325 percolation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 25
- 239000007789 gas Substances 0.000 description 12
- 239000012530 fluid Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000005303 weighing Methods 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000013480 data collection Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Landscapes
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The utility model provides an oil reservoir imbibition experimental apparatus, relate to oil gas development technical field, including imbibition container, container lid, wherein, imbibition container top is detachably provided with the container lid, inside hollow airtight container is constituteed to the two, imbibition container side is provided with gas injection mouth, inlet, the liquid outlet of stretching into airtight container inside hollow portion from outside respectively, wherein, the gas injection mouth is connected to the air supply, the inlet is connected to the liquid source, container lid below is provided with interface tester and the tensile force weight that can stretch into airtight container inside hollow portion, the measuring end of tensile force weight can link to each other with the rock core that awaits measuring, imbibition container outside still is provided with control equipment, it is connected with interface tester and tensile force weight electricity respectively; according to the utility model, the percolation experiment is carried out in the closed container, and the measuring end is arranged in the closed container, so that the rock core can be subjected to experimental measurement in a high-temperature and high-pressure environment for simulating stratum conditions in the closed container, and the measuring result is closer to reality.
Description
Technical Field
The utility model relates to the technical field of oil gas development, in particular to an oil reservoir imbibition experimental device.
Background
The oil gas seepage-storing space in the fractured reservoir is very complex, the development difficulty is high, the natural seepage-absorbing oil extraction method is adopted in the industry for developing the low-permeability reservoir, the principle is that wet phase fluid enters the matrix under the action of capillary force, the non-wet phase fluid is replaced, and based on the development mode, the experimental research on the seepage-absorbing theory is developed to provide rich theoretical guidance for the natural seepage-absorbing oil extraction. The current main experimental research method of the imbibition theory is an imbibition displacement experiment, and the main method is that under the laboratory condition, a core of saturated experimental oil is arranged in water to observe imbibition displacement efficiency of water relative to an oil phase, and after refinement, the method can be divided into two methods: the first method is a volumetric method, namely, the volume of the oil phase displaced by the water is observed, so that the displacement efficiency is judged, and the method has the advantages of convenience in metering and simplicity in operation, and the defects that the volume is often inaccurate through observation and determination, and part of the displaced oil phase is adsorbed on the surface of the rock core, so that systematic errors are generated; the second method is a weighing method, namely, the rock core is suspended on an electronic balance and immersed in water, and the weight change of the rock core before and after displacement is observed.
Disclosure of Invention
In view of the above, the utility model provides an oil reservoir imbibition experimental device which can simulate imbibition experiments under actual stratum conditions and improve the accuracy of test results.
The utility model relates to an oil reservoir imbibition experimental device which comprises an imbibition container and a container cover, wherein the top of the imbibition container is detachably provided with the container cover, and the container cover form a closed container with a hollow inside;
the side surface of the permeation and suction container is respectively provided with an air injection port, a liquid inlet and a liquid outlet which extend into the hollow part in the closed container from the outside, wherein the air injection port is connected to an air source, and the liquid inlet is connected to a liquid source;
the container lid below is provided with interface tester and the tensile force weight that can stretch into the inside hollow portion of airtight container, and the measuring end of tensile force weight can link to each other with the rock core that awaits measuring, and the infiltration container outside still is provided with control equipment, and it is connected with interface tester and tensile force weight electricity respectively.
According to some embodiments of the utility model, a test ring with a pore diameter smaller than the inner diameter of the imbibition container is arranged on the inner side surface of the imbibition container, and the horizontal plane where the test ring is positioned is used for respectively cutting the interface tester and the measuring end of the tension weight.
Further, the aperture of the test ring is larger than the diameter of the core to be tested.
Further, the gas injection port is higher than the test ring, and the liquid outlet is positioned at the lowest position in the imbibition container.
Some embodiments of the utility model are characterized in that a temperature control sleeve is sleeved on the outer surface of the imbibition container, and the temperature control sleeve is connected with a temperature control device arranged outside the imbibition container, and the temperature control device is electrically connected with control equipment.
Some embodiments of the utility model are characterized in that a heat exchanger is arranged on a connecting pipeline of the liquid inlet and the liquid source.
The utility model has the technical effects that:
1. according to the utility model, the percolation experiment is carried out in the closed container, and the measuring end is arranged in the closed container, so that the rock core can be subjected to experimental measurement in a high-temperature and high-pressure environment for simulating stratum conditions in the closed container, and compared with a conventional test mode, the measurement result is closer to reality.
2. The measuring end comprises a volume measuring end and a weight measuring end, so that a user can select a proper experiment method according to requirements, or simultaneously perform two methods to study the difference of different methods, and the measuring end has a wider application range compared with a conventional testing device.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
in the figure: 1-imbibition container, 2-container cover, 3-interface tester, 4-tension weight, 5-core to be tested, 6-test ring, 7-gas injection port, 8-gas source, 9-liquid inlet, 10-liquid source, 11-heat exchanger, 12-liquid outlet, 13-temperature control sleeve, 14-temperature control device and 15-control equipment.
Detailed Description
The present utility model will be described in further detail with reference to the following examples and drawings.
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model as claimed, but is merely representative of selected embodiments of the utility model.
Examples
Referring to fig. 1, an oil reservoir imbibition experimental device comprises an imbibition container 1 and a container cover 2, wherein the container cover 2 is detachably arranged at the top of the imbibition container 1, the imbibition container 1 and the container cover 2 form a closed container with a hollow inside, the imbibition container 1 and the container cover 2 can be arranged by adopting the standard of a pressure-bearing container according to the prior art, so that the high-pressure condition in a stratum can be simulated in the imbibition container.
The side of the infiltration vessel 1 is respectively provided with a gas injection port 7, a liquid inlet 9 and a liquid outlet 12 which extend into the hollow part of the interior of the closed vessel from the outside, wherein the gas injection port 7 is connected to a gas source 8, the liquid inlet 9 is connected to a liquid source 10, the gas injection port 7 is used for injecting inert gas such as nitrogen or helium supplied by the gas source 8 into the closed vessel and used for simulating high-pressure conditions of stratum, the liquid inlet 9 is used for injecting wet phase fluid into the interior of the closed vessel, and is usually simulated water which is specially configured for simulating the liquid composition in the stratum, and the liquid outlet 12 is used for discharging the liquid after experiments.
The interface tester 3 and the tension weight 4 which can extend into the hollow part in the closed container are arranged below the container cover 2, the measuring end of the tension weight 4 can be connected with the core 5 to be measured, the control equipment 15 is further arranged outside the imbibition container 1 and is respectively electrically connected with the interface tester 3 and the tension weight 4, the interface tester 3 and the tension weight 4 can be put into use after the container cover 2 and the imbibition container 1 are configured, when the testing method is a weighing method, the core 5 to be measured can be hung below the tension weight 4 to realize on-line monitoring of the core 5 to be measured, when the testing method is a volume method, the relative position of an oil water layer can be monitored on line by using the interface tester 3, and further the oil precipitation amount can be accurately obtained, and the interface tester 3 can adopt testing equipment conventional in the field, such as a radio frequency admittance level meter, and the method is not particularly limited. In addition, because the interface tester 3 and the tension weight are not interfered with each other, the core 5 to be tested can be tested by a weighing method and a volume method at the same time, namely, the core 5 to be tested is hung on the tension weight 4 to monitor the weight change, and the interface tester 3 is used for monitoring the oil quantity change precipitated by the core, so that two results are obtained at the same time, and the two methods are convenient to further study.
In addition, the interface tester 3 and the tension meter 4 are also electrically connected to the control device 15, and the control device 15 can be arranged in a workstation form commonly used in the art, so that the testing process has a high degree of automation.
In this embodiment, the inner side of the imbibition container 1 is further provided with a test ring 6 with a hole diameter smaller than the inner diameter of the imbibition container 1, and the horizontal plane where the test ring 6 is located cuts the measuring ends of the interface tester 3 and the tension weight 4 respectively, as shown in fig. 1, the test ring 6 is located at the position where the interface tester 3 and the tension weight 4 can pass, the main function of the test ring 6 is to generate a larger liquid level difference at the through hole without disturbing the weighing method, and since the test ring 6 has a diameter-reducing structure relative to the inner wall of the imbibition container 1, the rising amplitude generated by the unit volume of liquid when the liquid level rises to the position is obviously improved, so that the interface tester 3 can conveniently obtain more accurate test results, and obviously, the hole diameter of the test ring 6 needs to be larger than or equal to the diameter of the core 5 to be tested, so as to ensure that the core 5 to be tested can smoothly pass through the test ring 6 and be immersed in experimental fluid.
The gas injection port 7 is positioned higher than the test ring 6, the liquid outlet 12 is positioned at the lowest position inside the imbibition container 1, and the liquid level needs to be raised to the position of the test ring 6, so that the gas injection port 7 is arranged above the test ring to avoid interference, and the liquid outlet 12 is positioned at the lowest position inside the imbibition container 1 to facilitate the liquid to be discharged from the imbibition container 1.
In this embodiment, the temperature control sleeve 13 is sleeved on the outer surface of the imbibition container 1, the temperature control sleeve 13 is connected with the temperature control device 14 arranged outside the imbibition container 1, the temperature control device 14 is electrically connected with the control equipment 15, the imbibition container 1 is heated by the temperature control sleeve 13 for simulating the real temperature condition of the stratum, and the temperature control sleeve 13 and the temperature control device 14 can be integrally controlled by the control equipment 15 based on the prior art.
In some embodiments, the connection pipeline between the liquid inlet 9 and the liquid source 10 is provided with a heat exchanger 11, which is used for heating the wet phase fluid injected into the infiltration vessel 1, so that the experimental fluid can be heated in advance, and the temperature inside the infiltration vessel 1 can be controlled more easily.
When the device is used, the structure shown in the figure 1 is assembled, wherein the rock core 5 to be tested is saturated with experimental oil, experimental fluid is injected until the liquid level contacts with the inside of the test ring 6, then air is injected into the imbibition container 1 until the internal part of the imbibition container reaches the test pressure, the temperature is regulated to the experimental temperature, when the volumetric method is required to be adopted for testing, exudation volume data of the experimental oil is collected through the interface tester 3, when the weighing method is required to be adopted for testing, weighing reading change data of the tension weight 4 are collected, after comprehensive analysis is carried out on the data of the two methods in the control equipment 15, the difference between the two methods can be obtained, the application range of the experiment is enlarged, the whole experiment and the data collection process can be uniformly and centrally controlled through the control equipment 15, the test efficiency is higher than that of manual operation alone, and the imbibition container 1 has better high-temperature and high-pressure resistance performance, so that the true test condition of a stratum can be accurately simulated, and the accuracy of a test result is improved.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and should not be construed as limiting the present utility model.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present utility model disclosed in the embodiments of the present utility model should be covered by the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.
Claims (6)
1. The oil reservoir imbibition experimental device is characterized by comprising an imbibition container (1) and a container cover (2), wherein the container cover (2) is detachably arranged at the top of the imbibition container (1), and the two containers form a closed container with a hollow interior;
the side surface of the infiltration vessel (1) is respectively provided with an air injection port (7), a liquid inlet (9) and a liquid outlet (12) which extend into the hollow part of the interior of the closed vessel from the outside, wherein the air injection port (7) is connected to an air source (8), and the liquid inlet (9) is connected to a liquid source (10);
the device comprises a container cover (2), wherein an interface tester (3) and a tension weight (4) which can extend into a hollow part in the closed container are arranged below the container cover (2), a measuring end of the tension weight (4) can be connected with a core (5) to be measured, and a control device (15) is further arranged outside the imbibition container (1) and is electrically connected with the interface tester (3) and the tension weight (4) respectively.
2. The oil reservoir imbibition experimental device according to claim 1, wherein: the inner side surface of the imbibition container (1) is provided with a test ring (6) with the aperture smaller than the inner diameter of the imbibition container (1), and the horizontal plane where the test ring (6) is positioned is respectively used for cutting the measuring ends of the interface tester (3) and the tension weight (4).
3. The oil reservoir imbibition experimental device according to claim 2, wherein: the aperture of the test ring (6) is larger than the diameter of the core (5) to be tested.
4. The oil reservoir imbibition experimental device according to claim 2, wherein: the position of the gas injection port (7) is higher than that of the test ring (6), and the position of the liquid outlet (12) is positioned at the lowest position inside the imbibition container (1).
5. The oil reservoir imbibition experimental device according to claim 1, wherein: the outer surface of the imbibition container (1) is sleeved with a temperature control sleeve (13), the temperature control sleeve (13) is connected with a temperature control device (14) arranged outside the imbibition container (1), and the temperature control device (14) is electrically connected with a control device (15).
6. The oil reservoir imbibition experimental device according to claim 1, wherein: a heat exchanger (11) is arranged on a connecting pipeline of the liquid inlet (9) and the liquid source (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420429478.5U CN220751920U (en) | 2024-03-06 | 2024-03-06 | Oil reservoir imbibition experimental device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420429478.5U CN220751920U (en) | 2024-03-06 | 2024-03-06 | Oil reservoir imbibition experimental device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220751920U true CN220751920U (en) | 2024-04-09 |
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ID=90552660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420429478.5U Active CN220751920U (en) | 2024-03-06 | 2024-03-06 | Oil reservoir imbibition experimental device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220751920U (en) |
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2024
- 2024-03-06 CN CN202420429478.5U patent/CN220751920U/en active Active
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