CN110952964A - Horizontal well water injection profile control model experimental device - Google Patents
Horizontal well water injection profile control model experimental device Download PDFInfo
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- 238000002347 injection Methods 0.000 title claims abstract description 59
- 239000007924 injection Substances 0.000 title claims abstract description 59
- 235000020681 well water Nutrition 0.000 title claims abstract description 20
- 239000002349 well water Substances 0.000 title claims abstract description 20
- 238000004088 simulation Methods 0.000 claims abstract description 50
- 239000011521 glass Substances 0.000 claims abstract description 49
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 45
- 239000010959 steel Substances 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000012544 monitoring process Methods 0.000 claims abstract description 14
- 239000006004 Quartz sand Substances 0.000 claims abstract description 13
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 9
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 23
- 238000002474 experimental method Methods 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 10
- 229920001971 elastomer Polymers 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 239000012153 distilled water Substances 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- 239000004590 silicone sealant Substances 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 2
- 230000000007 visual effect Effects 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 229920006395 saturated elastomer Polymers 0.000 description 6
- 238000011161 development Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000010587 phase diagram Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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- Engineering & Computer Science (AREA)
- Geology (AREA)
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- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses a horizontal well water injection profile control model experimental device, which comprises an injection and production system, a simulation system and a monitoring system, wherein the injection and production system comprises a water injection and production system body and a water injection and profile control system body; the injection-production system comprises a nitrogen pump, an HAS-200 type constant-pressure constant-speed pump, an intermediate container and a six-way pipe; the simulation system comprises a two-dimensional plane oil reservoir physical simulation experiment device, an iron bracket with pulleys and a camera; the two-dimensional plane oil reservoir physical simulation experiment device comprises an upper steel plate, an upper glass plate, a steel groove, a lower glass plate and a lower steel plate, wherein the upper glass plate, the lower glass plate and the steel groove form a sealed cavity, and quartz sand and a horizontal well are arranged in the sealed cavity; three inlet ends of the sealing cavity are respectively provided with a toe end inlet valve, a middle end inlet valve and a heel end inlet valve, and two outlet ends are respectively provided with a toe end outlet valve and a heel end outlet valve; the monitoring system comprises an injection end pressure gauge, an outlet end measuring cylinder and a metering balance. The invention can simulate homogeneous and heterogeneous oil reservoirs and can also carry out visual processing on water drive oil plant drawings.
Description
Technical Field
The invention relates to the field of physical simulation experiment devices, in particular to physical simulation of water injection profile control seepage law of an oil-gas field horizontal well, and more particularly relates to a horizontal well water injection profile control model experiment device.
Background
With the development of the horizontal well technology, the cost of the horizontal well is continuously reduced, and the advantages of the horizontal well relative to a vertical well are gradually obvious. Under the condition, the application of the horizontal well technology in China is gradually wide, and a new application trend appears, wherein the new application trend comprises the development and application of the horizontal well water injection technology. However, although the development of the horizontal well drilling technology is mature day by day, the research on the horizontal well water injection adjustment method and the development rule is not comprehensive and deep enough, the data of field experiments of oil fields are few, effective theoretical guidance is lacked, and the current development requirements cannot be met, the data of the oil field experiments all over the world show that the horizontal well water injection technology can obviously improve the water flooding wave spread coefficient and the extraction degree, compared with a vertical well network, the water injection can be increased by dozens of times, and the oil displacement efficiency of partial areas can be increased by more than twenty-five percent. When the well pattern is not tight and the oil layer is thin, the highest sweep efficiency can reach more than 90%.
In an indoor physical experiment, a horizontal well water injection profile control model is a simulation means with high use frequency. In the horizontal well water injection profile control model, quartz sand with a certain particle size needs to be filled into a two-dimensional plane oil reservoir physical simulation device, sand is filled firstly to seal saturated oil, then water is used for oil displacement, then gel is injected for profile control, and then water is used for oil displacement. The commonly used device can not visually display the water flooding plant diagram, can not flexibly simulate homogeneous or heterogeneous geological conditions, has a plurality of problems, and has complex operation process, time and labor waste.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a horizontal well water injection profile control model experimental device which can simulate homogeneous and heterogeneous oil reservoirs and can perform visual processing on water drive oil plant drawings.
The purpose of the invention is realized by the following technical scheme.
The invention relates to a horizontal well water injection profile control model experimental device, which comprises an injection and production system, a simulation system and a monitoring system;
the injection and production system comprises a nitrogen pump, an HAS-200 type constant-pressure constant-speed pump, intermediate containers and six-way pipes which are sequentially connected through pipelines, the number of the intermediate containers is three, the three intermediate containers are respectively used for water injection, oil injection and profile control, a liquid inlet of each intermediate container is connected with a liquid outlet of the HAS-200 type constant-pressure constant-speed pump, a liquid outlet of each intermediate container is connected to the six-way pipe, and the six-way pipe is connected to an inlet of the simulation system;
the simulation system comprises a two-dimensional plane oil deposit physical simulation experiment device, an iron support with pulleys and a camera, wherein the two-dimensional plane oil deposit physical simulation experiment device is supported by the support to realize rotation at any angle parallel to the bottom end of the support, and the camera is respectively arranged on the upper side and the lower side of the two-dimensional plane oil deposit physical simulation experiment device;
the two-dimensional plane oil reservoir physical simulation experiment device comprises an upper steel plate, an upper glass plate, a steel groove, a lower glass plate and a lower steel plate which are fixedly arranged from top to bottom in sequence, wherein the upper steel plate and the lower steel plate are respectively provided with a grid window, the upper glass plate, the lower glass plate and the steel groove form a sealed cavity together, quartz sand is filled in the sealed cavity, and a horizontal well is arranged in the sealed cavity; the sealing cavity is provided with three inlet ends and two outlet ends, wherein the three inlet ends are respectively provided with a toe end inlet valve, a middle end inlet valve and a heel end inlet valve, and the two outlet ends are respectively provided with a toe end outlet valve and a heel end outlet valve; the inlet end of an inlet valve at the toe end and the inlet end of an inlet valve at the heel end are both directly connected with a horizontal well through a channel, the horizontal well is wound by gauze, and a seam is formed on the wall of the well cylinder by laser to simulate a seam-isolating sieve tube;
the monitoring system comprises an injection end pressure gauge, an outlet end measuring cylinder and a metering balance; the injection end pressure gauges are respectively arranged at three inlet ends of the sealed cavity, the outlet end measuring cylinders are respectively arranged at two outlet ends of the sealed cavity, a metering balance is arranged at the bottom of each outlet end measuring cylinder, and the injection end pressure gauges and the metering balance are connected with a computer on average.
And the ink for liquid in the intermediate container adopts blue ink during the first water drive and adopts black ink during the second water drive, and a displacement phase diagram in the simulation system is visually displayed.
After the experiment is started, a nitrogen pump and an HAS-200 type constant-pressure constant-speed pump are started, distilled water in the pumps enters an intermediate container, a piston in the intermediate container is pushed to move upwards, and liquid in the intermediate container enters a simulation system by using ink.
The middle container is after the ink does not have in the experimentation, need be connected to middle container upside entry with the air supply, the liquid outlet of ink when the water displacement of reservoir oil promptly, then open gas pressure gauge, pour into gas into middle container, rely on the pressure that gas produced, push the piston in the middle container downwards, make the distilled water that begins to pour into flow out middle container, when middle container stops out water, the piston reachs the bottom this moment, can reuse.
The glass plate is characterized in that the upper glass plate and the lower glass plate are transparent organic glass plates, the upper glass plate and the steel groove are sealed with the rubber pad through oil-resistant silicone sealant, and the lower glass plate and the steel groove are sealed with the rubber pad through the oil-resistant silicone sealant.
The upper portion steel system board and the lower part steel system board all adopt latticed steel sheet, all are connected with the steel groove through fastening screw, carry out the compaction to upper portion glass board and lower part glass board and quartz sand, guarantee to seal.
The horizontal well is simulated by adopting a hollow iron phi 6 pipeline; the two-dimensional plane oil deposit physical simulation experiment device is internally filled with quartz sand with different grain diameters so as to simulate an oil deposit with different geological conditions, i.e. homogeneity or heterogeneity.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
(1) the injection-production system, the simulation system and the monitoring system are matched for use, the injection-production system enables water to be injected into the simulation system at a certain flow velocity, the simulation system simulates oil reservoirs with different geological conditions, and the monitoring system monitors pressure at an experimental inlet end and flow data at an experimental outlet end.
(2) The two-dimensional plane oil reservoir physical simulation experiment device is supported by the bracket, can realize rotation at any angle parallel to the bottom end of the bracket, and can bear pressure of 1MPa and resist temperature of 300 ℃; the camera is respectively provided with one camera on the upper side and the lower side of the two-dimensional plane oil deposit physical simulation experiment device so as to record the change condition of the water drive oil plant diagram.
(3) According to the invention, the upper glass plate and the lower glass plate are both transparent organic glass plates, so that the conditions of upper and lower saturated oil and water drive oil front edges of an oil reservoir can be monitored in real time, the upper glass plate, the lower glass plate and the steel tank are sealed with the rubber pads through oil-resistant silicone sealant, the transparent organic glass plates can be in close contact with filled quartz sand through the elastic action of the rubber pads, and the sealing effect is better.
(4) According to the invention, quartz sand with different particle sizes is filled in a sealed cavity formed by the upper glass plate, the lower glass plate and the steel groove together to simulate oil reservoirs with homogeneous or heterogeneous different geological conditions, a horizontal well is arranged in the sealed cavity, the horizontal well is simulated by adopting a hollow iron phi 6 pipeline, the horizontal well is wound by gauze, a seam is formed on the wall of the well by using laser to simulate a seam-separating screen pipe, and meanwhile, residues can be prevented from entering to block the well during the experiment process.
(5) The monitoring system comprises an injection end pressure gauge, an outlet end measuring cylinder and a metering balance, wherein the injection end pressure gauge is used for monitoring pressure data of three parts at the heel end, the middle end and the toe end of the inlet end respectively and can monitor the pressure at the inlet end at any time; the outlet end measuring cylinder is used for recording the volume of liquid displaced from the two-dimensional plane oil reservoir physical simulation experiment device in each time period and searching the relation between pressure and flow; the injection end pressure gauge and the measuring heaven average are connected with the computer, pressure data and output liquid volume (the volume of liquid displaced in a specified time interval) can be recorded for a long time at intervals, artificial workload is reduced, and data accuracy is improved.
(6) The invention can obviously reflect the pressure change around the well bottom when injecting gel to block the high-permeability channel and the position for blocking the high-permeability channel, and is a good choice for researching the water injection profile control seepage rule of the horizontal well.
(7) The invention can not only study homogeneous stratum but also study seepage rule in the displacement process of heterogeneous stratum, visually display oil-water front in the seepage process, monitor the saturation of fluid and visually display the variation of injection condition along the way of the horizontal well with different injection and production well types, different geological parameters and different injection and production systems.
Drawings
FIG. 1 is a schematic diagram of a horizontal well water injection profile control model experimental device of the invention;
FIG. 2 is a schematic diagram of a simulation system according to the present invention;
FIG. 3 is a schematic structural diagram of a two-dimensional planar reservoir physical simulation experiment apparatus according to the present invention;
FIG. 4 is a plan view of a two-dimensional planar reservoir physical simulation experiment apparatus according to the present invention;
FIG. 5 is a side view of a two-dimensional planar reservoir physical simulation experiment apparatus according to the present invention.
Reference numerals: 1 nitrogen pump, 2HAS-200 type constant pressure constant speed pump, 3 middle container, 4 six-way, 5 supports, 6 upper steel plate, 7 upper glass plate, 8 steel groove, 9 lower glass plate, 10 lower steel plate, 11 fastening screws, 12 toe end inlet valve, 13 middle end inlet valve, 14 heel end inlet valve, 15 toe end outlet valve, 16 heel end outlet valve, 17 grid window and 18 inlet end.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 5, the horizontal well water injection profile control model experimental device comprises an injection and production system, a simulation system and a monitoring system, wherein the injection and production system, the simulation system and the monitoring system are used in a matched manner, namely, the injection and production system injects water into the simulation system at a certain flow rate, the simulation system simulates oil reservoirs with different geological conditions, and the monitoring system monitors the pressure at the inlet end and the flow data at the outlet end of the experiment.
The injection-production system comprises a nitrogen pump 1, an HAS-200 type constant-pressure constant-speed pump 2, an intermediate container 3 and a six-way 4. The nitrogen pump 1 is connected with the HAS-200 type constant-pressure constant-speed pump 2 through a pipeline so as to ensure the sufficient pressure of the HAS-200 type constant-pressure constant-speed pump 2 and ensure that the air source in the air bottle is sufficient, and in order to prevent the pump from being damaged, the experimental water is distilled water uniformly. The three intermediate containers 3 are arranged in parallel and are respectively used for water injection, oil injection and profile control agent injection, the liquid inlet of each intermediate container 3 is connected with the liquid outlet of the HAS-200 type constant-pressure constant-speed pump 2, the liquid outlet of each intermediate container 3 is connected to the six-way 4, and the six-way 4 is connected to the inlet of the simulation system.
The ink for liquid in the intermediate container 3 adopts blue ink during the first water drive and adopts black ink during the second water drive, and a displacement phase diagram in the simulation system is visually displayed. After the experiment is started, a nitrogen pump 1 and an HAS-200 type constant-pressure constant-speed pump 2 are started, distilled water in the pumps enters an intermediate container 3, a piston in the intermediate container 3 is pushed to move upwards, and liquid in the intermediate container 3 enters a simulation system by using ink.
The middle container 3 needs to be connected with an air source to an inlet on the upper side of the middle container 3 after ink does not exist in the experimental process, namely, an ink outlet of the ink during water flooding is formed, then the gas pressure gauge is opened, gas is injected into the middle container, a piston in the middle container 3 is pushed downwards by means of pressure generated by the gas, so that distilled water which starts to be injected flows out of the middle container 3, and when the middle container 3 stops water outlet, the piston reaches the lowest end at the moment, and the middle container can be reused.
The simulation system comprises a two-dimensional plane oil reservoir physical simulation experiment device, an iron support 5 with pulleys and a camera. The two-dimensional plane oil deposit physical simulation experiment device is 500mm (length) multiplied by 500mm (width) multiplied by 50mm (height), is supported by the support 5, can realize the rotation of any angle parallel to the bottom end of the support 5, and can bear the pressure of 1MPa and resist the temperature of 300 ℃. The camera is respectively provided with one camera on the upper side and the lower side of the two-dimensional plane oil deposit physical simulation experiment device so as to record the change condition of the water drive oil plant diagram.
Two-dimensional plane oil reservoir physical simulation experiment device is including the fixed upper portion steel board 6, upper portion glass board 7, steel groove 8, lower part glass board 9 and the lower part steel board 10 that sets up from top to bottom in proper order. The upper portion steel system board 6 and lower part steel system board 10 all are provided with grid window 17, upper portion steel system board 6 and lower part steel system board 10 all adopt latticed steel sheet, all are connected with steel groove 8 through fastening screw 11, carry out the compaction to upper portion glass board 7 and lower part glass board 9 and quartz sand, guarantee to seal to make whole device fixed. The upper glass plate 7 and the lower glass plate 9 are transparent organic glass plates, and the conditions of upper and lower saturated oil and water flooding front edges of an oil reservoir can be monitored in real time. The upper glass plate 7 and the steel groove 8 are sealed with the rubber pad through oil-resistant silicone sealant, the lower glass plate 9 and the steel groove 8 are sealed with the rubber pad through the oil-resistant silicone sealant, and the transparent organic glass plate can be in close contact with the filled quartz sand through the elastic action of the rubber pad, so that the sealing effect is better.
The upper glass plate 7, the lower glass plate 9 and the steel groove 8 form a sealed cavity together, and quartz sand with different grain diameters is filled in the sealed cavity to simulate homogeneous or heterogeneous oil reservoirs with different geological conditions. A horizontal well is arranged in the sealing cavity, the horizontal well is simulated by a hollow iron phi 6 pipeline, the horizontal well is wound by gauze, a seam is formed on the wall of the well casing by laser to simulate a seam-separating sieve pipe, and meanwhile, residues can be prevented from entering and blocking the well casing in the experiment process. The capsule is provided with three inlet ports 18 and two outlet ports to facilitate saturated oil completion and to record pressure data at the heel, middle and toe ends of the horizontal well. Three of the inlet ports 18 are provided with a toe inlet valve 12, a middle inlet valve 13 and a heel inlet valve 14, respectively, and two outlet ports are provided with a toe outlet valve 15 and a heel outlet valve 16, respectively. The inlet end of the toe inlet valve 12 and the inlet end of the heel inlet valve 14 are each arranged to communicate directly with the horizontal well via a passage.
The monitoring system comprises an injection end pressure gauge, an outlet end measuring cylinder and a metering balance. The injection end pressure gauges are respectively arranged at three inlet ends 18 of the sealed cavity, and pressure data of three parts are respectively monitored at the heel end, the middle end and the toe end of the inlet ends, so that the pressure at the inlet ends can be monitored at any time. The outlet end measuring cylinders are respectively arranged at two outlet ends of the sealed cavity and used for recording the volume of liquid displaced from the two-dimensional plane oil deposit physical simulation experiment device in each time period and searching the relation between pressure and flow. The bottom of each outlet end measuring cylinder is provided with a measuring balance, the pressure gauge at the injection end and the measuring balance are averagely connected with a computer, pressure data and output liquid amount (the volume of the liquid displaced in a specified time interval) can be recorded for many times at every interval, the artificial workload is reduced, and the accuracy of the data is improved.
The experimental steps generally include sand filling, saturated oil, first water flooding, gel injection profile control, and second water flooding. In use, the output line of the injection and production system is connected to the heel inlet valve and the toe inlet valve 12 and the mid inlet valve 13 are opened, the toe outlet valve 15 and the heel outlet valve 16 are opened simultaneously when oil is saturated, the toe outlet valve 15 is closed during displacement, but the heel outlet valve 16 is opened.
While the present invention has been described in terms of its functions and operations with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise functions and operations described above, and that the above-described embodiments are illustrative rather than restrictive, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope or spirit of the invention as defined by the appended claims.
Claims (7)
1. A horizontal well water injection profile control model experimental device is characterized by comprising an injection and production system, a simulation system and a monitoring system;
the injection-production system comprises a nitrogen pump (1), an HAS-200 type constant-pressure constant-speed pump (2), an intermediate container (3) and a six-way pipe (4) which are sequentially connected through pipelines, the number of the intermediate containers (3) is three, the three intermediate containers are respectively used for water injection, oil injection and agent injection and profile control, a liquid inlet of each intermediate container (3) is connected with a liquid outlet of the HAS-200 type constant-pressure constant-speed pump (2), a liquid outlet of each intermediate container (3) is connected to the six-way pipe (4), and the six-way pipe (4) is connected to an inlet of the simulation system;
the simulation system comprises a two-dimensional plane oil deposit physical simulation experiment device, an iron support (5) with pulleys and a camera, wherein the two-dimensional plane oil deposit physical simulation experiment device is supported by the support (5) to realize rotation at any angle parallel to the bottom end of the support (5), and the camera is respectively arranged on the upper side and the lower side of the two-dimensional plane oil deposit physical simulation experiment device;
the two-dimensional plane oil reservoir physical simulation experiment device comprises an upper steel plate (6), an upper glass plate (7), a steel groove (8), a lower glass plate (9) and a lower steel plate (10) which are fixedly arranged from top to bottom in sequence, wherein grid windows (17) are arranged on the upper steel plate (6) and the lower steel plate (10), the upper glass plate (7), the lower glass plate (9) and the steel groove (8) jointly form a sealed cavity, quartz sand is filled in the sealed cavity, and a horizontal well is arranged in the sealed cavity; the sealed cavity is provided with three inlet ends (18) and two outlet ends, wherein the three inlet ends (18) are respectively provided with a toe end inlet valve (12), a middle end inlet valve (13) and a heel end inlet valve (14), and the two outlet ends are respectively provided with a toe end outlet valve (15) and a heel end outlet valve (16); the inlet end of a toe end inlet valve (12) and the inlet end of a heel end inlet valve (14) are directly connected with a horizontal well through a channel, the horizontal well is wound by gauze, and the wall of the well cylinder is sewed by laser to simulate a crack isolation sieve tube;
the monitoring system comprises an injection end pressure gauge, an outlet end measuring cylinder and a metering balance; the injection end pressure gauges are respectively arranged at three inlet ends of the sealed cavity, the outlet end measuring cylinders are respectively arranged at two outlet ends of the sealed cavity, a metering balance is arranged at the bottom of each outlet end measuring cylinder, and the injection end pressure gauges and the metering balance are connected with a computer on average.
2. The horizontal well water injection profile control model experimental device as claimed in claim 1, wherein the liquid in the intermediate container (3) is directly displayed by using blue ink during the first water flooding and black ink during the second water flooding.
3. The horizontal well water injection profile control model experimental device as claimed in claim 1, wherein after the experiment is started, the nitrogen pump (1) and the HAS-200 type constant-pressure constant-speed pump (2) are started, distilled water in the pumps enters the intermediate container (3) to push the piston in the intermediate container (3) to move upwards, and liquid in the intermediate container (3) enters the simulation system by using ink.
4. The horizontal well water injection profile control model experiment device according to claim 1, wherein after no ink exists in the experiment process, the air source of the intermediate container (3) needs to be connected to an inlet on the upper side of the intermediate container (3), namely a liquid outlet of the ink during water flooding, then the gas pressure gauge is opened, gas is injected into the intermediate container (3), and a piston in the intermediate container (3) is pushed downwards by means of pressure generated by the gas, so that distilled water which starts to be injected flows out of the intermediate container (3), and when the intermediate container (3) stops water outflow, the piston reaches the lowest end at the moment and can be reused.
5. The horizontal well water injection profile control model experimental device according to claim 1, wherein the upper glass plate (7) and the lower glass plate (9) are transparent organic glass plates, the upper glass plate (7) and the steel groove (8) are sealed with a rubber pad through oil-resistant silicone sealant, and the lower glass plate (9) and the steel groove (8) are sealed with the rubber pad through oil-resistant silicone sealant.
6. The horizontal well water injection profile control model experiment device according to claim 1, wherein the upper steel plate (6) and the lower steel plate (10) are both made of latticed steel plates and are connected with the steel groove (8) through fastening screws (11) to compact the upper glass plate (7) and the lower glass plate (9) and quartz sand, so that sealing is guaranteed.
7. The horizontal well water injection profile control model experimental device according to claim 1, wherein the horizontal well is simulated by a hollow iron phi 6 pipeline; the two-dimensional plane oil deposit physical simulation experiment device is internally filled with quartz sand with different grain diameters so as to simulate an oil deposit with different geological conditions, i.e. homogeneity or heterogeneity.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963118A (en) * | 2020-08-25 | 2020-11-20 | 中海石油（中国）有限公司天津分公司 | Two-dimensional visual sand filling experiment model for simulating horizontal well exploitation |
| CN114075956A (en) * | 2020-08-21 | 2022-02-22 | 中国石油化工股份有限公司 | Visual sintering-free flat plate sand filling model device and method |
| CN116044355A (en) * | 2023-03-30 | 2023-05-02 | 中国石油大学(华东) | Visual displacement device simulating non-uniform viscosity field and working method thereof |
| CN117432401A (en) * | 2023-11-13 | 2024-01-23 | 西南石油大学 | Device and method for simulating physical simulation of water plugging of side-bottom water reservoir horizontal well section |
| CN114075956B (en) * | 2020-08-21 | 2024-05-31 | 中国石油化工股份有限公司 | Visual sintering-free flat sand filling model device and method |
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