Experimental equipment for simulating fluid flow of fractured-vuggy carbonate reservoir

Abstract

The utility model relates to the technical field of simulation type experiment equipment, in particular to experiment equipment for simulating fluid flow of a fracture-vug type carbonate reservoir, which comprises an experiment table, an experiment box and a water tank, the water tank is fixedly connected to one side of the top end of the experiment table, and a flowing water circulating structure is arranged on one side of the experiment box. And a flowing fluid observation experiment structure is fixedly arranged at the other end of the experiment box. According to the experimental equipment for simulating fluid flowing of the fracture-vug type carbonate reservoir, water resources are saved, and outflow water can be connected with a power supply to start a circulating pump to flow upwards under the guidance of a circulating pipe until circulating water flows back into the water tank again; when the experiment is finished and water flow circulation is not needed, the faucet is opened, the circulating pump is closed, and water can be normally discharged, so that a batch of water can flow back and forth in the experiment box for multiple times for utilization, the water source investment is saved, and the working cost of the experiment equipment for simulating fluid flow of the fracture-vug type carbonate reservoir is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of simulation experimental equipment, in particular to an experimental equipment for simulating fluid flow in fracture-cavity carbonate reservoirs. Background Art

[0002] The experimental equipment for simulating fluid flow in fractured-cavity carbonate reservoirs mainly builds a carbonate reservoir structure in a natural environment in proportion on a laboratory table, and then continuously injects water into the fractures and cavities inside the carbonate reservoir. The flow of water in the fractures and cavities is used to restore the flow of fluid in the fractures and cavities of the carbonate reservoir in the natural environment, so that the carbonate reservoir in the natural environment can be accurately analyzed in the laboratory.

[0003] For example, the authorization announcement number "CN219694500U" is named as an experimental equipment for simulating the flow of fluid in fracture-cavity carbonate reservoirs. The flow rate of water in a certain area in the fracture-cavity can be changed by pressing down the partition control plate. According to the change of the flow rate in the local area, the carbonate reservoir in the area can be observed in detail, making the experimental effect more accurate. However, the existing experimental equipment for simulating the flow of fluid in fracture-cavity carbonate reservoirs, after the external water source is injected into the simulated fracture, is directly discharged at the other end. Therefore, a large amount of water is consumed each time an experiment is conducted, and the observation time required for each experiment is also relatively long, which further increases the waste of water resources and increases the cost of using the experimental equipment for simulating the flow of fluid in fracture-cavity carbonate reservoirs.

[0004] At the same time, the existing experimental equipment for simulating fluid flow in fracture-cavity carbonate reservoirs requires staff to observe the flow of water in the simulated fracture-cavity carbonate reservoirs in real time during the experiment to judge the experimental results. However, water flow is generally transparent, and the flow speed and flow conditions of transparent water cannot be seen much differently or differently by human eyes. Therefore, the experimental results of the existing experimental equipment for simulating fluid flow in fracture-cavity carbonate reservoirs are not ideal. Utility Model Content

[0005] The purpose of the utility model is to solve the problems of high cost and poor experimental effect of existing experimental equipment for simulating fluid flow in fracture-cavity carbonate reservoirs, and to propose an experimental equipment for simulating fluid flow in fracture-cavity carbonate reservoirs.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] An experimental device for simulating fluid flow in fracture-cavity carbonate reservoirs is designed, comprising an experimental platform, an experimental box, and a water tank. The water tank is fixedly connected to one side of the top of the experimental platform, and the experimental box is fixedly connected to the other side of the top of the experimental platform. One side of the experimental box is provided with a flowing water circulation structure, and the other end of the experimental box is fixedly provided with a flowing fluid observation experimental structure. The interior of the water tank is provided with a clear experimental structure.

[0008] Preferably, the flowing water circulation structure includes an outlet pipe and a circulation pipe, the outlet pipe is fixedly connected to one end of the experimental box, the other end of the outlet pipe is fixedly connected to a drain pipe, the top of the drain pipe is fixedly connected to a circulation pipe, a circulation pump is fixedly installed above the circulation pipe, and the lower end outer wall of the drain pipe is fixedly connected to a faucet.

[0009] Preferably, the other end of the circulation pipe is fixedly connected to the top of the water tank.

[0010] Preferably, the flow fluid observation experimental structure includes a lower carbonate reservoir and a water inlet pipe, the water inlet pipe is fixedly connected to the outer wall of the other end of the experimental box, the lower carbonate reservoir is fixedly installed at the lower end of the interior of the experimental box, the upper part of the interior of the experimental box is fixedly connected to the upper part, the outside of the water inlet pipe is fixedly connected to a water pump, the other end of the water inlet pipe is fixedly connected to the interior of the water tank, and the outer wall of the water inlet pipe is fixedly sleeved with a sealing ring.

[0011] Preferably, the clear experimental structure includes a motor and a background plate, the motor is fixedly connected to the top of the water tank, the lower end of the output shaft of the motor is fixedly connected to a transmission rod, the outer wall of the transmission rod is fixedly connected to a plurality of stirring blades, one end of the outer wall of the water tank is fixedly connected to an external pipe, and the background plate is fixedly installed on the rear side of the inner wall of the experimental box.

[0012] Preferably, a transparent observation plate is fixedly connected to the front end of the outer wall of the experimental box.

[0013] The utility model proposes an experimental device for simulating fluid flow in fracture-cavity carbonate reservoirs, which has the beneficial effects of saving water resources, allowing outflowing water to flow upward under the guidance of a circulation pipe by connecting a power supply to start a circulation pump until the circulating water flows back to the inside of the water tank again. When the experiment is over and water circulation is no longer needed, the faucet is opened and the circulation pump is closed to discharge the water normally. In this way, a batch of water can flow back and forth multiple times in the experimental box for utilization, saving water resources and reducing the working cost of the experimental device for simulating fluid flow in fracture-cavity carbonate reservoirs.

[0014] The water tank can be replenished with water through an external pipe, or non-toxic red dye can be poured into the water tank. After the dye is poured in, connect the power supply to start the motor, and the motor will drive the transmission rod below to rotate. The high-speed rotating transmission rod uses the larger stirring blade on the outside to fully mix the red dye with the water in the water tank, so that the water flowing into the experimental box will not be a transparent water flow. The background plate is fixedly installed on the back side of the inner wall of the experimental box. The background plate is made of white plastic plate. The flow of red flowing water can be seen more clearly against the background of the white background, which improves the experimental effect of the experimental equipment for simulating the flow of fluid in fracture-cavity carbonate reservoirs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0016] Figure 2 for Figure 1 A front cross-sectional schematic diagram of ;

[0017] Figure 3 for Figure 1 Schematic diagram of the top surface;

[0018] Figure 4 for Figure 2 Enlarged cross-sectional view of part A in the middle;

[0019] Figure 5 for Figure 2 Enlarged cross-sectional view of part B in the middle;

[0020] Figure 6 for Figure 2 Enlarged cross-sectional view of part C in the middle.

[0021] In the figure: 1. Experimental table, 2. Experimental box, 3. Water tank, 4. Transparent observation board, 5. Flowing water circulation structure, 51. Outlet pipe, 52. Drain pipe, 53. Faucet, 54. Circulation pipe, 55. Circulation pump, 6. Flow fluid observation experimental structure, 61. Lower carbonate reservoir, 62. Upper carbonate reservoir, 63. Inlet pipe, 64. Water pump, 65. Sealing ring, 7. Clear experimental structure, 71. Motor, 72. External pipe, 73. Transmission rod, 74. Stirring blade, 75. Background board. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] Example 1:

[0024] See also Figures 1-6In this embodiment, an experimental device for simulating the flow of fluid in a fracture-cavity carbonate reservoir is provided, including an experimental platform 1, an experimental box 2 and a water tank 3. The water tank 3 is fixedly connected to one side of the top of the experimental platform 1. The water tank 3 is made of stainless steel. The water tank 3 is supported on one side above the experimental platform 1 and is used to hold flowing water. The experimental box 2 is fixedly connected to the other side of the top of the experimental platform 1. The experimental box 2 is made of a sealed stainless steel plate and is used to install carbonate reservoir materials for simulation experiments. A flowing water circulation structure 5 is provided on one side of the experimental box 2, and a flowing fluid observation experimental structure 6 is fixedly provided at the other end of the experimental box 2. A clear experimental structure 7 is provided inside the water tank 3.

[0025] The flowing water circulation structure 5 includes an outlet pipe 51 and a circulation pipe 54. The outlet pipe 51 is fixedly connected to one end of the experimental box 2. The outlet pipe 51 is used to drain the flowing water inside the experimental box 2. The other end of the outlet pipe 51 is fixedly connected to a drain pipe 52. The drain pipe 52 is vertically arranged to guide the water flow downward, but when the faucet 53 is closed, the water will not be discharged normally. The top of the drain pipe 52 is fixedly connected to a circulation pipe 54, and a circulation pump 55 is fixedly installed above the circulation pipe 54. In order to save water resources, the outflowing water can be started by connecting the power supply to the circulation pump 55 to flow upward under the guidance of the circulation pipe 54 until the circulating water returns to the water tank 3 again. The outer wall of the lower end of the drain pipe 52 is fixedly connected to the faucet 53. When the experiment is over and water circulation is no longer needed, the faucet 53 is opened and the circulation pump 55 is closed to discharge the water normally. The other end of the circulation pipe 54 is fixedly connected to the top of the water tank 3;

[0026] The outlet pipe 51 is used to drain the flowing water inside the experimental box 2. The vertical setting of the drain pipe 52 can guide the water flow downward, but the water will not be discharged normally when the faucet 53 is closed. In order to save water resources, the outflowing water can be connected to the power supply to start the circulation pump 55 to flow upward under the guidance of the circulation pipe 54 until the circulating water returns to the water tank 3 again. The lower end outer wall of the drain pipe 52 is fixedly connected to the faucet 53. When the experiment is over and water circulation is no longer needed, the faucet 53 is opened and the circulation pump 55 is closed to discharge the water normally. In this way, a batch of water can be circulated back and forth multiple times inside the experimental box 2, saving water input and reducing the working cost of the experimental equipment for simulating the flow of fluid in fracture-cavity carbonate reservoirs.

[0027] The flow fluid observation experimental structure 6 includes a lower carbonate reservoir 61 and a water inlet pipe 63. The water inlet pipe 63 is fixedly connected to the outer wall of the other end of the experimental box 2. The lower carbonate reservoir 61 is fixedly installed at the lower end of the interior of the experimental box 2. The lower carbonate reservoir 61 is filled in the lower part of the interior of the experimental box 2 to receive the flow of water. The upper part of the interior of the experimental box 2 is fixedly connected to the upper part. The upper carbonate reservoir 62 is filled in the upper part of the experimental box 2 to limit and guide the flow of water. The outside of the water inlet pipe 63 is fixedly connected to a water pump 64.

[0028] The other end of the water inlet pipe 63 is fixedly connected to the inside of the water tank 3. The water inlet pipe 63 is connected to the experimental box 2 and the inside of the water tank 3 through a water pump 64. After the water pump 64 is connected to the power supply and turned on, the water stored in the water tank 3 that has been circulated and refluxed can be transported to the inside of the experimental box 2. The outer wall of the water inlet pipe 63 is fixedly sleeved with a sealing ring 65. The sealing ring 65 is made of rubber material. The sealing ring 65 can be filled on the outer wall of the water inlet pipe 63, which can also reduce the occurrence of water leakage at the end of the experimental box 2. The front end of the outer wall of the experimental box 2 is fixedly connected with a transparent observation panel 4. The transparent observation panel 4 is made of transparent tempered glass. The transparent observation panel 4 will not interfere with the staff's normal viewing of the experimental results.

[0029] Working principle:

[0030] When using experimental equipment to simulate fluid flow in fracture-cavity carbonate reservoirs, an actual fracture-cavity carbonate reservoir structure is artificially simulated in the laboratory at equal proportions. Then, flowing water is artificially filled into the fractures and cavities. Based on the speed of water flowing inside the fracture-cavity carbonate reservoir, the flow of water in the fractures and cavities is directly observed, and the data is recorded and analyzed in real time, thereby achieving the purpose of the experiment;

[0031] Circulating water flow utilization structure of experimental equipment for simulating fluid flow in fracture-cavity carbonate reservoirs:

[0032] The outlet pipe 51 is used to drain the flowing water inside the experimental box 2. The vertical arrangement of the drain pipe 52 can guide the water flow downward, but when the faucet 53 is closed, the water will not be discharged normally. In order to save water resources, the outflowing water can be connected to the power supply to start the circulation pump 55 to flow upward under the guidance of the circulation pipe 54 until the circulating water flows back to the water tank 3 again. The outer wall of the lower end of the drain pipe 52 is fixedly connected to the faucet 53. When the experiment is over and the water circulation is no longer needed, the faucet 53 is opened and the circulation pump 55 is closed to discharge the water normally. In this way, a batch of water can be circulated back and forth multiple times inside the experimental box 2, saving water input;

[0033] Experimental structure of the experimental equipment for simulating fluid flow in fracture-cavity carbonate reservoirs:

[0034] The lower carbonate reservoir 61 is filled in the lower part of the experimental box 2 to receive the flow of water, and the upper carbonate reservoir 62 is filled in the upper part of the experimental box 2 to limit and guide the flow of water. The water inlet pipe 63 is connected to the experimental box 2 and the inside of the water tank 3 through the water pump 64. After the water pump 64 is connected to the power supply and turned on, the water stored in the water tank 3 that has been circulated back can be transported to the inside of the experimental box 2. The sealing ring 65 is made of rubber material. The sealing ring 65 can be filled on the outer wall of the water inlet pipe 63, which can also reduce the occurrence of water leakage at the end of the experimental box 2. The front end of the outer wall of the experimental box 2 is fixedly connected with a transparent observation panel 4. The transparent observation panel 4 is made of transparent tempered glass. The transparent observation panel 4 will not interfere with the staff's normal viewing of the experimental results.

[0035] Example 2:

[0036] See also Figures 1-6 In this embodiment, an experimental device for simulating fluid flow in fracture-cavity carbonate reservoirs includes a clear experimental structure 7, a motor 71 and a background plate 75. The motor 71 is fixedly connected to the top of the water tank 3. The motor 71 is a servo motor. When selecting a servo motor, you can choose a motor model that can meet the use requirements. The lower end of the output shaft of the motor 71 is fixedly connected to a transmission rod 73. The outer wall of the transmission rod 73 is fixedly connected to a plurality of stirring blades 74. One end of the outer wall of the water tank 3 is fixedly connected to an external pipe 72. The external pipe 72 can be used to replenish water to the water tank 3, and can also be used to pour non-toxic red dye into the water tank 3.

[0037] After the dye is poured in, the power supply is connected to start the motor 71, and the motor 71 drives the transmission rod 73 below to rotate. The high-speed rotating transmission rod 73 uses the larger stirring blade 74 on the outside to fully mix the red dye in the water in the water tank 3, so that the water flowing into the inside of the experimental box 2 will not be a transparent water flow. The background plate 75 is fixedly installed on the rear side of the inner wall of the experimental box 2. The background plate 75 is made of a white plastic plate. The flow of the red flowing water can be seen more clearly against the background of the white plate 75.

[0038] The external pipe 72 can be used to replenish the water source of the water tank 3, or non-toxic red dye can be poured into the water tank 3. After the dye is poured in, the power supply is connected to start the motor 71. The motor 71 will drive the transmission rod 73 below to rotate. The high-speed rotating transmission rod 73 uses the larger stirring blade 74 on the outside to fully mix the red dye with the water in the water tank 3. In this way, the water flowing into the inside of the experimental box 2 will not be a transparent water flow. The background plate 75 is fixedly installed on the rear side of the inner wall of the experimental box 2. The background plate 75 is made of a white plastic plate. The flow of red flowing water can be seen more clearly against the background of the white background plate 75, thereby improving the experimental effect of the experimental equipment for simulating the flow of fluid in fracture-cavity carbonate reservoirs.

[0039] Working principle:

[0040] The external pipe 72 can be used to replenish the water source of the water tank 3, or non-toxic red dye can be poured into the water tank 3. After the dye is poured in, the power supply is connected to start the motor 71. The motor 71 will drive the transmission rod 73 below to rotate. The high-speed rotating transmission rod 73 uses the larger stirring blade 74 on the outside to fully mix the red dye with the water in the water tank 3. In this way, the water flowing into the inside of the experimental box 2 will not be a transparent water flow. The background plate 75 is fixedly installed on the rear side of the inner wall of the experimental box 2. The background plate 75 is made of white plastic plate. The flow of red flowing water can be seen more clearly against the background plate 75.

[0041] While the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. An experimental device for simulating fluid flow in a fracture-cavity carbonate reservoir, comprising an experimental platform (1), an experimental box (2) and a water tank (3), wherein the water tank (3) is fixedly connected to one side of the top of the experimental platform (1), and the experimental box (2) is fixedly connected to the other side of the top of the experimental platform (1), characterized in that: A flowing water circulation structure (5) is provided on one side of the experimental box (2), a flowing fluid observation experimental structure (6) is fixedly provided on the other end of the experimental box (2), and a clear experimental structure (7) is provided inside the water tank (3).

2. The experimental device for simulating fluid flow in fracture-cavity carbonate reservoirs according to claim 1, characterized in that: The flowing water circulation structure (5) comprises a water outlet pipe (51) and a circulation pipe (54), wherein the water outlet pipe (51) is fixedly connected to one end of the experimental box (2), and the other end of the water outlet pipe (51) is fixedly connected to a drain pipe (52), the upper part of the drain pipe (52) is fixedly connected to a circulation pipe (54), the upper part of the circulation pipe (54) is fixedly installed with a circulation pump (55), and the lower end outer wall of the drain pipe (52) is fixedly connected to a faucet (53).

3. The experimental device for simulating fluid flow in fracture-cavity carbonate reservoirs according to claim 2, characterized in that: The other end of the circulation pipe (54) is fixedly connected to the top of the water tank (3).

4. The experimental device for simulating fluid flow in fracture-cavity carbonate reservoirs according to claim 1, characterized in that: The flow fluid observation experimental structure (6) comprises a lower carbonate reservoir (61) and a water inlet pipe (63), wherein the water inlet pipe (63) is fixedly connected to the outer wall of the other end of the experimental box (2), the lower carbonate reservoir (61) is fixedly installed at the lower end of the interior of the experimental box (2), and the upper part of the interior of the experimental box (2) is fixedly connected to an upper carbonate reservoir (62), the outer side of the water inlet pipe (63) is fixedly connected to a water pump (64), the other end of the water inlet pipe (63) is fixedly connected to the interior of the water tank (3), and the outer wall of the water inlet pipe (63) is fixedly sleeved with a sealing ring (65).

5. The experimental device for simulating fluid flow in fracture-cavity carbonate reservoirs according to claim 1, characterized in that: The clear experimental structure (7) comprises a motor (71) and a background plate (75), wherein the motor (71) is fixedly connected to the top of the water tank (3), the lower end of the output shaft of the motor (71) is fixedly connected to a transmission rod (73), the outer wall of the transmission rod (73) is fixedly connected to a plurality of stirring blades (74), one end of the outer wall of the water tank (3) is fixedly connected to an external pipe (72), and the background plate (75) is fixedly installed on the rear side of the inner wall of the experimental box (2).

6. The experimental device for simulating fluid flow in fracture-cavity carbonate reservoirs according to claim 1, characterized in that: A transparent observation plate (4) is fixedly connected to the front end of the outer wall of the experimental box (2).

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