A deep geothermal reservoir reconstruction simulation experiment device

Abstract

This invention discloses a simulation experimental device for deep geothermal reservoir modification, comprising a cylindrical body, a cylinder cover threaded onto the upper side of the cylindrical body, a rotating cylinder rotatably fitted inside the cylinder cover, the rotating cylinder penetrating through the cylinder cover, a central cylinder fitted inside the rotating cylinder, the central cylinder penetrating through the rotating cylinder, a conical box fixedly connected to the lower side of the central cylinder, the central cylinder and the conical box communicating with each other, an opening on the lower side of the conical box, two sliding rings slidably connected inside the central cylinder, the two sliding rings being fixedly connected by a moving rod, and a central rod also provided inside the central cylinder, the central rod penetrating through the sliding rings and the upper side wall of the conical box. This invention, through the cooperation between the conical box and the central cylinder, completes corresponding material addition operations, thereby enabling the completion of various experiments, improving experimental accuracy, minimizing adverse effects on the experiment, and demonstrating good practical results.

Description

Technical Field

[0001] This invention relates to the field of water-rock reaction and fluid permeation processes, and in particular to a simulation experimental device for deep geothermal reservoir modification. Background Technology

[0002] A geothermal reservoir refers to a stratum, rock mass, or structural zone buried underground with effective porosity and permeability, containing geothermal fluids that can be developed and utilized. Geothermal reservoirs, often simply called thermal reservoirs, store geothermal energy through the convection and enrichment of heat-carrying fluids. Research on geothermal reservoirs begins with establishing a geological model of the geothermal system and acquiring numerous wellhead pumping test data. Analysis of this data determines the water-bearing capacity of the reservoir aquifer, hydrogeological parameters, the radius of influence and expansion of exploitation, and the hydraulic connections between different aquifers, thus establishing a geological model or conceptual model. Then, using fundamental theories such as fluid mechanics, heat transfer, thermodynamics, and mathematics, a numerical model is established to fit the most realistic reservoir parameters. To more accurately predict the geothermal development potential and resource security, multiple experiments are required in actual work to better complete experimental analysis. During these experiments, different materials are often added to meet different experimental requirements. To ensure the normal progress of the experiment, the main methods for adding materials are either by adding them along the edge or by placing them directly on top of the experimental material. While these methods are simple, the actual position of the materials is not very adjustable, making it difficult to accurately determine where the materials will flow. This greatly affects the subsequent experiments and reduces the accuracy of the experimental results. Therefore, this paper proposes a deep geothermal reservoir modification simulation experimental device. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies, such as: using the edge-feeding method for material addition, or directly placing and adding materials on the top of the experimental object. While the overall operation is simple, the actual position of the material is not very adjustable, and the location of the material flow cannot be accurately determined, which greatly affects the subsequent experiments and reduces the accuracy of the experimental results. Therefore, this invention proposes a deep geothermal reservoir modification simulation experimental device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A deep geothermal reservoir stimulation simulation experimental device includes a cylindrical body. A cylindrical cover is threaded onto the upper side of the cylindrical body. A rotating cylinder is rotatably fitted inside the cylindrical cover, passing through the cylindrical cover. A central cylinder is fitted inside the rotating cylinder, passing through the rotating cylinder. A conical box is fixedly connected to the lower side of the central cylinder, communicating with it. The lower side of the conical box has an opening. Two sliding rings are slidably connected inside the central cylinder, and the two sliding rings are fixedly connected by a sliding rod. A central rod is also provided inside the central cylinder, passing through the sliding rings and the conical box. The upper side wall of the conical box is provided with a fixed frame fixedly connected inside the conical box. A rotating rod is rotatably connected inside the fixed frame. A rotating plate is fixedly sleeved on the outer side of the rotating rod. The rotating plate and the fixed frame are matched and opposite to each other. An arc-shaped cylinder is fixedly connected to the upper side of the rotating plate. An arc-shaped rod is slidably sleeved inside the arc-shaped cylinder. The arc-shaped rod is fixedly connected to the side wall of the conical box. The arc-shaped rod is connected to the bottom of the arc-shaped cylinder through a second spring. A fixed box is fixedly connected to the bottom of the conical box. The fixed box is located below the fixed plate and opposite to the rotating plate. A control device for the rotating plate is provided inside the fixed box.

[0006] Preferably, the control device includes two cavities set in the inner sidewall of the conical box. The central rod passes through the upper sidewall of the fixed box. A central ring is rotatably fitted onto the central rod inside the fixed box. The central ring is connected to the upper sidewall of the fixed box via a third spring. Two right-angle rods are symmetrically fixedly connected to the outer side of the central ring. The two right-angle rods pass through the fixed box. A moving frame is fixedly connected to the lower side of the right-angle rods. An adjusting cylinder is rotatably connected inside the fixed box. A third serrated ring is fixedly connected to both the inner and outer sides of the adjusting cylinder. A central block is fixedly connected to the lower side of the central rod. The central block and... The inner third sawtooth ring is matched and oppositely arranged. Two active rods are rotatably connected inside the fixed box. Saw gears are fixedly sleeved on the outer sides of the two active rods. The saw gears and the outer third sawtooth rings are meshed and connected. The inner sidewall of the conical box has two cavities. The two cavities are connected to the fixed box. Driven rods are rotatably connected in the two cavities. The driven rods are connected to the active rods through belts. A contact plate is fixedly connected on the outer side of the belt. The contact plate passes through the cavity. A contact rod is slidably sleeved up and down inside the contact plate. The contact rod is located on the rotating plate and the moving frame and is matched and oppositely arranged.

[0007] Preferably, the bottom of the fixed box is provided with a positioning groove, and a positioning cylinder is slidably sleeved in the positioning groove. The positioning cylinder is engaged and connected to the inner third serrated ring, and the positioning cylinder is connected to the bottom of the fourth spring positioning groove.

[0008] Preferably, a second serrated ring is threaded onto the outer side of the central cylinder, and an annular groove is provided on the upper side of the second serrated ring. Two arc-shaped plates are slidably connected in the annular groove, and a spiral rod is fixedly connected to the upper side of the two arc-shaped plates. The spiral rod is fixedly connected to the cylinder cover.

[0009] Preferably, a first serrated ring is fixedly sleeved on the outer side of the rotating cylinder, and two clamping plates are symmetrically fixedly connected to the upper side of the cylinder cover. Two control rods are slidably sleeved inside the two clamping plates. The two control rods are respectively engaged and connected to the first serrated ring and the second serrated ring. A control plate is fixedly connected to the side of the two control rods away from the central cylinder. The control plate is connected to the clamping plate through a first spring.

[0010] Preferably, two sliding grooves are symmetrically provided on the outer side of the central cylinder, and a sliding plate is slidably connected in the two sliding grooves. The sliding plate is fixedly connected to the inner side wall of the central cylinder.

[0011] Compared with the prior art, the beneficial effects of the present invention are: by cooperating between the conical box and the central cylinder, the corresponding material addition operation can be completed, thereby enabling the completion of various experiments and improving the accuracy of the experiments. During the addition process, the position of the conical box can be adjusted according to the actual working conditions. At the same time, the material discharge position of the conical box is adjustable, further meeting different working needs. The overall operation is simple, with minimal adverse effects on the experiment, and the practical effect is good. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a deep geothermal reservoir stimulation simulation experimental device proposed in this invention;

[0013] Figure 2 This is a schematic diagram showing the connection between the central cylinder and the conical box in a deep geothermal reservoir stimulation simulation experimental device proposed in this invention;

[0014] Figure 3 This is a cross-sectional view of the conical box in a deep geothermal reservoir stimulation simulation experimental device proposed in this invention.

[0015] Figure 4 for Figure 1 Enlarged view of the structure at point A in the middle;

[0016] Figure 5 This is a side-view sectional view of the conical box of a deep geothermal reservoir stimulation simulation experimental device proposed in this invention.

[0017] Figure 6 for Figure 5 Enlarged view of the structure at point B.

[0018] In the diagram: 1. Cylinder body, 2. Cylinder cover, 3. Central cylinder, 4. Rotating cylinder, 5. First serrated ring, 6. Second serrated ring, 7. Arc plate, 8. Recurved rod, 9. Slide plate, 10. Slide groove, 11. Clamping plate, 12. Control plate, 13. Moving ring, 14. Moving rod, 15. Central rod, 16. Conical box, 17. Fixed frame, 18. Rotating plate, 19. Arc rod, 20. Arc cylinder, 21. Annular groove, 22. Control rod, 23. First spring, 24. Second spring, 25. Rotating rod, 26. Fixed box, 27. Central ring, 28. Third spring, 29. Moving frame, 30. Right angle rod, 31. Cavity, 32. Driven rod, 33. Belt, 34. Contact rod, 35. Contact plate, 36. Central block, 37. Adjusting cylinder, 38. Third serrated ring, 39. Driving rod, 40. Saw gear, 41. Fourth spring, 42. Positioning groove, 43. Positioning cylinder. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Reference Figures 1-6 A deep geothermal reservoir dynamometer simulation device includes a cylindrical body 1. A cylinder cover 2 is threaded onto the upper side of the cylindrical body 1. A rotating cylinder 4 is rotatably fitted inside the cylinder cover 2, and the rotating cylinder 4 passes through the cylinder cover 2. A central cylinder 3 is fitted inside the rotating cylinder 4, and the central cylinder 3 passes through the rotating cylinder 4. A conical box 16 is fixedly connected to the lower side of the central cylinder 3, and the central cylinder 3 and the conical box 16 are connected in communication. The lower side of the conical box 16 has an opening. Two sliding rings 13 are slidably connected inside the central cylinder 3, and the two sliding rings 13 are fixedly connected to each other by a moving rod 14. A central rod 15 is also provided inside the central cylinder 3, and the central rod 15 passes through the sliding rings 13 and the upper wall of the conical box 16. A fixed frame 17 is fixedly connected inside the conical box 16. A rotating rod 25 is rotatably connected inside the fixed frame 17. A rotating plate 18 is fixedly sleeved on the outside of the rotating rod 25. The rotating plate 18 and the fixed frame 17 are matched and opposite to each other. An arc-shaped cylinder 20 is fixedly connected to the upper side of the rotating plate 18. An arc-shaped rod 19 is slidably sleeved inside the arc-shaped cylinder 20. The arc-shaped rod 19 is fixedly connected to the side wall of the conical box 16. The arc-shaped rod 19 is connected to the bottom of the arc-shaped cylinder 20 through a second spring 24. A fixed box 26 is fixedly connected to the bottom of the conical box 16. The fixed box 26 is located below the fixed plate and opposite to the rotating plate 18. The fixed box 26 contains a control device for the rotating plate 18.

[0021] The control device includes two cavities 31 set in the inner sidewall of the conical box 16. A central rod 15 is set through the upper sidewall of the fixed box 26. A central ring 27 is rotatably sleeved on the central rod 15 inside the fixed box 26. The central ring 27 is connected to the upper sidewall of the fixed box 26 by a third spring 28. Two right-angle rods 30 are symmetrically fixedly connected to the outer side of the central ring 27. The two right-angle rods 30 are set through the fixed box 26. A moving frame 29 is fixedly connected to the lower side of the right-angle rods 30. An adjusting cylinder 37 is rotatably connected inside the fixed box 26. A third serrated ring 38 is fixedly connected to both the inner and outer sides of the adjusting cylinder 37. A central block 36 is fixedly connected to the lower side of the central rod 15. The central block 36 and the inner third... The sawtooth rings 38 are matched and oppositely arranged. Two active rods 39 are rotatably connected inside the fixed box 26. Saw gears 40 are fixedly sleeved on the outer side of the two active rods 39. The saw gears 40 and the outer third sawtooth rings 38 are meshed and connected. The inner side wall of the conical box 16 has two cavities 31. The two cavities 31 are connected to the fixed box 26. A driven rod 32 is rotatably connected inside the two cavities 31. The driven rod 32 is connected to the active rods 39 through the belt 33. A contact plate 35 is fixedly connected on the outer side of the belt 33. The contact plate 35 is arranged through the cavity 31. A contact rod 34 is slidably sleeved inside the contact plate 35. The contact rod 34 is located on the rotating plate 18 and the moving frame 29 and is matched and oppositely arranged.

[0022] The bottom of the fixed box 26 is provided with a positioning groove 42. A positioning cylinder 43 is slidably sleeved in the positioning groove 42. The positioning cylinder 43 and the inner third serrated ring 38 are engaged and connected. The positioning cylinder 43 is connected to the bottom of the positioning groove 42 by the fourth spring 41. The positioning groove 42 and the positioning cylinder 43 are used to complete the locking and fixing operation of the third serrated ring 38.

[0023] The outer side of the central cylinder 3 is threaded with a second serrated ring 6. The upper side of the second serrated ring 6 is provided with an annular groove 21. Two arc-shaped plates 7 are slidably connected in the annular groove 21. The upper side of the two arc-shaped plates 7 is fixedly connected with a spiral rod 8. The spiral rod 8 and the cylinder cover 2 are fixedly connected to each other to determine and limit the movement trajectory of the second serrated ring 6.

[0024] A first serrated ring 5 is fixedly sleeved on the outer side of the rotating cylinder 4. Two clamping plates 11 are symmetrically fixedly connected to the upper side of the cylinder cover 2. Two control rods 22 are slidably sleeved inside the two clamping plates 11. The two control rods 22 are respectively engaged and connected to the first serrated ring 5 and the second serrated ring 6. A control plate 12 is fixedly connected to the side of the two control rods away from the central cylinder 3. The control plate 12 is connected to the clamping plate 11 through the first spring 23. The first serrated ring 5 and the second serrated ring 6 are fixedly locked and fixed by the control plate 12 and the control rods 22.

[0025] Two sliding grooves 10 are symmetrically provided on the outer side of the central cylinder 3. A sliding plate 9 is slidably connected in the two sliding grooves 10. The sliding plate 9 is fixedly connected to the inner side wall of the central cylinder 3 to determine and limit the movement trajectory of the central cylinder 3 relative to the rotating cylinder 4.

[0026] In this invention, the corresponding raw materials such as stone blocks and the corresponding detectors are poured into the cylinder 1, and the cylinder cover 2 is screwed onto the cylinder 1 to complete the overall installation operation. The corresponding experimental operation then begins. This is existing technology and will not be elaborated further. During the experiment, when a filling operation is required, the specific operation is as follows: First, move the upper control plate 12 away from the central cylinder 3. The control plate 12 stretches the first spring 23 while simultaneously moving the control rod 22 until the connection between the control rod 22 and the second serrated ring 6 is broken. Then, rotate the second serrated ring 6. Under the constraint of the sliding groove 10 and the sliding plate 9, the second serrated ring moves the central cylinder 3 up and down, and the central cylinder 3 moves the conical box 16 up and down. Once the position of the conical box 16 meets the working requirements, release the control plate 12. Under the action of the first spring 23, the control rod 22 engages with the second serrated ring 6 again, thereby completing the adjustment operation of the position of the central cylinder 3 and the conical box 16. Move the lower control plate 12 away from the central cylinder 3. While the control plate 12 stretches the first spring 23, it drives the control rod 22 to move until the connection between the control rod 22 and the first serrated ring 5 is broken. Rotate the first serrated ring 5 to drive the central cylinder 3 to rotate as a whole until the position of the conical box 16 meets the working requirements. Release the control plate 12. Under the action of the first spring 23, the control rod 22 engages with the first serrated ring 5 again.

[0027] After the adjustment is completed, move the center rod 15 downwards. The center rod 15 moves the center block 36 downwards, and the center rod 15 moves the center ring 27 upwards. The center ring 27 stretches the third spring 28, and the center block 36 enters the regulating cylinder 37 and contacts the positioning cylinder 43. Continue moving the center rod 15 until the connection between the positioning cylinder 43 and the inner third serrated ring 38 is broken. Rotate the center rod 15. The center rod 15 drives the third serrated ring 38 to rotate through the center block 36. The inner third serrated ring 38 drives the outer third serrated ring 38 to rotate through the regulating cylinder 37. The outer third serrated ring 38 drives the drive rod 39 to rotate through the serrated ring. The drive rod 39 drives the belt 33. The entire system moves, with belt 33 driving contact plate 35 and contact rod 34 to move until the position of contact rod 34 meets the working requirements. Then, center rod 15 is released, and center rod 15 moves upward as a whole. Center rod 15 drives center ring 27 to move upward, and center ring 27 drives moving frame 29 to move upward through right-angle rod 30. Moving frame 29 drives contact rod 34 to move upward, and contact rod 34 contacts rotating plate 18 and drives rotating plate 18 to rotate around rotating rod 25. Fixed frame 17 is opened, and the material to be added is poured into central cylinder 3. The material enters cylinder 1 through conical box 16, fixed frame 17 and opening, thus completing the corresponding material addition operation.

[0028] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A deep geothermal reservoir reconstruction simulation experiment device comprising a cylinder (1), characterized in that, A cylinder cover (2) is threaded onto the upper side of the cylinder body (1). A rotating cylinder (4) is rotatably fitted inside the cylinder cover (2). The rotating cylinder (4) passes through the cylinder cover (2). A central cylinder (3) is fitted inside the rotating cylinder (4). A conical box (16) is fixedly connected to the lower side of the central cylinder (3). The central cylinder (3) and the conical box (16) are connected in communication. The lower side of the conical box (16) has an opening. Two moving rings (13) are slidably connected up and down inside the central cylinder (3). The two moving rings (13) are fixedly connected by a moving rod (14). The central cylinder (3) is further provided with a central rod (15), which passes through the moving ring (13) and the upper side wall of the conical box (16). A fixed frame (17) is fixedly connected inside the conical box (16), and a rotating rod (25) is rotatably connected inside the fixed frame (17). A rotating plate (18) is fixedly sleeved on the outer side of the rotating rod (25). The rotating plate (18) and the fixed frame (17) are matched and opposite to each other. An arc-shaped cylinder (20) is fixedly connected to the upper side of the rotating plate (18), and an arc-shaped rod (19) is slidably sleeved inside the arc-shaped cylinder (20). The arc-shaped rod (19) and the conical box (16) are connected to each other. 16) The side wall is fixedly connected. The arc rod (19) is connected to the bottom of the arc cylinder (20) through the second spring (24). The bottom of the conical box (16) is fixedly connected to a fixed box (26). The fixed box (26) is located on the lower side of the fixed plate and is opposite to the rotating plate (18). The fixed box (26) is provided with a control device for the rotating plate (18). The outer side of the central cylinder (3) is threaded with a second serrated ring (6). The upper side of the second serrated ring (6) is provided with an annular groove (21). Two arc plates (7) are slidably connected in the annular groove (21). The upper sides of the two arc plates (7) are fixedly connected to each other. A spiral rod (8) is provided, and the spiral rod (8) and the cylinder cover (2) are fixedly connected. A first serrated ring (5) is fixedly sleeved on the outer side of the rotating cylinder (4). Two clamping plates (11) are symmetrically fixedly connected on the upper side of the cylinder cover (2). Two control rods (22) are slidably sleeved in the two clamping plates (11). The two control rods (22) are respectively engaged and contacted with the first serrated ring (5) and the second serrated ring (6). A control plate (12) is fixedly connected on the side of the two control rods (22) away from the central cylinder (3). The control plate (12) is connected to the clamping plate (11) through a first spring (23).

2. The deep geothermal reservoir reconstruction simulation experiment device according to claim 1, characterized in that, The control device includes two cavities (31) set in the inner sidewall of the conical box (16). The central rod (15) is set through the upper sidewall of the fixed box (26). The central rod (15) is rotatably sleeved with a central ring (27) inside the fixed box (26). The central ring (27) is connected to the upper sidewall of the fixed box (26) through a third spring (28). Two right-angle rods (30) are symmetrically fixedly connected to the outer side of the central ring (27). The two right-angle rods (30) are set through the fixed box (26). A moving frame (29) is fixedly connected to the lower side of the right-angle rods (30). An adjusting cylinder (37) is rotatably connected inside the fixed box (26). A third serrated ring (38) is fixedly connected to both the inner and outer sides of the adjusting cylinder (37). A central block (36) is fixedly connected to the lower side of the central rod (15). The central block (36) and the inner third serrated ring are connected to each other. The rings (38) are matched and oppositely arranged. Two active rods (39) are rotatably connected inside the fixed box (26). Saw gears (40) are fixedly sleeved on the outer side of the two active rods (39). The saw gears (40) and the outer third saw tooth ring (38) are meshed and connected. The inner side wall of the conical box (16) is provided with two cavities (31). The two cavities (31) are connected to the fixed box (26). A driven rod (32) is rotatably connected inside the two cavities (31). The driven rod (32) is connected to the active rod (39) through the belt (33). A contact plate (35) is fixedly connected on the outer side of the belt (33). The contact plate (35) passes through the cavity (31). A contact rod (34) is slidably sleeved inside the contact plate (35). The contact rod (34) is located on the rotating plate (18) and the moving frame (29) and is matched and oppositely arranged.

3. The deep geothermal reservoir stimulation simulation experimental device according to claim 2, characterized in that, The bottom of the fixed box (26) is provided with a positioning groove (42), and a positioning cylinder (43) is slidably sleeved in the positioning groove (42). The positioning cylinder (43) and the inner third serrated ring (38) are engaged and connected. The positioning cylinder (43) is connected to the bottom of the positioning groove (42) through the fourth spring (41).

4. The deep geothermal reservoir stimulation simulation experimental device according to claim 1, characterized in that, Two sliding grooves (10) are symmetrically provided on the outer side of the central cylinder (3), and a sliding plate (9) is slidably connected in the two sliding grooves (10). The sliding plate (9) is fixedly connected to the inner side wall of the central cylinder (3).

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