Fracturing water injection equipment for drainage and mining of deep geothermal reservoir

Abstract

The utility model discloses fracturing water injection equipment for drainage and mining of deep geothermal reservoirs, which comprises a fixing frame, the lower end of an inner cavity of the fixing frame is fixedly connected with a supporting transverse plate, the top of the supporting transverse plate is fixedly connected with a filter shell, and the left side of the filter shell is fixedly connected with an input pipe. Through the arrangement of the filter plate, overlarge sand grains in fracturing fluid conveyed into the fracturing pump set through the liquid inlet pipe, the sealing shell, the filter shell and the input pipe can be filtered, and the situation that the fracturing effect in the drainage and mining process of a deep geothermal reservoir is affected due to the fact that the sand grains in the fracturing fluid are overlarge is effectively avoided; meanwhile, through the arrangement of a driving motor, a rotating shaft, a fixed box, a first bevel gear, a second bevel gear, a rotating rod and a grinding roller, sand grains filtered at the top of a filter plate can be effectively ground, and the ground sand grains can be conveyed to a fracturing pump set along with flowing of fracturing fluid; and the filter plate is effectively prevented from being blocked by larger sand grains.

Description

Technical Field

[0001] This utility model relates to the field of geothermal resource development and utilization technology, specifically a fracturing and water injection device for draining deep geothermal reservoirs. Background Technology

[0002] With the increasing scarcity of traditional energy sources and the growing emphasis on environmental protection, geothermal resources, as a clean and renewable energy source, have received increasing attention. Deep geothermal reservoirs contain abundant geothermal resources, but due to their large burial depth and dense rocks, their development is quite difficult. In the development of deep geothermal reservoirs, fracturing and water injection are key steps. Through fracturing operations, cracks can be formed in the rocks, increasing the permeability of the rocks and thus improving the flow performance of geothermal fluids. Water injection operations involve injecting fluids into the geothermal reservoir to maintain reservoir pressure and promote the continuous production of geothermal fluids.

[0003] Currently, when draining deep geothermal reservoirs, the front end of the fracturing pump set lacks the function of filtering the fracturing fluid. When there are excessively coarse sand particles in the fracturing fluid, the sand particles may not be able to enter the fracture smoothly or may be unevenly distributed in the fracture, thereby affecting the fracturing effect and reservoir permeability. Utility Model Content

[0004] The purpose of this invention is to provide a fracturing and water injection device for deep geothermal reservoir drainage, which has the advantage of being able to filter the fracturing fluid during the fracturing and water injection process, thus avoiding the fracturing effect caused by excessively large sand particles in the fracturing fluid.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fracturing and water injection device for deep geothermal reservoir drainage, comprising a fixed frame, a supporting horizontal plate fixedly connected to the lower end of the inner cavity of the fixed frame, a filter shell fixedly connected to the top of the supporting horizontal plate, an input pipe fixedly connected to the left side of the filter shell, a fracturing pump assembly fixedly installed to the left side of the input pipe, a filter plate fixedly installed to the upper end of the inner cavity of the filter shell, a sealing shell fixedly installed to the top of the filter shell by bolts, an inlet pipe fixedly connected to the right side of the sealing shell, and an outer... A fixed box is fixedly connected to the top of the surface. A rotating rod is movably connected between the bottom of the inner cavity of the fixed box and the top of the inner cavity of the sealed shell through a bearing. A crushing roller is movably connected to the lower end of the rotating rod through a bearing. The bottom of the crushing roller is movably connected to the top of the filter plate. A second bevel gear is fixedly installed on the top of the rotating rod. A drive motor is fixedly installed on the back of the fixed box. A rotating shaft is fixedly installed at the output end of the drive motor. The front surface of the rotating shaft is movably connected to the inner cavity of the fixed box through a bearing. A first bevel gear is fixedly installed on the surface of the rotating shaft.

[0006] As a preferred embodiment, a threaded sleeve is movably connected to the middle of the top of the fixing frame via a bearing, and an adjusting screw is threadedly connected to the inner cavity of the threaded sleeve. The bottom of the adjusting screw is fixedly connected to the middle of the top of the outer surface of the fixing box.

[0007] As a preferred embodiment, the outer surface of the threaded sleeve is fixedly connected with a handle, and the number of handles is four.

[0008] As a preferred embodiment, both ends of the top of the fixing frame are movably connected to guide slide rods, and the bottom of the guide slide rods is fixedly connected to the top of the outer surface of the fixing box.

[0009] As a preferred embodiment, a support base plate is fixedly connected to the bottom of the fixing frame, a support frame is fixedly connected to the top left end of the support base plate, and the upper end of the support frame is fixedly installed at the lower end of the fracturing pump unit.

[0010] As a preferred embodiment, a rubber sealing gasket is fixedly connected to the bottom of the sealing shell, and the bottom of the rubber sealing gasket is movably connected to the top of the filter shell.

[0011] As a preferred embodiment, the first bevel gear meshes with the second bevel gear.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model, through the setting of the filter plate, can filter out excessively large sand particles in the fracturing fluid transported to the fracturing pump unit through the inlet pipe, sealing shell, filter shell, and input pipe. This effectively avoids the sand particles in the fracturing fluid being too large and affecting the fracturing effect during the deep geothermal reservoir drainage process. At the same time, through the setting of the drive motor, rotating shaft, fixed box, first bevel gear, second bevel gear, rotating rod, and crushing roller, the sand particles filtered on the top of the filter plate can be effectively crushed. The crushed sand particles can be transported to the fracturing pump unit with the flow of fracturing fluid, thus effectively avoiding the filter plate being blocked by large sand particles and ensuring the flowability of fracturing fluid during the transportation process.

[0014] 2. This utility model, through the design of a threaded sleeve and an adjusting screw, allows personnel to move the adjusting screw upwards by rotating the threaded sleeve during subsequent disassembly of the sealing shell and filter shell. The movement of the adjusting screw then moves the fixed box and the sealing shell upwards until the sealing shell and filter shell can be opened. This effectively avoids the need for manual lifting of the sealing shell during filter plate maintenance, greatly facilitating the maintenance work. The handle facilitates the rotation of the threaded sleeve, and the guide rod guides the fixed box, preventing it from rotating during movement. The supporting base plate and support frame provide overall support, and the rubber sealing gasket effectively improves the sealing performance between the filter shell and the sealing shell. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present utility model;

[0016] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0017] Figure 3 This is a partial cross-sectional view of the front of the fixing frame of this utility model;

[0018] Figure 4 This utility model Figure 3 A magnified view of section A in the image.

[0019] In the diagram: 1. Fracturing pump unit; 2. Support frame; 3. Support base plate; 4. Input pipe; 5. Fixing frame; 6. Filter shell; 7. Support cross plate; 8. Inlet pipe; 9. Sealing shell; 10. Fixing box; 11. Adjusting screw; 12. Threaded sleeve; 13. Rotating shaft; 14. Guide slide rod; 15. Drive motor; 16. Rubber sealing gasket; 17. Rotating rod; 18. Filter plate; 19. Crushing roller; 20. First bevel gear; 21. Second bevel gear. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0022] Example 1:

[0023] Please see Figures 1-4 As shown, this utility model provides a fracturing and water injection device for deep geothermal reservoir drainage, including a fixed frame 5. A supporting horizontal plate 7 is fixedly connected to the lower end of the inner cavity of the fixed frame 5. A filter shell 6 is fixedly connected to the top of the supporting horizontal plate 7. An input pipe 4 is fixedly connected to the left side of the filter shell 6. A fracturing pump set 1 is fixedly installed on the left side of the input pipe 4. A filter plate 18 is fixedly installed at the upper end of the inner cavity of the filter shell 6. A sealing shell 9 is fixedly installed on the top of the filter shell 6 by bolts. An inlet pipe 8 is fixedly connected to the right side of the sealing shell 9. A fixing box 10 is fixedly connected to the top of the outer surface of the sealing shell 9. A rotating rod 17 is movably connected between the bottom of the inner cavity of the fixed box 10 and the top of the inner cavity of the sealed shell 9 via a bearing. A crushing roller 19 is movably connected to the lower end of the rotating rod 17 via a bearing. The bottom of the crushing roller 19 is movably connected to the top of the filter plate 18. A second bevel gear 21 is fixedly installed on the top of the rotating rod 17. A drive motor 15 is fixedly installed on the back of the fixed box 10. A rotating shaft 13 is fixedly installed at the output end of the drive motor 15. The front surface of the rotating shaft 13 is movably connected to the inner cavity of the fixed box 10 via a bearing. A first bevel gear 20 is fixedly installed on the surface of the rotating shaft 13.

[0024] In this technical solution, the filter plate 18 can filter out excessively large sand particles in the fracturing fluid transported to the fracturing pump group 1 through the inlet pipe 8, sealing shell 9, filter shell 6, and input pipe 4. This effectively prevents the sand particles in the fracturing fluid from being too large and affecting the fracturing effect during the deep geothermal reservoir drainage process. At the same time, the drive motor 15, rotating shaft 13, fixed box 10, first bevel gear 20, second bevel gear 21, rotating rod 17, and crushing roller 19 can effectively crush the sand particles filtered at the top of the filter plate 18. The crushed sand particles can then be transported to the fracturing pump group 1 along with the flow of the fracturing fluid, effectively preventing the filter plate 18 from being blocked by large sand particles and ensuring the flowability of the fracturing fluid during transportation.

[0025] Example 2:

[0026] Based on Embodiment 1, this utility model is as follows: Figures 1-4As shown, a threaded sleeve 12 is movably connected to the middle of the top of the fixed frame 5 via a bearing. An adjusting screw 11 is threadedly connected to the inner cavity of the threaded sleeve 12. The bottom of the adjusting screw 11 is fixedly connected to the middle of the top of the outer surface of the fixed box 10. A throttle is fixedly connected to the outer surface of the threaded sleeve 12, and there are four throttles. Guide slide rods 14 are movably connected to both ends of the top of the fixed frame 5. The bottom of the guide slide rod 14 is fixedly connected to the top of the outer surface of the fixed box 10. A support base plate 3 is fixedly connected to the bottom of the fixed frame 5. A support frame 2 is fixedly connected to the left end of the top of the support base plate 3. The upper end of the support frame 2 is fixedly installed to the lower end of the fracturing pump group 1. A rubber sealing gasket 16 is fixedly connected to the bottom of the sealing shell 9. The bottom of the rubber sealing gasket 16 is movably connected to the top of the filter shell 6. The first bevel gear 20 meshes with the second bevel gear 21.

[0027] In this technical solution, the threaded sleeve 12 and adjusting screw 11 allow personnel to rotate the threaded sleeve 12 during the subsequent disassembly of the sealing shell 9 and the filter shell 6, thereby moving the adjusting screw 11 upwards. The movement of the adjusting screw 11 then moves the fixed box 10 and the sealing shell 9 upwards until the sealing shell 9 and the filter shell 6 can be opened. This effectively avoids the need for manual lifting of the sealing shell 9 during filter plate 18 maintenance, greatly facilitating maintenance work. The throttle handle allows for easy rotation of the threaded sleeve 12, and the guide slide rod 14 guides the fixed box 10, preventing it from rotating during movement. The support base plate 3 and support frame 2 provide overall support, and the rubber sealing gasket 16 effectively improves the sealing performance between the filter shell 9 and the sealing shell 6.

[0028] The working principle of this utility model is as follows: By setting the filter plate 18, excessively large sand particles in the fracturing fluid transported to the fracturing pump group 1 through the inlet pipe 8, sealing shell 9, filter shell 6, and input pipe 4 can be filtered, effectively preventing the sand particles in the fracturing fluid from being too large and affecting the fracturing effect during the deep geothermal reservoir drainage process. At the same time, by starting the drive motor 15, the rotating shaft 13 can be driven to rotate along the bearing on the fixed box 10. The rotation of the rotating shaft 13 can drive the first bevel gear 20 to rotate, and the rotation of the first bevel gear 20 can drive the second bevel gear 21, the rotating rod 17, and the crushing roller 19 to rotate. Under the action of the rotation of the crushing roller 19, the sand particles filtered on the top of the filter plate 18 can be effectively crushed, so that the crushed sand particles can be transported to the fracturing pump group 1 with the flow of fracturing fluid, thus effectively preventing the filter plate 18 from being blocked by large sand particles and ensuring the flow of fracturing fluid during the transportation process.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A fracturing water injection apparatus for deep geothermal reservoir drainage, comprising a fixing frame (5), characterized in that: The lower end of the inner chamber of the fixing frame (5) is fixedly connected with a support transverse plate (7), the top of the support transverse plate (7) is fixedly connected with a filter shell (6), the left side of the filter shell (6) is fixedly connected with an input pipe (4), the left side of the input pipe (4) is fixedly installed with a fracturing pump set (1), the upper end of the inner chamber of the filter shell (6) is fixedly installed with a filter plate (18), the top of the filter shell (6) is fixedly installed with a sealing shell (9) through bolts, the right side of the sealing shell (9) is fixedly connected with a liquid inlet pipe (8), the top of the outer surface of the sealing shell (9) is fixedly connected with a fixed box (10), the inner chamber of the fixed box (10) is movably connected with a rotating rod (17) between the bottom of the inner chamber of the fixed box (10) and the top of the inner chamber of the sealing shell (9) through a bearing, the lower end of the rotating rod (17) is movably connected with a crushing roller (19) through a bearing, the bottom of the crushing roller (19) is movably connected to the top of the filter plate (18), the top of the rotating rod (17) is fixedly installed with a second bevel gear (21), the back of the fixed box (10) is fixedly installed with a driving motor (15), the output end of the driving motor (15) is fixedly installed with a rotating shaft (13), the front surface of the rotating shaft (13) is movably connected to the inner chamber of the fixed box (10) through a bearing, the surface of the rotating shaft (13) is fixedly installed with a first bevel gear (20).

2. A fracturing water injection apparatus for deep geothermal reservoir drainage according to claim 1, characterized in that: The middle end of the top of the fixing frame (5) is movably connected with a threaded sleeve (12) through a bearing, the inner chamber of the threaded sleeve (12) is threadedly connected with an adjusting screw rod (11), and the bottom of the adjusting screw rod (11) is fixedly connected to the middle end of the top of the outer surface of the fixed box (10).

3. A fracturing water injection apparatus for deep geothermal reservoir drainage according to claim 2, characterized in that: The outer surface of the threaded sleeve (12) is fixedly connected with a rotating handle, and the number of the rotating handles is four.

4. The fracturing and water injection apparatus for deep geothermal reservoir drainage according to claim 1, characterized in that: Both ends of the top of the fixing frame (5) are movably connected with guide sliding rods (14), and the bottom of the guide sliding rod (14) is fixedly connected to the top of the outer surface of the fixed box (10).

5. The fracturing and water injection apparatus for deep geothermal reservoir drainage according to claim 1, characterized in that: The bottom of the fixing frame (5) is fixedly connected with a support bottom plate (3), the left end of the top of the support bottom plate (3) is fixedly connected with a support frame (2), and the upper end of the support frame (2) is fixedly installed at the lower end of the fracturing pump set (1).

6. The fracturing and water injection apparatus for deep geothermal reservoir drainage according to claim 1, characterized in that: The bottom of the sealing shell (9) is fixedly connected with a rubber sealing gasket (16), and the bottom of the rubber sealing gasket (16) is movably connected to the top of the filter shell (6).

7. The fracturing and water injection apparatus for deep geothermal reservoir drainage according to claim 1, characterized in that: The first bevel gear (20) is engaged with the second bevel gear (21).

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