Sand remover for geothermal well drilling

Abstract

The utility model relates to the technical field of energy exploitation, and discloses a desander for geothermal well drilling, which comprises a charging barrel, a sealing cover is arranged on the upper surface of the charging barrel, a feeding pipe is arranged in the middle of the upper surface of the sealing cover, and a throttling component is arranged on the lower surface of the charging barrel. The movable block can be driven to move in the auxiliary groove through the electric push rod, when the movable block moves, the movable block can drive the flow baffle to move together, the exposed area of the conical discharge port can be adjusted through movement of the flow baffle, underground hot water can flow out through the conical discharge port at the moment, and the larger the exposed area of the conical discharge port is, the larger the discharge flow is. According to the underground hot water filtering device, personnel can adjust the flow and the flow speed of underground hot water in time according to actual working requirements, so that solid particles in the hot water are more effectively intercepted, filtering holes of the second-stage filtering net are smaller, the solid particles in geothermal fluid filtered by the first-stage filtering net can be secondarily screened, and the filtering effect on the solid particles is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of energy exploitation, in particular to a sand remover for geothermal drilling. Background Art

[0002] In the process of geothermal energy development and utilization, geothermal drilling is one of the key links. Geothermal drilling involves drilling a geothermal well several kilometers deep from the surface to extract underground high-temperature steam or hot water resources.

[0003] During drilling, the unstable soil structure in the formation is damaged, resulting in fine particles detaching from the original formation and returning to the wellbore with the fluid. Personnel need to filter the solid particles to avoid affecting the operation of subsequent equipment. Most of the existing filtering devices can only perform primary filtration, and primary filtration is difficult to effectively remove solid particles in geothermal fluid. Moreover, if the fluid flow rate is too large or the flow velocity is too high, it will also lead to a decrease in the filtering effect of the filter screen on solid particles. Summary of the Utility Model

[0004] To solve the above technical problems, the utility model provides a sand remover for geothermal drilling.

[0005] The utility model is realized by the following technical solutions: A sand remover for geothermal drilling, including a material barrel, a sealing cover is arranged on the upper surface of the material barrel, a feed pipe is arranged in the middle of the upper surface of the sealing cover, and a throttling component is arranged on the lower surface of the material barrel;

[0006] The throttling component includes an adjusting bottom plate, the top of the adjusting bottom plate is fixedly connected to the lower surface of the material barrel, an auxiliary groove is opened on the surface of the adjusting bottom plate, a movable block is slidably connected inside the auxiliary groove, a baffle is fixedly connected to the surface of the movable block, and an electric push rod is fixedly connected to one side of the movable block, and the other end of the electric push rod is fixedly connected to the inner wall of the auxiliary groove.

[0007] Through the above technical solutions, the position of the movable block in the auxiliary groove is controlled by the electric push rod, so as to adjust the opening degree of the baffle, and further adjust the flow rate of the liquid in the material barrel. This design enables the throttling component to flexibly adjust the flow rate according to actual needs, improving the applicability and flexibility of the equipment.

[0008] As a further improvement of the above solution, a conical discharge port is opened in the middle of the lower surface of the material barrel, and a separation box is fixedly connected to the bottom of the adjusting bottom plate.

[0009] Through the above technical solutions, the conical discharge port can improve the flow characteristics of the fluid, avoid the generation of eddy currents or blockages at the outlet of the fluid, so as to ensure the smooth outflow of the fluid and enter the separation box.

[0010] As a further improvement of the above solution, an inlet hole is provided in the middle of the upper surface of the separation box, and a first sliding groove is provided at the top of the inner wall of the separation box.

[0011] Through the above technical solution, the inlet hole provided in the middle of the upper surface of the separation box is larger than the area of the conical discharge port. The larger inlet hole can reduce the flow resistance of the geothermal fluid when entering the separation box, thereby accelerating the flow rate and improving the fluid processing capacity of the entire system.

[0012] As a further improvement of the above solution, a first slider is slidably connected inside the first sliding groove, and a primary filter screen is fixedly connected to the surface of the first slider.

[0013] Through the above technical solution, the first slider slides in the first sliding groove. This sliding connection method can keep the primary filter screen stable during operation, and is also convenient for disassembly and cleaning, which is beneficial to maintaining the long-term efficient operation of the equipment.

[0014] As a further improvement of the above solution, a first handle is fixedly connected to the middle of the front end of the primary filter screen, and the primary filter screen is slidably connected to the inner wall of the separation box through the first slider.

[0015] Through the above technical solution, the main function of the primary filter screen is to preliminarily filter the geothermal fluid and remove solid particles of larger sizes, thereby reducing the burden on the subsequent separation link and improving the overall separation effect. And personnel can disassemble the primary filter screen through the first handle, and then remove the solid particles inside the filter screen to ensure the subsequent filtering effect.

[0016] As a further improvement of the above solution, a second sliding groove is provided at the bottom of the inner wall of the separation box, and a second slider is slidably connected inside the second sliding groove.

[0017] Through the above technical solution, the setting of the second sliding groove and the second slider can make the secondary filter screen easy to disassemble, facilitating personnel to clean the solid particles in the filter screen.

[0018] As a further improvement of the above solution, a secondary filter screen is fixedly connected to the surface of the second slider. The secondary filter screen is slidably connected to the inner wall of the separation box through the second slider, and a second handle is fixedly connected to the middle of the front end of the secondary filter screen.

[0019] Through the above technical solution, the filter holes of the secondary filter screen are smaller than those of the primary filter screen. The secondary filter screen provides a finer filtering barrier, which can further remove small-sized solid particles that were not intercepted by the primary filter screen, thereby improving the overall filtering accuracy.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] The utility model drives the movable block to move inside the auxiliary groove through an electric push rod by arranging a throttling component. When the movable block moves, it drives the baffle plate to move together. The movement of the baffle plate adjusts the exposed area of the conical discharge port. At this time, the underground hot water can flow out through the conical discharge port. The larger the exposed area of the conical discharge port, the greater the discharge flow rate. Personnel can timely adjust the flow rate and velocity of the underground hot water according to actual working requirements, so as to more effectively intercept solid particles in the hot water. The filter holes of the secondary filter are smaller, and the solid particles in the geothermal fluid filtered by the primary filter can be screened again to ensure the filtering effect on solid particles. Brief Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the structure of the conical discharge port of the utility model;

[0024] Figure 3 It is a schematic diagram of the structure of the separation box of the utility model;

[0025] Figure 4 It is a schematic diagram of the structure of the access hole of the utility model;

[0026] Figure 5 It is a schematic diagram of the structure of the throttling component of the utility model.

[0027] Main Symbol Explanation:

[0028] 1. Barrel; 2. Sealing cover; 3. Feed pipe; 4. Throttling component; 401. Adjusting bottom plate; 402. Auxiliary groove; 403. Movable block; 404. Baffle plate; 405. Electric push rod; 5. Conical discharge port; 6. Separation box; 7. Access hole; 8. First chute; 9. First slider; 10. Primary filter; 11. First handle; 12. Second chute; 13. Second slider; 14. Secondary filter; 15. Second handle. Specific Embodiment

[0029] Next, in combination with the drawings and specific embodiments, the present utility model will be further described. It should be noted that on the premise of no conflict, the following described embodiments or technical features can be combined arbitrarily to form new embodiments.

[0030] Embodiment:

[0031] Please refer to Figures 1-5 , a desander for geothermal drilling in this embodiment includes a barrel 1, a sealing cover 2 is arranged on the upper surface of the barrel 1, a feed pipe 3 is arranged in the middle of the upper surface of the sealing cover 2, and a throttling component 4 is arranged on the lower surface of the barrel 1;

[0032] The throttling component 4 includes an adjusting base plate 401. The top of the adjusting base plate 401 is fixedly connected to the lower surface of the barrel 1. An auxiliary groove 402 is formed on the surface of the adjusting base plate 401. An active block 403 is slidably connected inside the auxiliary groove 402. A baffle plate 404 is fixedly connected to the surface of the active block 403. One side of the active block 403 is fixedly connected to an electric push rod 405. The other end of the electric push rod 405 is fixedly connected to the inner wall of the auxiliary groove 402. By the telescoping of the electric push rod 405, personnel can drive the active block 403 to move inside the auxiliary groove 402. When the active block 403 moves, it will drive the baffle plate 404 to move together. The movement of the baffle plate 404 will adjust the exposed area of the conical discharge port 5. In this way, the underground hot water can flow out through the conical discharge port 5. The larger the exposed area of the conical discharge port 5, the greater the flow rate of the discharged hot water. In this way, personnel can adjust the flow rate and velocity of the underground hot water in a timely manner according to the actual working requirements, which is very important for the subsequent filtering equipment because it can enable the filtering equipment to more effectively intercept the solid particles in the hot water.

[0033] A conical discharge port 5 is formed in the middle of the lower surface of the barrel 1. The bottom of the adjusting base plate 401 is fixedly connected to a separation box 6. The design of the conical discharge port 5 helps to achieve the smooth discharge of materials and at the same time reduces the risk of blockage at the discharge port. The shape of the conical discharge port 5 can make the solid particles naturally concentrate and discharge under the action of gravity without excessive accumulation. This design is especially suitable for processing geothermal fluids containing a large amount of solid particles, ensuring the efficient operation of the solid particle filtration.

[0034] An inlet hole 7 is formed in the middle of the upper surface of the separation box 6. A first sliding groove 8 is formed at the top of the inner wall of the separation box 6. The inlet hole 7 formed in the middle of the upper surface of the separation box 6 is larger in area than the conical discharge port 5, which conveniently introduces the geothermal fluid into the inside of the separation box 6.

[0035] A first slider 9 is slidably connected inside the first sliding groove 8. A primary filter screen 10 is fixedly connected to the surface of the first slider 9. The cooperation of the first sliding groove 8 and the first slider 9 ensures that during the sand removal operation, the primary filter screen 10 can stably perform the filtering operation without displacement or vibration, thus not affecting the normal operation of the equipment.

[0036] A first handle 11 is fixedly connected to the middle of the front end of the primary filter screen 10. The primary filter screen 10 is slidably connected to the inner wall of the separation box 6 through the first slider 9. The primary filter screen 10 can filter the solid particles with larger volumes in the geothermal fluid, and personnel can disassemble the primary filter screen 10 through the first handle 11 and then remove the solid particles inside the filter screen to ensure the subsequent filtering effect.

[0037] A second chute 12 is provided at the bottom of the inner wall of the separation box 6, and a second slider 13 is slidably connected inside the second chute 12. The arrangement of the second chute 12 and the second slider 13 enables the secondary filter screen 14 to be easily disassembled, facilitating the cleaning of solid particles in the filter screen by personnel.

[0038] The surface of the second slider 13 is fixedly connected with a secondary filter screen 14. The secondary filter screen 14 is slidably connected to the inner wall of the separation box 6 through the second slider 13. The middle part of the front end of the secondary filter screen 14 is fixedly connected with a second handle 15. The filter holes of the secondary filter screen 14 are smaller than those of the primary filter screen 10, and can perform secondary screening on the geothermal fluid filtered by the primary filter screen 10, and filter solid particles in the fluid again, ensuring the filtering effect on solid particles.

[0039] The implementation principle of a desander for geothermal drilling in the embodiment of the present application is as follows: The barrel 1 is used to receive underground hot water or fluid extracted from a geothermal well. The sealing cover 2 is installed on the upper surface of the barrel 1 to ensure the sealing inside the barrel 1, and guide the geothermal fluid into the barrel 1 through the feed pipe 3. The geothermal fluid interacts with the throttling assembly 4 in the barrel 1. The throttling assembly 4 is composed of an adjusting bottom plate 401, an auxiliary groove 402, a movable block 403, a baffle plate 404 and an electric push rod 405. The electric push rod 405 can drive the movable block 403 to move in the auxiliary groove 402, and then drive the baffle plate 404 to move, adjusting the exposed area of the conical discharge port 5, so as to control the flow rate and velocity of the underground hot water. When the movable block 403 moves, it will drive the baffle plate 404 to move together. The movement of the baffle plate 404 will directly adjust the size of the conical discharge port 5. At this time, the underground hot water can flow out through the conical discharge port 5. The design of the conical discharge port 5 can naturally accelerate the flow of the fluid and contribute to the settlement of solid particles, while facilitating the control of the flow rate and flow. The separation box 6 is used to collect the underground hot water discharged from the bottom of the barrel 1, where solid-liquid separation is carried out. The geothermal fluid flows into the separation box 6 through the inlet hole 7, and first passes through the primary filter screen 10 for primary filtration. Larger solid particles are intercepted on the primary filter screen 10. Through the cooperation of the first slider 9 and the first chute 8, the primary filter screen 10 can slide on the inner wall of the separation box 6, facilitating cleaning or replacement. The geothermal fluid filtered by the primary filter screen 10 then contacts the secondary filter screen 14. The filter holes of the secondary filter screen 14 are smaller, and can perform secondary screening on the filtered fluid to further remove finer solid particles. The secondary filter screen 14 can also slide on the inner wall of the separation box 6 through the second slider 13 and the second chute 12, facilitating cleaning or replacement. The operator can adjust the exposed area of the conical discharge port 5 through the electric push rod 405 according to the actual working requirements, so as to control the flow rate and velocity of the underground hot water and more effectively intercept solid particles in the hot water.

[0040] The above embodiments are only the preferred embodiments of the present utility model, and the scope of protection of the present utility model cannot be limited thereby. Any non-substantive changes and substitutions made by those skilled in the art based on the present utility model fall within the scope of protection required by the present utility model.

Claims

1. A desander for geothermal drilling, characterized in that: It comprises a barrel (1), the upper surface of the barrel (1) is provided with a sealing cover (2), a feeding pipe (3) is provided in the middle of the upper surface of the sealing cover (2), and a throttling component (4) is provided on the lower surface of the barrel (1); The throttling assembly (4) comprises an adjusting base plate (401), the top of which is fixedly connected to the lower surface of the barrel (1), an auxiliary groove (402) is provided on the surface of the adjusting base plate (401), a movable block (403) is slidably connected inside the auxiliary groove (402), a baffle plate (404) is fixedly connected to the surface of the movable block (403), an electric push rod (405) is fixedly connected to one side of the movable block (403), and the other end of the electric push rod (405) is fixedly connected to the inner wall of the auxiliary groove (402).

2. A desander for geothermal drilling according to claim 1, characterized in that: A conical discharge port (5) is provided in the middle of the lower surface of the barrel (1), and a separation box (6) is fixedly connected to the bottom of the adjustment bottom plate (401).

3. A desander for geothermal drilling according to claim 2, characterized in that: An entry hole (7) is provided in the middle of the upper surface of the separation box (6), and a first sliding groove (8) is provided at the top of the inner wall of the separation box (6).

4. A desander for geothermal drilling as claimed in claim 3, characterized in that: A first sliding block (9) is slidably connected inside the first sliding groove (8), and a primary filter screen (10) is fixedly connected to the surface of the first sliding block (9).

5. A desander for geothermal drilling as claimed in claim 4, characterized in that: A first handle (11) is fixedly connected to the middle of the front end of the primary filter screen (10), and the primary filter screen (10) is slidably connected to the inner wall of the separation box (6) via a first slider (9).

6. A desander for geothermal drilling as claimed in claim 2, characterized in that: A second sliding groove (12) is provided at the bottom of the inner wall of the separation box (6), and a second sliding block (13) is slidably connected inside the second sliding groove (12).

7. A desander for geothermal drilling according to claim 6, characterized in that: A secondary filter screen (14) is fixedly connected to the surface of the second slider (13); the secondary filter screen (14) is slidably connected to the inner wall of the separation box (6) via the second slider (13); and a second handle (15) is fixedly connected to the middle of the front end of the secondary filter screen (14).

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