Segmented well washing device

Abstract

The utility model relates to the field of segmented well washing, in particular to a segmented well washing device. The utility model provides a segmented well washing device which comprises a water pump connecting pipe, a rotating rod and the like, and the lower portion of the water pump connecting pipe is rotationally connected with the rotating rod. Through cooperation of a collecting cylinder, an expansion block, a buffer plate and a spring, in the well wall cleaning process, due to an annular space formed between the outer sides of a water pump connecting pipe, a rotating rod, a packer and a spray head and the well wall, when cleaning fluid reaches a certain amount, flowback fluid flows upwards along the annular space and carries sediment and other impurities to flow into the collecting cylinder, and the well wall is cleaned. Due to the impact force of flow-back liquid flowing, the buffer plate is extruded and moves along the inner wall of the collecting barrel, and the spring is compressed, so that direct impact of the flow-back liquid flowing at a high speed on the internal structure of the collecting barrel is avoided, sediments and other impurities can smoothly flow into the water inlet pipe, and subsequent collection and treatment are facilitated; flowback fluid is effectively prevented from directly overflowing to the position near a wellhead.

Description

Technical Field

[0001] The utility model relates to the field of segmented well washing, in particular to a segmented well washing device. Background Art

[0002] Staged well cleaning is a technology used to clean sediments, debris or cuttings from the inner wall of the wellbore during drilling or groundwater development in order to increase the water production of the well or ensure the normal working condition of the well.

[0003] During the well cleaning process, when the well wall needs to be cleaned in sections, the staff will place the assembled cleaning component at the wellhead and then slowly move it down along the well wall. When the cleaning component moves to the specified height, the infusion tube is placed in the cleaning component so that the cleaning fluid flows into the cleaning component through the infusion tube. When it flows into the packer in the cleaning component, the internal pressure of the packer increases with the inflow of the cleaning fluid, forcing the expansion element to expand outward and come into close contact with the well wall, which is convenient for sealing the well wall. Then the components on the cleaning component are disassembled. After the cleaning component is disassembled, the staff will disassemble the disassembled The components are pulled out from the wellhead, and new components are assembled on the disassembled components to form a new cleaning component. The above operation is repeated to move the nozzle on the cleaning component to a suitable position. The nozzle sprays the cleaning fluid inside onto the well wall to facilitate the removal of sediment on the well wall. During the well wall cleaning process, an annular space is formed between the outer side of the new cleaning component and the well wall, and the return fluid in the well will flow upward through the annular space. If the return fluid is not properly handled, it will overflow directly around the wellhead, which may cause serious pollution to the surrounding environment, including soil and groundwater pollution.

[0004] In view of the above problems, it is necessary to design a segmented well washing device for collecting the return fluid. Utility Model Content

[0005] In order to overcome the disadvantage that due to the formation of an annular space between the outer side of the new cleaning component and the well wall, the return fluid in the well will flow upward through the annular space. If the return fluid is not properly handled, the return fluid will directly overflow to the vicinity of the wellhead, which may cause serious pollution to the surrounding environment, the utility model provides a segmented well washing device.

[0006] The technical scheme of the utility model is as follows: a segmented well washing device includes a water pump connecting pipe, a packer, a rotating rod and a nozzle. The lower part of the water pump connecting pipe is rotatably connected to the rotating rod, the lower part of the rotating rod is rotatably connected to the packer, and the lower part of the packer is provided with a nozzle. It also includes a support frame, a cyclone desander, a water inlet pipe, a collecting cylinder, an expansion block, a buffer plate, a spring, a water outlet pipe, a water tank, a filter screen and a baffle. A support frame is placed on the right side of the water pump connecting pipe, a cyclone desander is arranged on the support frame, a water inlet is opened on the left side of the cyclone desander, and a water pump connecting pipe is provided with a support frame. It is connected to a collecting cylinder, an expansion block is provided on the lower side of the collecting cylinder, a buffer plate is slidably connected to the inside of the collecting cylinder, the buffer plate and the water pump connecting pipe are slidably matched, a spring is connected between the buffer plate and the collecting cylinder, a water inlet pipe is connected to the right side of the collecting cylinder, the other end of the water inlet pipe is connected to the water inlet, a sewage outlet is provided at the lower part of the cyclone desander, a water outlet is provided on the right side of the cyclone desander, a water outlet pipe is connected to the water outlet, a baffle is placed on the upper left side of the water pump connecting pipe, a water tank is clamped on the baffle, the other end of the water outlet pipe is connected to the water tank, and a filter is provided inside the water tank.

[0007] Optionally, it also includes an installation frame, a fixed cone, a fixed rod, a connecting block, a sliding rod, a rotating shaft, a bearing and a knocking handle. A plurality of installation frames are evenly spaced and connected to the support frame. The interior of the installation frame is slidably connected to a fixed cone. The fixed cone is symmetrically provided with sliding grooves. The interiors of the two sliding grooves are connected to fixed rods. The fixed rods are fixedly connected to the inner wall of the installation frame. A connecting block is rotatably connected to the outer side of the fixed cone. The connecting block is connected to a sliding rod. The installation frame is symmetrically connected to bearings. A rotating shaft is rotatably connected between the two bearings. The sliding rod runs through the middle of the rotating shaft. The outer end of the sliding rod is connected to a knocking handle.

[0008] Optionally, a shock-absorbing pad is also included, and a plurality of shock-absorbing pads are evenly spaced and connected between the two support frames.

[0009] Optionally, the water tank is made of a transparent material.

[0010] Optionally, the interior of the installation frame is a hollow frame.

[0011] Optionally, the shock absorbing pad is made of elastic material.

[0012] Optionally, the number of fixed cones is not less than three.

[0013] Optionally, the size of the buffer plate is consistent with the size of the interior of the collecting cylinder.

[0014] The beneficial effect of the utility model is as follows: through the cooperation of the collecting tube, the expansion block, the buffer plate and the spring, during the well wall cleaning process, due to the annular space formed between the water pump connecting pipe, the rotating rod, the sealer and the outer side of the nozzle and the well wall, when the cleaning liquid reaches a certain amount, the return liquid flows upward along the annular space and carries sediments and other impurities to the collecting tube. Due to the impact force of the return liquid flow, the buffer plate is squeezed and moves along the inner wall of the collecting tube, and the spring is compressed, avoiding the direct impact of the high-speed flowing return liquid on the internal structure of the collecting tube, so that the sediments and other impurities can flow smoothly into the water inlet pipe, which is convenient for subsequent collection and treatment, and effectively prevents the return liquid from directly overflowing to the vicinity of the wellhead. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the collecting tube, expansion block, buffer plate and other parts of the utility model.

[0017] Figure 3 It is a three-dimensional structural schematic diagram of the buffer plate and the spring of the utility model.

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the supporting frame, shock absorbing pad, cyclone desander and other parts of the utility model.

[0019] Figure 5 It is a three-dimensional structural schematic diagram of components such as the installation frame, the fixing cone and the slide groove of the utility model.

[0020] Figure 6 It is a three-dimensional structural schematic diagram of the filter screen and baffle of the utility model.

[0021] The markings of the components in the accompanying drawings are as follows: 1_water pump connecting pipe, 2_packer, 3_rotating rod, 4_nozzle, 5_support frame, 6_shock pad, 7_cyclone desander, 8_water inlet, 9_sewage outlet, 10_water outlet, 11_water inlet pipe, 12_collecting cylinder, 13_expansion block, 14_buffer plate, 15_spring, 16_installing frame, 17_fixing cone, 18_chute, 19_fixing rod, 20_connecting block, 21_sliding rod, 22_rotating shaft, 23_bearing, 24_knocking handle, 25_water outlet pipe, 26_water tank, 27_filter, 28_baffle. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment: A segmented well washing device, such as Figure 1-Figure 6As shown, it includes a water pump connecting pipe 1, a packer 2, a rotating rod 3, a nozzle 4, a support frame 5, a shock absorbing pad 6, a cyclone desander 7, a water inlet pipe 11, a collecting tube 12, an expansion block 13, a buffer plate 14, a spring 15, a mounting frame 16, a fixed cone 17, a fixed rod 19, a connecting block 20, a sliding rod 21, a rotating shaft 22, a bearing 23, a knocking handle 24, a water outlet pipe 25, a water tank 26, a filter screen 27 and a baffle 28. The lower part of the water pump connecting pipe 1 is rotatably connected to the rotating rod 3, and the lower part of the rotating rod 3 is rotatably connected to the packer 2. When the cleaning fluid flows into the expansion chamber of the packer 2, the internal pressure of the packer 2 increases, forcing the expansion element to expand outward and form a close contact with the well wall to achieve sealing. The lower part of the packer 2 A nozzle 4 is installed for spraying cleaning liquid, and a discharge valve is arranged on the nozzle 4. A support frame 5 is placed on the right side of the water pump connecting pipe 1. A plurality of shock-absorbing pads 6 are evenly spaced and connected between the two support frames 5. The shock-absorbing pads 6 are made of elastic material and are used to provide stability to the support frame 5. A cyclone desander 7 is installed on the support frame 5. The cyclone desander 7 utilizes the centrifugal separation principle in fluid mechanics to remove suspended sand and impurities in water. A water inlet 8 is provided on the left side of the cyclone desander 7. A collecting cylinder 12 is connected to the water pump connecting pipe 1. An expansion block 13 is connected to the lower side of the collecting cylinder 12. The expansion block 13 is used to form a seal with the well wall. A buffer plate 14 is slidably connected to the inside of the collecting cylinder 12, and the buffer plate 14 is connected to the water pump connecting pipe 1. The pipe 1 is slidably matched, the size of the buffer plate 14 is consistent with the size inside the collecting tube 12, a spring 15 is connected between the buffer plate 14 and the collecting tube 12, a water inlet pipe 11 is connected to the right side of the collecting tube 12, and the other end of the water inlet pipe 11 is connected to the water inlet 8, a sewage outlet 9 is provided at the lower part of the cyclone sand remover 7, sand and gravel can be discharged through the sewage outlet 9, a water outlet 10 is provided on the right side of the cyclone sand remover 7, three mounting frames 16 are evenly spaced and connected to the support frame 5, the interior of the mounting frame 16 is a hollow frame, and a fixed cone 17 is slidably connected to the interior of the mounting frame 16, the number of the fixed cones 17 is not less than three, and the support frame 5 can be fixed to the ground, and the fixed cone 17 is symmetrically provided with a slide groove 18, and the two slide grooves 1 8 is connected with a fixing rod 19 inside, and the fixing rod 19 is fixedly connected to the inner wall of the installation frame 16. A connecting block 20 is rotatably connected to the outer side of the fixing cone 17, and a sliding rod 21 is connected to the connecting block 20. A bearing 23 is symmetrically connected to the installation frame 16, and a rotating shaft 22 is rotatably connected between the two bearings 23. The sliding rod 21 runs through the middle of the rotating shaft 22, and a knocking handle 24 is connected to the outer end of the sliding rod 21. A water outlet pipe 25 is connected to the water outlet 10, and a baffle 28 is placed on the upper left side of the water pump connecting pipe 1. A water tank 26 is clamped on the baffle 28. The water tank 26 is made of transparent material, and the other end of the water outlet pipe 25 is communicated with the water tank 26. A filter screen 27 is installed inside the water tank 26 to facilitate filtering impurities in the clean water.

[0024] When it is necessary to use the device to clean the well wall in sections, the staff will place the device next to the wellhead, then place the support frame 5 stably on the ground, and lay a shock-absorbing pad 6 on it to enhance stability, then place another support frame 5 on the laid shock-absorbing pad 6, and then use a tool to knock the fixed cone 17, so that the fixed cone 17 moves downward along the fixed rod 19. While the fixed cone 17 moves, it drives the connecting block 20 to move downward, and then drives the sliding rod 21 and the knocking handle 24 to move upward. At this time, the knocking handle 24 is in an upwardly tilted state, and the movement of the sliding rod 21 drives the rotating shaft 22 to rotate along the bearing 23. When the fixed cone 17 is in a suitable position, the fixed cone 17 is no longer knocked with a tool, so that the support frame 5 can be firmly fixed. On the ground, assemble the water pump connecting pipe 1, the rotating rod 3, the packer 2 and the nozzle 4 to ensure that all parts are tightly connected to form a cleaning assembly. Then place the infusion pipe in the water pump connecting pipe 1, and then place the assembled cleaning assembly in the well. Then slowly move the cleaning assembly downward along the well wall. When the packer 2 moves to a suitable height, the cleaning fluid in the infusion pipe flows into the water pump connecting pipe 1, and then flows from the water pump connecting pipe 1 to the rotating rod 3, and then flows from the rotating rod 3 to the packer 2. When the cleaning fluid flows into the expansion chamber of the packer 2, as the cleaning fluid flows in, the internal pressure of the packer 2 increases, forcing the expansion element to expand outward, and a sealing ring or other sealing structure is designed at the sealing place of the expansion element to ensure that the fluid passing through the inside of the packer 2 will not The cleaning fluid leaks out of the isolated area and forms a close contact with the well wall to achieve sealing. Since the discharge valve is not opened, when the cleaning fluid flows into the nozzle 4, the nozzle 4 will not spray the cleaning fluid. Then the conveying fluid is removed from the water pump connecting pipe 1 to prevent the cleaning fluid from continuing to flow in. Then the water pump connecting pipe 1 is rotated to drive the rotating rod 3 to rotate in the opposite direction along the packer 2 until the rotating rod 3 is out of contact with the packer 2. Then the water pump connecting pipe 1 and the rotating rod 3 are pulled out of the wellhead, and then another packer 2 and another nozzle 4 are assembled on the rotating rod 3. After the assembly of the other packer 2 and the other nozzle 4 is completed, they are assembled into a new cleaning assembly again. Then the discharge valve is opened again to make the other nozzle 4 in an open state. Next, the staff places the new cleaning assembly in the wellhead. And slowly move it downward along the well wall. When the other packer 2 moves to a suitable height, the collecting tube 12, the expansion block 13 and the buffer plate 14 are installed on the water pump connecting pipe 1 in sequence, so that the collecting tube 12 is placed at the wellhead, and ensure that the expansion block 13 fits the well wall to facilitate sealing the well wall. The infusion tube is placed in the water pump connecting pipe 1 again, so that the cleaning fluid in the infusion tube flows into the water pump connecting pipe 1, and then flows from the water pump connecting pipe 1 to the rotating rod 3, and then flows from the rotating rod 3 to another packer 2, and finally flows to another nozzle 4. In the process of the cleaning fluid flowing into the expansion chamber of the other packer 2, with the inflow of the cleaning fluid, the internal pressure of the other packer 2 increases, forcing the expansion element to expand outward and fit tightly with the well wall.Thereby, sealing is achieved. At this time, the separate placement of the two packers 2 can separate the well wall into a section, which is convenient for separate cleaning of the separated well wall. The cleaning fluid is sprayed into the well wall by another nozzle 4. The cleaning fluid contacts the well wall and can help remove sediments from the well wall. In the process of cleaning the well wall, an annular space is formed between the water pump connecting pipe 1, the rotating rod 3, the packer 2 and the outer side of the nozzle 4 and the well wall. After the cleaning fluid is delivered to a certain amount, the return fluid flows upward along the annular space and carries sediments and other impurities to the collecting tube 12. Because the buffer plate 14 is located in the collecting tube 12 and blocks the feed, the buffer plate 14 is squeezed under the impact force of the return fluid flow, so that the buffer plate 14 moves upward along the inner wall of the collecting tube 12, and the spring 15 is compressed. At this time, the buffer plate 14 no longer blocks the feed, avoiding the direct impact of the high-speed flowing return fluid on the internal structure of the collecting tube 12, so that the sediments and other impurities flow smoothly to the water inlet pipe 11, and then flows from the water inlet pipe 11 to the water inlet 8, and then flows from the water inlet 8 to the cyclone desander 7, so that a strong rotating motion is formed inside the cyclone desander 7. Due to the difference in density between sand and water, under the action of centrifugal force, the sand with higher density is thrown to the wall of the cyclone chamber, and moves downward along the wall to the sewage outlet 9 at the bottom of the cyclone desander 7, and then discharged through the sewage outlet 9. At the same time, the clean water with lower density rises in the central area and is discharged through the water outlet 10 on the right part of the cyclone desander 7, thereby realizing the effective separation of sand and water. The clean water then flows from the water outlet 10 to the water outlet pipe 25, and then flows from the water outlet pipe 25 to the water tank 26. In the process of the clean water flowing to the water tank 26, the clean water will contact with the filter screen 27 and be filtered by the filter screen 27, so as to facilitate the removal of impurities in the clean water. The above operation is repeated until all sections of the well wall are thoroughly cleaned, and finally all cleaning tools are taken out from the wellhead to complete the well wall cleaning operation. ,

[0025] It should be understood that the above description is only for exemplary purposes and is not intended to limit the present invention. Those skilled in the art will understand that variations of the present invention will be included within the scope of the claims herein.

Claims

1. A staged well washing device, comprising a water pump connecting pipe (1), a packer (2), a rotating rod (3) and a nozzle (4), wherein the lower part of the water pump connecting pipe (1) is rotatably connected to the rotating rod (3), the lower part of the rotating rod (3) is rotatably connected to the packer (2), and the lower part of the packer (2) is equipped with a nozzle (4), characterized in that: The invention also comprises a support frame (5), a cyclone desander (7), a water inlet pipe (11), a collecting cylinder (12), an expansion block (13), a buffer plate (14), a spring (15), a water outlet pipe (25), a water tank (26), a filter screen (27) and a baffle plate (28); the support frame (5) is placed on the right side of the water pump connecting pipe (1); the cyclone desander (7) is installed on the support frame (5); a water inlet (8) is provided on the left side of the cyclone desander (7); the collecting cylinder (12) is connected to the water pump connecting pipe (1); the expansion block (13) is connected to the lower side of the collecting cylinder (12); the buffer plate (14) is slidably connected to the inside of the collecting cylinder (12); the buffer plate (14) is connected to the The water pump connecting pipe (1) is slidably matched, a spring (15) is connected between the buffer plate (14) and the collecting tube (12), a water inlet pipe (11) is connected to the right side of the collecting tube (12), the other end of the water inlet pipe (11) is communicated with the water inlet (8), a sewage outlet (9) is provided at the lower part of the cyclone desander (7), a water outlet (10) is provided at the right side of the cyclone desander (7), a water outlet pipe (25) is connected to the water outlet (10), a baffle (28) is placed on the upper left side of the water pump connecting pipe (1), a water tank (26) is clamped on the baffle (28), the other end of the water outlet pipe (25) is communicated with the water tank (26), and a filter screen (27) is installed inside the water tank (26).

2. A staged well washing device according to claim 1, characterized in that: The invention also comprises a mounting frame (16), a fixed cone (17), a fixed rod (19), a connecting block (20), a sliding rod (21), a rotating shaft (22), a bearing (23) and a knocking handle (24). A plurality of mounting frames (16) are evenly spaced and connected to the supporting frame (5). The mounting frame (16) is slidably connected to the interior of the mounting frame (16). The fixed cone (17) is symmetrically provided with a sliding groove (18). The two sliding grooves (18) are connected to the interior of the fixing rod (19). The fixing rod (19) is fixedly connected to the inner wall of the mounting frame (16). The outer side of the fixing cone (17) is rotatably connected to the connecting block (20). The connecting block (20) is connected to the sliding rod (21). The mounting frame (16) is symmetrically connected to the bearing (23). The rotating shaft (22) is rotatably connected between the two bearings (23). The sliding rod (21) runs through the middle of the rotating shaft (22). The outer end of the sliding rod (21) is connected to the knocking handle (24).

3. A staged well washing device according to claim 2, characterized in that: It also includes a shock absorbing pad (6), and a plurality of shock absorbing pads (6) are evenly spaced and connected between the two support frames (5).

4. A staged well washing device according to claim 3, characterized in that: The water tank (26) is made of transparent material.

5. A staged well washing device according to claim 4, characterized in that: The interior of the installation frame (16) is a hollow frame.

6. A staged well washing device according to claim 5, characterized in that: The shock absorbing pad (6) is made of elastic material.

7. A staged well washing device according to claim 6, characterized in that: The number of the fixed cones (17) is not less than three.

8. A staged well washing device according to claim 7, characterized in that: The size of the buffer plate (14) is consistent with the size of the interior of the collecting cylinder (12).

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