Oil well sand separation and delivery device

Abstract

The utility model relates to the technical field of oil exploitation discloses oil downhole silt separation conveying device, including the body, the inside of body is provided with the vibration thin sieve plate and coarse sieve plate, the inside bottom end of body still fixedly connected with storage box, the inside of body still fixedly connected with the extraction subassembly, one end of extraction subassembly fixedly connected in the top of body, the left side of body is rotatably connected with sand plate, the left side of body still fixedly connected with two blocking rods, the left side rotatable connection of coarse sieve plate has two beating assembly, the left side rotatable connection of beating assembly has beating rod, the front and back sides of sand plate all are set up and have the sliding slot of beating rod sliding for, the inner wall sliding connection of sliding slot has the slide post, one end of slide post fixedly connected with sliding block, the outside of slide post is equipped with spring, in the utility model, the collision of beating rod and blocking rod can drive sand plate high frequency slight vibration, effectively avoid the big particle impurity to pile up and block material on sand plate, reduced the downtime number because of cleaning block material.

Description

Technical Field

[0001] This utility model relates to the field of oil extraction technology, and in particular to an oil well mud and sand separation and conveying device. Background Technology

[0002] Petroleum extraction technology refers to a comprehensive technical system for extracting crude oil from underground reservoirs, encompassing exploration, drilling, well completion, oil production, and post-production maintenance. It involves establishing a wellbore through drilling, and combining this with artificial lift (such as pumping units) and water injection to transport crude oil from the formation to the surface. Simultaneously, it addresses issues such as wellbore stability, reservoir protection, and sand control, making it a core technology for ensuring efficient and safe crude oil production.

[0003] Downhole sediment separation and conveying devices are key equipment in oil extraction technology for addressing sand-bearing issues. During crude oil extraction, formation sediment easily mixes into the wellbore. This device uses structures such as filters and cyclone separators to separate oil and sediment, then discharges the sediment, preventing it from clogging the wellbore or wearing down equipment. It directly serves the stable operation of the oil extraction process and is an important technological carrier for "cost reduction and efficiency improvement" in oil extraction technology.

[0004] However, in existing technologies, the discharge plates of some downhole mud and sand separation conveying devices are simply designed with an incline, relying on their own gravity or the additional small force exerted when the screen plate is shaken by a vibrating motor to allow impurities to fall off. But when the viscosity of the impurities is too high or after prolonged use, some impurities will adhere to the surface of the discharge plate, causing blockages or even requiring shutdown for maintenance.

[0005] Therefore, a mud and sand separation and conveying device for oil wells is proposed to address the above problems. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides an oil well mud and sand separation and conveying device, which aims to improve the problem that some existing mud and sand separation devices rely solely on the gravity or slight vibration of impurities to make them fall. When encountering high-viscosity impurities or after long-term use, they are prone to blockage and may even require shutdown for maintenance.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An oil well mud and sand separation and conveying device includes a body, inside which a vibrating fine screen plate and a coarse screen plate are installed. A storage box is fixedly connected to the bottom of the body. An extraction component is also fixedly connected inside the body, with one end of the extraction component fixedly connected to the top of the body. A sand plate is rotatably connected to the left side of the body. Two baffles are also fixedly connected to the left side of the body. Two striking components are rotatably connected to the left side of the coarse screen plate. A striking rod is rotatably connected to the left side of the striking components. Slide grooves for the striking rods to slide are provided on both the front and rear sides of the sand plate. A sliding column is slidably connected to the inner wall of the slide groove. A slider is fixedly connected to one end of the sliding column. A spring is sleeved on the outside of the sliding column.

[0009] As a further description of the above technical solution:

[0010] A vibration motor is fixedly connected to the top of the machine body, and both the fine sieve plate and the coarse sieve plate are driven by the vibration motor to vibrate.

[0011] As a further description of the above technical solution:

[0012] The extraction assembly includes a slag pump, an extraction pipe is fixedly connected to the input end of the slag pump, the other end of the extraction pipe is fixedly connected to the inner wall of the storage box, a conveying pipe is fixedly connected to the output end of the slag pump, a hydrocyclone separator feeder is fixedly connected to the other end of the conveying pipe, and the output end of the hydrocyclone separator feeder is fixedly connected to the top of the machine body.

[0013] As a further description of the above technical solution:

[0014] The right side of the cyclone separator feeder is fixedly connected to a discharge pipe for discharging the filtered slurry.

[0015] As a further description of the above technical solution:

[0016] The striking assembly includes a rotating rod that rotates on the left side of the coarse screen plate. Two adjacent sides of the two rotating rods are fixedly connected to a striking rod that contacts one end of the stop rod. One side of the striking rod is fixedly connected to the left side of the rotating rod.

[0017] As a further description of the above technical solution:

[0018] The other end of the sliding column is fixedly connected to a limiting block to prevent the sliding column from leaving the sliding range of the sliding groove;

[0019] As a further description of the above technical solution:

[0020] One end of the spring is fixedly connected to one side of the slider, and the other end of the spring is fixedly connected to one side of the inner wall of the sand plate.

[0021] As a further description of the above technical solution:

[0022] A spring-sensitive block is fixedly connected to the side of the slider that is close to the striking rod. The spring-sensitive block is a polyurethane spring-sensitive block.

[0023] This utility model has the following beneficial effects:

[0024] In this invention, when the vibrating motor drives the rotating rod to swing, the collision between the impact rod and the stop rod, along with the extension and resetting of the spring, can drive the sand plate to vibrate slightly at high frequency. This effectively prevents large particles of impurities from accumulating and clogging the sand plate, reducing the number of downtimes caused by cleaning blockages. At the same time, the polyurethane elastic sensitive block on the slider can sensitively transmit elastic force, making the sand plate vibration response more timely, further reducing the possibility of impurity accumulation, and lowering equipment maintenance costs and the risk of work interruption. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of the downhole mud and sand separation and conveying device proposed in this utility model.

[0026] Figure 2 This is a schematic diagram of the storage box of the downhole mud and sand separation and conveying device proposed in this utility model.

[0027] Figure 3 This is a schematic diagram of the structure of the baffle rod of the downhole mud and sand separation and conveying device proposed in this utility model.

[0028] Figure 4 This is a schematic diagram of the sand plate structure of the downhole mud and sand separation and conveying device proposed in this utility model.

[0029] Figure 5 for Figure 4 Enlarged view of point A in the image.

[0030] Legend:

[0031] 1. Machine body; 2. Vibrating motor; 3. Fine screen plate; 4. Coarse screen plate; 5. Storage box; 6. Slag pump; 7. Extraction pipe; 8. Conveying pipe; 9. Cyclone separator feeder; 10. Discharge pipe; 11. Sand plate; 12. Stop bar; 13. Rotating rod; 14. Impact rod; 15. Striking rod; 16. Slide groove; 17. Sliding column; 18. Sliding block; 19. Limiting block; 20. Spring. Detailed Implementation

[0032] 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.

[0033] Reference Figures 1 to 5 This utility model provides an embodiment of an oil well mud and sand separation and conveying device, including a body 1. The body 1 is internally equipped with a vibrating fine screen plate 3 and a coarse screen plate 4. The fine screen plate 3 is used for a more detailed mud and sand filtration step in the second cycle, which can intercept finer particulate impurities. The coarse screen plate 4 is used for a coarse filtration step in the first cycle, which can intercept larger particulate impurities. Under the action of vibration, the impurities on the surface can move to the left and finally be discharged. A vibrating motor 2 is fixedly connected to the top of the body 1. Both the fine screen plate 3 and the coarse screen plate 4 are driven by the vibrating motor 2 to vibrate. The vibrating motor 2 can drive the fine screen plate 3 and the coarse screen plate 4 to vibrate, which assists in the coarse and fine filtration of mud and sand and the discharge process.

[0034] The bottom of the machine body 1 is also fixedly connected to a storage box 5, which is used to receive qualified mud and fluid that pass through the coarse screen plate 4 and the fine screen plate 3. The machine body 1 is also fixedly connected to an extraction component, which includes a slag pump 6, which can extract the mud and fluid mixture in the storage box 5 to the conveying pipe 8. The input end of the slag pump 6 is fixedly connected to an extraction pipe 7, which is used to introduce the mixture in the storage box 5 into the slag pump 6. The other end of the extraction pipe 7 is fixedly connected to the inner wall of the storage box 5. The output end of the slag pump 6 is fixedly connected to the conveying pipe 8, which is used to convey the mixture to the cyclone separator feeder 9. The other end of the conveying pipe 8 is fixedly connected to the cyclone separator feeder 9, which achieves separation by centrifugal force, so that the heavier fine mud and sand particles are thrown to the inner wall and move downward along the wall, while the clearer fluid forms an upward vortex in the center. It can also re-transport the unqualified mud and sand to the top of the fine screen plate 3 for secondary circulation and fine filtration.

[0035] The right side of the cyclone separator feeder 9 is fixedly connected to a discharge pipe 10 for discharging filtered slurry and qualified clean fluid. One end of the extraction component is fixedly connected to the top of the machine body 1, and the output end of the cyclone separator feeder 9 is fixedly connected to the top of the machine body 1. This is to return the substandard mud and fluid back into the machine body 1 for a second cycle of filtration. The left side of the machine body 1 is rotatably connected to a sand plate 11 for receiving and discharging falling particles of various sizes, and also to prevent impurities from remaining for a long time under vibration. The left side of the machine body 1 is also fixedly connected to two baffles 12, which can contact and collide with the impact rods 14. The left side of the coarse screen plate 4 is rotatably connected to two impact components, including a rotating rod 13 that rotates on the left side of the coarse screen plate 4 and can swing with the vibration of the coarse screen plate 4. The two rotating rods 13 are fixedly connected to the adjacent side of each of the two rotating rods 13, which are in contact with one end of the baffles 12 and can collide with the baffles 12 when the rotating rods 13 swing, thereby causing the left side of the rotating rods 13 to tilt up.

[0036] A striking rod 15 is rotatably connected to the left side of the striking assembly. It can slide within the groove 16 under the influence of the rotating rod 13, and can also contact the slider 18 and transmit force. One side of the striking rod 15 is fixedly connected to the left side of the rotating rod 13. Grooves 16 are provided on both the front and rear sides of the sand plate 11 to allow the striking rod 15 to slide, providing a path for its movement. A sliding column 17 is slidably connected to the inner wall of the groove 16, allowing it to slide within the groove 16 and also drive the slider 18 to move under the action of the striking rod 15 and the spring 20. One end of the sliding column 17 is fixedly connected to the slider 18, allowing it to move under the influence of the sliding column 17 and also transmitting force through the elastic sensitive block. Elastic force; a spring-sensitive block is fixedly connected to the side of the slider 18 that is close to the striking rod 15, which can sensitively transmit elastic force and make the vibration response of the sand plate 11 more timely; the spring-sensitive block is a polyurethane elastic-sensitive block, and a limiting block 19 is fixedly connected to the other end of the sliding column 17 to prevent the sliding column 17 from falling out of the sliding range of the sliding groove 16. A spring 20 is sleeved on the outside of the sliding column 17, which can reset after being squeezed and drive the sliding column 17 to move in the opposite direction; one end of the spring 20 is fixedly connected to one side of the slider 18, and the other end of the spring 20 is fixedly connected to one side of the inner wall of the sand plate 11. The slider 18 and the sand plate 11 here can provide stable support for the spring 20.

[0037] Working principle: First, the sand-containing fluid to be filtered is injected through the opening at the top of the machine body 1. The fluid first passes through the right side of the fine screen plate 3 but does not pass through, and then falls onto the surface of the coarse screen plate 4. At this time, the vibration motor 2 starts, driving the fine screen plate 3 and the coarse screen plate 4 to vibrate at high frequency. The fine screen plate 3 first performs preliminary filtration of the fluid, which can intercept some of the larger and medium-sized particulate impurities.

[0038] Large particles of impurities trapped by the coarse screen plate 4 will move to the left under continuous vibration and eventually fall onto the sand plate 11 to await discharge. Meanwhile, qualified mud and fluid passing through the coarse screen plate 4 fall into the storage box 5 at the bottom of the machine body 1. At this time, the slag pump 6 is started, and the mud and fluid mixture can be pumped through the extraction pipe 7 along the conveying pipe 8 to the cyclone separator feeder 9.

[0039] The cyclone separator feeder 9 achieves separation through centrifugal force: after the mixture enters the equipment, it rotates at high speed along the inner wall. Due to the difference in density, the heavier, finer sand particles are thrown towards the inner wall and move downwards along it, while the clearer fluid forms an upward vortex in the center. After separation, the qualified clear fluid is discharged from the discharge pipe 10 for collection by the staff; the substandard sand is transported back to the top of the fine screen plate 3 for further fine screening, and then falls into the storage box 5 to enter the next separation process, forming a cycle.

[0040] Additionally, when the vibrating motor 2 drives the fine screen plate 3 and the coarse screen plate 4 to vibrate, the rotating rod 13 on the left side of the coarse screen plate 4 will swing accordingly. The impact rod 14 on the rotating rod 13 will repeatedly contact and collide with the stop rod 12 on the left side of the machine body 1. When the impact rod 14 is blocked by the stop rod 12, it will cause the left side of the rotating rod 13 to tilt up, thereby causing the striking rod 15 to slide in the groove 16 of the sand plate 11. When the striking rod 15 slides, it will contact the slider 18 at one end of the sliding column 17. The polyurethane elastic sensitive block on the slider 18 will transmit elastic force, pushing the sliding column 17 to slide along the groove 16. At the same time, the spring 20 outside the sliding column 17 will be compressed.

[0041] When the impact rod 14 swings away from the stop rod 12 along with the rotating rod 13, the spring 20 will return to its original position and drive the sliding column 17 to move in the opposite direction. This high-frequency reciprocating motion will transmit the force to the sand plate 11, causing the left side of the sand plate 11 to slightly tilt up and vibrate. This vibration can prevent large particles of impurities from staying on the sand plate 11 for a long time, effectively preventing material blockage, while reducing the number of times the sand plate 11 needs to be cleaned and reducing downtime for maintenance.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mud and sand separation and conveying device for oil wells, comprising a body (1), characterized in that: The machine body (1) is equipped with a vibrating fine screen plate (3) and a coarse screen plate (4) inside. A storage box (5) is also fixedly connected to the bottom of the machine body (1). An extraction component is also fixedly connected inside the machine body (1). One end of the extraction component is fixedly connected to the top of the machine body (1). A sand plate (11) is rotatably connected to the left side of the machine body (1). Two baffles (12) are also fixedly connected to the left side of the machine body (1). Two striking components are rotatably connected to the left side of the coarse screen plate (4). A striking rod (15) is rotatably connected to the left side of the striking component. Slide grooves (16) for the striking rod (15) to slide are opened on both the front and rear sides of the sand plate (11). A sliding column (17) is slidably connected to the inner wall of the slide groove (16). A slider (18) is fixedly connected to one end of the sliding column (17). A spring (20) is sleeved on the outside of the sliding column (17).

2. The downhole mud and sand separation and conveying device according to claim 1, characterized in that: A vibration motor (2) is fixedly connected to the top of the machine body (1), and both the fine sieve plate (3) and the coarse sieve plate (4) are driven by the vibration motor (2) to vibrate.

3. The downhole mud and sand separation and conveying device according to claim 1, characterized in that: The extraction assembly includes a slag pump (6), with an extraction pipe (7) fixedly connected to the input end of the slag pump (6), and the other end of the extraction pipe (7) fixedly connected to the inner wall of the storage box (5). The output end of the slag pump (6) is fixedly connected to a conveying pipe (8), and the other end of the conveying pipe (8) is fixedly connected to a cyclone separator feeder (9). The output end of the cyclone separator feeder (9) is fixedly connected to the top of the machine body (1).

4. The downhole mud and sand separation and conveying device according to claim 3, characterized in that: The right side of the cyclone separator feeder (9) is fixedly connected to a discharge pipe (10) for discharging the filtered slurry.

5. The downhole mud and sand separation and conveying device according to claim 1, characterized in that: The striking assembly includes a rotating rod (13) that rotates on the left side of the coarse screen plate (4). Both rotating rods (13) have a strike rod (14) that contacts one end of the stop rod (12) and one side of the striking rod (15) is fixedly connected to the left side of the rotating rod (13).

6. The downhole mud and sand separation and conveying device according to claim 1, characterized in that: The other end of the slide column (17) is fixedly connected to a limiting block (19) to prevent the slide column (17) from sliding out of the sliding range of the slide groove (16).

7. The downhole mud and sand separation and conveying device according to claim 1, characterized in that: One end of the spring (20) is fixedly connected to one side of the slider (18), and the other end of the spring (20) is fixedly connected to one side of the inner wall of the sand plate (11).

8. The downhole mud and sand separation and conveying device according to claim 1, characterized in that: The slider (18) is fixedly connected to a spring-sensitive block on the side close to the striking rod (15), and the spring-sensitive block is a polyurethane spring-sensitive block.

Images