Centralizer for oil exploitation

Abstract

The utility model discloses a centralizer for oil exploitation, which relates to the technical field of oil exploitation and comprises a sucker rod, a guide sleeve is sleeved on the outer side of the sucker rod, a plurality of fixing boxes are fixedly connected on the outer side of the guide sleeve, and a mounting plate is placed on one side of each fixing box. By arranging a guide block, a mounting plate and a baffle, when a ball is replaced, one end of a second screw is screwed out to the outer side of a threaded hole, then a side plate and the baffle are taken down from one side of the mounting plate, then the ball is taken out from the interior of a mounting groove, then a new ball is placed into the mounting groove, and then the baffle and the side plate are placed on the mounting plate; and then one end of the second screw is screwed into the threaded hole, and then the balls are mounted in the mounting groove through the side plate and the baffle, so that the balls which are worn much can be replaced.

Description

Technical Field

[0001] This utility model relates to the field of oil extraction technology, specifically to a centralizer for oil extraction. Background Technology

[0002] During oilfield production, uneven wear between the sucker rod and the inner wall of the tubing has become a significant factor affecting the normal production of pumped wells. To prevent direct contact and friction between the sucker rod and the tubing wall during its up-and-down movement, causing rod and tubing wear, a centralizer is often installed on the sucker rod. According to a petroleum development centralizer with application number CN216157609U, during use, a first sleeve is connected to the sucker rod body, a centralizer block is inserted into a track, and the centralizer block and track are fixed with bolts. After installation, the sucker rod body is inserted into the tubing, where ball bearings roll against the inner wall of the tubing, centralizing the sucker rod body through the centralizer block and ball bearings. When the centralizer block or ball bearings on the outside of the centralizer wears down over time, the centralizer block can be replaced simply by removing the bolts, improving ease of use. However, this centralizer requires replacing the ball bearings directly by replacing the centralizer itself, resulting in high operating costs. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a centralizer for oil extraction, which solves the problems mentioned in the background section.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a centralizer for oil extraction, comprising a sucker rod, a guide sleeve fitted on the outer side of the sucker rod, a plurality of fixed boxes fixedly connected to the outer side of the guide sleeve, a mounting plate placed on one side of each fixed box, a plurality of mounting grooves formed on one side of each mounting plate, ball bearings placed inside each mounting groove, a baffle plate placed on one side of each mounting plate, and a through hole formed on the surface of each baffle plate on the side of the ball bearings, with one end of each ball bearing passing through the through hole and extending to the outer side of the baffle plate.

[0005] Preferably, side plates are fixedly connected to both sides of the baffle, the two side plates are located on both sides of the mounting plate, and two second screws are threaded inside each side plate. Threaded holes are opened on both sides of the mounting plate at one end of the second screw.

[0006] Preferably, one end of each of the second screws extends into the threaded hole and is threadedly connected to the inside of the threaded hole.

[0007] Preferably, each of the fixed boxes has a guide block slidably connected inside. One end of each guide block extends to the outside of the fixed box and is fixedly connected to one side of the mounting plate. The guide block has two sets of holes inside, and each set of holes includes several insertion holes. Two first bolts are inserted inside each of the fixed boxes. One end of each first bolt passes through the insertion hole and extends to the outside of the fixed box.

[0008] Preferably, a first nut is threaded onto the outer side of one end of the first bolt.

[0009] Preferably, a fixing sleeve is fixedly connected to the outer side of the guide sleeve and to the top and bottom of the fixing box. A connecting block is placed inside the fixing sleeve. One end of the connecting block extends to the outer side of the fixing sleeve and is fixedly connected to a scraper. A first screw is threaded inside the fixing sleeve. The bottom end of the first screw extends into the connecting block and is threadedly connected to the inside of the connecting block.

[0010] This utility model provides a centralizer for oil extraction, which has the following beneficial effects:

[0011] 1. This oil well uses a centralizer, which is equipped with a guide block, a mounting plate, and a baffle. When replacing the ball bearings, one end of the second screw is screwed out to the outside of the threaded hole. Then, the side plate and baffle are removed from one side of the mounting plate. The ball bearing is then taken out from the mounting groove, and the new ball bearing is placed into the mounting groove. The baffle and side plate are then placed on the mounting plate, and one end of the second screw is screwed into the threaded hole. Finally, the side plate and baffle install the ball bearing into the mounting groove. This allows for the replacement of heavily worn ball bearings.

[0012] 2. This oil well employs a centralizer, which consists of a guide block, a first bolt, and a socket. By unscrewing the first nut from the outside of the first bolt, the first bolt is moved out of the fixed box. Then, the mounting plate is pulled, causing the mounting plate to move the guide block. The positions of the mounting plate and the ball bearings are adjusted. Then, one end of the first bolt is passed through the socket and out to the outside of the fixed box. The first nut is screwed on the outside of one end of the first bolt to fix the positions of the guide block, mounting plate, baffle, and ball bearings, enabling this device to adapt to oil pipes of various inner diameters. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the fixing box of this utility model;

[0015] Figure 3 This is a schematic diagram of the ball replacement structure of this utility model;

[0016] Figure 4This is a schematic diagram of the connection structure between the scraper and the fixing sleeve of this utility model.

[0017] In the diagram: 1. Sucker rod; 2. Guide sleeve; 3. Fixing sleeve; 4. First screw; 5. Connecting block; 6. Scraper; 7. Fixing box; 8. Guide block; 9. Insertion hole; 10. First bolt; 11. First nut; 12. Mounting plate; 13. Baffle; 14. Ball bearing; 15. Mounting groove; 16. Through hole; 17. Second screw; 18. Threaded hole; 19. Side plate. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Example 1

[0020] Please see Figures 1 to 4 This utility model provides a technical solution: a centralizer for oil extraction, including a sucker rod 1, a guide sleeve 2 sleeved on the outside of the sucker rod 1, a plurality of fixed boxes 7 fixedly connected to the outside of the guide sleeve 2, an mounting plate 12 placed on one side of each fixed box 7, a plurality of mounting grooves 15 opened on one side of each mounting plate 12, ball bearings 14 placed inside each mounting groove 15, a baffle 13 placed on one side of each mounting plate 12, a through hole 16 opened on the surface of the baffle 13 and on the side of the ball bearings 14, one end of each ball bearing 14 passing through the through hole 16 and extending to the outside of the baffle 13.

[0021] Side plates 19 are fixedly connected to both sides of the baffle 13. The two side plates 19 are located on both sides of the mounting plate 12. Two second screws 17 are threaded inside the side plates 19. Threaded holes 18 are opened on both sides of the mounting plate 12 and at one end of the second screws 17. The position of the side plates 19 is limited and fixed by the cooperation of the threaded holes 18 and the second screws 17.

[0022] One end of each of the second screws 17 extends into the threaded hole 18 and is threaded into the threaded hole 18. The side plate 19, the second screws 17 and the threaded hole 18 are used to install and fix the side plate 19, the baffle 13 and the ball 14.

[0023] Inside the fixed box 7, guide blocks 8 are slidably connected. One end of each guide block 8 extends to the outside of the fixed box 7 and is fixedly connected to one side of the mounting plate 12. The guide block 8 has two sets of holes inside, and each set of holes includes several insertion holes 9. Two first bolts 10 are inserted inside the fixed box 7. One end of each first bolt 10 passes through the insertion holes 9 and extends to the outside of the fixed box 7. The positions of the guide blocks 8, the mounting plate 12, the baffle 13, and the ball bearings 14 are limited and fixed by the first bolts 10 and the first nuts 11.

[0024] The outer side of one end of the first bolt 10 is threaded with a first nut 11, which limits and fixes the position of the guide block 8 through the first nut 11 and the first bolt 10.

[0025] Example 2

[0026] Please see Figure 1 and Figure 4 This utility model provides a technical solution: a fixing sleeve 3 is fixedly connected to the outside of the guide sleeve 2 and at the top and bottom of the fixing box 7. A connecting block 5 is placed inside the fixing sleeve 3. One end of the connecting block 5 extends to the outside of the fixing sleeve 3 and is fixedly connected to a scraper block 6. A first screw 4 is threaded inside the fixing sleeve 3. The bottom end of the first screw 4 extends into the inside of the connecting block 5 and is threadedly connected to the inside of the connecting block 5. The connecting block 5 and the scraper block 6 are limited and fixed by the first screw 4.

[0027] In summary, this oil well employs a centralizer. During use, the first nut 11 is unscrewed from the outside of the first bolt 10, moving the first bolt 10 out of the fixed housing 7. Then, the mounting plate 12 is pulled, causing the guide block 8 to move, adjusting the position of the mounting plate 12 and the ball bearing 14. Next, one end of the first bolt 10 is passed through the insertion hole 9 and out to the outside of the fixed housing 7. The first nut 11 is then screwed onto the outside of one end of the first bolt 10, fixing the positions of the guide block 8, mounting plate 12, baffle 13, and ball bearing 14. One end of the first screw 4 is then unscrewed from the connecting block 5. The scraper block 6 and connecting block 5 are then removed from the fixed sleeve 3. The end of the connecting block 5 at the point where the scraper block 6 is needed is inserted into the fixed sleeve 3. Finally, one end of the first screw 4 is screwed into the connecting block 5. The connecting block 5 and the scraper 6 are fixedly installed on the fixing sleeve 3. The sucker rod 1 is inserted into the oil pipe. After insertion, the ball bearing 14 rolls against the inner wall of the oil pipe. The ball bearing 14 straightens the sucker rod 1. The movement of the sucker rod 1 drives the scraper 6 to move, so that the scraper 6 cleans the scale on the inner wall of the oil pipe. When replacing the ball bearing 14, one end of the second screw 17 is unscrewed to the outside of the threaded hole 18. Then the side plate 19 and the baffle 13 are removed from one side of the mounting plate 12. Then the ball bearing 14 is taken out from the inside of the mounting groove 15. Then the new ball bearing 14 is placed into the inside of the mounting groove 15. Then the baffle 13 and the side plate 19 are placed on the mounting plate 12. Then one end of the second screw 17 is screwed into the threaded hole 18. Then the side plate 19 and the baffle 13 install the ball bearing 14 into the inside of the mounting groove 15.

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

Claims

1. A centralizer for use in oil production, comprising a sucker rod (1), characterized in that: The outer side of the sucker rod (1) is sleeved with a guide sleeve (2), the outer side of the guide sleeve (2) is fixedly connected with a plurality of fixed boxes (7), one side of the fixed box (7) is provided with a mounting plate (12), one side of the mounting plate (12) is provided with a plurality of mounting grooves (15), the mounting groove (15) is provided with a plurality of rolling balls (14), one side of the mounting plate (12) is provided with a baffle (13), the surface of the baffle (13) and the side of the rolling ball (14) are provided with a perforated hole (16), one end of the rolling ball (14) passes through the perforated hole (16) and extends to the outside of the baffle (13).

2. A centralizer for use in the production of oil as claimed in claim 1 wherein: Both sides of the baffle (13) are fixedly connected with side plates (19), both side plates (19) are located on both sides of the mounting plate (12), the inside of the side plate (19) is screwedly connected with two second screws (17), both sides of the mounting plate (12) and one end of the second screw (17) are provided with threaded holes (18).

3. A centralizer for use in the extraction of oil as claimed in claim 2, wherein: One end of the second screw (17) extends into the threaded hole (18) and is screwedly connected with the threaded hole (18).

4. A centralizer for use in the oil industry as claimed in claim 3, characterized in that: The inside of the fixed box (7) is slidably connected with a guide block (8), one end of the guide block (8) extends to the outside of the fixed box (7) and is fixedly connected with one side of the mounting plate (12), the inside of the guide block (8) is provided with two groups of holes, and each group of holes comprises a plurality of insertion holes (9), the inside of the fixed box (7) is inserted with two first bolts (10), one end of the first bolt (10) passes through the insertion hole (9) and extends to the outside of the fixed box (7).

5. A centralizer for use in the oil and gas industry as claimed in claim 4, wherein: The outer side of the first bolt (10) is screwedly connected with a first nut (11).

6. A centralizer for use in the oil industry as defined in claim 1, characterized in that: The outer side of the guide sleeve (2) and the top and bottom of the fixed box (7) are fixedly connected with a fixed sleeve (3), the inside of the fixed sleeve (3) is provided with a connecting block (5), one end of the connecting block (5) extends to the outside of the fixed sleeve (3) and is fixedly connected with a scraping block (6), the inside of the fixed sleeve (3) is screwedly connected with a first screw (4), the bottom end of the first screw (4) extends to the inside of the connecting block (5) and is screwedly connected with the inside of the connecting block (5).

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