Sand-prevention well-flushing compression type packer
By designing a combined structure of a sand control cover, an inclined hole, a sand control plate and a sand isolation ring on the packer, the problem of the packer being invaded by sediment during downhole operations is solved, effectively reducing the intrusion of sediment and ensuring Packer functioning properly.
Patent Information
- Application Number
- CN202421087975.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-17
AI Technical Summary
During the underground operation of existing packers, they are susceptible to invasion of mud and sand, affecting their normal operation.
A sand control washable well compression packer is designed, which adopts the combined structure of the packer body, sand control cover, inclined hole, sand control plate and sand isolation ring. Through the cooperation of sand isolation ring and sand control cover, it can effectively isolate and exclude Silt.
It effectively reduces the amount of sediment entering the packer body, prevents sediment from damaging the packer, and ensures its normal operation.
Smart Images
Figure CN222376448U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of packers, in particular to a sand-proof and well-washable compression packer. Background Art
[0002] A packer is a downhole tool connected to a downhole tubing string and used to isolate the annular space between the oil pipe and the casing of an oil and gas well or the wall of an open hole.
[0003] When the packer is added to the pipeline, as the packer moves downward, the mud in the pipeline gradually enters the packer during the packer's fall. The more mud the packer contacts, the more mud enters the packer. Mud entering the packer will affect the operation of the packer. Utility Model Content
[0004] In view of the shortcomings of the prior art, the utility model aims to provide a sand-proof and washable well compression packer, which has the effect of effectively reducing the sediment from approaching the packer.
[0005] The above technical objectives of the utility model are achieved through the following technical solutions:
[0006] A sand-proof and washable well compression packer comprises a packer body, a sand-proof cover is arranged on the circumferential side of the packer body, annular plates are arranged at the upper and lower ends of the sand-proof cover, and the two annular plates are slidably connected to the circumferential side of the packer body, a plurality of inclined holes are opened on the circumferential side of the sand-proof cover, a sand-isolating ring is arranged below the sand-proof cover, and the sand-isolating ring is slidably connected to the circumferential side of the packer body, a plurality of sand-proof plates are fixedly connected to the circumferential side of the sand-proof cover, and the plurality of sand-proof plates are respectively located at the notches of the inclined holes.
[0007] By adopting the above technical solution, the packer body, sand cover, inclined hole, sand plate and sand isolation ring cooperate to protect the packer body and reduce the entry of sand into the packer body.
[0008] In a preferred example, the utility model can be further configured as follows: two connecting blocks are fixedly connected to the circumferential side of the packer body, two screws are fixedly connected to the lower ends of the two connecting blocks, and both of the screws are movable through the lower end of the lower annular plate, and nuts are threadedly connected to the circumferential sides of the two connecting blocks.
[0009] By adopting the above technical solution, the connecting block, the annular plate, the screw rod and the nut can facilitate the fixation of the sand control cover and the packer body.
[0010] In a preferred example, the utility model can be further configured as follows: a connecting ring is opened on the circumferential side of the packer body, a connecting ring is fixedly connected to the circumferential inner wall of the sand isolation ring, the connecting ring is threadedly connected in the thread groove, and a plurality of reinforcement rods are evenly fixedly connected to the circumferential side of the sand control cover.
[0011] By adopting the above technical solution, the sand isolation ring, the connecting ring and the first sealing ring can facilitate the connection between the sand isolation ring and the packer body.
[0012] In a preferred example, the utility model can be further configured as follows: a second sealing ring is fixedly connected to the circumferential side of the sand isolation ring, and the second sealing ring fits the surface of the sand control cover, and a first sealing ring is fixedly connected to the lower end of the connecting ring.
[0013] By adopting the above technical solution, the second sealing ring and the first sealing ring can improve the sealing performance between the sand isolation ring and the packer body.
[0014] In a preferred example, the utility model can be further configured as follows: a connecting mechanism is arranged above the annular plate on the upper side, the connecting mechanism includes a fixed frame, a slider, two spring grooves, two springs and two clamping blocks, the fixed frame is fixedly connected to the circumferential side of the packer body, the slider is slidably connected in the fixed frame, the two spring grooves are respectively opened on both sides of the slider, the two springs are respectively fixedly connected to one side wall of the two spring grooves, and the two clamping blocks are respectively fixedly connected to one side of the two spring grooves.
[0015] By adopting the above technical solution, the connection mechanism can facilitate the connection between the upper part of the sand control cover and the packer body.
[0016] In a preferred example, the utility model can be further configured as follows: telescopic rods are arranged in the two spring grooves, and the two telescopic rods are respectively fixedly connected between the two clamping blocks and the two spring grooves.
[0017] By adopting the above technical solution, the telescopic rod can prevent the spring from being compressed or bending and deforming when it recovers elastically.
[0018] In summary, the present invention includes at least one of the following beneficial technical effects:
[0019] 1. A packer body, a sand cover, an inclined hole, a sand plate and a sand isolation ring are provided. When the packer body and the pipeline enter the well pipe, the sand isolation ring can separate the mud and sand during the movement, so that the mud and sand around the sand isolation ring will not approach the packer body. The sand cover moves with the packer body and can prevent the mud and sand from entering the packer body. The movement can protect the packer body, effectively reduce the sand entering the packer body, and prevent the packer body from being damaged by excessive sand entering the packer body.
[0020] 2. A connecting mechanism, a connecting block, annular plates, screws and nuts are provided. The sand cover is put from the bottom onto the surface of the packer body, and the slider is inserted into the fixed frame. The block is squeezed into the spring groove due to the extrusion of the inner wall of the fixed frame. When the slider continues to move upward, the block leaves the fixed frame, and the spring groove pushes the block back to its original position due to its own elastic recovery. At this time, the block and the upper end of the fixed frame clamp the sand cover and the packer body, and the lower annular plate is put onto the surface of the packer body. The two screws pass through the two annular plates, and the nut can be turned to fix the bottom annular plate to the sand cover. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 is a stereogram of this embodiment;
[0022] Figure 2 is a three-dimensional cross-sectional view of this embodiment;
[0023] Figure 3 This embodiment Figure 2 A partial enlarged view of the middle A;
[0024] Figure 4 This embodiment Figure 2 A partial enlarged view of point B in the middle.
[0025] In the figure, 1. the body of the packer; 2. the sand-isolating ring; 3. the sand-proof cover; 4. the reinforcing rod; 5. the sand-proof plate; 6. the connecting mechanism; 601. the fixing frame; 602. the sliding block; 603. the spring groove; 604. the spring; 605. the clamping block; 606. the telescopic rod; 7. the inclined hole; 8. the connecting block; 9. the annular plate; 10. the screw; 11. the nut; 12. the first sealing ring; 13. the second sealing ring; 14. the threaded groove; 15. the connecting ring. DETAILED DESCRIPTION
[0026] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0027] Example:
[0028] Reference Figure 1-4The utility model discloses a sand-proof and washable well compression packer, comprising a packer body 1, a sand-proof cover 3 is arranged on the circumferential side of the packer body 1, an annular plate 9 is arranged at both the upper and lower ends of the sand-proof cover 3, the two annular plates 9 are slidably connected to the circumferential side of the packer body 1, a plurality of inclined holes 7 are opened on the circumferential side of the sand-proof cover 3, a sand-proof ring 2 is arranged below the sand-proof cover 3, the sand-proof ring 2 is slidably connected to the circumferential side of the packer body 1, and a plurality of sand-proof rings 7 are fixedly connected to the circumferential side of the sand-proof cover 3. Plate 5, and multiple sand-proof plates 5 are respectively located at the notches of the inclined holes 7. When the packer body 1 and the pipeline enter the well pipe, the sand-isolating ring 2 can separate the mud and sand during the movement, so that the mud and sand around the sand-isolating ring 2 will not approach the packer body 1. The sand-proof cover 3 moves with the packer body 1, and can prevent the mud and sand from entering the packer body 1. The movement can protect the packer body 1, effectively reduce the sand entering the packer body 1, and prevent excessive sand from entering the packer body 1 and being damaged.
[0029] Two connecting blocks 8 are fixedly connected to the circumferential side of the packer body 1, and two screws 10 are fixedly connected to the lower ends of the two connecting blocks 8, and the two screws 10 are movable through the lower end of the lower annular plate 9. Preferably, the upper annular plate 9 is fixedly connected to the upper end of the sand cover 3, and the lower annular plate 9 is fitted with the lower end of the sand cover 3. The circumferential sides of the two connecting blocks 8 are threadedly connected with nuts 11. The connecting blocks 8, annular plates 9, screws 10 and nuts 11 can facilitate the fixation of the sand cover 3 and the packer body 1.
[0030] A connecting ring 15 is provided on the circumferential side of the packer body 1, and the circumferential inner wall of the sand isolation ring 2 is fixedly connected with the connecting ring 15. The connecting ring 15 is threadedly connected in the thread groove 14. A plurality of reinforcing rods 4 are evenly and fixedly connected to the circumferential side of the sand control cover 3. The sand isolation ring 2, the connecting ring 15, and the first sealing ring 12 can facilitate the connection between the sand isolation ring 2 and the packer body 1.
[0031] A second sealing ring 13 is fixedly connected to the circumferential side of the sand isolation ring 2, and the second sealing ring 13 fits the surface of the sand cover 3. The lower end of the connecting ring 15 is fixedly connected to the first sealing ring 12. The second sealing ring 13 and the first sealing ring 12 can improve the sealing between the sand isolation ring 2 and the isolation device body 1.
[0032] A connecting mechanism 6 is arranged above the upper annular plate 9, and the connecting mechanism 6 includes a fixed frame 601, a slider 602, two spring grooves 603, two springs 604 and two clamping blocks 605. The fixed frame 601 is fixedly connected to the circumferential side of the packer body 1, the slider 602 is slidably connected in the fixed frame 601, the two spring grooves 603 are respectively opened on both sides of the slider 602, the two springs 604 are respectively fixedly connected to one side wall of the two spring grooves 603, and the two clamping blocks 605 are respectively fixedly connected to one side of the two spring grooves 603, so as to cover the sand cover 3 from the bottom to the packer body 1, insert the slider 602 into the fixed frame 601, the block 605 is squeezed into the spring groove 603 due to the squeezing of the inner wall of the fixed frame 601, when the slider 602 continues to move upward, the block 605 leaves the fixed frame 601, and the spring groove 603 pushes the block 605 back to its original position due to its own elastic recovery. At this time, the block 605 and the upper end of the fixed frame 601 clamp the sand cover 3 and the packer body 1, and the lower annular plate 9 is sleeved onto the surface of the packer body 1, and the two screws 10 pass through the two annular plates 9. The nut 11 can be turned to fix the bottom annular plate 9 to the sand cover 3.
[0033] Telescopic rods 606 are provided in the two spring slots 603 , and the two telescopic rods 606 are respectively fixedly connected between the two clamping blocks 605 and the two spring slots 603 . The telescopic rods 606 can prevent the spring 604 from being compressed or bending and deforming when it recovers elastically.
[0034] The implementation principle of the above embodiment is: when the packer body 1 and the pipeline enter the well pipe, the sand isolation ring 2 can separate the mud and sand during the movement, so that the mud and sand around the sand isolation ring 2 will not approach the packer body 1. The sand cover 3 moves with the packer body 1 and can prevent the mud and sand from entering the packer body 1. The movement can protect the packer body 1, effectively reduce the sand entering the packer body 1, and prevent excessive sand from entering the packer body 1 and causing damage.
[0035] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.
[0036] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A sand control and washable well compression packer, comprising a packer body (1), characterized in that: A sand cover (3) is provided on the circumferential side of the packer body (1), and annular plates (9) are provided at the upper and lower ends of the sand cover (3). The two annular plates (9) are slidably connected to the circumferential side of the packer body (1). A plurality of inclined holes (7) are opened on the circumferential side of the sand cover (3). A sand isolation ring (2) is provided below the sand cover (3), and the sand isolation ring (2) is slidably connected to the circumferential side of the packer body (1). A plurality of sand isolation plates (5) are fixedly connected to the circumferential side of the sand cover (3), and the plurality of sand isolation plates (5) are respectively located at the notches of the inclined holes (7).
2. The sand control and well washable compression packer according to claim 1, characterized in that: Two connecting blocks (8) are fixedly connected to the circumferential side of the packer body (1), and two screw rods (10) are fixedly connected to the lower ends of the two connecting blocks (8), and the two screw rods (10) are movable through the lower end of the lower annular plate (9), and the circumferential sides of the two connecting blocks (8) are threadedly connected with nuts (11).
3. The sand control and well washable compression packer according to claim 1, characterized in that: A connecting ring (15) is provided on the circumferential side of the packer body (1), the connecting ring (15) is fixedly connected to the circumferential inner wall of the sand isolation ring (2), the connecting ring (15) is threadedly connected in the thread groove (14), and a plurality of reinforcing rods (4) are evenly fixedly connected to the circumferential side of the sand control cover (3).
4. The sand control and well washable compression packer according to claim 3, characterized in that: A second sealing ring (13) is fixedly connected to the circumferential side of the sand isolation ring (2), and the second sealing ring (13) fits the surface of the sand control cover (3). The lower end of the connecting ring (15) is fixedly connected to the first sealing ring (12).
5. The sand control and well washable compression packer according to claim 1, characterized in that: A connecting mechanism (6) is arranged above the annular plate (9) on the upper side, and the connecting mechanism (6) comprises a fixed frame (601), a slider (602), two spring grooves (603), two springs (604) and two clamping blocks (605). The fixed frame (601) is fixedly connected to the circumferential side of the packer body (1), the slider (602) is slidably connected in the fixed frame (601), the two spring grooves (603) are respectively opened on both sides of the slider (602), the two springs (604) are respectively fixedly connected to one side wall of the two spring grooves (603), and the two clamping blocks (605) are respectively fixedly connected to one side of the two spring grooves (603).
6. The sand control and well washable compression packer according to claim 5, characterized in that: A telescopic rod (606) is disposed in each of the two spring slots (603), and the two telescopic rods (606) are respectively fixedly connected between the two clamping blocks (605) and the two spring slots (603).