Large-drift-diameter packer

Abstract

The utility model belongs to the technical field of packers, and particularly relates to a large-drift-diameter packer which comprises a packer body, corrugated pipes are fixed to the two ends of the packer body respectively, connecting pipes are fixed to the ends of the corrugated pipes respectively, connecting cylinders are arranged on the outer sides of the connecting pipes respectively in a sleeved mode, and the connecting cylinders are arranged on the outer sides of the connecting pipes respectively. The bottom of the connecting cylinder is provided with an inserting hole for inserting the connecting pipe, the top of the connecting cylinder is fixedly provided with a threaded joint pipe, the top of the connecting cylinder is provided with a through hole, and the two side walls of the connecting pipe are provided with clamping grooves. By arranging the corrugated pipe, the connecting pipe, the inserting hole, the through hole, the clamping groove, the first spring, the trapezoidal block, the clamping block, the second spring, the sliding plate, the vertical rod, the triangular block, the sliding rod and the threaded pressing ring, when the packer body is damaged, the connecting pipe can be conveniently and rapidly detached from the corresponding connecting cylinder; therefore, the packer main body can be separated from the screwed joint pipe, and the packer main body can be conveniently replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of packers, in particular to a large-diameter 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 the oil and gas well or the open hole wall. The current large-diameter packer body and the joints at both ends are usually not easy to disassemble. When the packer body is damaged, the disassembly process is more troublesome. Therefore, we proposed a large-diameter packer to solve the above problem. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a large-diameter packer, which solves the problems raised in the above-mentioned background technology.

[0005] (II) Technical solution

[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0007] A large-diameter packer comprises a packer body, both ends of the packer body are fixed with bellows, the ends of the bellows are fixed with connecting pipes, the outer sides of the connecting pipes are sleeved with connecting tubes, the bottom of the connecting tubes is provided with a jack for inserting the connecting pipes, the top of the connecting tubes is fixed with a threaded joint pipe, the top of the connecting tubes is provided with a through hole, both side walls of the connecting tubes are provided with slots, both side inner walls of the connecting tubes are fixed with first springs, one end of the first springs is fixed with a trapezoidal block, the trapezoidal blocks are slidably connected in the connecting tubes, and one side wall of the trapezoidal block is fixed A card block adapted to the card slot is fixed, and two second springs are symmetrically fixed to the top inner wall of the connecting tube, and a slide is fixed to the bottom end of the second spring, and one side wall of the slide is slidably connected to the inner wall of one side adjacent to the connecting tube, and a vertical rod is fixed to the bottom of the slide, and a triangular block adapted to the adjacent trapezoidal block is fixed to the bottom of the vertical rod, and a sliding rod is fixed to the top of the slide, and the sliding rod is arranged inside the corresponding second spring, and the top end of the sliding rod slides through the top of the connecting tube, and a threaded pressure ring is threadedly connected to the surface of the threaded joint pipe, and the bottom of the threaded pressure ring fits with the top of the sliding rod.

[0008] Furthermore, a first T-shaped limit block is fixed to the bottom of each of the trapezoidal blocks, and two first T-shaped limit grooves adapted to the first T-shaped limit block are symmetrically provided on the inner wall of the bottom of the connecting tube.

[0009] Furthermore, a second T-shaped limit block is fixed to one side wall of the slide plate, and second T-shaped limit grooves adapted to the second T-shaped limit block are formed on the inner walls on both sides of the connecting tube.

[0010] Furthermore, the inclined surface of the triangular block is parallel to the inclined surface of the adjacent trapezoidal block.

[0011] Furthermore, two positioning blocks are symmetrically fixed on the top of the connecting pipe, and two positioning grooves adapted to the positioning blocks are symmetrically provided on the inner wall of the top of the connecting tube.

[0012] Furthermore, two sliding holes adapted for the sliding rods are symmetrically provided on the top of the connecting tube.

[0013] Furthermore, the surface of the threaded pressure ring is provided with anti-slip textures.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a large-diameter packer, which has the following beneficial effects:

[0016] The utility model, by arranging the bellows, the connecting pipe, the jack, the through hole, the clamping groove, the first spring, the trapezoidal block, the clamping block, the second spring, the slide plate, the vertical rod, the triangular block, the sliding rod and the threaded pressure ring, can conveniently and quickly disassemble the connecting pipe from the corresponding connecting tube when the main body of the packer is damaged, so that the main body of the packer can be separated from the threaded joint pipe, so the main body of the packer can be easily replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the overall front view structure of the utility model;

[0019] Figure 3 For this utility model Figure 2 Schematic diagram of the cross-section structure at the middle edge AA;

[0020] Figure 4 For this utility model Figure 3 Schematic diagram of the enlarged structure of area B in the middle.

[0021] In the figure: 1. Packer body; 2. Bellows; 3. Connecting pipe; 4. Connecting tube; 5. Socket; 6. Threaded joint pipe; 7. Through hole; 8. Clamping slot; 9. First spring; 10. Trapezoidal block; 11. Clamping block; 12. Second spring; 13. Slide plate; 14. Vertical rod; 15. Triangular block; 16. Sliding rod; 17. Threaded pressure ring; 18. First T-type limit block; 19. First T-type limit groove; 20. Second T-type limit block; 21. Second T-type limit groove; 22. Positioning block; 23. Positioning groove; 24. Sliding hole. 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] Example

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a large-diameter packer proposed in one embodiment of the utility model comprises a packer body 1, bellows 2 are fixed at both ends of the packer body 1, connecting pipes 3 are fixed at the ends of the bellows 2, connecting tubes 4 are sleeved on the outside of the connecting tubes 3, a plug hole 5 for inserting the connecting tubes 3 is provided at the bottom of the connecting tubes 4, a threaded joint pipe 6 is fixed at the top of the connecting tubes 4, a through hole 7 is provided at the top of the connecting tubes 4, slots 8 are provided on both side walls of the connecting tubes 3, first springs 9 are fixed to the inner walls on both sides of the connecting tubes 4, and a trapezoidal block 10 is fixed to one end of the first springs 9. The trapezoidal blocks 10 are all slidably connected in the connecting tube 4, and a block 11 adapted to the card slot 8 is fixed to one side wall of the trapezoidal blocks 10. Two second springs 12 are symmetrically fixed to the top inner wall of the connecting tube 4. A slide plate 13 is fixed to the bottom end of the second spring 12. A side wall of the slide plate 13 is slidably connected to the inner wall of one side adjacent to the connecting tube 4. A vertical rod 14 is fixed to the bottom of the slide plate 13. A triangular block 15 adapted to the adjacent trapezoidal block 10 is fixed to the bottom of the vertical rod 14. A slide bar 16 is fixed to the top of the slide plate 13. The slide bar 16 is arranged inside the corresponding second spring 12. The slide bar 1 The top of each of the first and second springs 6 slides through the top of the connecting tube 4. The surface of the threaded joint pipe 6 is threadedly connected with a threaded compression ring 17. The bottom of the threaded compression ring 17 fits with the top of the slide bar 16. When the packer body 1 is damaged and needs to be removed from the two connecting tubes 4, the threaded compression ring 17 can be rotated to make the threaded compression ring 17 rotate away from the connecting tube 4. It should be noted that the first spring 9 and the second spring 12 in the drawings of the specification are both in a stretched state. When the threaded compression ring 17 is rotated away from the connecting tube 4, the limit of the slide bar 16 can be reduced. Under the elastic force of the second spring 12, the slide plate 13 can move upward, and the slide plate 13 can drive the corresponding triangular block 15 to move upward through the vertical rod 14, so that the pressure on the corresponding trapezoidal block 10 can be released. Under the elastic force of the first spring 9, the trapezoidal block 10 can be driven to move away from the connecting pipe 3, so that the blocking block 11 can be disengaged from the corresponding card groove 8 on the connecting pipe 3, so that the restriction on the connecting pipe 3 can be released, so the connecting pipe 3 can be pulled out from the corresponding connecting tube 4, so that the packer body 1 can be replaced.

[0025] like Figure 4 As shown, in some embodiments, a first T-shaped limit block 18 is fixed to the bottom of the trapezoidal block 10, and two first T-shaped limit grooves 19 adapted to the first T-shaped limit block 18 are symmetrically provided on the bottom inner wall of the connecting tube 4, so that the trapezoidal block 10 can slide more stably in the connecting tube 4 and will not detach from the bottom inner wall of the connecting tube 4.

[0026] like Figure 4As shown, in some embodiments, a second T-shaped limit block 20 is fixed to one side wall of the slide plate 13, and second T-shaped limit grooves 21 adapted to the second T-shaped limit block 20 are provided on the inner walls on both sides of the connecting tube 4, so that the slide plate 13 can slide more stably in the connecting tube 4 and will not detach from the inner wall of the connecting tube 4.

[0027] like Figure 4 As shown, in some embodiments, the inclined surface of the triangular block 15 is parallel to the inclined surface of the adjacent trapezoidal block 10. When the inclined surface of the triangular block 15 fits with the inclined surface of the trapezoidal block 10 and the triangular block 15 continues to move downward, it can smoothly press the trapezoidal block 10 to move inward.

[0028] like Figure 4 As shown, in some embodiments, two positioning blocks 22 are symmetrically fixed on the top of the connecting tube 3, and two positioning grooves 23 adapted to the positioning blocks 22 are symmetrically opened on the top inner wall of the connecting tube 4. When the positioning blocks 22 are inserted into the corresponding positioning grooves 23, the card block 11 can be aligned with the corresponding card groove 8 on the connecting tube 3, thereby facilitating the insertion of the card block 11 into the corresponding card groove 8.

[0029] like Figure 4 As shown, in some embodiments, two sliding holes 24 adapted to the sliding rod 16 are symmetrically opened on the top of the connecting tube 4 so as to enable the sliding rod 16 to smoothly pass through the top of the connecting tube 4 .

[0030] like Figure 1 As shown, in some embodiments, the surface of the threaded pressing ring 17 is provided with anti-skid patterns, which can provide a good anti-skid effect, thereby facilitating the user to rotate the threaded pressing ring 17 .

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A large-diameter packer, comprising a packer body (1), characterized in that: Both ends of the packer body (1) are fixed with bellows (2), the ends of the bellows (2) are fixed with connecting pipes (3), the outer sides of the connecting pipes (3) are sleeved with connecting tubes (4), the bottom of the connecting tubes (4) are provided with a plug hole (5) for inserting the connecting pipes (3), the top of the connecting tubes (4) are fixed with threaded joint pipes (6), the top of the connecting tubes (4) are provided with through holes (7), both side walls of the connecting pipes (3) are provided with card slots (8), both side inner walls of the connecting tubes (4) are fixed with first springs (9), one end of the first springs (9) is fixed with a trapezoidal block (10), the trapezoidal block (10) is slidably connected in the connecting tubes (4), and one side wall of the trapezoidal block (10) is fixed with a card block (11) adapted to the card slot (8), Two second springs (12) are symmetrically fixed on the top inner wall of the connecting tube (4), and a slide plate (13) is fixed to the bottom end of each of the second springs (12). One side wall of the slide plate (13) is slidably connected to the inner wall of the side adjacent to the connecting tube (4). A vertical rod (14) is fixed to the bottom of each of the slide plates (13), and a triangular block (15) adapted to the adjacent trapezoidal block (10) is fixed to the bottom of each of the vertical rods (14). A sliding rod (16) is fixed to the top of each of the slide plates (13), and the sliding rod (16) is arranged inside the corresponding second spring (12). The top end of each of the sliding rods (16) slides through the top of the connecting tube (4). A threaded pressing ring (17) is threadedly connected to the surface of the threaded joint pipe (6), and the bottom of the threaded pressing ring (17) fits the top of the sliding rod (16).

2. A large diameter packer according to claim 1, characterized in that: A first T-shaped limit block (18) is fixed to the bottom of each of the trapezoidal blocks (10), and two first T-shaped limit grooves (19) adapted to the first T-shaped limit blocks (18) are symmetrically formed on the inner wall of the bottom of the connecting tube (4).

3. A large diameter packer according to claim 1, characterized in that: A second T-shaped limit block (20) is fixed to one side wall of the slide plate (13), and second T-shaped limit grooves (21) adapted to fit the second T-shaped limit block (20) are provided on both side inner walls of the connecting tube (4).

4. A large diameter packer according to claim 1, characterized in that: The inclined surface of the triangular block (15) is parallel to the inclined surface of the adjacent trapezoidal block (10).

5. A large diameter packer according to claim 1, characterized in that: Two positioning blocks (22) are symmetrically fixed on the top of the connecting tube (3), and two positioning grooves (23) adapted to the positioning blocks (22) are symmetrically provided on the inner wall of the top of the connecting tube (4).

6. A large diameter packer according to claim 1, characterized in that: Two sliding holes (24) adapted to the sliding rod (16) are symmetrically formed on the top of the connecting tube (4).

7. A large diameter packer according to claim 1, characterized in that: The surface of the threaded pressure ring (17) is provided with anti-slip patterns.

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