Coiled tubing base- packer drag packer

Abstract

The utility model discloses a continuous oil pipe bottom seals drags packer, including the central pipe, the central pipe is fixedly connected with the rubber cylinder seat, the bottom fixedly connected with the rubber cylinder main part of rubber cylinder seat, the bottom fixedly connected with the lower cone body of rubber cylinder main part, the lower cone body is connected with the central pipe slidingly, the central pipe is provided with the central pipe and is equipped with the central pipe, and the central pipe is fixedly connected with the central pipe on the central pipe, and the upper surface of central pipe is equipped with four first sliding slots, and every first sliding slot all slidingly connected with the slip seat. The utility model discloses, through setting up first sliding rod, moving plate, jointing post, pressing disc and second spring etc., push pressing disc, and pressing disc pushes first sliding rod and moves, and first sliding rod drives moving plate and moves, and compresses second spring, and makes moving plate drive jointing post and separate from the jointing hole, then takes out the slip main part, and the staff replaces the slip main part of serious wear and tear, improves the replacement efficiency.

Description

Technical Field

[0001] This utility model relates to the field of packer technology, and in particular to a continuous tubing bottom seal drag packer. Background Technology

[0002] Currently, packers used in oil and gas extraction operations are mainly divided into hydraulic, mechanical, and self-sealing types. Packers are currently the most widely used type of fracturing operation string for sealing reservoirs, and fracturing operations are an important measure for the later stages of oilfield development.

[0003] However, in existing equipment, most packers and slips are fixedly connected, resulting in low efficiency for workers when replacing severely worn slips. Therefore, a continuous tubing bottom seal drag packer is proposed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a continuous tubing bottom seal drag packer.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a continuous tubing bottom seal drag packer, comprising a central tube, a rubber sleeve seat fixedly connected to the central tube, a rubber sleeve body fixedly connected to the bottom of the rubber sleeve seat, a lower cone fixedly connected to the bottom of the rubber sleeve body, the lower cone being slidably connected to the central tube, a centering seat movably provided on the central tube, a centering block fixedly connected to the centering seat, four first sliding grooves provided on the upper surface of the centering seat, a slip seat slidably connected in each first sliding groove, a snap-fit ​​groove provided on one side of each slip seat, a snap-fit ​​block slidably connected in each snap-fit ​​groove, a snap-fit ​​hole provided on one side of each snap-fit ​​block, a slip body fixedly connected to one side of each snap-fit ​​block, a connecting groove provided on the upper surface of each slip seat, and a quick-release structure provided on each slip seat;

[0006] The quick-release structure includes a first sliding rod that is slidably connected to one side of the clamping seat. One end of the first sliding rod is fixedly connected to a movable plate. One side of the movable plate is fixedly connected to a locking post. The locking post is slidably connected to one side of the clamping seat and is adapted to a corresponding locking hole. Pushing the pressing plate pushes the first sliding rod to move. The first sliding rod drives the movable plate to move and compresses the second spring, causing the movable plate to drive the locking post to disengage from the locking hole.

[0007] As a further description of the above technical solution:

[0008] The other end of the first sliding rod is fixedly connected to a pressing plate. A second spring is sleeved on the first sliding rod. One end of the second spring is fixedly connected to one side of the clamping seat, and the other end is fixedly connected to one side of the pressing plate. Through the elastic reset of the second spring, the pressing plate drives the moving plate to move through the first sliding rod, so that the moving plate drives the clamping post to quickly clamp into the clamping hole.

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

[0010] A connecting post is fixedly connected to the upper surface of the pressing plate. A second sliding groove is provided on one side of the connecting post. A second sliding rod is fixedly connected inside the second sliding groove. A locking block is slidably connected to the second sliding rod. The locking block is adapted to the connecting groove. Pushing the locking block upward will disengage the locking block from the connecting groove and compress the third spring.

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

[0012] A third spring is fitted on the second sliding rod. One end of the third spring is fixedly connected to the inner top of the second sliding groove, and the other end is fixedly connected to the upper surface of the locking block. When the locking block is released, the locking block is pushed to slide on the second sliding rod under the elastic reset of the third spring, and the locking block is re-engaged into the connecting groove to mechanically lock the pressing plate.

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

[0014] Each of the three slip seats has a third sliding groove at its bottom. A third sliding rod is slidably connected through one side of the inner side of each third sliding groove. One end of each third sliding rod is fixedly connected to the inner side of the corresponding first sliding groove. The lower cone presses downward, pushing the four slip seats to move outward on the corresponding third sliding rod.

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

[0016] The other end of each of the third sliding rods is fixedly connected to a limiting block, and each limiting block is slidably connected in the corresponding third sliding groove. The limiting block limits the movement of the locking seat.

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

[0018] Each of the third sliding rods is fitted with a first spring. One end of each first spring is fixedly connected to the inner side of the corresponding third sliding groove, and the other end is fixedly connected to the side of the corresponding limiting block. When the lower cone moves upward, the elastic reset of the first spring pushes the slip seat to move, so that the slip body quickly disengages from the inner wall of the sleeve.

[0019] This utility model has the following beneficial effects:

[0020] 1. Compared with the existing technology, this coiled tubing bottom seal drag packer, by setting a first sliding rod, a moving plate, a snap-fit ​​post, a pressing plate and a second spring, pushes the pressing plate, the pressing plate pushes the first sliding rod to move, the first sliding rod drives the moving plate to move, and compresses the second spring, so that the moving plate drives the snap-fit ​​post to disengage from the snap-fit ​​hole, and then the slip body can be removed, which makes it convenient for workers to replace the severely worn slip body and improves the replacement efficiency.

[0021] 2. Compared with the prior art, this coiled tubing bottom seal drag packer, by setting a connecting column, a second sliding rod, a locking block and a third spring, releases the locking block, and under the elastic reset of the third spring, pushes the locking block to slide on the second sliding rod, and makes the locking block re-engage into the connecting groove, thus mechanically locking the pressing plate and improving the stability of the pressing plate. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of a continuous tubing bottom seal drag packer proposed in this utility model;

[0023] Figure 2 This utility model proposes a continuous tubing bottom seal drag packer. Figure 1 - Enlarged view of section A;

[0024] Figure 3 This is a plan view of a continuous tubing bottom seal drag packer proposed in this utility model;

[0025] Figure 4 This is a cross-sectional view of the centering seat of a continuous tubing bottom seal drag packer proposed in this utility model;

[0026] Figure 5 This is a plan view of the centering seat of a continuous tubing bottom seal drag packer proposed in this utility model;

[0027] Figure 6 This is a schematic diagram of a quick-release structure for a continuous tubing bottom seal drag packer proposed in this utility model;

[0028] Figure 7 Exploded view of the quick-release structure of a continuous tubing bottom seal drag packer proposed in this utility model;

[0029] Figure 8 This utility model proposes a continuous tubing bottom seal drag packer. Figure 7 - Enlarged view of section B.

[0030] Legend:

[0031] 1. Central tube; 2. Glue sleeve seat; 3. Glue sleeve body; 4. Lower cone; 5. Straightening seat; 6. Straightening block; 7. First sliding groove; 8. Third sliding rod; 9. Limiting block; 10. Vase seat; 11. First spring; 12. Third sliding groove; 13. Snap-fit ​​groove; 14. Connecting groove; 15. Snap-fit ​​block; 16. Vase body; 17. Quick-release structure; 171. First sliding rod; 172. Moving plate; 173. Snap-fit ​​post; 174. Pressing plate; 175. Second spring; 176. Connecting post; 177. Second sliding rod; 178. Locking block; 179. Third 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 8 This utility model provides a continuous tubing bottom seal drag packer, comprising a central tube 1, a rubber sleeve seat 2 fixedly connected to the central tube 1, a rubber sleeve body 3 fixedly connected to the bottom of the rubber sleeve seat 2, a lower cone 4 fixedly connected to the bottom of the rubber sleeve body 3, the lower cone 4 being slidably connected to the central tube 1, a central support seat 5 movably mounted on the central tube 1, a central support block 6 fixedly connected to the central support seat 5, four first sliding grooves 7 formed on the upper surface of the central support seat 5, a slip seat 10 slidably connected in each first sliding groove 7, a snap-fit ​​groove 13 formed on one side of each slip seat 10, a snap-fit ​​block 15 slidably connected in each snap-fit ​​groove 13, a snap-fit ​​hole formed on one side of each snap-fit ​​block 15, a slip body 16 fixedly connected to one side of each snap-fit ​​block 15, a connecting groove 14 formed on the upper surface of each slip seat 10, and a quick-release structure 17 on each slip seat 10. Each slip seat 10 has a third sliding groove 12 at its bottom. A third sliding rod 8 is slidably connected through one side of the interior of each third sliding groove 12. One end of each third sliding rod 8 is fixedly connected to one side of the interior of the corresponding first sliding groove 7. The other end of each third sliding rod 8 is fixedly connected to a limit block 9. Each limit block 9 is slidably connected in the corresponding third sliding groove 12. A first spring 11 is sleeved on each third sliding rod 8. One end of each first spring 11 is fixedly connected to one side of the interior of the corresponding third sliding groove 12, and the other end is fixedly connected to one side of the corresponding limit block 9. By pressing down with the lower cone 4, the four slip seats 10 are pushed to move outward on the corresponding third sliding rod 8 and compress the corresponding first spring 11. The slip seats 10 drive the corresponding slip body 16 to move, so that the slip body 16 bites into the inner wall of the sleeve.

[0034] To achieve quick disassembly, the quick disassembly structure 17 includes a first sliding rod 171 that is slidably connected to one side of the slip seat 10. One end of the first sliding rod 171 is fixedly connected to a moving plate 172, and one side of the moving plate 172 is fixedly connected to a locking post 173. The locking post 173 is slidably connected to one side of the slip seat 10 and is adapted to the corresponding locking hole. The other end of the first sliding rod 171 is fixedly connected to a pressing plate 174. A second spring 175 is sleeved on the first sliding rod 171. One end of the second spring 175 is fixedly connected to one side of the slip seat 10, and the other end is fixedly connected to one side of the pressing plate 174. Pushing the pressing plate 174 pushes the first sliding rod 171 to move. The first sliding rod 171 drives the moving plate 172 to move and compresses the second spring 175, so that the moving plate 172 drives the locking post 173 to disengage from the locking hole. Then the slip body 16 can be removed, which makes it convenient for workers to replace the severely worn slip body 16 and improves the replacement efficiency.

[0035] To achieve mechanical locking, a connecting post 176 is fixedly connected to the upper surface of the pressing plate 174. A second sliding groove is provided on one side of the connecting post 176. A second sliding rod 177 is fixedly connected inside the second sliding groove. A locking block 178 is slidably connected to the second sliding rod 177. A third spring 179 is sleeved on the second sliding rod 177. One end of the third spring 179 is fixedly connected to the inner top of the second sliding groove, and the other end is fixedly connected to the upper surface of the locking block 178. The locking block 178 is adapted to the connecting groove 14. When the locking block 178 is released, under the elastic reset of the third spring 179, the locking block 178 is pushed to slide on the second sliding rod 177 and re-engages into the connecting groove 14, thus mechanically locking the pressing plate 174 and improving the stability of the pressing plate 174.

[0036] Working principle: Pushing the locking block 178 upwards disengages it from the connecting groove 14 and compresses the third spring 179. Then, the pressing plate 174 is pushed, causing the first sliding rod 171 to move. The first sliding rod 171 moves the moving plate 172 and compresses the second spring 175, causing the moving plate 172 to disengage the locking pin 173 from the locking hole. Then, the slip body 16 is removed, facilitating the replacement of severely worn slip bodies 16 and improving replacement efficiency. After replacement, the pressing plate 174 is released. The elasticity of the second spring 175 pushes the pressing plate 174, causing the pressing plate 174 to move via the first sliding rod 171, which in turn moves the moving plate 172. The moving plate 172 then causes the locking pin 173 to quickly engage into the locking hole, fixing the locking body 16. At the same time, the locking block 178 is released, and under the elastic reset of the third spring 179, the locking block 178 is pushed to slide on the second sliding rod 177, and the locking block 178 is re-engaged into the connecting groove 14, mechanically locking the pressing plate 174 and improving its stability.

[0037] 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 coiled tubing base- pack drag packer comprising a central tube (1), characterized in that: A rubber sleeve seat (2) is fixedly connected to the central tube (1). A rubber sleeve body (3) is fixedly connected to the bottom of the rubber sleeve seat (2). A lower cone (4) is fixedly connected to the bottom of the rubber sleeve body (3). The lower cone (4) is slidably connected to the central tube (1). A straightening seat (5) is movably provided on the central tube (1). A straightening block (6) is fixedly connected to the straightening seat (5). Four first sliding grooves (7) are opened on the upper surface of the straightening seat (5). Each first sliding groove (7) Each of the following is slidably connected to a locking seat (10): a locking groove (13) is provided on one side of each locking seat (10); a locking block (15) is slidably connected in each locking groove (13); a locking hole is provided on one side of each locking block (15); a locking body (16) is fixedly connected to one side of each locking block (15); a connecting groove (14) is provided on the upper surface of each locking seat (10); and a quick-release structure (17) is provided on each locking seat (10). The quick-release structure (17) includes a first sliding rod (171) that is slidably connected to one side of the slip seat (10). One end of the first sliding rod (171) is fixedly connected to a moving plate (172). One side of the moving plate (172) is fixedly connected to a snap-fit ​​post (173). The snap-fit ​​post (173) is slidably connected to one side of the slip seat (10) and is adapted to the corresponding snap-fit ​​hole.

2. The coiled tubing base-encapsulated packer of claim 1, wherein: The other end of the first sliding rod (171) is fixedly connected to a pressing plate (174). A second spring (175) is sleeved on the first sliding rod (171). One end of the second spring (175) is fixedly connected to one side of the locking seat (10), and the other end is fixedly connected to one side of the pressing plate (174).

3. A coiled tubing base-encapsulated, drag-type packer according to claim 2, characterized by: A connecting post (176) is fixedly connected to the upper surface of the pressing plate (174). A second sliding groove is provided on one side of the connecting post (176). A second sliding rod (177) is fixedly connected inside the second sliding groove. A locking block (178) is slidably connected to the second sliding rod (177). The locking block (178) is adapted to the connecting groove (14).

4. The coiled tubing base-encapsulated packer of claim 3, wherein: A third spring (179) is fitted on the second sliding rod (177). One end of the third spring (179) is fixedly connected to the inner top of the second sliding groove, and the other end is fixedly connected to the upper surface of the locking block (178).

5. The coiled tubing base-encapsulated packer of Claim 1, wherein: Each of the three slots (10) has a third sliding groove (12) at its bottom. A third sliding rod (8) is slidably connected through one side of the interior of each of the three sliding grooves (12). One end of each of the three sliding rods (8) is fixedly connected to one side of the interior of the corresponding first sliding groove (7).

6. A coiled tubing base-encapsulated, push-poppable packer according to claim 5, characterized by: The other end of each of the third sliding rods (8) is fixedly connected to a limiting block (9), and each limiting block (9) is slidably connected in the corresponding third sliding groove (12).

7. A coiled tubing base-encapsulated, push-poppable packer according to claim 6, characterized by: Each third sliding rod (8) is sleeved with a first spring (11), one end of each first spring (11) is fixedly connected with the inner side of the corresponding third sliding groove (12), and the other end is fixedly connected with one side of the corresponding limiting block (9).

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