Grading cementing device of integrated pipe external packer device
By designing a graded cement injector with a clamp stick and a fixed block, the problem of early opening and closing failure is solved, ensuring the normal operation of the cementing device and improving cementing quality and completion efficiency.
Patent Information
- Application Number
- CN202422818643.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-11-19
AI Technical Summary
The existing graded cement injectors of the integrated pipe outer sealer device have problems of failure in opening holes and closing holes in advance, resulting in long-section cement plugs and large-section empty sleeves remaining in the casing, which cannot form wellbore sealing, increasing the operation cycle of drilling and removing cement plugs, affecting the cement quality and completion cycle.
A graded cement injector with integrated pipe outer sealer device is designed. Through the cooperation of the rod and the fixed block, the stable installation and convenient removal of the movable block and the sealing block are achieved, ensuring the normal injection and discharge of cement, and the rubber sealing gasket and spring structure are used to ensure the smooth progress of opening and closing holes.
The normal opening and closing of the graded cement injector is achieved, which avoids early opening and closing failures, improves cement quality and completion efficiency, and reduces the cycle of drilling and removing cement plugs.
Smart Images
Figure CN223241403U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of staged cementing devices, in particular to a staged cementing device with an integrated external pipe packer device. Background Art
[0002] In the field of deep and ultra-deep oil and gas well cementing, there is a problem of cementing long open hole leaky layers. In order to avoid the difficulty of returning the cement slurry of single-stage cementing in one time, resulting in the formation of large sections of empty casing and poor cementing quality, a staged cementing process has been adopted. A staged cementer is installed in the casing. The open hole section below the staged cementer is sealed by the first-level cementing, and a gravity plug is dropped to perform the staged cementer opening operation. Then, the second-level cementing operation is performed to seal the well section above the staged cementer, and the closing plug is used to close the staged cementer at the same time. However, the staged cementer of the existing integrated external pipe packer device has problems of premature opening, closing and closing failure, resulting in long sections of cement plugs and large sections of empty casing remaining in the casing, making it impossible to form a wellbore seal, increasing the next step of drilling and removing cement plugs and special closing operations, which directly leads to poor cementing quality and extended completion cycle. Utility Model Content
[0003] (1) Technical problems solved
[0004] In view of the deficiencies in the prior art, the utility model provides a staged cementing device integrated with an external pipe packer device, which solves the problems of premature opening and closing of holes and failure of closing of holes.
[0005] (2) Technical solution
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a graded cementing device with an integrated external pipe sealing device, comprising a device body, a graded tube slidably connected in the device body, and a plurality of through holes opened in the graded tube, a top rod is slidably connected to the interior of the device body, the bottom end of the top rod is fastened and connected to the graded tube, the top of the top rod is movably sleeved with a movable block, the bottom of the movable block is fastened with a sealing block, the sealing block is inserted into the interior of the top rod, the outside of the movable block is fastened with a handle, and the bottom of the movable block is fastened with two groups of fixed blocks, the outside of the top rod is fastened with two groups of center shafts, the outside of the center shaft is movably sleeved with a swing plate, and the top of the swing plate is fastened to the clamping rod clamped in the fixed block.
[0007] Preferably, a sealing gasket is fastened to the top end of the body, the sealing gasket is a rubber sealing gasket, and the sealing gasket is located on the outside of the top rod.
[0008] Preferably, a mounting plate is fastened inside the body, a slider is fastened outside the grading tube, and a second spring is fastened between the slider and the mounting plate.
[0009] Preferably, two groups of support plates are fastened to the outer side of the top rod, and a first spring is fastened between the support plate and the swing plate.
[0010] Preferably, two groups of anti-slip blocks are fastened to the outer side of the central shaft, and the two groups of anti-slip blocks are respectively located on the left and right sides of the swing plate.
[0011] (3) Beneficial effects
[0012] Compared with the prior art, the present invention provides a staged cementing device integrated with an external pipe packer device, which has the following beneficial effects:
[0013] The graded cementing device of the integrated external pipe sealer device cooperates with the clamping rod and the fixed block. After the clamping rod is clamped into the fixed block, the movable block and the sealing block will be stably installed in the top rod. At this time, cement cannot be injected into the device. After the clamping rod is separated from the fixed block, the movable block and the sealing block can be easily removed from the device. At this time, cement can be easily injected into the device and discharged outward through the through hole, ensuring the normal opening and closing of the hole of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the structure of the utility model;
[0015] Figure 2 This is a partial structural cross-sectional view of the body, movable block and top rod of the utility model;
[0016] Figure 3 for Figure 2 Exploded view of the structure after omitting the body, stepper tube, second spring, slider, mounting plate, ejector rod, and sealing gasket.
[0017] In the figure: 1. Body; 2. Grading tube; 3. Clamping rod; 4. First spring; 5. Support plate; 6. Handle; 7. Movable block; 8. Fixed block; 9. Center axis; 10. Swing plate; 11. Push rod; 12. Sealing gasket; 13. Sealing block; 14. Slider; 15. Second spring; 16. Mounting plate; 17. Through hole. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0019] See also Figure 1-3The utility model provides a technical solution: a graded cementing device with an integrated external pipe packer device, comprising a device body 1, a graded pipe 2 slidably connected to the device body 1, and a plurality of through holes 17 opened in the graded pipe 2. A top stick 11 is slidably connected to the inside of the device body 1, and the bottom end of the top stick 11 is fastened and communicated with the graded pipe 2. A sealing gasket 12 is fastened to the top of the device body 1. The sealing gasket 12 is a rubber sealing gasket, and the sealing gasket 12 is located on the outside of the top stick 11. A movable block 7 is movably sleeved on the top of the top stick 11, and a sealing block 13 is fastened to the bottom of the movable block 7. The sealing block 13 is inserted into the inside of the top stick 11, and a handle 6 is fastened to the outside of the movable block 7, and two groups of fixed blocks 8 are fastened to the bottom of the movable block 7. The outside of the top stick 11 is fastened There are two groups of central shafts 9, and a swing plate 10 is movably sleeved on the outer side of the central shaft 9. Two groups of support plates 5 are fastened to the outer side of the top rod 11. A first spring 4 is fastened between the support plate 5 and the swing plate 10. The top of the swing plate 10 is fastened to the clamping rod 3 which is clamped in the fixed block 8. Through the cooperation between the clamping rod 3 and the fixed block 8, after the clamping rod 3 is clamped in the fixed block 8, the movable block 7 and the sealing block 13 will be stably installed in the top rod 11. At this time, cement cannot be injected into the device. After the clamping rod 3 is separated from the fixed block 8, the movable block 7 and the sealing block 13 can be easily removed from the device. At this time, cement can be easily injected into the device, so that the cement is discharged outward through the through hole 17, thereby ensuring the normal opening and closing of the device.
[0020] Specifically, in order to enable the classification tube 2 to move back quickly, a mounting plate 16 is fastened inside the body 1, a slider 14 is fastened outside the classification tube 2, and a second spring 15 is fastened between the slider 14 and the mounting plate 16. Therefore, when the push rod 11 pushes the classification tube 2, the second spring 15 will be squeezed by the slider 14. When the push rod 11 no longer pushes the classification tube 2, the second spring 15 will drive the classification tube 2 to move back quickly by bouncing the slider 14 back.
[0021] Specifically, in order to prevent the swing plate 10 from being dislocated, two sets of anti-slip blocks are fastened to the outside of the central shaft 9, and the two sets of anti-slip blocks are respectively located on the left and right sides of the swing plate 10, thereby limiting the movement of the swing plate 10 by the anti-slip blocks.
[0022] When the hopper 14 is in operation, the hopper 14 is released, and the hopper 14 is in operation again, and the hopper 14 is in operation again, and the hopper 14 is in operation again, and the hopper 14 is in operation again, and the hopper 14 is in operation again, and the hopper 14 is in operation again, and the hopper 14 is in operation again, and the hopper 14 is in operation again, and the hopper 14 is in operation again, and the hopper 14 is in operation again, and the hopper 14 is in operation again, and the hopper 14 is in operation again, and the hopper 14 is in operation again, and the hopper 14 is in operation again, and the hopper 14 is in operation again, and the hopper 14 is in operation again, and the hopper
[0023] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A staged cementing device with an integrated external packer device, comprising a device body (1), a staged pipe (2) slidably connected to the device body (1), and a plurality of through holes (17) provided in the staged pipe (2), characterized in that: The interior of the device body (1) is slidably connected to a top stick (11), the bottom end of the top stick (11) is fastened to and communicated with the grading pipe (2), the top of the top stick (11) is movably sleeved with a movable block (7), the bottom of the movable block (7) is fastened with a sealing block (13), the sealing block (13) is inserted into the interior of the top stick (11), the outer side of the movable block (7) is fastened with a handle (6), and the bottom of the movable block (7) is fastened with two groups of fixed blocks (8), the outer side of the top stick (11) is fastened with two groups of central shafts (9), the outer side of the central shaft (9) is movably sleeved with a swing plate (10), and the top of the swing plate (10) is fastened to a clamping stick (3) clamped in the fixed block (8).
2. A staged cementing device with an integrated external pipe packer device according to claim 1, characterized in that: A sealing gasket (12) is fastened to the top end of the device body (1), wherein the sealing gasket (12) is a rubber sealing gasket, and the sealing gasket (12) is located on the outside of the top rod (11).
3. The staged cementing device of the integrated external pipe packer device according to claim 1, characterized in that: A mounting plate (16) is fastened inside the body (1), a slider (14) is fastened outside the grading tube (2), and a second spring (15) is fastened between the slider (14) and the mounting plate (16).
4. The staged cementing device of the integrated external pipe packer device according to claim 1, characterized in that: Two groups of support plates (5) are fastened to the outer side of the top rod (11), and a first spring (4) is fastened between the support plate (5) and the swing plate (10).
5. The staged cementing device of the integrated external pipe packer device according to claim 1, characterized in that: Two groups of anti-slip blocks are fastened to the outer side of the central shaft (9), and the two groups of anti-slip blocks are respectively located on the left and right sides of the swing plate (10).