Novel anti-rotation well cementation rubber plug
By using a disc-shaped table and anti-folding wing plate structure in the oil drilling cementing glue plug to prevent folding, and fixing the high-strength fiber ring inside to improve tensile resistance, the existing glue plug is easily folded and insufficient tensile resistance during the falling process, and a more efficient cementing process is achieved.
Patent Information
- Application Number
- CN202421700297.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-18
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-18
AI Technical Summary
The existing oil drilling cementing plugs are easy to fold during the fall process, and their tensile resistance is insufficient, which affects the working process.
A new type of anti-rotating cementing plug was designed, using a disc-shaped table and anti-folding wing plate structure to prevent folding, and a high-strength polyester fiber ring and carbon fiber ring were fixedly connected inside the plug to improve tensile resistance.
It effectively prevents the glue plug from folding during the falling process and remains stable under high-strength pulling, which improves the tensile performance of the glue plug and solves the problem of inconvenient anti-folding and tensile resistance in the prior art.
Smart Images
Figure CN222909986U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of oil drilling and production, in particular to a novel anti-rotation cementing plug. Background Technique
[0002] In the oil drilling engineering, it is necessary to use oil drilling equipment to reach the target formation along the designed track from the ground. During the process of oil drilling and cementing, it is usually necessary to use a cementing plug to isolate and scrape the mucus such as mud on the inner wall of the casing.
[0003] In the current oil drilling and cementing operations, it is necessary to wait for the cement to solidify, and then use a drill bit to crush the fixed plug and the cement below the plug, and then squeeze the debris out through the well fluid to ensure the smoothness of the oil well.
[0004] In the existing technology, it is not convenient to prevent folding. During the falling process of the plug, since it is made of a colloid itself, it will fold after contacting the pipeline, which affects the working process. In addition, the existing plug is not convenient for anti-tensile. During high-intensity drilling and placement, due to the insufficient strength of its own colloid, it will break and affect the working process. Therefore, a novel anti-rotation cementing plug is proposed to solve the above problems. Content of the Utility Model
[0005] In order to make up for the above deficiencies, the utility model provides a novel anti-rotation cementing plug, aiming to improve the problems of inconvenient anti-folding and inconvenient anti-tensile in the existing technology.
[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0007] A novel anti-rotation cementing plug includes a first plug. A plug head is fixedly connected to the top end of the first plug. Disk-shaped platforms are fixedly connected to the outside of the first plug at equal intervals. A toothed groove is opened at the bottom end of the first plug. The toothed groove is engaged with an anti-rotation mechanism. The anti-rotation mechanism is used to prevent the plug from rotating with the drill bit. The bottom of the anti-rotation mechanism is fixedly connected to a second plug. Disk-shaped platforms are fixedly connected to the outside of the second plug at equal intervals. Anti-folding mechanisms are fixedly connected to the disk-shaped platforms at equal intervals in a circumferential distribution. The anti-folding mechanisms are used to prevent the second plug from folding. Tensile mechanisms are fixedly connected inside the first plug and the second plug. The tensile mechanisms are used to enhance the anti-tensile performance of the first plug and the second plug.
[0008] As a further description of the above technical solution:
[0009] The anti-rotation mechanism includes anti-rotation teeth. The bottom end of the anti-rotation teeth is fixedly connected to the top end of the second plug. The anti-rotation teeth are engaged with the toothed groove.
[0010] As a further description of the above technical solution:
[0011] The anti-folding mechanism includes anti-folding wing plates. The bottom ends of the plurality of anti-folding wing plates and the bottom ends of the disc-shaped platforms on the second rubber plug are fixedly connected in a circular distribution, and the anti-folding wing plates are located between two disc-shaped platforms;
[0012] As a further description of the above technical solution:
[0013] The tensile resistance mechanism includes a high-strength polyester fiber ring. The outer side of the high-strength polyester fiber ring is fixedly connected to the middle upper parts of the inner sides of the first rubber plug and the second rubber plug, and carbon fiber rings are fixedly connected to the middle lower parts of the inner sides of the first rubber plug and the second rubber plug;
[0014] As a further description of the above technical solution:
[0015] The bottom end of the second rubber plug is fixedly connected with a connecting plate, and a first through hole is opened in the middle of the bottom end of the connecting plate;
[0016] As a further description of the above technical solution:
[0017] A connecting ring sleeve is slidably connected to the outside of the anti-rotation mechanism, and a tightening belt is fixedly connected inside the connecting ring sleeve;
[0018] As a further description of the above technical solution:
[0019] The inclination direction from the low end to the high end of the anti-rotation teeth and the tooth-shaped grooves is the same as the rotation direction of the drill bit.
[0020] The utility model has the following beneficial effects:
[0021] 1. In the utility model, through the disc-shaped platforms on the second rubber plug, anti-folding wing plates are arranged between two disc-shaped platforms. During the falling process of the rubber plug, since the upper ends are fixedly connected to the disc-shaped platforms, when encountering turning or collision, the annularly distributed anti-folding wing plates can prevent the second rubber plug from folding easily, thus achieving the effect of preventing folding and solving the problem of inconvenient anti-folding in the prior art.
[0022] 2. In the utility model, a high-strength polyester fiber ring and a carbon fiber ring are respectively fixedly connected to the middle parts of the inner sides of the first rubber plug and the second rubber plug. During the working process of the rubber plug, if encountering high-strength pulling, the high-strength polyester fiber ring and the carbon fiber ring can share most of the force, so that the rubber plug only bears a very small part of the force, thus achieving a certain tensile resistance performance of the rubber plug and solving the problem of inconvenient tensile resistance in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a three-dimensional schematic diagram of a new type of anti-rotation cementing plug proposed by the utility model;
[0024] Figure 2 Schematic diagram of the structure of the first rubber plug of a new type of anti-rotation cementing rubber plug proposed by the present utility model;
[0025] Figure 3 Schematic diagram of the structure of the second rubber plug of a new type of anti-rotation cementing rubber plug proposed by the present utility model;
[0026] Figure 4 Schematic diagram of the structure of the tensile mechanism of a new type of anti-rotation cementing rubber plug proposed by the present utility model.
[0027] Legend:
[0028] 1. First rubber plug; 101. Disc-shaped platform; 102. Plug head; 103. Tooth-shaped groove; 104. High-strength polyester fiber ring; 105. Carbon fiber ring; 2. Connecting ring sleeve; 201. Tightening band; 3. Second rubber plug; 301. Anti-fold wing plate; 302. Connecting plate; 303. Anti-rotation tooth. Specific embodiments
[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0030] Refer to Figures 1 - 4 , an embodiment provided by the present utility model: a new type of anti-rotation cementing rubber plug, including a first rubber plug 1, a plug head 102 is fixedly connected to the top end of the first rubber plug 1, disc-shaped platforms 101 are fixedly connected to the outside of the first rubber plug 1 at equal intervals, a tooth-shaped groove 103 is opened at the bottom end of the first rubber plug 1, an anti-rotation mechanism is snap-fitted in the tooth-shaped groove 103, the anti-rotation mechanism includes an anti-rotation tooth 303, the bottom end of the anti-rotation tooth 303 is fixedly connected to the top end of the second rubber plug 3, the anti-rotation tooth 303 is snap-fitted with the tooth-shaped groove 103, the anti-rotation mechanism is used to prevent the rubber plug from rotating with the drill bit, the bottom of the anti-rotation mechanism is fixedly connected to a second rubber plug 3, a connecting plate 302 is fixedly connected to the bottom end of the second rubber plug 3, a first through hole is opened in the middle of the bottom end of the connecting plate 302, a connecting ring sleeve 2 is slidably connected to the outside of the anti-rotation mechanism, a tightening band 201 is fixedly connected inside the connecting ring sleeve 2, and the inclination direction from the low end to the high end of the anti-rotation tooth 303 and the tooth-shaped groove 103 is the same as the rotation direction of the drill bit.
[0031] Refer to Figures 1 - 4, on the outer side of the second rubber stopper 3, a disc-shaped platform 101 is fixedly connected at equal intervals. On the disc-shaped platform 101, anti-fold mechanisms are fixedly connected at equal intervals in a circular distribution. The anti-fold mechanism includes anti-fold wing plates 301. The bottoms of multiple anti-fold wing plates 301 and the bottom of the disc-shaped platform 101 on the second rubber stopper 3 are fixedly connected in a circular distribution. The anti-fold wing plates 301 are located between two disc-shaped platforms 101. The anti-fold mechanism is used to prevent the second rubber stopper 3 from folding. The size of the top of the anti-fold wing plate 301 is smaller than the radius of the disc-shaped platform 101. Because in such a size, it will neither affect the function of the disc-shaped platform 101 nor cause the rubber stopper to fold during the descent. Inside both the first rubber stopper 1 and the second rubber stopper 3, a tensile strength enhancing mechanism is fixedly connected. The tensile strength enhancing mechanism is used to enhance the tensile strength of the first rubber stopper 1 and the second rubber stopper 3. The tensile strength enhancing mechanism includes a high-strength polyester fiber ring 104. The outer side of the high-strength polyester fiber ring 104 is fixedly connected to the middle and lower parts of the inner sides of the first rubber stopper 1 and the second rubber stopper 3. Carbon fiber rings 105 are fixedly connected to the middle and upper parts of the inner sides of the first rubber stopper 1 and the second rubber stopper 3. The tensile strength enhancing mechanism uses two different materials because during the process of pulling the rubber stopper, the two fiber rings of different materials can share different degrees of force, so that it will not easily crack itself. At the same time, using fiber rings of different materials is also to provide double protection for the rubber stopper.
[0032] Working principle: After the tooth-shaped groove 103 on the first rubber stopper 1 and the anti-rotation teeth 303 on the second rubber stopper 3 are engaged, through the connecting ring sleeve 2 with a tightening belt 201 inside, the first rubber stopper 1 and the second rubber stopper 3 form a whole rubber stopper. Subsequently, as the rubber stopper falls in the pipeline, on the disc-shaped platform 101 of the second rubber stopper 3, anti-fold wing plates 301 are arranged between two disc-shaped platforms 101. During the descent of the rubber stopper, since the upper end of the anti-fold wing plate 301 is fixedly connected to the disc-shaped platform 101, when encountering turning or collision, the anti-fold wing plates 301 distributed in a circular pattern can prevent the second rubber stopper 3 from folding easily. After reaching the position, the drill bit passes through the plug head 102 and the first through hole. After the drill bit starts working, it makes the second rubber stopper 3 have a tendency to rotate, but the disc-shaped platform 101 of the first rubber stopper 1 fixes the first rubber stopper 1 above. Subsequently, due to the limitation of the tooth-shaped groove 103 on the first rubber stopper 1, the anti-rotation teeth 303 also prevent the second rubber stopper 3 from rotating. Inside the middle parts of the inner sides of the first rubber stopper 1 and the second rubber stopper 3, a high-strength polyester fiber ring 104 and a carbon fiber ring 105 are fixedly connected respectively. During the working process of the rubber stopper, if it encounters high-strength pulling, the high-strength polyester fiber ring 104 and the carbon fiber ring 105 can share most of the force, so that the rubber stopper only bears a very small part of the force, thus achieving a certain tensile strength for the rubber stopper.
[0033] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A novel anti-rotation cementing rubber plug, comprising a first rubber plug (1), characterized in that: The top of the first rubber plug (1) is fixedly connected to a plug head (102), the outer side of the first rubber plug (1) is equidistantly fixedly connected to a disc-shaped platform (101), the bottom of the first rubber plug (1) is provided with a toothed groove (103), the toothed groove (103) is snap-connected with an anti-rotation mechanism, the anti-rotation mechanism is used to prevent the rubber plug from rotating with the drill bit, the bottom of the anti-rotation mechanism is fixedly connected to a second rubber plug (3), the outer side of the second rubber plug (3) is equidistantly fixedly connected to a disc-shaped platform (101), the disc-shaped platform (101) is annularly distributed and equidistantly fixedly connected with anti-folding mechanisms, the anti-folding mechanisms are used to prevent the second rubber plug (3) from folding, the first rubber plug (1) and the second rubber plug (3) are both fixedly connected with anti-tensile mechanisms inside, the anti-tensile mechanisms are used to enhance the tensile resistance of the first rubber plug (1) and the second rubber plug (3).
2. The novel anti-rotation cementing plug according to claim 1 is characterized by: The anti-rotation mechanism comprises an anti-rotation tooth (303), the bottom end of the anti-rotation tooth (303) is fixedly connected to the top end of the second rubber plug (3), and the anti-rotation tooth (303) is snap-connected to the tooth-shaped groove (103).
3. The novel anti-rotation cementing plug according to claim 1 is characterized by: The anti-folding mechanism comprises an anti-folding wing plate (301), the bottom ends of a plurality of the anti-folding wing plates (301) are annularly distributed and fixedly connected to the bottom end of the disc-shaped platform (101) on the second rubber plug (3), and the anti-folding wing plate (301) is located between two disc-shaped platforms (101).
4. The novel anti-rotation cementing plug according to claim 1 is characterized by: The tensile mechanism comprises a high-strength polyester fiber ring (104), the outer side of the high-strength polyester fiber ring (104) is fixedly connected to the middle and lower parts of the inner sides of the first rubber plug (1) and the second rubber plug (3), and the middle and upper parts of the inner sides of the first rubber plug (1) and the second rubber plug (3) are fixedly connected to a carbon fiber ring (105).
5. The novel anti-rotation cementing plug according to claim 1 is characterized by: The bottom end of the second rubber plug (3) is fixedly connected to a connecting plate (302), and a first through hole is provided in the middle of the bottom end of the connecting plate (302).
6. The novel anti-rotation cementing plug according to claim 1 is characterized by: A connecting ring sleeve (2) is slidably connected to the outside of the anti-rotation mechanism, and a tightening belt (201) is fixedly connected to the inside of the connecting ring sleeve (2).
7. The novel anti-rotation cementing plug according to claim 2 is characterized by: The inclination direction of the anti-rotation teeth (303) and the tooth-shaped grooves (103) from the lower end to the higher end is consistent with the rotation direction of the drill bit.