Well cementation cement head rubber plug device

Abstract

The utility model discloses a well cementation cement head rubber plug device, which belongs to the technical field of well cementation cement heads and comprises a cement head main body, a rubber plug main body and a placing mechanism are arranged on the inner wall of the cement head main body, the placing mechanism is arranged on the inner wall of the cement head main body, and two rotating rods are rotatably connected to the inner top wall of the cement head main body. Wherein one rotating rod is rotationally connected to the inner wall of the other rotating rod, one end of one rotating rod penetrates through the other rotating rod and is fixedly connected with two clamping blocks, and clamping grooves embedded with the clamping blocks are formed in the top end of the rubber plug body. By means of the mode, the clamping blocks on the two sides of one rotating rod are embedded into the clamping grooves in the rubber plug body, the position of the rubber plug body can be adjusted up and down, the rubber plug body can be conveniently installed, the rubber plug body can be extruded through the lower pressing plate, the installation position of the rubber plug can be adjusted up and down, and the well cementation quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of cementing head technology, specifically to a cementing head plug device. Background Technology

[0002] A cement head is a cementing device installed at the top of the casing during cementing operations, connecting the casing to the surface manifold. The cement head enables operations such as circulation, injection of separator fluid, injection of cement slurry, release of rubber plugs, and slurry replacement. It serves as the central hub for cementing operations at the wellhead of the surface manifold. When using a cement head, rubber plugs are required to separate the fluids.

[0003] Currently, a Chinese patent discloses a mechanical filling device for cement head rubber plugs (authorization announcement number CN218467593U), which is equipped with a compression component. The motor is energized, and the energized motor drives the transmission shaft to rotate, which in turn drives the gear. Under the drive of the gear, the meshing rack drives the movable rod to move downward. With the assistance of the guide seat, the movable rod directionally drives the pressure plate to move downward, pushing the rubber plug evenly so that the rubber plug is in the predetermined position in the cement head, thus avoiding damage to the rubber plug.

[0004] According to the above reference materials, in the above device, the rubber plug is filled in the filling cylinder. The motor drives the gear meshing rack to move the movable rod downward. Through the guide seat, the pressure plate on the movable rod pushes the rubber plug, so that the rubber plug is filled into the predetermined position in the cementing head. However, when the device uses the pressure plate to squeeze and place the rubber plug, the pressure plate can only squeeze the rubber plug. When the rubber plug moves too much or is not precise enough, it can easily affect the injection effect of cement slurry, resulting in the quality of cementing. It is also inconvenient to control the position of the rubber plug, which reduces the effectiveness of the device.

[0005] Based on this, the present invention designs a cement head plug device to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a cement head plug device.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A cement head plug device includes a cement head body, and a plug body is disposed on the inner wall of the cement head body.

[0009] Furthermore, the placement mechanism is located on the inner wall of the cement head body. Two rotating rods are rotatably connected to the inner top wall of the cement head body. One of the rotating rods is rotatably connected to the inner wall of the other rotating rod. One end of one of the rotating rods passes through the other rotating rod and is fixedly connected to two locking blocks. The top of the rubber stopper body is provided with a locking groove that fits into the locking blocks.

[0010] Furthermore, the placement mechanism includes a lower pressure plate slidably connected to the inner wall of the cement head body, two sliders fixedly connected to the outer wall of the lower pressure plate, two sliding grooves that fit into the sliders on both sides of the inner wall of the cement head body, and the top of the lower pressure plate fixedly connected to another rotating rod.

[0011] Furthermore, a threaded sleeve is rotatably connected to the top of the cement head body, and the threaded sleeve is threadedly connected to another rotating rod.

[0012] Furthermore, a handle is fixedly connected to the outer wall of the threaded sleeve.

[0013] Furthermore, a limiting block is fixedly installed at the top of the inner wall of the card block, and the limiting block is disposed on the inner wall of the card slot.

[0014] Furthermore, the top of the limiting block is provided with several evenly distributed limiting grooves.

[0015] Furthermore, one end of one of the rotating rods, away from the lower pressure plate, passes through the other rotating rod and is fixedly connected to a rotating disk. Beneficial effects

[0016] 1. One of the rotating rods has two locking blocks on either side that are embedded in the slots on the rubber plug body and connected to it. This allows for vertical adjustment of the rubber plug body's position, facilitating its installation. The lower pressure plate can compress the rubber plug body. Two sliders cooperate with the sliding grooves to limit and guide the lower pressure plate and the other rotating rod. The limiting plate on the locking block cooperates with the limiting groove to improve the connection between the locking block and the slot. The rotating disk can drive one of the rotating rods, causing it to rotate and engage the two locking blocks in the slots. This allows for vertical adjustment of the rubber plug's installation position, improving the quality of cementing.

[0017] 2. When adjusting the rubber stopper body up and down, the threaded sleeve rotates on the cement head body and is threadedly connected to another rotating rod, which can drive it to move up and down. The other rotating rod can drive the lower pressure plate and one of the rotating rods to move together, thus controlling the installation position of the rubber stopper. The handle on the threaded sleeve is convenient to drive, which can quickly install the rubber stopper and improve the installation accuracy of the rubber stopper. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a perspective view of the main structure of a cement head plug device according to the present invention;

[0020] Figure 2 This is a half-sectional view of the placement mechanism structure in a cement head plug device of this utility model;

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This is a partial view of the placement mechanism in a cement head plug device according to the present invention.

[0023] The labels in the diagram represent:

[0024] 1. Cement head body; 2. Rubber stopper body; 3. Placement mechanism; 301. Rotating rod; 302. Locking block; 303. Locking groove; 304. Lower pressure plate; 305. Sliding block; 306. Sliding groove; 307. Threaded sleeve; 308. Handle; 309. Limiting block; 310. Limiting groove; 311. Rotating disc. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] The present invention will be further described below with reference to the embodiments.

[0027] In some embodiments, please refer to the appendix to the instruction manual. Figure 1-4A cement head plug device includes a cement head body 1, a plug body 2 disposed on the inner wall of the cement head body 1, and a placement mechanism 3 disposed on the inner wall of the cement head body 1. Two rotating rods 301 are rotatably connected to the inner top wall of the cement head body 1. One rotating rod 301 is rotatably connected to the inner wall of the other rotating rod 301. One end of one rotating rod 301 passes through the other rotating rod 301 and is fixedly connected to two locking blocks 302. The top of the plug body 2 is provided with a locking groove 303 that fits into the locking blocks 302.

[0028] When in use, the cement head body 1 is connected to the casing inside the cementing well and to the surface manifold. The rubber plug body 2 is installed inside the cement head body 1. When the rubber plug body 2 is placed inside the cement head body 1, one of the rotating rods 301 aligns the two locking blocks 302 with the locking slots 303. As the other rotating rod 301 moves, one of the rotating rods 301 drives the two locking blocks 302 to insert into the locking slots 303. As one of the rotating rods 301 rotates, the locking blocks 302 engage in the locking slots 303, which facilitates the up and down movement of the rubber plug body 2 and allows control over the installation position of the rubber plug body 2.

[0029] In some embodiments, such as Figure 2 Figure 3 and Figure 4 As shown, in a preferred embodiment of the present invention, the placement mechanism 3 includes a lower pressure plate 304 slidably connected to the inner wall of the cement head body 1. Two sliders 305 are fixedly connected to the outer wall of the lower pressure plate 304. Two grooves 306 that fit into the sliders 305 are opened on both sides of the inner wall of the cement head body 1. The top of the lower pressure plate 304 is fixedly connected to another rotating rod 301.

[0030] Another rotating rod 301 is threadedly connected to the threaded sleeve 307, which drives the lower pressure plate 304 to move downward. The lower pressure plate 304 slides down along the inner wall of the slide groove 306 through the sliders 305 on both sides and squeezes the rubber stopper body 2, thereby adjusting the position of the rubber stopper body 2. The two sliders 305 and the two slide grooves 306 cooperate to limit and guide the lower pressure plate 304 and the other rotating rod 301, thereby adjusting the position of the rubber stopper body 2 and improving the installation effect of the rubber stopper body 2.

[0031] In this embodiment of the utility model, a threaded sleeve 307 is rotatably connected to the top of the cement head body 1, and the threaded sleeve 307 is threadedly connected to another rotating rod 301.

[0032] Manually rotating the threaded sleeve 307, which is threadedly connected to another rotating rod 301, can drive the other rotating rod 301 to move up and down. The other rotating rod 301 drives the lower pressure plate 304, one of the rotating rods 301, and two locking blocks 302 to move together, pressing and installing the rubber stopper body 2, which facilitates the placement and installation of the rubber stopper body 2.

[0033] In this embodiment of the utility model, a handle 308 is fixedly connected to the outer wall of the threaded sleeve 307.

[0034] When driving the threaded sleeve 307, the threaded sleeve 307 is rotated by manually turning the handle 308, so that the threaded sleeve 307 is threadedly connected to another rotating rod 301, which can improve the use effect of the device.

[0035] In this embodiment of the utility model, a limiting block 309 is fixedly installed on the top of the inner wall of the card block 302, and the limiting block 309 is disposed on the inner wall of the card slot 303.

[0036] When the locking block 302 is engaged in the slot 303, the limiting block 309 at the top of the locking block 302 contacts the slot 303, thereby improving the connection stability between the locking block 302 and the slot 303 and facilitating the adjustment of the installation position of the rubber stopper body 2.

[0037] In this embodiment of the utility model, the top of the limiting block 309 is provided with several evenly distributed limiting grooves 310.

[0038] When the limiting block 309 in the card block 302 comes into contact with the inner wall of the card slot 303, the limiting groove 310 at the top of the limiting block 309 can further improve the stability between the card block 302 and the card slot 303, and improve the use effect of the device.

[0039] In this embodiment of the utility model, one end of one rotating rod 301 away from the lower pressure plate 304 passes through another rotating rod 301 and is fixedly connected to a rotating disk 311.

[0040] When the locking block 302 is engaged in the slot 303, the locking block 302 and the slot 303 are aligned. As the other rotating rod 301 rotates, it drives one of the rotating rods 301 and the two locking blocks 302 to move downward and insert into the slot 303. Manually rotating the rotating disk 311 drives the two locking blocks 302 at the bottom of one of the rotating rods 301 to rotate in the slot 303, so that they engage with each other. This allows the installation position of the rubber stopper body 2 to be adjusted.

[0041] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A cement head plug device, comprising a cement head body (1), wherein a plug body (2) is disposed on the inner wall of the cement head body (1), characterized in that: The placement mechanism (3) is located on the inner wall of the cement head body (1). The inner top wall of the cement head body (1) is rotatably connected to two rotating rods (301). One of the rotating rods (301) is rotatably connected to the inner wall of the other rotating rod (301). One end of one of the rotating rods (301) passes through the other rotating rod (301) and is fixedly connected to two locking blocks (302). The top of the rubber stopper body (2) is provided with a locking groove (303) that fits into the locking block (302).

2. The cement head plug device according to claim 1, characterized in that, The placement mechanism (3) includes a lower pressure plate (304) slidably connected to the inner wall of the cement head body (1). Two sliders (305) are fixedly connected to the outer wall of the lower pressure plate (304). Two grooves (306) that fit into the sliders (305) are opened on both sides of the inner wall of the cement head body (1). The top of the lower pressure plate (304) is fixedly connected to another rotating rod (301).

3. The cement head plug device according to claim 1, characterized in that, The top of the cement head body (1) is rotatably connected to a threaded sleeve (307), which is threadedly connected to another rotating rod (301).

4. The cement head plug device according to claim 3, characterized in that, The outer wall of the threaded sleeve (307) is fixedly connected to a handle (308).

5. The cement head plug device according to claim 1, characterized in that, A limiting block (309) is fixedly installed on the top of the inner wall of the card block (302), and the limiting block (309) is disposed on the inner wall of the card slot (303).

6. The cement head plug device according to claim 5, characterized in that, The top of the limiting block (309) has several evenly distributed limiting grooves (310).

7. The cement head plug device according to claim 1, characterized in that, One end of one of the rotating rods (301) away from the lower pressure plate (304) passes through the other rotating rod (301) and is fixedly connected to a rotating disk (311).

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