Float collar float shoe device with good sealing performance

Abstract

The utility model relates to the technical field of float collar and float shoe devices, in particular to a float collar and float shoe device with good sealing performance, which comprises a pipeline, a float collar and a float shoe, the anti-loosening mechanism comprises two mounting blocks arranged on the surface of the sealing component, the surfaces of the mounting blocks are connected to the upper end of the inner wall of the pipeline in a sliding mode, and the upper end of the surface of the pipeline is connected with a positioning block in a sliding mode; according to the device, the sealing component is stably mounted in the pipeline through the positioning block, the mounting block, the fixing block and the bolt, the top end of the bolt is shielded and limited through the limiting block, the bolt is prevented from being separated from the fixing block, and compared with an existing spring assembly which is prone to displacement after being impacted by mud, the sealing component is not prone to damage. After mud in the pipeline impacts the sealing component, the bolt cannot loosen and be separated from the positioning block, it is guaranteed that the sealing component is stably installed in the pipeline, and then the sealing performance of the float collar float shoe pipeline is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of floating collar and floating shoe devices, in particular to a floating collar and floating shoe device with good sealing performance. Background Art

[0002] A float collar and shoe assembly is a crucial component of oil drilling equipment. A buoyant casing guide shoe or coupling, it is primarily used to guide the casing string smoothly into the well and adjust the buoyancy applied to the casing string during lowering. During cementing, the float collar and shoe assembly accurately controls the height of the cement plug within the casing, preventing mud from flowing back into the casing and ensuring cementing quality.

[0003] After searching, the Chinese patent "A floating hoop and floating shoe with high sealing performance" authorization announcement number "CN216841556U" is found. By pressing and rotating the support frame, the support frame is pressed into the inside of the locking groove. Through the action of the spring assembly, the support frame is directly fixed inside the locking groove, and the installation and disassembly are simple.

[0004] In the above application, the mud flowing in the float collar and float shoe pipeline will generate impact force on the support frame and the spring assembly. Since the spring assembly is elastic and the support frame rotates and presses in the locking groove, it is easy to cause the support frame to be impacted and displaced in the locking groove, thereby affecting the sealing of the float collar and float shoe pipeline.

[0005] Therefore, a floating collar and floating shoe device with good sealing performance is proposed to solve the above problems. Utility Model Content

[0006] The purpose of the present invention is to provide a floating collar and floating shoe device with good sealing performance in order to solve the above problems, thereby improving the problem that the support frame and the spring assembly are not stable when installed on the floating collar and floating shoe pipeline.

[0007] The utility model achieves the above-mentioned object through the following technical solutions: a floating collar and floating shoe device with good sealing performance, comprising: a pipeline, a sealing component provided inside the pipeline; an anti-loosening mechanism, the anti-loosening mechanism comprising two mounting blocks provided on the surface of the sealing component, the surface of the mounting block being slidably connected to the upper end of the inner wall of the pipeline, a positioning block being slidably connected to the upper end of the surface of the pipeline, the surface of the positioning block being clamped to the lower end of the surface of the mounting block, the upper end of the surface of the pipeline being fixedly connected to a fixing block, the inner wall of the fixing block being threadedly connected to a bolt, the surface of the bolt being threadedly connected to the inner wall of the positioning block, and the inner wall of the fixing block being slidably connected to a limiting block. Through the positioning block, the mounting block, the fixing block and the bolt, the sealing component is stably installed in the pipeline, and through the limiting block, the top of the bolt is blocked and limited to prevent the bolt from escaping from the fixing block, thereby ensuring the stable installation of the sealing component in the pipeline and further ensuring the sealing performance of the floating collar and floating shoe pipeline.

[0008] Preferably, the sealing member comprises a hollow block fixedly connected to the lower end of the mounting block surface, a ball rod slidably connected to the inner wall of the hollow block, a screw fixedly connected to the bottom end of the ball rod, a ball valve threadedly connected to the surface of the screw, and a spring fixedly connected to the opposite end of the ball valve and the hollow block. The screw allows the ball rod and the ball valve to be separated, thereby separating the ball rod, the ball valve, and the hollow block from each other, thereby reducing the cost of replacing the sealing member.

[0009] Preferably, one side of the limit block is fixedly connected to a spring plate, and the other end of the spring plate is fixedly connected to the inner wall of the fixed block. Through the spring plate, the limit block is always subjected to thrust, ensuring that the limit block stably blocks the bolt.

[0010] Preferably, the surface of the bolt is rotatably connected to a limit bracket, and the surface of the limit bracket is slidably connected to the inner wall of the fixing block and the positioning block in turn. The limit bracket is used to limit the upward movement of the bolt and prevent the bolt from escaping from the fixing block.

[0011] Preferably, the inner wall of the fixing block is fixedly connected with an annularly distributed resistance pad. The resistance pad and the limit frame increase the resistance to the bolt moving upward, ensuring that the bolt is stably installed in the fixing block and the positioning block.

[0012] Preferably, a pull rope is fixedly connected to one side of the limiting block, and the other end of the pull rope passes through and extends out of the inner wall of the fixing block.

[0013] Preferably, two limiting rods are fixedly connected to the upper end of the surface of the pipe. The limiting rods limit the position of the circular movement of the positioning block, ensuring that the bolt can be accurately threaded in the positioning block.

[0014] The beneficial effects of the utility model are:

[0015] The sealing component is stably installed in the pipeline through the positioning block, installation block, fixing block and bolts. The limit block blocks the top of the bolt to prevent the bolt from being separated from the fixing block. Compared with the existing spring assembly, which is easily displaced after being impacted by mud, the bolt will not loosen and fall out of the positioning block after the mud in the pipeline of this method impacts the sealing component, ensuring that the sealing component is stably installed in the pipeline, thereby ensuring the sealing of the floating collar and floating shoe pipeline.

[0016] The spring piece ensures that the limit block is always subjected to thrust, ensuring that the limit block stably blocks the bolt. The resistance to the bolt's upward movement is increased by the blocking pad and the limit frame, ensuring that the bolt is stably installed in the fixing block and the positioning block. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 This is a cross-sectional view of the pipeline of the present utility model;

[0019] Figure 3 This is a schematic structural diagram of the sealing component and anti-loosening mechanism of the utility model;

[0020] Figure 4 for Figure 3 A magnified view of center.

[0021] In the figure: 1. Pipe; 2. Sealing component; 21. Hollow block; 22. Ball rod; 23. Ball valve; 24. Spring; 25. Screw; 3. Anti-loosening mechanism; 31. Mounting block; 32. Positioning block; 33. Fixing block; 34. Bolt; 35. Limit block; 36. Shrapnel; 37. Limit frame; 38. Stop pad; 39. Pull rope; 310. Limit rod. DETAILED DESCRIPTION

[0022] 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.

[0023] When implementing: Figure 1-4 As shown, a floating collar and floating shoe device with good sealing performance includes: a pipeline 1, a sealing component 2 is provided inside the pipeline 1; an anti-loosening mechanism 3, the anti-loosening mechanism 3 includes two mounting blocks 31 provided on the surface of the sealing component 2, the surface of the mounting block 31 is slidably connected to the upper end of the inner wall of the pipeline 1, the upper end of the surface of the pipeline 1 is slidably connected to a positioning block 32, the surface of the positioning block 32 is clamped to the lower end of the surface of the mounting block 31, the upper end of the surface of the pipeline 1 is fixedly connected to a fixing block 33, the inner wall of the fixing block 33 is threadedly connected to a bolt 34, the surface of the bolt 34 is threadedly connected to the inner wall of the positioning block 32, and the inner wall of the fixing block 33 is slidably connected to a limiting block 35.

[0024] Slide the mounting block 31 into the pipe 1 so that the sealing component 2 to be used is installed in the pipe 1. At this time, push the positioning block 32 so that the positioning block 32 is snapped into the mounting block 31. Use a screwdriver to align the bolt 34 on the fixing block 33 and rotate it so that the bolt 34 moves downward during the rotation in the fixing block 33, and then the bolt 34 is threaded on the inner wall of the positioning block 32, thereby fixing the sealing component 2 in the pipe 1.

[0025] like Figure 2As shown, sealing member 2 includes a hollow block 21 fixedly connected to the lower end of the surface of mounting block 31. A ball rod 22 is slidably connected to the inner wall of hollow block 21. A screw 25 is fixedly connected to the bottom end of ball rod 22. A ball valve 23 is threadedly connected to the surface of screw 25. A spring 24 is fixedly connected to the opposite end of ball valve 23 and hollow block 21. Pipeline 1 and sealing member 2 form a floating collar and floating shoe device.

[0026] The pipe 1 is threadedly connected to the corresponding casing. When the mud enters the pipe 1, the pressure of the mud pushes the ball valve 23 and the ball rod 22 to move. The ball valve 23 moves to squeeze the spring 24 and open the inner wall of the pipe 1. The mud is transported to the well wall through the hollow block 21 and the corresponding casing.

[0027] When the pressure in the well wall causes the mud to flow back, the mud pushes the ball valve 23 and the ball rod 22 to move and under the elastic force of the spring 24, the ball valve 23 is clamped to the corresponding position of the inner wall of the pipeline 1, thereby sealing the inner wall of the pipeline 1, preventing the mud from flowing back under the influence of pressure and affecting the sealing of the pipeline 1.

[0028] like Figure 4 As shown, a spring clip 36 is fixedly connected to one side of the limit block 35, the other end of which is fixedly connected to the inner wall of the fixed block 33. A pull rope 39 is fixedly connected to one side of the limit block 35, the other end of which passes through and extends out of the inner wall of the fixed block 33. The surface of the bolt 34 is rotatably connected to a limit bracket 37, and the surface of the limit bracket 37 is sequentially slidably connected to the inner walls of the fixed block 33 and the positioning block 32. The inner wall of the fixed block 33 is fixedly connected to an annularly distributed resistance pad 38. The resistance pad 38 is a rubber component.

[0029] When the sealing component 2 in the pipe 1 needs to be replaced, pull the pull rope 39 to move the limit block 35 away from the top of the bolt 34, use a screwdriver to move the bolt 34 away from the positioning block 32, push the positioning block 32 to move the positioning block 32 away from the mounting block 31, pull the ball rod 22 or the hollow block 21 to separate the mounting block 31 from the inner wall of the pipe 1, then rotate the ball valve 23 to separate the ball valve 23 from the screw 25, and then the parts on the sealing component 2 can be replaced.

[0030] like Figure 2 As shown, two limiting rods 310 are fixedly connected to the upper end of the surface of the pipe 1.

[0031] The cam 35 is pressed against the stopper 38 to release the stopper 37, and the stopper 38 is pressed against the stopper 38, and the stopper 38 is pressed against the stopper 38 to release the stopper 37. The stopper 38 is pressed against the stopper 38 to release the stopper 37, and the stopper 38 is pressed against the stopper 38 to release the stopper 37.

[0032] It should be noted that the pipe 1, ball rod 22, ball valve 23, spring 24, spring 36 and bolt 34 in the above description are all relatively mature devices in existing technology. The specific models can be selected according to actual needs and will not be described in detail here.

[0033] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A floating collar and floating shoe device with good sealing performance, characterized in that: include: A pipeline (1), wherein a sealing component (2) is provided inside the pipeline (1); An anti-loosening mechanism (3) includes two mounting blocks (31) provided on the surface of the sealing component (2), the surface of the mounting block (31) being slidably connected to the upper end of the inner wall of the pipe (1), the upper end of the surface of the pipe (1) being slidably connected to a positioning block (32), the surface of the positioning block (32) being clamped to the lower end of the surface of the mounting block (31), the upper end of the surface of the pipe (1) being fixedly connected to a fixing block (33), the inner wall of the fixing block (33) being threadedly connected to a bolt (34), the surface of the bolt (34) being threadedly connected to the inner wall of the positioning block (32), and the inner wall of the fixing block (33) being slidably connected to a limiting block (35).

2. A floating collar and floating shoe device with good sealing performance according to claim 1, characterized in that: The sealing member (2) comprises a hollow block (21) fixedly connected to the lower end of the surface of the mounting block (31); the inner wall of the hollow block (21) is slidably connected to a ball rod (22); the bottom end of the ball rod (22) is fixedly connected to a screw rod (25); the surface of the screw rod (25) is threadedly connected to a ball valve (23); and the ball valve (23) is fixedly connected to the opposite end of the hollow block (21) with a spring (24).

3. The floating collar and floating shoe device with good sealing performance according to claim 1, characterized in that: One side of the limiting block (35) is fixedly connected to a spring piece (36), and the other end of the spring piece (36) is fixedly connected to the inner wall of the fixing block (33).

4. The floating collar and floating shoe device with good sealing performance according to claim 1, characterized in that: The surface of the bolt (34) is rotatably connected to the limiting frame (37), and the surface of the limiting frame (37) is slidably connected to the inner walls of the fixing block (33) and the positioning block (32) in sequence.

5. The floating collar and floating shoe device with good sealing performance according to claim 1, characterized in that: An inner wall of the fixed block (33) is fixedly connected with an annularly distributed resistance pad (38).

6. The floating collar and floating shoe device with good sealing performance according to claim 1, characterized in that: A pull rope (39) is fixedly connected to one side of the limit block (35), and the other end of the pull rope (39) passes through and extends out of the inner wall of the fixed block (33).

7. The floating collar and floating shoe device with good sealing performance according to claim 1, characterized in that: Two limiting rods (310) are fixedly connected to the upper end of the surface of the pipe (1).

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