Casing cement float collar float shoe

Abstract

The utility model belongs to the casing cement float collar float shoe technical field, and disclose a kind of casing cement float collar float shoe, including the upper end surface of casing float collar body is equipped with the float shoe device fixedly, the upper end surface of float shoe device is equipped with nickel-titanium alloy column framework fixedly, the inside of nickel-titanium alloy column framework is equipped with honeycomb deformable framework fixedly, the inside of honeycomb deformable framework is equipped with memory polymer fixedly, by nickel-titanium alloy column framework, honeycomb deformable framework and memory polymer, utilize nickel-titanium alloy telescopic characteristic and make float shoe adapt to different working conditions, honeycomb deformable framework enhances structural stability and adaptability, memory polymer outer layer accurate recovery shape plays the protection and sealing effect, guarantee well cementing quality.

Description

Technical Field

[0001] This utility model belongs to the technical field of casing cement float hoop float shoe, specifically a casing cement float hoop float shoe. Background Technology

[0002] Different well conditions have different performance requirements for float rings and float shoes. Existing products often cannot meet the needs of multiple working conditions. Different types of float rings and float shoes need to be selected according to specific well conditions, which increases the operating cost and complexity. Under complex well conditions, the sealing structure of traditional float rings and float shoes cannot guarantee long-term effective sealing, which can easily lead to cement slurry leakage and affect cementing quality.

[0003] Meanwhile, a drillable casing cement float hoop float shoe with announcement number CN216841557U is disclosed, including a float hoop float shoe shell, a connecting block and a second electromagnet. The top of the float hoop float shoe shell is provided with a guide cap, and a partition is provided inside the float hoop float shoe shell. The partition has a through hole. The connecting block is located in the middle of the partition and has a cavity inside. A sliding component is provided in the cavity. The second electromagnet is located above the sliding component, and the bottom of the sliding component is connected to a sealing block. The sealing block is installed and connected to the guide component through a connecting plate.

[0004] The aforementioned type of drillable casing cement float hoop and float shoe can only be improved to make the casing cement float hoop and float shoe move more stably and quickly, making the float hoop and float shoe more stable, but it cannot make the float shoe adaptable to different working conditions during use.

[0005] Therefore, a casing cement float hoop float shoe is proposed to address the above problems. Utility Model Content

[0006] To address the problems mentioned in the background art, this utility model provides a casing cement float hoop float shoe, which has the advantages of utilizing the expansion and contraction characteristics of nickel-titanium alloy to adapt the float shoe to different working conditions, honeycomb deformable skeleton to enhance structural stability and adaptability, and shape memory polymer outer layer to accurately restore shape to play a protective and sealing role, thus ensuring cementing quality.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a casing cement float hoop float shoe, comprising a float shoe device fixedly provided on the upper end face of the casing float hoop body, a nickel-titanium alloy column skeleton fixedly provided on the upper end face of the float shoe device, a honeycomb deformable skeleton fixedly provided inside the nickel-titanium alloy column skeleton, and a memory polymer fixedly provided inside the honeycomb deformable skeleton.

[0008] Preferably, the upper end face of the nickel-titanium alloy column frame is fixedly provided with a floating shoe guide groove, the outer side of the floating shoe device is fixedly provided with a rubber ring-shaped sealing ring, the outer side of the rubber ring-shaped sealing ring is fixedly provided with a metal sealing column, the lower inner end of the metal sealing column is fixedly provided with a rubber conical ring-shaped sealing ring, and the rubber conical ring-shaped sealing ring is fixed to the outer side of the sleeve floating hoop body.

[0009] By adopting the above technical solution, the sealing and stability of the connection between the floating shoe device and the casing floating hoop body can be enhanced.

[0010] Preferably, a floral hoop is fixedly provided on the upper inner side of the sleeve float hoop body, and a ball rod is slidably provided in the middle of the upper end face of the floral hoop.

[0011] By adopting the above technical solution, it is easy to realize the sliding function of the cue stick within the hoop, providing a basis for the moving parts in subsequent operations.

[0012] Preferably, a spring is fixedly provided in the middle of the lower end face of the hoop, and the lower side of the spring is fixed on the upper side of the lower end of the cue stick.

[0013] By adopting the above technical solution, the elasticity of the spring can be used to provide a certain degree of support and cushioning for the cue stick.

[0014] Preferably, a flow-blocking plate is fixedly provided on the lower end face of the flower hoop, and an anti-blocking plate is fixedly provided on the lower end of the flow-blocking plate.

[0015] By adopting the above technical solution, the fluid can be impeded and blockages can be prevented, ensuring the normal flow of fluid inside the casing float collar.

[0016] Preferably, the upper outer side of the sleeve float clamp body is provided with a sleeve thread, the lower inner side of the float shoe device is provided with a float shoe thread, and the sleeve thread rotates inside the float shoe thread, and the lower inner side of the sleeve float clamp body is provided with a sleeve thread.

[0017] By adopting the above technical solution, the installation and disassembly of the casing float clamp body and the float shoe device are facilitated, and the two are effectively connected.

[0018] Preferably, a sealing ball is fixedly provided on the lower end face of the cue stick, and the sealing ball is attached to the middle of the upper side of the baffle plate.

[0019] By adopting the above technical solution, a sealing ball is provided on the lower end face of the cue stick and the sealing ball is attached to the middle of the upper side of the baffle plate, which can achieve the sealing function and prevent the fluid from flowing randomly in a specific position.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model utilizes the stretching and contraction properties of nickel-titanium alloy to make the float shoe adapt to different working conditions through a nickel-titanium alloy column skeleton, a honeycomb deformable skeleton, and a memory polymer. The honeycomb deformable skeleton enhances the structural stability and adaptability, and the outer layer of memory polymer accurately restores its shape to play a protective and sealing role, ensuring cementing quality. 2. This utility model uses rubber ring-shaped sealing rings, rubber conical ring-shaped sealing rings, and metal sealing columns to prevent cement slurry or drilling fluid from leaking from the connection point during cementing operations, avoid backflow of cement slurry, ensure the sealing effect and pressure bearing capacity of the float rings and float shoes, and thus ensure the smooth running of the casing string into the well. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the installation structure of the honeycomb deformable frame of this utility model; Figure 3 This is a schematic diagram of the installation structure of the floating shoe device of this utility model; Figure 4 This is a schematic diagram of the installation structure of the metal sealing column of this utility model.

[0022] In the diagram: 1. Casing float hoop body; 2. Float shoe device; 3. Nickel-titanium alloy column skeleton; 4. Metal sealing column; 5. Casing thread; 6. Honeycomb deformable skeleton; 7. Memory polymer; 8. Cue stick; 9. Flower hoop; 10. Spring; 11. Sealing ball; 12. Baffle plate; 13. Float shoe thread; 14. Rubber ring seal; 15. Rubber conical ring seal; 16. Anti-clogging plate; 17. Float shoe guide groove. Detailed Implementation

[0023] 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.

[0024] The following describes an embodiment of this utility model based on its overall structure.

[0025] like Figures 1 to 4 As shown, this utility model provides a casing cement float hoop float shoe, including a float shoe device 2 fixedly provided on the upper end face of the casing float hoop body 1, a nickel-titanium alloy column frame 3 fixedly provided in the middle of the float shoe device 2 to adapt to different working conditions, a honeycomb deformable frame 6 fixedly provided inside the nickel-titanium alloy column frame 3 to provide protection, and a memory polymer 7 fixedly provided inside the honeycomb deformable frame 6.

[0026] The upper end face of the nickel-titanium alloy column frame 3 is fixedly provided with a floating shoe guide groove 17. The outer side of the floating shoe device 2 is fixedly provided with a rubber ring-shaped sealing ring 14 for sealing. The outer side of the rubber ring-shaped sealing ring 14 is fixedly provided with a metal sealing column 4. The lower end of the inner side of the metal sealing column 4 is fixedly provided with a rubber conical ring-shaped sealing ring 15 for sealing. The rubber conical ring-shaped sealing ring 15 is fixed to the outer side of the sleeve floating hoop body 1.

[0027] A flower hoop 9 is fixedly provided on the upper side of the inner side of the sleeve floating hoop body 1. A ball rod 8 is slidably provided in the middle of the upper end face of the flower hoop 9 to prevent blockage.

[0028] A spring 10 is fixed in the middle of the lower end face of the hoop 9 to act as a buffer, and the lower side of the spring 10 is fixed on the upper side of the lower end of the cue stick 8.

[0029] A flow-blocking plate 12 is fixedly provided on the lower end face of the flower hoop 9, and an anti-blocking plate 16 is fixedly provided on the lower end of the flow-blocking plate 12 to achieve the anti-blocking effect.

[0030] The upper outer side of the sleeve float clamp body 1 is provided with a sleeve thread 5, and the lower inner side of the float shoe device 2 is provided with a float shoe thread 13. The sleeve thread 5 rotates inside the float shoe thread 13, and the sleeve thread 5 on the lower inner side of the sleeve float clamp body 1 serves as a connection.

[0031] A sealing ball 11 is fixedly provided on the lower end face of the cue stick 8 to achieve a sealing effect, and the sealing ball 11 is attached to the middle of the upper side of the baffle plate 12.

[0032] The working principle and process of a casing cement float hoop float shoe: The casing float collar body 1 has casing threads 5 on its upper outer side and lower inner side, and the float shoe device 2 has a float shoe thread 13 on its lower inner side. By rotating the casing thread 5 within the float shoe thread 13, the float shoe device 2 is fixed to the upper end face of the casing float collar body 1. Simultaneously, the casing float collar body 1 can also connect with other casings using its upper and lower casing threads 5, thus constructing a complete casing string system. The nickel-titanium alloy column skeleton 3 serves the following purpose: during installation, if encountering irregular well walls or conditions with resistance, the nickel-titanium alloy column skeleton 3, due to its good flexibility... It possesses strength and can withstand certain bending and compression without damage, ensuring the connection stability of the float shoe device 2 and the casing float collar body 1, adapting to different installation environments. The float shoe device 2 guides the casing into the well, and the float shoe guide groove 17 further ensures the accuracy of the casing's running direction. During the casing running process, various complex downhole conditions may be encountered, such as well wall friction and collisions. The role of the nickel-titanium alloy column skeleton 3: The honeycomb deformable skeleton 6 and memory polymer 7 inside the nickel-titanium alloy column skeleton 3 play an important role. When subjected to external impact, the honeycomb deformable skeleton 6 can deform under pressure. The deformable skeleton 6 can deform to buffer impact forces, and the shape memory polymer 7 can partially recover its shape after deformation. The shape memory effect and superelasticity of the nickel-titanium alloy itself allow it to adjust its shape according to different stress conditions, adapting to different downhole working conditions and protecting the casing and float shoe components from damage. The rubber ring-shaped seal 14 on the outside of the float shoe device 2 and the rubber conical ring-shaped seal 15 inside the metal sealing column 4 together form a double sealing structure. The rubber ring-shaped seal 14 initially prevents liquid leakage from the gap between the float shoe device 2 and the casing, and the rubber conical ring-shaped seal... The sealing ring 15 further enhances the sealing effect, ensuring that liquids such as cement slurry will not leak from the connection between the casing float collar body 1 and the float shoe device 2 during cementing operations. Under normal circumstances, the sealing ball 11 is attached to the middle of the upper side of the baffle plate 12, which plays a role in blocking the flow and preventing the backflow of cement slurry. When liquid flows from bottom to top, the liquid pressure overcomes the elastic force of the spring 10 and pushes the ball rod 8 to slide upward. The sealing ball 11 leaves the baffle plate 12, and the liquid can flow through the channel on the baffle plate 12. The anti-blocking plate 16 can prevent solid particles and other impurities from blocking the channel of the baffle plate 12.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A casing cement float hoop float shoe, comprising a casing float hoop body (1), characterized in that: The upper end face of the sleeve float hoop body (1) is fixedly provided with a floating shoe device (2), the upper end face of the floating shoe device (2) is fixedly provided with a nickel-titanium alloy column skeleton (3), the inside of the nickel-titanium alloy column skeleton (3) is fixedly provided with a honeycomb deformable skeleton (6), and the inside of the honeycomb deformable skeleton (6) is fixedly provided with a memory polymer (7).

2. The casing cement float hoop float shoe according to claim 1, characterized in that: The upper end face of the nickel-titanium alloy column frame (3) is fixedly provided with a floating shoe guide groove (17), the outer side of the floating shoe device (2) is fixedly provided with a rubber ring-shaped sealing ring (14), the outer side of the rubber ring-shaped sealing ring (14) is fixedly provided with a metal sealing column (4), the lower end of the inner side of the metal sealing column (4) is fixedly provided with a rubber conical ring-shaped sealing ring (15), and the rubber conical ring-shaped sealing ring (15) is fixed to the outer side of the sleeve floating hoop body (1).

3. The casing cement float hoop float shoe according to claim 1, characterized in that: The upper side of the inner side of the sleeve float hoop body (1) is fixedly provided with a flower hoop (9), and a ball rod (8) is slidably provided in the middle of the upper end face of the flower hoop (9).

4. The casing cement float hoop float shoe according to claim 3, characterized in that: A spring (10) is fixedly provided in the middle of the lower end face of the hoop (9), and the lower side of the spring (10) is fixed on the upper side of the lower end of the cue stick (8).

5. A casing cement float hoop float shoe according to claim 4, characterized in that: The lower end face of the flower hoop (9) is fixedly provided with a flow-blocking plate (12), and the lower end of the flow-blocking plate (12) is fixedly provided with an anti-blocking plate (16).

6. The casing cement float hoop float shoe according to claim 1, characterized in that: The upper outer side of the sleeve float body (1) is provided with a sleeve thread (5), the lower inner side of the float shoe device (2) is provided with a float shoe thread (13), and the sleeve thread (5) rotates inside the float shoe thread (13). The lower inner side of the sleeve float body (1) is provided with a sleeve thread (5).

7. A casing cement float hoop float shoe according to claim 3, characterized in that: The lower end face of the cue stick (8) is fixedly provided with a sealing ball (11), and the sealing ball (11) is attached to the middle of the upper side of the baffle plate (12).

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