CN218759812U

CN218759812U - Casing floating shoe device for well cementation

Info

Publication number: CN218759812U
Application number: CN202222750905.3U
Authority: CN
Inventors: 邓宝宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-03-28
Anticipated expiration: 2032-10-19

Abstract

The utility model discloses a casing floating shoe device for well cementation, which relates to the technical field of floating shoe devices and comprises a pipe body, wherein the end part of the pipe body is fixedly connected with a floating shoe guide cap, the inner side surface of the upper part of the pipe body is fixedly connected with a connecting plate, the top surface of the connecting plate is communicated with a drainage groove, and the inner side surface of the lower part of the pipe body is fixedly connected with a fixed plate; the utility model discloses the position of mounting panel can obtain spacingly under sealing sleeve's effect, and both cooperate the use can prevent that the material from entering into in the middle of club and supporting spring, avoid causing the pollution to it, the protective sleeve section of thick bamboo can prevent that the bottom of club from receiving and be infected with, it can normally reset to have guaranteed, the security of device has been increased, the closing plate can be with drainage hole shutoff under sealing mechanism's effect, and go on with the shutoff of drainage groove is unanimous, double seal's effect has been played to the body, the condition of having avoided the material to leak appears, the practicality of device has been increased, simultaneously can effectually prevent mud and flow backward.

Description

Casing floating shoe device for well cementation

Technical Field

The utility model relates to a float shoe technical field especially relates to a sleeve pipe float shoe device for well cementation.

Background

The float shoe or float collar can be used for replacing guide shoe, casing shoe and others, and can be used for general technical casing and oil layer casing, deep well, ultradeep well and special process well, and is connected with tail end of casing string to play the role of guide shoe and back pressure valve, and the float collar is connected with 20-30 m place from tail end of casing string to play the role of bearing ring and back pressure valve;

patent document CN203022684U discloses a casing float shoe device for well cementation, the right item of protection "includes float shoe casing (1), valve seat (3), case (4), coupling (5), float shoe casing (1), valve seat (3), case (4), coupling (5) are outer circular structure, float shoe casing (1) diameter is little, coupling (5) diameter is big, float shoe casing (1) is located in the cask of coupling (5), there is hemisphere float hoop casing upper cover (11) float shoe casing (1) upper end, trompil (12) in the middle of hemisphere float hoop casing upper cover (11). The special tool for well cementation has reliable sealing performance and wide application range, is suitable for the well drilling and well cementation process of ultra-deep wells, inclined wells and horizontal wells, is a special tool for well cementation, is connected between casing connecting buckles, and closes a passage in a casing by the float collar and the float shoe valve core. But the cement paste has adherence phenomenon after the cement paste is poured to the bottom of the well, the centering degree of a bottom sleeve after well cementation is not good, and the sealing effect on the back flow of mud is not good;

therefore, it is necessary to design a casing float shoe device for well cementation to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a casing floating shoe device for well cementation.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a well cementation is with sleeve pipe float shoe device, includes the body, the tip fixedly connected with float shoe guide cap of body, the upper portion medial surface fixedly connected with connecting plate of body, the top surface of connecting plate link up and has seted up the drainage groove, the lower part medial surface fixedly connected with fixed plate of body, the top surface through connection of fixed plate has the club, just the club with link up a sliding connection, the top fixedly connected with mounting panel of club, the top surface of mounting panel is provided with sealed bulb, the surface cover that the club is located between fixed plate and the mounting panel opposite flank is equipped with supporting spring, the inside sealing mechanism that all is provided with in both sides of fixed plate.

Preferably, sealing mechanism includes the discharge orifice, the discharge orifice link up the top surface of seting up at the fixed plate, the seal groove has been seted up to the medial surface of discharge orifice, the medial surface sliding connection of fixed plate has the closing plate, the side of closing plate articulates there is the transfer line, the tip that the closing plate was kept away from to the transfer line articulates the surface at the club.

Preferably, the inner side surface of the sealing groove is attached to the end of the sealing plate, and the bottom surface of the fixing plate is fixedly connected with a protective sleeve corresponding to the ball rod.

Preferably, the bottom surface of the connecting plate is provided with a ball head groove corresponding to the sealing ball head, and the ball head groove is communicated with the drainage groove.

Preferably, the top surface of the fixing plate, which is located at the outer side of the ball rod, is fixedly connected with a sealing sleeve, and the top surface of the sealing sleeve is provided with a clamping groove corresponding to the mounting plate.

Preferably, a through hole is formed in the outer surface of the float shoe guide cap in a penetrating manner, and a connecting thread is arranged on the inner side face of the end part of the pipe body.

The utility model discloses following beneficial effect has:

1. by arranging the sealing sleeve and the protecting sleeve, the position of the mounting plate can be limited under the action of the sealing sleeve, and the sealing sleeve and the protecting sleeve are matched for use, so that materials can be prevented from entering the ball rod and the supporting spring, the ball rod and the supporting spring are prevented from being polluted, the protecting sleeve can prevent the bottom end of the ball rod from being polluted, the ball rod can be normally reset, and the safety of the device is improved;

2. through setting up fixed plate and sealing mechanism, the closing plate can be with the shutoff of discharge orifice under sealing mechanism's effect, and unanimous going on with the shutoff of drainage groove, has played double seal's effect to the body, has avoided the condition of material leakage to appear, has increased the practicality of device, can effectually prevent mud backward flow simultaneously.

Drawings

FIG. 1 is a schematic structural view of a main body of a casing float shoe device for well cementing according to the present invention;

FIG. 2 is a schematic front sectional view of a main body of the casing float shoe device for well cementing provided by the present invention;

fig. 3 is a schematic structural diagram of a part a of fig. 2 of the casing floating shoe device for well cementation according to the present invention;

in the figure: the device comprises a pipe body 1, a floating shoe guide cap 2, a connecting plate 3, a drainage groove 4, a fixing plate 5, a ball rod 6, a mounting plate 7, a support spring 8, a sealing mechanism 9, a drainage hole 91, a sealing groove 92, a sealing plate 93, a transmission rod 94, a sealing ball head 10, a sealing sleeve 11, a protective sleeve 12, a through hole 13 and a connecting thread 14.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a casing float shoe device for well cementation, comprising a tube body 1, a float shoe guide cap 2 fixedly connected to an end of the tube body 1, a connecting plate 3 fixedly connected to an upper inner side of the tube body 1, a drainage groove 4 formed through a top surface of the connecting plate 3, a fixing plate 5 fixedly connected to a lower inner side of the tube body 1, a ball bar 6 slidably connected to a top surface of the fixing plate 5, a mounting plate 7 fixedly connected to a top end of the ball bar 6, a sealing ball 10 provided on a top surface of the mounting plate 7, a support spring 8 fitted on an outer surface of the ball bar 6 between opposite sides of the fixing plate 5 and the mounting plate 7, a protective sleeve 12 corresponding to the ball bar 6 fixedly connected to a bottom surface of the fixing plate 5, a sealing mechanism 9 provided inside both sides of the fixing plate 5, the sealing mechanism 9 including a drainage hole 91 opened through a top surface of the fixing plate 5, an inner side surface 92 provided on the drainage hole 91, a sealing plate 93 slidably connected to the inner side surface of the fixing plate 5, a sealing plate 93 fitted to an end of the sealing plate 92, a driving rod 94 hinged to an end of the sealing plate 94, an end of the sealing plate 93 hinged to an end of the sealing plate 93, and capable of preventing leakage of the sealing plate from being sealed ball bar 5, and preventing the sealing groove from being sealed by the ball bar 4, and sealing plate, and preventing the sealing plate from being sealed by the drainage hole 4, and the sealing plate, and preventing the sealing mechanism, and preventing the sealing sleeve from being sealed ball from leakage of the ball bar 6, and the sealing plate, and preventing the sealing plate 3, and preventing the sealing plate from being sealed ball from being sealed by the drainage hole, and the sealing plate, and preventing the sealing plate from being sealed ball from being sealed by the sealing plate 4, the corresponding draw-in groove with mounting panel 7 has been seted up to sealing sleeve 11's top surface, the surface of float shoe guide cap 2 link up and has been seted up through mouthful 13, the tip medial surface of body 1 is provided with connecting thread 14, the position of mounting panel 7 can be spacing under sealing sleeve 11's effect, and both cooperation use can prevent that the material from entering into in the middle of club 6 and supporting spring 8, avoid causing the pollution to it, protective sleeve 12 can prevent that the bottom of club 6 from receiving being infected with, guaranteed that it can be normal reset, the security of device has been increased.

The utility model discloses a concrete theory of operation as follows:

when the sleeve floating shoe device is used, firstly, the pipe body 1 and the sleeve are connected through the connecting threads 14 of the inner side faces and are placed in a well, when concrete is injected into the well, the sealing ball head 10 and the ball rod 6 slide along the fixing plate 5 under the action of the concrete pressure, and the mounting plate 7 can be attached to the clamping groove in the top face of the sealing sleeve 11, so that the ball rod 6 and the supporting spring 8 are protected, the bottom end of the ball rod 6 enters the inner side face of the protecting sleeve 12, the concrete can enter the pipe body 1 along the drainage groove 4, the sealing plate 93 can be driven to slide through the transmission rod 94 in the downward moving process of the ball rod 6, the drainage hole 91 is leaked, the concrete can conveniently flow into the well through the fixing plate 5 and along the through hole 13, after the concrete is injected, the ball rod 6 and the mounting plate 7 slide upwards under the action of the supporting spring 8 and enter the ball head groove in the bottom face of the connecting plate 3, the pipe body 1 is sealed, the drainage hole 91 is sealed by the sealing plate 93 under the action of the transmission rod 94, and the leakage situation is prevented from occurring.

The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a well cementation is with sleeve pipe float shoe device, includes body (1), its characterized in that, the tip fixedly connected with float shoe guide cap (2) of body (1), upper portion medial surface fixedly connected with connecting plate (3) of body (1), drainage groove (4) have been seted up in the top surface link up of connecting plate (3), the lower part medial surface fixedly connected with fixed plate (5) of body (1), the top surface through connection of fixed plate (5) has club (6), just club (6) with link up a sliding connection, the top fixedly connected with mounting panel (7) of club (6), the top surface of mounting panel (7) is provided with sealed bulb (10), the surface cover that club (6) are located between fixed plate (5) and mounting panel (7) opposite flank is equipped with supporting spring (8), the inside sealing mechanism (9) that all is provided with in both sides of fixed plate (5).

2. The casing float shoe device for well cementation according to claim 1, characterized in that the sealing mechanism (9) comprises a drainage hole (91), the drainage hole (91) is arranged on the top surface of the fixing plate (5) in a penetrating manner, a sealing groove (92) is arranged on the inner side surface of the drainage hole (91), a sealing plate (93) is connected to the inner side surface of the fixing plate (5) in a sliding manner, a transmission rod (94) is hinged to the side surface of the sealing plate (93), and the end of the transmission rod (94) far away from the sealing plate (93) is hinged to the outer surface of the ball rod (6).

3. The casing float shoe device for well cementation according to claim 2, wherein the inner side surface of the sealing groove (92) is attached to the end of the sealing plate (93), and the bottom surface of the fixing plate (5) is fixedly connected with a protective sleeve (12) corresponding to the ball rod (6).

4. The casing float shoe device for well cementation according to claim 1, characterized in that the bottom surface of the connecting plate (3) is provided with a ball head groove corresponding to the sealing ball head (10), and the ball head groove is communicated with the drainage groove (4).

5. The casing float shoe device for well cementation according to claim 1, characterized in that a sealing sleeve (11) is fixedly connected to the top surface of the fixing plate (5) located outside the ball bar (6), and a clamping groove corresponding to the mounting plate (7) is formed in the top surface of the sealing sleeve (11).

6. The casing float shoe device for well cementation according to claim 1, wherein a through hole (13) is formed through an outer surface of the float shoe guide cap (2), and a connection thread (14) is provided on an inner surface of an end portion of the pipe body (1).