CN219774102U

CN219774102U - High-pressure type float collar device

Info

Publication number: CN219774102U
Application number: CN202322375074.0U
Authority: CN
Inventors: 巩建; 石斌; 唐海涛; 刘伟; 王建伟
Original assignee: Shengli Oilfield Bohai Cementing Engineering Technology Co ltd
Current assignee: Shengli Oilfield Bohai Cementing Engineering Technology Co ltd
Priority date: 2023-09-01
Filing date: 2023-09-01
Publication date: 2023-09-29
Anticipated expiration: 2033-09-01

Abstract

The utility model discloses a high-pressure type float collar device, which relates to the technical field of float collars and comprises a float collar body and a sealing plug for drilling, wherein the sealing plug is elastically installed in an inner cavity of the float collar body, a sealing ring matched with the sealing plug is fixedly installed on the inner wall of the float collar body, and an adjusting component for adjusting the joint tightness between the sealing plug and the sealing ring is arranged in the inner cavity of the float collar body. Through adjusting part, rotate limit bolt alright let the braking ring slide from top to bottom along the axis direction of guide bar, to the accurate control of the compression volume of roof pressure spring, realize controlling the mobilizable distance of sealing plug, carry out accurate control to the flow of liquid mixture, prevent that the sealing plug from appearing damaging the condition when using, improved float collar body life.

Description

High-pressure type float collar device

Technical Field

The utility model relates to the technical field of floating hoops, in particular to a high-pressure floating hoop device.

Background

The float collar is a casing collar capable of generating buoyancy, has the function of back pressure valve, is usually connected at a position 20-30 m away from the tail end of the casing, plays the roles of a drag ring and a check valve, and is widely applied along with development of construction operations such as drilling, well cementation and the like, and the technical requirements are continuously improved.

According to chinese patent application No. 201920357881.0, a high temperature high pressure float collar relates to float collar technical field, this high temperature high pressure float collar, including the float collar barrel, the inside of float collar barrel is provided with the disk seat, and the one side of going up the disk seat is kept away from to the inside of float collar barrel is provided with down the disk seat, the feed inlet has been seted up to the inside of going up the disk seat, and goes up the outer wall of disk seat and has seted up first draw-in groove, the discharge opening has been seted up to the inside of disk seat down, and the disk seat is close to one side position department of going up the disk seat down and is provided with the spring.

According to the application document cited above, the valve plug can be continuously pressed against the spring to realize the effect of sealing the liquid inlet of the float collar body, meanwhile, the effect of the check valve is realized in the float collar body to prevent the liquid mixture from flowing back, but as the drilling depth of the float collar body is increased, the liquid mixture in the drilling well is increased to apply pressure to the valve plug, so that the spring is compressed continuously and the flow of the liquid mixture in the float collar body is increased continuously, the flow of the mixture is difficult to control by the valve plug in the float collar body, the valve plug is damaged, and the service life of the float collar body is reduced.

For this purpose, we propose a high pressure type float collar device.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provides a high-pressure type floating hoop device.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a high pressure type float collar device, includes float collar body and the sealing plug that is used for the well drilling, sealing plug elastic mounting is in the inner chamber of float collar body, the inner wall fixed mounting of float collar body have be used for with sealing plug looks adaptation sealing ring, and be provided with the adjusting part who is used for adjusting laminating compactness between sealing plug and the sealing ring in the inner chamber of float collar body.

The adjusting component comprises a braking ring and a cross-shaped guide frame, one end of the sealing plug, far away from the sealing ring, is fixedly provided with a guide rod, the cross-shaped guide frame is fixedly arranged in the inner cavity of the floating hoop body, the cross-shaped guide frame is positioned right above the sealing plug, the braking ring is sleeved outside the guide rod in a sliding manner, and the outer wall of the guide rod is fixedly sleeved with a jacking spring which is positioned between the braking ring and the sealing plug.

And a limit bolt is rotatably arranged at one end of the cross-shaped guide frame, which is far away from the sealing plug, and a threaded hole matched with the limit bolt is formed at the edge of one end of the brake ring.

Preferably, one end of the jacking spring is fixedly connected with the lower end face of the brake ring, and the other end of the jacking spring is fixedly connected with the outer wall of the guide rod.

Preferably, the cross-shaped guide frame is provided with a plurality of mounting holes in annular distribution at one end far away from the sealing plug, limiting bolts are rotatably arranged in inner cavities of the mounting holes, tensioning wheels are fixedly arranged at one end, far away from the braking ring, of the limiting bolts, and the tensioning wheels are rotatably connected through tensioning belts.

Preferably, the through hole with guide bar looks adaptation is offered to the one end that the sealing plug was kept away from to cross leading truck, and the guide bar is kept away from the one end of sealing plug and is fixed to extend to in the inner chamber of through-hole, and the outer wall fixed mounting U template of guide bar, and the leading wheel is installed in the inner wall of U template through the pivot rotation, and the outer wall of leading wheel and the inner wall of through-hole laminating each other.

Preferably, the outer wall of the guide rod is at least fixedly provided with a guide block, and the inner wall of the cross-shaped guide frame is provided with a guide groove matched with the guide block.

Preferably, the outer wall of the guide rod is annularly distributed and fixedly provided with a plurality of U-shaped plates, and the inner walls of the U-shaped plates are rotatably provided with guide wheels through rotating shafts.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the brake ring can slide up and down along the axial direction of the guide rod by rotating the limit bolt through the adjusting component, the compression amount of the jacking spring is accurately controlled, the movable distance of the sealing plug is controlled, the flow of the liquid mixture is accurately controlled, the situation that the sealing plug is damaged during use is prevented, and the service life of the float collar body is prolonged.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a cross-sectional view of the float collar body of the present utility model;

fig. 3 is an enlarged view of fig. 2 a in accordance with the present utility model.

In the figure: 1. a float collar body; 2. a cross-shaped guide frame; 3. a guide rod; 4. a seal ring; 5. a limit bolt; 6. a brake ring; 7. a pressing spring; 8. a guide block; 9. a sealing plug; 10. a guide wheel; 11. u-shaped board.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1-3, a high pressure type float collar device is shown, which comprises a float collar body 1 and a sealing plug 9 for drilling, wherein the sealing plug 9 is elastically installed in an inner cavity of the float collar body 1, and two ends of the float collar body 1 are connected with two sections of drilling pipes through the matching of internal and external threads so as to control the flow of an internal liquid mixture in a drilling process of a drilling pipe.

The inner wall fixed mounting of float collar body 1 has the sealing washer 4 that is used for with sealing plug 9 looks adaptation, and be provided with the adjusting part that is used for adjusting laminating compactness between sealing plug 9 and the sealing washer 4 in the inner chamber of float collar body 1, can let float collar body 1 inner chamber and the inner chamber of one of them section well drilling pipe cut off when sealing plug 9 continuously pushes up sealing washer 4, after sealing plug 9 and sealing washer 4 break away from, can let one of them section well drilling pipe and the communication of another section well drilling pipe inner chamber to the liquid mixture that produces in the drilling process transmits.

The adjusting component comprises a braking ring 6 and a cross-shaped guide frame 2, one end of a sealing plug 9, far away from a sealing ring 4, is fixedly provided with a guide rod 3, the cross-shaped guide frame 2 is fixedly arranged in an inner cavity of a float collar body 1, the cross-shaped guide frame 2 is positioned right above the sealing plug 9, one end of the sealing plug 9 and one end of the sealing ring 4 can be tightly attached through pressing the guide rod 3, meanwhile, in the drilling process, a liquid mixture continuously presses upwards after flowing into the inner cavity of the float collar body 1 through a drilling pipe rod, the sealing plug 9 and the sealing ring 4 are separated, at the moment, the liquid mixture can flow to the outside of a well through the drilling pipe rod, meanwhile, after the liquid mixture disappears, the sealing plug 9 and the sealing ring 4 are tightly attached again, the purpose of resealing the float collar body 1 can be achieved, and backflow of the liquid mixture is prevented.

Example 2

Referring to fig. 1-3, the brake ring 6 is slidably sleeved outside the guide rod 3, the outer wall of the guide rod 3 is fixedly sleeved with the pressing spring 7, the pressing spring 7 is located between the brake ring 6 and the sealing plug 9, the pressing spring 7 can continuously apply a sliding thrust to the guide rod 3 to be close to the sealing ring 4, the sealing plug 9 is tightly attached to the sealing ring 4, meanwhile, after the liquid mixture disappears, the pressing spring 7 can reset the guide rod 3, and the sealing plug 9 is attached to the sealing ring 4 again.

The limit bolt 5 is installed in the one end rotation that sealing plug 9 was kept away from to cross leading truck 2, the screw hole with limit bolt 5 looks adaptation is seted up to the one end edge of braking ring 6, can let braking ring 6 slide from top to bottom along the axis direction of guide bar 3 through rotating limit bolt 5, the accurate control of compression volume to roof pressure spring 7 realizes the mobilizable distance of control sealing plug 9, carries out accurate control to the flow of liquid mixture, prevents that sealing plug 9 from appearing damaging the condition when using, has improved float collar body 1 life.

One end of the jacking spring 7 is fixedly connected with the lower end face of the brake ring 6, and the other end of the jacking spring 7 is fixedly connected with the outer wall of the guide rod 3, so that the accuracy of the brake ring 6 in controlling the compression amount of the jacking spring 7 is improved, and the condition that the jacking spring 7 shakes when the compression amount is minimum is prevented.

The one end that cross leading truck 2 kept away from sealing plug 9 is annular distribution and has offered a plurality of mounting holes, all rotates in the inner chamber of a plurality of mounting holes and installs stop bolt 5, rotates a plurality of stop bolts 5 simultaneously and can realize the travel distance of brake ring 6, limits the slip orbit of brake ring 6 simultaneously, prevents the circumstances that appears the skew when brake ring 6 removes.

One end of a plurality of stop bolts 5, which is far away from the brake ring 6, is fixedly provided with a tensioning wheel, the tensioning wheels are rotationally connected through a tensioning belt, one tensioning wheel is rotated under the action of the tensioning belt, the tensioning wheels can be synchronously rotated, the movement of the brake ring 6 is finally realized, and the convenience of synchronous rotation of the stop bolts 5 is improved. The synchronous rotation of the plurality of limit bolts 5 can also be realized by using the existing multi-shaft tightening machine.

Example 3

Referring to fig. 1-3, a through hole matched with the guide rod 3 is formed at one end of the cross-shaped guide frame 2 far away from the sealing plug 9, one end of the guide rod 3 far away from the sealing plug 9 is fixedly extended into an inner cavity of the through hole, and the through hole can play a primary limiting role on the sliding track of the guide rod 3 so as to improve the sliding stability of the guide rod 3. Sealing rings sealed with the guide rods 3 are arranged at the upper end and the lower end of the through hole, so that when the guide rods 3 slide up and down, mud is prevented from entering and affecting the service life of the guide rods.

The outer wall fixed mounting U template 11 of guide bar 3, the guide wheel 10 is installed through the pivot rotation to the inner wall of U template 11, and the outer wall of guide wheel 10 and the inner wall of through-hole laminate each other, and guide wheel 10 has filled the gap that exists between guide bar 3 outer wall and the through-hole, has further improved guide bar 3 gliding stability, has reduced the frictional force when guide bar 3 slides from top to bottom simultaneously, has improved the smooth degree when guide bar 3 slides.

The outer wall fixed mounting of guide bar 3 has a guide block 8 at least, the guide way with guide block 8 looks adaptation has been seted up to the inner wall of cross leading truck 2, the outer wall of guide bar 3 is annular and distributes a plurality of guide blocks 8 of fixed mounting, a plurality of guide blocks 8 can further play the effect of inject to the sliding track of guide bar 3, the condition that appears the skew when preventing guide bar 3 to slide lets sealing plug 9 reset the back and can accurate removal to original position, improved the degree of sealing to float collar body 1 inner chamber.

The outer wall of guide bar 3 is annular distribution fixed mounting and has a plurality of U template 11, and the guide wheel 10 is installed in the inner wall of a plurality of U templates 11 all through the pivot rotation, can let the axis of guide bar 3 and the open end middle part of through-hole be in same horizontal line all the time, prevents that sealing plug 9 from receiving the condition that guide bar 3 appears the skew when liquid mixture punching press, lets sealing plug 9 outside atress even, plays the guard action to sealing plug 9.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process-method-article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process-method-article or apparatus.

Although embodiments of the present utility model 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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. High pressure type float collar device, including float collar body (1) and sealing plug (9) that are used for the well drilling, its characterized in that: the sealing plug (9) is elastically installed in the inner cavity of the float collar body (1), the sealing ring (4) which is used for being matched with the sealing plug (9) is fixedly installed on the inner wall of the float collar body (1), and an adjusting component which is used for adjusting the joint tightness between the sealing plug (9) and the sealing ring (4) is arranged in the inner cavity of the float collar body (1);

the adjusting component comprises a braking ring (6) and a cross-shaped guide frame (2), one end, far away from the sealing ring (4), of the sealing plug (9) is fixedly provided with a guide rod (3), the cross-shaped guide frame (2) is fixedly arranged in an inner cavity of the floating hoop body (1), the cross-shaped guide frame (2) is positioned right above the sealing plug (9), the braking ring (6) is in sliding sleeve connection with the outer part of the guide rod (3), the outer wall of the guide rod (3) is fixedly sleeved with a jacking spring (7), and the jacking spring (7) is positioned between the braking ring (6) and the sealing plug (9);

the one end rotation that sealing plug (9) was kept away from to cross leading truck (2) is installed limit bolt (5), the screw hole with limit bolt (5) looks adaptation is seted up to the one end edge of braking ring (6).

2. A high pressure float collar apparatus as in claim 1 wherein: one end of the jacking spring (7) is fixedly connected with the lower end face of the brake ring (6), and the other end of the jacking spring (7) is fixedly connected with the outer wall of the guide rod (3).

3. A high pressure float collar apparatus as in claim 1 wherein: the one end that sealing plug (9) was kept away from to cross leading truck (2) is annular distribution and has seted up a plurality of mounting holes, all rotates in the inner chamber of a plurality of mounting holes and installs spacing bolt (5), and the one end fixed mounting that a plurality of spacing bolts (5) kept away from brake ring (6) has the take-up pulley, rotates through the tensioning belt between a plurality of take-up pulleys and connects.

4. A high pressure float collar assembly as claimed in claim 3 wherein: the through hole with guide bar (3) looks adaptation is offered to the one end that sealing plug (9) was kept away from to cross leading truck (2), the one end that sealing plug (9) was kept away from to guide bar (3) is fixed to be extended to in the inner chamber of through hole, and outer wall fixed mounting U template (11) of guide bar (3), guide wheel (10) are installed in the inner wall of U template (11) through the pivot rotation, the outer wall of guide wheel (10) and the inner wall of through-hole laminating each other.

5. The high pressure float collar assembly of claim 4 wherein: the outer wall of the guide rod (3) is at least fixedly provided with a guide block (8), and the inner wall of the cross-shaped guide frame (2) is provided with a guide groove matched with the guide block (8).

6. The high pressure float collar assembly of claim 4 wherein: the outer wall of guide bar (3) is annular distribution fixed mounting and has a plurality of U template (11), and guide wheel (10) are all installed through the pivot rotation to the inner wall of a plurality of U template (11).