CN114293931A - Hydraulic rotary guide shoe capable of drilling - Google Patents
Hydraulic rotary guide shoe capable of drilling Download PDFInfo
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- CN114293931A CN114293931A CN202111370555.1A CN202111370555A CN114293931A CN 114293931 A CN114293931 A CN 114293931A CN 202111370555 A CN202111370555 A CN 202111370555A CN 114293931 A CN114293931 A CN 114293931A
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- guide shoe
- valve
- valve seat
- valve rod
- impeller
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Abstract
The invention discloses a drillable hydraulic rotary guide shoe, which comprises a body, a valve seat and valve rod mechanism, a valve plate and an impeller guide shoe mechanism, wherein the valve seat and valve rod mechanism is arranged on the body; the device is used as the lowest end of a well completion pipe column, so that the pipe column can conveniently and smoothly pass through a highly deviated well and a horizontal open hole well when being lowered; the instrument is connected with the well completion tubular column, can pass through the big discharge capacity circulation of well completion tubular column internal passage when going into the well in-process and hinder, the rotation of drive guide shoe is slowly leading-in with the tubular column, the accessible is met and hinders the position and enter into appointed design position under the normal condition, can positive circulation pour into appointed degree of depth with functional liquid into after the tubular column targets in place, reverse self-closing can be realized to the instrument, the function that has the backflow of the injection liquid that prevents, inside adopts a large amount of aluminium system structures, the later stage can be realized drilling and milling, keep the structure of big latus rectum.
Description
Technical Field
The invention belongs to the technical field of drilling engineering, and particularly relates to a drillable hydraulic rotary guide shoe.
Background
Because the conventional guide shoe used in field operation has a single function, the guide shoe has poor guide effect, poor drillability and unstable sealing of the check valve. The guide shoe is characterized in that a guide shoe is arranged on the bottom of the guide shoe, a valve rod is arranged in the guide shoe, a guide shoe is arranged on the guide shoe, a guide hole is arranged in the guide hole, and the guide shoe is provided with a guide hole.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a drillable hydraulic rotary guide shoe.
The invention is realized by the following technical scheme:
a drillable hydraulic rotary guide shoe comprises a body, a valve seat and valve rod mechanism, a valve plate and an impeller guide shoe mechanism;
the valve seat and valve rod mechanism, the valve plate and the impeller guide shoe mechanism are sequentially arranged in the body from top to bottom;
the valve seat and valve rod mechanism comprises a fixed sleeve, a valve seat, a valve rod, a limiting sleeve and a spring, the lower end of the fixed sleeve is connected with the valve seat, the valve seat is fixedly connected with the inner wall of the body, the valve rod penetrates through the valve seat, the upper end of the valve rod is connected with the limiting sleeve, and the spring is arranged between the limiting sleeve and the valve seat and surrounds the valve rod;
the valve plate is fixedly connected with the body, a liquid passing hole is formed in the valve plate, and a bearing is arranged on the lower end face of the valve plate;
the impeller guide shoe mechanism comprises an impeller, a connecting sleeve, a guide shoe, a thrust bearing and a pressing cap, wherein the upper end of the impeller is connected with the bearing, the lower end of the impeller is connected with the connecting sleeve, the lower end of the connecting sleeve is connected with the guide shoe, the thrust bearing is arranged outside the connecting sleeve, and the pressing cap is arranged on the lower side of the thrust bearing and connected with the inner wall of the body.
In the above technical scheme, the guide shoe is of an eccentric head structure.
In the above technical solution, the guide shoe end is formed with a backflow hole.
The invention has the advantages and beneficial effects that:
the invention discloses a drillable hydraulic rotary guide shoe, which comprises a body, a valve seat and valve rod mechanism, a valve plate and an impeller guide shoe mechanism, wherein the valve seat and valve rod mechanism is arranged on the body; the assembly structure is as follows: the limiting sleeve is internally provided with a spring, the valve rod is connected with the limiting sleeve through a valve seat hole in a threaded manner, the valve seat is limited through the fixing sleeve, and the upper end of the valve seat is locked through the clamp spring. The valve plate is embedded with a bearing, the bearing is in interference fit with the upper end of the impeller, the lower end of the impeller is in threaded connection with the connecting sleeve, the thrust bearing is sleeved outside the connecting sleeve, the thrust bearing is fixed through the pressing cap, the external thread of the pressing cap is connected and fixed with the internal thread of the body, and the lower end of the connecting sleeve is in threaded connection with the guide shoe in an eccentric shape. When the well completion pipe column passes through a highly deviated well and a horizontal open hole well, the problem of pipe column blockage can be solved by the tool, the flow passage area in the tool is large, the forward circulating well washing with large displacement can be carried out, the impeller is driven to rotate, the guide shoe is eccentrically designed, the problem of blockage of a complex well can be conveniently solved through a large blockage surface, and the tool has the advantages of small displacement driving, large displacement circulation, drilling and milling and capability of passing through a large blockage surface.
Drawings
Fig. 1 is a view showing the structure of a drillable hydraulic rotary guide shoe.
Wherein, 1 is the body, 2 is the valve plate, 3 is the impeller, 4 is the adapter sleeve, 5 is the pressure cap, 6 is the guide shoe, 7 is thrust bearing, 8 is the bearing, 9 is the valve rod, 10 is the stop collar, 11 is the disk seat, 12 is fixed cover, 13 is the spring.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
The technical scheme of the invention is further explained by combining specific examples.
Examples
A drillable hydraulic rotary guide shoe is provided with the following assembly structure: spring 13 is installed in stop collar 10, and valve rod 9 passes through valve seat hole and stop collar 10 through threaded connection, and disk seat 11 is spacing through fixed cover 12, and the jump ring locking is passed through to the upper end. The valve plate 2 is internally embedded with a bearing 8, the bearing 8 is in interference fit with the upper end of the impeller 3, the lower end of the impeller 3 is in threaded connection with the connecting sleeve 4, meanwhile, the thrust bearing 7 is sleeved in the outer side of the connecting sleeve 4, the thrust bearing 7 is fixed through the pressing cap 5, meanwhile, the external thread of the pressing cap 5 is connected and fixed with the internal thread of the body, and the lower end of the connecting sleeve 4 is in threaded connection with the guide shoe 6 in an eccentric shape.
When the valve rod 9 is subjected to liquid pressure which is larger than the pretightening force of the spring 13, the valve rod 9 starts to move downwards, and the liquid enters the lower part. When liquid flows through the impeller 3, the impeller 3 is driven by water power to rotate by itself, and the bottom guide shoe 6 is driven to rotate. The guide shoe 6 can pass through a larger surface when rotating. The guide shoe 6 is designed to be of an eccentric head structure, and three backflow holes are formed in the body of the guide shoe 6. If the liquid flows reversely, the valve rod 9 is self-locked by the pretightening force of the spring 13, and the function of preventing the liquid from flowing back can be realized.
The invention is used for the operation of a well completion pipe column in a highly deviated well and a horizontal open hole well, and mainly solves the problem that the pipe column meets resistance in a well section with larger well deviation, the positive circulation with large displacement can be carried out at a resistance meeting point, a valve rod of a fluid direction control mechanism is opened, fluid enters a rotary driving mechanism, an impeller can rotate at a smaller displacement to drive a guide shoe at the bottom to rotate and pass through the resistance meeting point, the fluid direction control mechanism has the function of a one-way valve, when liquid flows back, the valve rod can be automatically closed through the pretightening force of a spring, drilling and milling can be carried out in the later period if necessary, only a body part is reserved, and the large well opening of the pipe column is kept.
The invention has been described in an illustrative manner, and it is to be understood that any simple variations, modifications or other equivalent changes which can be made by one skilled in the art without departing from the spirit of the invention fall within the scope of the invention.
Claims (3)
1. A drillable hydraulic rotary guide shoe is characterized by comprising a body, a valve seat and valve rod mechanism, a valve plate and an impeller guide shoe mechanism;
the valve seat and valve rod mechanism, the valve plate and the impeller guide shoe mechanism are sequentially arranged in the body from top to bottom;
the valve seat and valve rod mechanism comprises a fixed sleeve, a valve seat, a valve rod, a limiting sleeve and a spring, the lower end of the fixed sleeve is connected with the valve seat, the valve seat is fixedly connected with the inner wall of the body, the valve rod penetrates through the valve seat, the upper end of the valve rod is connected with the limiting sleeve, and the spring is arranged between the limiting sleeve and the valve seat and surrounds the valve rod;
the valve plate is fixedly connected with the body, a liquid passing hole is formed in the valve plate, and a bearing is arranged on the lower end face of the valve plate;
the impeller guide shoe mechanism comprises an impeller, a connecting sleeve, a guide shoe, a thrust bearing and a pressing cap, wherein the upper end of the impeller is connected with the bearing, the lower end of the impeller is connected with the connecting sleeve, the lower end of the connecting sleeve is connected with the guide shoe, the thrust bearing is arranged outside the connecting sleeve, and the pressing cap is arranged on the lower side of the thrust bearing and connected with the inner wall of the body.
2. A drillable hydraulic rotary guide shoe as defined in claim 1, wherein: the guide shoe is of an eccentric head structure.
3. A drillable hydraulic rotary guide shoe as defined in claim 1, wherein: the guide shoe end is formed with a backflow hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111370555.1A CN114293931A (en) | 2021-11-18 | 2021-11-18 | Hydraulic rotary guide shoe capable of drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111370555.1A CN114293931A (en) | 2021-11-18 | 2021-11-18 | Hydraulic rotary guide shoe capable of drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114293931A true CN114293931A (en) | 2022-04-08 |
Family
ID=80964902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111370555.1A Pending CN114293931A (en) | 2021-11-18 | 2021-11-18 | Hydraulic rotary guide shoe capable of drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114293931A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050199426A1 (en) * | 2004-03-12 | 2005-09-15 | Smith Kenneth L. | Rotatable drill shoe |
| CN201236973Y (en) * | 2008-08-09 | 2009-05-13 | 张子芳 | Tension rod type soft-sealing single-flow valve |
| CN209780842U (en) * | 2019-04-23 | 2019-12-13 | 中国石油集团渤海钻探工程有限公司 | Easily-drilled floating shoe |
| CN213330901U (en) * | 2020-08-27 | 2021-06-01 | 中国石油天然气集团有限公司 | Hydraulic self-rotating floating shoe |
| CN214035569U (en) * | 2020-11-27 | 2021-08-24 | 中国石油集团渤海钻探工程有限公司 | Eccentric hydraulic rotary guide shoe capable of repairing well |
-
2021
- 2021-11-18 CN CN202111370555.1A patent/CN114293931A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050199426A1 (en) * | 2004-03-12 | 2005-09-15 | Smith Kenneth L. | Rotatable drill shoe |
| CN201236973Y (en) * | 2008-08-09 | 2009-05-13 | 张子芳 | Tension rod type soft-sealing single-flow valve |
| CN209780842U (en) * | 2019-04-23 | 2019-12-13 | 中国石油集团渤海钻探工程有限公司 | Easily-drilled floating shoe |
| CN213330901U (en) * | 2020-08-27 | 2021-06-01 | 中国石油天然气集团有限公司 | Hydraulic self-rotating floating shoe |
| CN214035569U (en) * | 2020-11-27 | 2021-08-24 | 中国石油集团渤海钻探工程有限公司 | Eccentric hydraulic rotary guide shoe capable of repairing well |
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