CN201496025U - Hydraulic rotary well plugging device - Google Patents
Hydraulic rotary well plugging device Download PDFInfo
- Publication number
- CN201496025U CN201496025U CN2009202269816U CN200920226981U CN201496025U CN 201496025 U CN201496025 U CN 201496025U CN 2009202269816 U CN2009202269816 U CN 2009202269816U CN 200920226981 U CN200920226981 U CN 200920226981U CN 201496025 U CN201496025 U CN 201496025U
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- CN
- China
- Prior art keywords
- packing element
- piston
- plugging device
- well plugging
- housing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Sealing Devices (AREA)
Abstract
The utility model discloses a hydraulic rotary well plugging device, including a shell body on which an upper cover is fixedly connected; a rubber drum which is used for a ring-shaped space formed between a sealing pipe post and a sleeve is arranged in the shell body; a rotator is arranged on the rubber drum; an oil inlet is arranged on the shell body; a piston is arranged below the rubber drum; sealing rings are respectively arranged between the piston and the shell body and between the rotator and the upper cover; a groove is arranged below the plastic tube; and an abdicating space is arranged between the rubber drum and the piston. The hydraulic rotary well plugging device has simple structure and convenient use and can effectively reduce the pressure in a sealing cavity which is formed by the shell body and the upper cover, thereby prolonging the service life of the plastic tube and the sealing ring, and being suitable for promotion and use.
Description
Technical field
The utility model relates to the workover treatment equipment of petroleum industry, relates in particular to a kind of hydraulic rotating well plugging device.
Background technology
At present, in the workover treatment of petroleum industry, especially carry out anti-circulation time and generally seal the annular space that rotates between tubing string and sleeve pipe by hydraulic rotating well plugging device at the oil-water well heavy repair task.Existing hydraulic rotating well plugging device generally by housing, central tube, bearing, gland, packing element and up and down " O " RunddichtringO, square clamp, suppress mouthful etc. and to form.Heave packing element and embrace tubing string from suppressing mouthful to suppress during use, comprise drilling rod and kelly bar etc., play the purpose of annular space between sealing tubing string and sleeve pipe to the housing inner chamber.Along with the rotation of tubing string, square clamp drives packing element and together rotates, and realizes the purpose of not only rotating but also sealing.
In the course of work, when tubing string transfer or on carry, string collar is when the cartridge because the box cupling diameter is bigger than the diameter of tubing string, so cause packing element moment by excessive extruding, the phenomenon of tearing easily, thereby the application life of having reduced packing element; In addition, because liquid is incompressible, form instantaneous high pressure in the housing, can reach as calculated more than the 60Mpa, " O " RunddichtringO does great damage and causes leakage like this to packing element and up and down; " O " RunddichtringO linear velocity allowable is low, and heatproof is low, not the abrasion of tempering in the ability mud; In addition, general cartridge is an expansion type, expands repeatedly, tears, and the joint of packing element and two ends metal pipe nipple breaks easily; Above problem causes existing hydraulic rotating well plugging device working life short, and sealing load is low, and packing element and sealing ring very easily damage.
The utility model content
The utility model overcomes defective of the prior art and provides a kind of simple in structure, can reduce the annular seal space internal pressure, thus the hydraulic rotating well plugging device that prolongs the application life of packing element and sealing ring
For achieving the above object, the technical solution of the utility model is: hydraulic rotating well plugging device, comprise housing, be fixedly connected with loam cake on the described housing, be provided with the packing element that is used to seal the annular space that forms between tubing string and the sleeve pipe in the described housing, described packing element is provided with rotary body, described housing is provided with oil-in, the below of described packing element is provided with piston, be equipped with sealing ring between described piston and the housing and between rotary body and the loam cake, described packing element is provided with groove, is provided with between described packing element and the described piston to allow bit space.
As a kind of improvement, be fixedly connected with centralizer on the described rotary body, described centralizer is provided with alignment bearing.
As further improvement, described sealing ring adopts the movable sealing of Kalsi high pressure rotary.
After having adopted technique scheme, the beneficial effect that the utility model is obtained is: by oil-in is set on housing, below packing element, be provided with piston then, the fluid that enters from oil-in can promote piston and moves upward like this, thereby the last thrust by piston is compressed packing element, make it that radial deformation take place, seal the annular space between tubing string and the sleeve pipe; By groove is set on packing element, when the packing element pressurized, can make it have certain spatial accommodation like this, can prevent that the packing element pressurized from tearing breaks, thereby prolongs the application life of packing element; Between packing element and piston, leave and allow bit space, can reduce the annular seal space pressure inside like this, help protecting packing element and sealing ring.
Description of drawings
Accompanying drawing is the structural representation of the utility model embodiment;
Among the figure: 1. housing; 2. loam cake; 3. packing element; 4. rotary body; 5. piston; 6. oil-in; 7. sealing ring; 8. groove; 9. allow bit space; 10. centralizer; 11. alignment bearing.
The specific embodiment
As shown in drawings, hydraulic rotating well plugging device comprises housing 1, loam cake 2, packing element 3, rotary body 4, piston 5.Wherein, loam cake 2 is fixedly connected on the described housing 1, makes it form annular seal space by housing 1 and loam cake 2.
Above-mentioned packing element 3 is arranged on and is used for sealing the annular space that forms between tubing string and the sleeve pipe in the described housing 1, and packing element 3 adopts the compression packing element, makes packing element 3 be difficult for tearing long service life by compression.
Rotary body 4 is arranged on the packing element 3, is provided with aligning rod thrust bearing between loam cake 2 and rotary body 4, bears because the last thrust that borehole pressure applies.Simultaneously, on rotary body 4, be fixedly connected with centralizer 10, described centralizer 10 is provided with alignment bearing 11, because when work, rotary body 4 and packing element 3, centralizer 10, piston 5 rotate together, so can guarantee under the effect of alignment bearing 11 that by this structure rotary body 4 rotates around the center.
Above-mentioned piston 5 is arranged on the below of packing element 3, and is provided with oil-in 6 on housing 1, by to 6 dozens of hydraulic oil of oil-in, it is up to promote piston 5 then, piston 5 compression packing elements 3 make it that radial deformation take place, and seal up the annular space between tubing string and the sleeve pipe.
Between piston 5 and the housing 1 and between rotary body 4 and the loam cake 2 sealing ring 7 is being installed all, described sealing ring 7 adopts the movable sealing of Kalsi high pressure rotary, it is this that to be sealed in drilling well reliable with functional performance on the rotating well plugging device, and sealing ring 7 linear velocities are low, the abrasion that the movable sealing of Kalsi high pressure rotary can anti-mud be tempered has effectively prolonged application life of sealing ring 7.
On above-mentioned packing element 3, be provided with groove 8, can make packing element 3 when being squeezed, have certain spatial accommodation, can prevent that like this packing element 3 pressurizeds from tearing and break, thereby prolong the application life of packing element 3 by groove 8.
Between described packing element 3 and described piston 5, be provided with and allow bit space 9, can not produce too high pressure, help protecting packing element 3 and sealing ring 7 not to be damaged, effectively prolong their application life by bit space 9 can be made in the annular seal space.
During work, by 6 dozens of hydraulic oil of oil-in, it is up to promote piston 5, and piston 5 compression packing elements 3 make it that radial deformation take place, thereby seal up the annular space between tubing string and the sleeve pipe.When celebrating a festival when hoop, because packing element 3 designs have groove 8, leave between packing element 3 and the piston 5 simultaneously and allow bit space 9, packing element 3 is not broken when compression, and make in the annular seal space and can not produce too high pressure, help protecting sealing ring 7.
The utility model is simple in structure, and is easy to use, can effectively reduce the annular seal space pressure inside, thereby prolongs the application life of packing element and sealing ring, is fit to promote the use of.
Certainly, the utility model is not limited to the above-mentioned specific embodiment, and in a word, those skilled in the art is from above-mentioned enlightenment, and other that expected replaced structure and all belonged within the protection domain of the present utility model.
Claims (4)
1. hydraulic rotating well plugging device, comprise housing, be fixedly connected with loam cake on the described housing, be provided with the packing element that is used to seal the annular space that forms between tubing string and the sleeve pipe in the described housing, described packing element is provided with rotary body, and described housing is provided with oil-in, the below of described packing element is provided with piston, be equipped with sealing ring between described piston and the housing and between rotary body and the loam cake, it is characterized in that: described packing element is provided with groove, is provided with between described packing element and the described piston to allow bit space.
2. hydraulic rotating well plugging device according to claim 1 is characterized in that: be fixedly connected with centralizer on the described rotary body, described centralizer is provided with alignment bearing.
3. hydraulic rotating well plugging device according to claim 2 is characterized in that: described sealing ring adopts the movable sealing of Kalsi high pressure rotary.
4. hydraulic rotating well plugging device according to claim 3 is characterized in that: described packing element is the compression packing element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202269816U CN201496025U (en) | 2009-09-21 | 2009-09-21 | Hydraulic rotary well plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202269816U CN201496025U (en) | 2009-09-21 | 2009-09-21 | Hydraulic rotary well plugging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201496025U true CN201496025U (en) | 2010-06-02 |
Family
ID=42439233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202269816U Expired - Fee Related CN201496025U (en) | 2009-09-21 | 2009-09-21 | Hydraulic rotary well plugging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201496025U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061900A (en) * | 2010-12-14 | 2011-05-18 | 雷宽成 | Rotary self-sealing well sealer |
| CN107387016A (en) * | 2017-09-04 | 2017-11-24 | 江苏雄越石油机械设备制造有限公司 | Hanging device for slips casing |
| CN111577192A (en) * | 2020-04-10 | 2020-08-25 | 中煤科工集团西安研究院有限公司 | Orifice pressure-bearing sealing device for underground coal mine water prevention and control composite directional drilling |
-
2009
- 2009-09-21 CN CN2009202269816U patent/CN201496025U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061900A (en) * | 2010-12-14 | 2011-05-18 | 雷宽成 | Rotary self-sealing well sealer |
| CN107387016A (en) * | 2017-09-04 | 2017-11-24 | 江苏雄越石油机械设备制造有限公司 | Hanging device for slips casing |
| CN107387016B (en) * | 2017-09-04 | 2019-09-10 | 江苏雄越石油机械设备制造有限公司 | Hanging device for slips casing |
| CN111577192A (en) * | 2020-04-10 | 2020-08-25 | 中煤科工集团西安研究院有限公司 | Orifice pressure-bearing sealing device for underground coal mine water prevention and control composite directional drilling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20120921 |