CN203948556U - A kind of damping device that coordinates bumper jar to use - Google Patents
A kind of damping device that coordinates bumper jar to use Download PDFInfo
- Publication number
- CN203948556U CN203948556U CN201420173928.5U CN201420173928U CN203948556U CN 203948556 U CN203948556 U CN 203948556U CN 201420173928 U CN201420173928 U CN 201420173928U CN 203948556 U CN203948556 U CN 203948556U
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- CN
- China
- Prior art keywords
- axle
- shell
- annular shoulder
- spring
- annular
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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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- Vibration Dampers (AREA)
Abstract
The utility model discloses a kind of damping device that coordinates bumper jar to use, comprise shell, axle and spring, wherein part axle is positioned at shell, between axle and shell, formed an annular space, near every end of shell, be provided with the annular shoulder extending to axis direction, every end in axle is also provided with the annular shoulder extending to external diameter direction, shell annular shoulder and axle annular shoulder have formed an adjustable annular chamber jointly, in annular chamber, be provided with spring, axle can be moved to compression position to stretch position with in another direction in one direction with respect to shell, when axle is between stretch position and compression position during to-and-fro motion, spring is compressed by one end of one end of shell annular shoulder and axle annular shoulder opposite direction, the relative movement of axle with respect to shell resisted in the compression of spring, and the mechanical energy of axle motion is transformed for potential energy.The beneficial effects of the utility model: during construction, this vibration damper is directly connected to above bumper jar, when bumper jar starts, card tubing string or instrument are met to when applying enough large axial blows power and carry out unfreezing in down-hole, can alleviate jarring force to the transmission of downhole tool miscellaneous part, thereby avoid downhole tool to exempt from damage.
Description
Technical field
The utility model relates to a kind of downhole tool, particularly relates to a kind of bumper jar that slows down the damping device that the cooperation bumper jar of the axial blows power that card tubing string or instrument apply uses is met in down-hole.
Background technique
At present, when oil gas well drilling, workover eration, often there will be tubing string or downhole tool to meet the situation of card, thereby cause construction complicated.In order to make down-hole meet card tubing string or instrument unfreezing, be necessary down-hole chance card tubing string or instrument to apply impact axial force.Bumper jar has been applied for many years as a kind of conventional releasing tool, has obtained good effect, but also exists significantly not enough.When applying traditional bumper jar and carrying out unfreezing operation, if axial blows power is enough large, meeting so card tubing string or instrument will unfreezing, yet, when axial blows power is blocked tubing string or instrument unfreezing even as big as making to meet, axial blows power may be damaged too greatly other parts of downhole tool.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of damping device that coordinates bumper jar to use, during construction, this vibration damper is directly connected to bumper jar above, when bumper jar starts, card tubing string or instrument are met to when applying enough large axial blows power and carry out unfreezing in down-hole, can alleviate jarring force to the transmission of other parts of downhole tool, thereby avoid downhole tool to be damaged.
For solving the problems of the technologies described above, the utility model proposes a kind of damping device that coordinates bumper jar to use, comprise shell, axle and spring, wherein part axle is positioned at shell, between axle and shell, formed an annular space, near every end of shell, be provided with the annular shoulder extending to axis direction, every end in axle is also provided with the annular shoulder that outward direction extends, shell annular shoulder and axle annular shoulder have formed an adjustable annular chamber jointly, in annular chamber, be provided with spring, axle can be moved to compression position to stretch position with in another direction in one direction with respect to shell, when axle is between stretch position and compression position during to-and-fro motion, spring is compressed by one end of one end of shell annular shoulder and axle annular shoulder opposite direction, the relative movement of axle with respect to shell resisted in the compression of spring, and the mechanical energy of axle motion is transformed for potential energy, the Inner Dimension of described shell annular shoulder is less than the Inner Dimension of shell, one of them described axle annular shoulder forms on axle body, and another axle annular shoulder is to form in the elongated portion of axle, described spring is one pile of cup spring, the every end of described spring is provided with piston, in described annular chamber, be full of fluid, piston is provided with a port, and controllable flow body enters and flow out the flow of annular chamber, thereby the dynamic response of spring is exerted an influence, hydrodynamic pressure in described annular chamber and hydrostatic equilibrium.
In sum, the damping device that the cooperation bumper jar the utility model proposes uses has following advantage:
By this vibration damper be directly connected to bumper jar above, when bumper jar starts, card tubing string or instrument are met to when applying enough large axial blows power and carry out unfreezing in down-hole, can alleviate jarring force to the transmission of other parts of downhole tool, thereby avoid downhole tool to exempt from damage.
Accompanying drawing explanation
Fig. 1 is the cross sectional representation of vibration damper when meta;
Fig. 2 is the cross sectional representation of vibration damper when stretch position;
Fig. 3 is the cross sectional representation of vibration damper when compression position.
In figure, 1 shell, 2 one-way valves, 3 axles, 4 shoulder ends, 5 axle annular shoulders, 6 shell annular shoulders, 7 pistons, 8 ports, 9 axle elongated portion, 10 springs
Embodiment
Below in conjunction with drawings and the specific embodiments, the technical solution of the utility model is elaborated:
As shown in the figure, the damping device that the cooperation bumper jar the utility model proposes uses, comprises shell 1, axle 3 and spring 10, and wherein part axle 3 is positioned at shell, between shell 1 and axle 3, forms an annular space.Axle 3 can be with respect to shell 1 axial motion.Near the every end of shell 1, be provided with annular shoulder 6, and radially to axis direction, extend.Annular shoulder 6 is that the shoulder end 4 that is sealedly attached to shell 1 every end forms, and shoulder end 4 Inner Dimensions are less than the Inner Dimension of shell 1.
Axle 3 is equally also provided with annular shoulder 5 near every end, but extends radially outwardly.One of them annular shoulder 5 is arranged in axle, and another annular shoulder 5 is arranged in axle elongated portion 9.
When meta, the annular shoulder 6 of shell 1 and the annular shoulder 5 of axle 3 have formed an adjustable annular chamber jointly.Spring 10 is positioned at the inside of annular chamber, is generally one pile of cup spring.Conventionally, spring 10 is designed to the weight of support shock absorber, can keep vibration damper in meta when incomplete confined state.Under the effect of power that is passed to axle 3, spring 10 can be compressed.
Every end at spring 10 is provided with piston 7.The thickness of piston 7 is enough to fill the annular space between axle 3 and shell 1.Piston 7 is also provided with Sealing, the annular chamber between salable piston 7.In annular chamber, be full of liquid, at least one piston 7 comprises at least one port 8, and controllable flow body enters and flow out the flow of annular chamber, thereby the dynamic response of spring 10 is exerted an influence.Port 8 allows the fluid balance hydrostatic pressure of annular chamber, and adjusts the pressure variation causing due to temperature variation.Piston 7 also at least comprises an one-way valve, can allow fluid enter annular chamber and can not flow out.Preferably, between two pistons 7, have a port 8 and an one-way valve 2 at least.Port 8 and one-way valve 2 can be arranged on identical piston, also can be arranged on different pistons.According to the expection performance characteristic of vibration damper, in any one piston 7, more than one port 8 and one-way valve 2 can be set.
During construction, vibration damper is directly connected to the G.I.H above of bumper jar.During unfreezing operation, the startup of bumper jar is for meeting card tubing string or instrument provides axial blows power in down-hole.Vibration damper, by restriction motion with respect to shell 1 to axle 3 between the stretch position of axial direction one end and the compression position of another axial direction, makes axial blows power retarded.When bumper jar starts, jarring force is passed to axle 3 and makes it or move to stretch position, or moves to compression position.Axle 3 makes one of them axle annular shoulder 5 move to the annular shoulder 6 of the shell relative with spring 10 with respect to the motion of shell 1.Because it is overlapping that piston 7 thickness are enough to a part for the annular shoulder 6 of shell 1 and the annular shoulder 5 of axle 3, the motion of one of them axle annular shoulder 6 outside shell annular shoulder 5 also makes piston 7 motion compresses springs 10.Motion by axle 3 with respect to shell 1, thus at least a portion jarring force is used to Compress Spring 10.The compression of spring 10 has alleviated the transmission of jarring force to downhole tool miscellaneous part.
And, axle 3 motion compresses springs 10, mechanical energy is converted into potential energy, and therefore, the mutual conversion between potential energy and mechanical energy can make axle 3 produce to-and-fro motion, or in stretch position, or in compression position.Therefore,, once initial jarring force is transferred to axle 3, spring 10 makes axle persistent movement back and forth between stretch position and compression position, until axle is returned to meta.
Claims (7)
1. a damping device that coordinates bumper jar to use, comprise shell, axle and spring, wherein a part of axle is positioned at shell, between axle and shell, formed an annular space, near every end of shell, be provided with the annular shoulder extending to axis direction, every end in axle is also provided with the annular shoulder that outward direction extends, shell annular shoulder and axle annular shoulder have formed an adjustable annular chamber jointly, in annular chamber, be provided with spring, axle can be moved to compression position to stretch position with in another direction in one direction with respect to shell, when axle is between stretch position and compression position during to-and-fro motion, spring is compressed by one end of one end of shell annular shoulder and axle annular shoulder opposite direction, the relative movement of axle with respect to shell resisted in the compression of spring, and the mechanical energy of axle motion is transformed for potential energy.
2. the damping device that cooperation bumper jar as claimed in claim 1 uses, is characterized in that, the Inner Dimension of described shell annular shoulder is less than the Inner Dimension of shell.
3. the damping device that cooperation bumper jar as claimed in claim 1 uses, is characterized in that, one of them described axle annular shoulder forms on axle body, and another axle annular shoulder forms in axle elongated portion.
4. the damping device that cooperation bumper jar as claimed in claim 1 uses, is characterized in that, described spring is one pile of cup spring.
5. the damping device that cooperation bumper jar as claimed in claim 1 uses, is characterized in that, the every end of described spring is provided with piston.
6. the damping device that cooperation bumper jar as claimed in claim 1 uses, is characterized in that, in described annular chamber, be full of fluid, piston is provided with a port, and controllable flow body enters and flow out the flow of annular chamber, thereby the dynamic response of spring is exerted an influence.
7. the damping device that cooperation bumper jar as claimed in claim 1 uses, is characterized in that the hydrodynamic pressure in described annular chamber and hydrostatic equilibrium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420173928.5U CN203948556U (en) | 2014-04-11 | 2014-04-11 | A kind of damping device that coordinates bumper jar to use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420173928.5U CN203948556U (en) | 2014-04-11 | 2014-04-11 | A kind of damping device that coordinates bumper jar to use |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203948556U true CN203948556U (en) | 2014-11-19 |
Family
ID=51890593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420173928.5U Expired - Fee Related CN203948556U (en) | 2014-04-11 | 2014-04-11 | A kind of damping device that coordinates bumper jar to use |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203948556U (en) |
-
2014
- 2014-04-11 CN CN201420173928.5U patent/CN203948556U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: CAVAVILLE ENERGY SERVICES LTD. Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: CAVAVILLE ENERGY SERVICES LTD. Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141119 Termination date: 20150411 |
|
| EXPY | Termination of patent right or utility model |