CN204002679U - Prevent the open hole packer of locking mechanism overload - Google Patents
Prevent the open hole packer of locking mechanism overload Download PDFInfo
- Publication number
- CN204002679U CN204002679U CN201420393287.4U CN201420393287U CN204002679U CN 204002679 U CN204002679 U CN 204002679U CN 201420393287 U CN201420393287 U CN 201420393287U CN 204002679 U CN204002679 U CN 204002679U
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- locking mechanism
- piston
- open hole
- retaining ring
- packing element
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Abstract
The utility model provides a kind of open hole packer that prevents locking mechanism overload, comprising: packing element; Locking mechanism, it comprises two retaining rings in the outside that is arranged on described packing element, one of them retaining ring arranges in the mode that can move to described packing element; Piston; And antioverloading parts, it is arranged between described retaining ring and described piston, is connected to described piston by the first shear pin, in the time that piston moves downward, the first shear pin fracture, antioverloading parts bear most load, can effectively prevent locking mechanism overload.The utility model is external and internal pressure is poor while exceeding certain value, and the pin of antioverloading mechanism is cut short, and retaining ring load is removed, and plays the effect of protection retaining ring.
Description
Technical field
The utility model belongs to petroleum oil well completion instrument, particularly a kind of open hole packer that prevents locking mechanism overload.
Background technology
In use, the load being subject to due to retaining mechanism is very large for packer, and easily produces sudden change; easily go out to cause retaining mechanism destroyed, thereby cause the accident, therefore need for retaining mechanism designs one can antioverloading parts; carry out protection equipment, improve application life.
Utility model content
For addressing the above problem, the utility model provides a kind of open hole packer that prevents locking mechanism overload, comprising:
Packing element;
Locking mechanism, it comprises two retaining rings in the outside that is arranged on described packing element, one of them retaining ring arranges in the mode that can move to described packing element;
Piston; And
Antioverloading parts, it is arranged between described retaining ring and described piston, is connected to described piston by the first shear pin, in the time that piston moves downward, the first shear pin fracture, antioverloading parts bear most load, can effectively prevent locking mechanism overload.
Preferably, in the described open hole packer that prevents locking mechanism overload, described antioverloading parts are also connected to described retaining ring by the second shear pin.
Preferably, in the described open hole packer that prevents locking mechanism overload, two clinchs that described antioverloading parts comprise main body and extended to both sides by described main body, one of them overlapping part is in the outside of the bottom of described piston, be connected with the bottom of described piston by the first shear pin, another overlapping part, in the outside of the upper end of described retaining ring, is connected with the upper end of described retaining ring by the second shear pin.
Preferably, in the described open hole packer that prevents locking mechanism overload, described the first shear pin is circumference array on described piston.
Preferably, in the described open hole packer that prevents locking mechanism overload, the interior diameter of described clinch is slightly less than the external diameter of described packing element.
Preferably, in the described open hole packer that prevents locking mechanism overload, described top connection and described lower contact respectively thread seal are connected to the top and bottom of described packing element.
Preferably, in the described open hole packer that prevents locking mechanism overload, between the upper surface of described piston and the lower surface of described top connection, leave space, the position corresponding with described space at described packing element is also provided with through hole, the upper surface of described piston, the inner surface of the lower surface of described top connection and described overlap joint annulus forms a thrust chamber, while entering pressure in top connection, air-flow enters in thrust chamber by through hole, make piston produce a downward thrust, and produce shearing force between antioverloading parts, thereby shear pin fracture, the anti-power of sudden change is here applied to suddenly on locking mechanism, cause overload, can effectively protect equipment.
The utility model provides a kind of open hole packer that prevents locking mechanism overload, comprising: packing element; Locking mechanism, it comprises two retaining rings in the outside that is arranged on described packing element, one of them retaining ring arranges in the mode that can move to described packing element; Piston; And antioverloading parts, it is arranged between described retaining ring and described piston, is connected to described piston by the first shear pin, in the time that piston moves downward, the first shear pin fracture, antioverloading parts bear most load, can effectively prevent locking mechanism overload.The utility model is external and internal pressure is poor while exceeding certain value, and the pin of antioverloading mechanism is cut short, and retaining ring load is removed, and plays the effect of protection retaining ring.
Brief description of the drawings
Fig. 1 is the structural representation that the utility model prevents the open hole packer of locking mechanism overload.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail, to make those skilled in the art can implement according to this with reference to manual word.
The utility model provides a kind of open hole packer that prevents locking mechanism overload, comprising:
Packing element 1;
Locking mechanism 2, it comprises two retaining rings in the outside that is arranged on described packing element, one of them retaining ring arranges in the mode that can move to described packing element 1;
Piston 3; And
Antioverloading parts 4, it is arranged between described retaining ring and described piston 3, is connected to described piston 3 by the first shear pin 5, in the time that piston moves downward, the first shear pin fracture, antioverloading parts bear most load, can effectively prevent locking mechanism overload.
In the described open hole packer that prevents locking mechanism overload, described antioverloading parts 4 are also connected to described retaining ring by the second shear pin.
In the described open hole packer that prevents locking mechanism overload, two clinchs that described antioverloading parts 4 comprise main body and extended to both sides by described main body, the outside of the bottom that one of them overlapping part is filled in described work 3, be connected with the bottom of described piston 3 by the first shear pin 5, another overlapping part, in the outside of the upper end of described retaining ring, is connected with the upper end of described retaining ring by the second shear pin.
In the described open hole packer that prevents locking mechanism overload, described the first shear pin 5 is circumference array on described piston.
In the described open hole packer that prevents locking mechanism overload, the interior diameter of described clinch is slightly less than the external diameter of described packing element 1.
In the described open hole packer that prevents locking mechanism overload, top connection 6 and lower contact 7 respectively thread seal are connected to the top and bottom of described packing element 1.
In the described open hole packer that prevents locking mechanism overload, between the lower surface of the upper surface of described piston 3 and described top connection 6, leave space, the position corresponding with described space at described packing element 1 is also provided with through hole, the upper surface of described piston, the inner surface of the lower surface of described top connection and described overlap joint annulus forms a thrust chamber, while entering pressure in top connection, air-flow enters in thrust chamber by through hole, make piston produce a downward thrust, and produce shearing force between antioverloading parts, thereby shear pin fracture, the anti-power of sudden change is here applied to suddenly on locking mechanism, cause overload, can effectively protect equipment.
The utility model provides a kind of open hole packer that prevents locking mechanism overload, comprising: packing element; Locking mechanism, it comprises two retaining rings in the outside that is arranged on described packing element, one of them retaining ring arranges in the mode that can move to described packing element; Piston; And antioverloading parts, it is arranged between described retaining ring and described piston, is connected to described piston by the first shear pin, in the time that piston moves downward, the first shear pin fracture, antioverloading parts bear most load, can effectively prevent locking mechanism overload.The utility model is external and internal pressure is poor while exceeding certain value, and the pin of antioverloading mechanism is cut short, and retaining ring load is removed, and plays the effect of protection retaining ring.
Although embodiment of the present utility model is open as above, but it is not restricted to listed utilization in manual and embodiment, it can be applied to the various fields of the present utility model that are applicable to completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the utility model is not limited to specific details and illustrates here and the legend of describing.
Claims (7)
1. an open hole packer that prevents locking mechanism overload, is characterized in that, comprising:
Packing element;
Locking mechanism, it comprises two retaining rings in the outside that is arranged on described packing element, one of them retaining ring arranges in the mode that can move to described packing element;
Piston; And
Antioverloading parts, it is arranged between described retaining ring and described piston, is connected to described piston by the first shear pin.
2. the open hole packer that prevents locking mechanism overload as claimed in claim 1, is characterized in that, described antioverloading parts are also connected to described retaining ring by the second shear pin.
3. the open hole packer that prevents locking mechanism overload as claimed in claim 2, it is characterized in that, two clinchs that described antioverloading parts comprise main body and extended to both sides by described main body, one of them overlapping part is in the outside of the bottom of described piston, be connected with the bottom of described piston by the first shear pin, another overlapping part, in the outside of the upper end of described retaining ring, is connected with the upper end of described retaining ring by the second shear pin.
4. the open hole packer that prevents locking mechanism overload as claimed in claim 1, is characterized in that, described the first shear pin is circumference array on described piston.
5. the open hole packer that prevents locking mechanism overload as claimed in claim 3, is characterized in that, the interior diameter of described clinch is slightly less than the external diameter of described packing element.
6. the open hole packer that prevents locking mechanism overload as claimed in claim 5, is characterized in that, top connection and lower contact respectively thread seal are connected to the top and bottom of described packing element.
7. the open hole packer that prevents locking mechanism overload as claimed in claim 6, it is characterized in that, between the upper surface of described piston and the lower surface of described top connection, leave space, the position corresponding with described space at described packing element is also provided with through hole, and the upper surface of described piston, the lower surface of described top connection and the inner surface that is positioned at the described clinch in outside of the bottom of described piston form a thrust chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420393287.4U CN204002679U (en) | 2014-07-16 | 2014-07-16 | Prevent the open hole packer of locking mechanism overload |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420393287.4U CN204002679U (en) | 2014-07-16 | 2014-07-16 | Prevent the open hole packer of locking mechanism overload |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204002679U true CN204002679U (en) | 2014-12-10 |
Family
ID=52042699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420393287.4U Active CN204002679U (en) | 2014-07-16 | 2014-07-16 | Prevent the open hole packer of locking mechanism overload |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204002679U (en) |
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2014
- 2014-07-16 CN CN201420393287.4U patent/CN204002679U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |