CN201982056U - Fracturing packer - Google Patents
Fracturing packer Download PDFInfo
- Publication number
- CN201982056U CN201982056U CN2011200467627U CN201120046762U CN201982056U CN 201982056 U CN201982056 U CN 201982056U CN 2011200467627 U CN2011200467627 U CN 2011200467627U CN 201120046762 U CN201120046762 U CN 201120046762U CN 201982056 U CN201982056 U CN 201982056U
- Authority
- CN
- China
- Prior art keywords
- packing element
- packer
- piston
- central tube
- pressure break
- Prior art date
- 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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Abstract
The utility model relates to a fracturing packer which comprises an upper connector (1). The left end of the upper connector (1) is connected with an oil pipe, a central pipe (3) is connected in the upper connector (1) through screw threads, the central pipe (3) is externally provided with a packer rubber shaft (5), and the packer rubber shaft (5) is arranged in a packer rubber (4); the right end of the packer rubber (4) is compressed down in a piston (7) which is externally provided with a sleeve (9); and the central pipe (3) is connected in a lower connector (10) through screw threads, and the sleeve (9) is connected outside the lower connector (10) through screw threads.
Description
Technical field
The utility model belongs to the oil downhole tool, particularly a kind of pressure break packer.
Background technology
At present, the pressure break packer of the domestic and international no card grappling of using, hydraulic setting, hydraulic pressure deblocking, the expanding packing element that adopts, but adopt the expanding packing element when fracturing work, two kinds of power of axial shearing that living radial drawing and the frac pressure of cutting down output in being subjected to produces are held bottom pressure break that can't stand that pressure is high.
The utility model content
Technical problem to be solved in the utility model:
For improving the operating pressure of pressure break packer, improve the working life of packer.
The utility model is the technical scheme that solves the problems of the technologies described above proposition:
For solving the problems of the technologies described above, the utility model proposes a kind of pressure break formula packer, comprise top connection, central tube, packing element axle, piston, cylinder sleeve, lower contact is characterized in that the top connection internal thread connects central tube, central tube is adorned the packing element axle outward, the packing element axle places in the packing element, is pressed in the piston under the packing element right-hand member, and piston is adorned cylinder sleeve outward, the lower contact internal thread connects central tube, and the lower contact external screw thread connects cylinder sleeve.
Further, described packing element axle is provided with packing element axle half the circumference of the sleeve where it joins the shoulder, specifically can be upper shoulder and lower shoulder.
Further, described internal piston is provided with a die cavity.
The obtained beneficial effect of the utility model is:
The pressure break packer adopts the sealing of compression packing element, the operating pressure height, and pressure break is reliable, and the glue axle of packer inside is provided with shoulder in addition, and the compression travel of limit compression formula packing element is avoided the unlimited compression integral body of compression packing element to slide into the instrument outside and is caused tool failures.
Description of drawings
Fig. 1 is the structure chart of pressure break packer;
1, top connection; 2, top connection through hole; 3, central tube; 4, packing element; 5, packing element axle; 6, packing element pillow block shoulder; 7, piston; 8, central tube through hole; 9, cylinder barrel; 10, lower contact
The specific embodiment
As shown in Figure 1, a kind of pressure break formula of the utility model packer, comprise top connection 1, top connection 1 left end is connected with oil pipe, and top connection 1 internal thread connects central tube 3, central tube 3 outer dress packing element axles 5, packing element axle 5 places in the packing element 4, is pressed in the piston 7 piston 7 outer dress cylinder sleeves 9 under packing element 4 right-hand members, lower contact 10 internal threads connect central tube 3, and lower contact 10 external screw threads connect cylinder sleeve 9.For reaching spacing purpose, can be provided with packing element pillow block shoulder 6 on the packing element axle 5, and can further be set to spacing shoulder of packing element axle and the spacing shoulder of lower rubber cylinder axle.Piston 7 can further be provided with a die cavity.
Claims (3)
1. pressure break packer, comprise top connection (1), top connection (1) left end is connected with oil pipe, it is characterized in that, top connection (1) internal thread connects central tube (3), the outer dress of central tube (3) packing element axle (5), packing element axle (5) places in the packing element (4), is pressed in the piston (7) the outer dress of piston (7) cylinder sleeve (9) under packing element (4) right-hand member, lower contact (10) internal thread connects central tube (3), and lower contact (10) external screw thread connects cylinder sleeve (9).
2. a kind of pressure break packer as claimed in claim 1 is characterized in that, described packing element axle (5) is provided with packing element pillow block shoulder (6).
3. a kind of pressure break packer as claimed in claim 1 or 2 is characterized in that described piston (7) comprises a die cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200467627U CN201982056U (en) | 2011-02-25 | 2011-02-25 | Fracturing packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200467627U CN201982056U (en) | 2011-02-25 | 2011-02-25 | Fracturing packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201982056U true CN201982056U (en) | 2011-09-21 |
Family
ID=44609519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200467627U Expired - Fee Related CN201982056U (en) | 2011-02-25 | 2011-02-25 | Fracturing packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201982056U (en) |
-
2011
- 2011-02-25 CN CN2011200467627U patent/CN201982056U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20130225 |