CN201730586U - Four-rubber cylinder compression packer - Google Patents
Four-rubber cylinder compression packer Download PDFInfo
- Publication number
- CN201730586U CN201730586U CN2010202703738U CN201020270373U CN201730586U CN 201730586 U CN201730586 U CN 201730586U CN 2010202703738 U CN2010202703738 U CN 2010202703738U CN 201020270373 U CN201020270373 U CN 201020270373U CN 201730586 U CN201730586 U CN 201730586U
- Authority
- CN
- China
- Prior art keywords
- central tube
- packing element
- rubber
- clamp spring
- spring seat
- 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 discloses a four-rubber cylinder compression packer used for an oil field, which consists of an upper joint (1), a central tube (2), a rubber cylinder group (3), a distance ring (4), a cutting sleeve (5), a clamp spring seat (6), a shear pin (7), a clamp spring (8), an upper cylinder liner (9) and a lower joint (10), wherein the upper joint (1), the central tube (2) and the lower joint (10) are sequentially connected together; the four rubber cylinders (3), the distance ring (4), the cutting sleeve (5), the clamp spring seat (6) and the upper cylinder liner (9) are sequentially sleeved outside the central tube (2); the clamp spring seat (6) is fixed on the central tube (2) through the shear pin (7); and the rigidity of the rubber cylinders at two sides is higher than the rigidity of the two rubber cylinders in the middle. The four-rubber cylinder compression packer is sealed reliably during working and does not easily block the well.
Description
Technical field
The utility model relates to packer technology field, oil field, relates in particular to a kind of four packing element compression packers.
Background technology
At present, the compression packer that the oil field is used generally is made up of three packing elements, also useful two or one 's.Cartridge all is one during work, in case this cartridge just in time is stuck in casing coupling place or internal surface of sleeve pipe fault location, will cause seal failure.
Summary of the invention
The purpose of this utility model is easily to cause the technical problem of seal failure in order to solve above-mentioned packer list seal operation packing element, and a kind of four packing element compression packers of double containment packing element rational in infrastructure are provided.
The utility model is at outside four packing elements of spacer ring suit at interval of central tube.
Two packing element hardness in the middle of both sides packing element hardness in described four packing elements is higher than.
The utility model mainly is one group of work packing element being made up of two or three independent packing elements original, is designed to one group of work packing element being made up of four independent packing elements.
The beneficial effects of the utility model are:
Four packing element compression packers have two work packing elements at work, if a cartridge lost efficacy, another packing element still works on, and increases the reliability of sealing.
The course of work of the present utility model and principle:
Packer setting: after packer is gone into the well, central tube adds hydraulic pressure, pressure enters the hydraulic cylinder of being made up of central tube, last cylinder sleeve, lower contact by the inlet opening on the central tube, produce thrust upwards, set by cutting ferrule compression packer packing element, at this moment, cutting ferrule is meshed with the jump ring tooth, clip spring seat is fixed on the central tube by shear pin, keeps the sealing state of packing element.
Packer work: when hydraulic pressure was held on packing element top, hydraulic coupling was converted into the downward thrust of packing element, affacted that cutting ferrule and jump ring mesh together on the cutting ferrule, and thrust passes to shear pin by jump ring, clip spring seat.Shear pin is fixed on the central tube, has offset the downward thrust of packing element, keeps the sealing state of packing element.Packer holds when pressing down, and the packing element thrust that makes progress directly affacts in the top connection, offsets the upwards thrust of packing element by top connection, keeps the sealing state of packing element.
Packer deblocking: when the upper lifting pipe post, under the acting in conjunction of packing element and sleeve pipe friction and packing element top hydraulic coupling, the downward thrust of packing element is to cutting ferrule, pass to shear pin by jump ring, clip spring seat, shear pin is fixed on the central tube, and when shear pin control during less than downward thrust, shear pin is cut off, cutting ferrule is descending, the packer deblocking.
Four packing element compression packers described in the utility model can be washing well compression packer, washing well compression packer not.
Description of drawings,
Fig. 1 is the cross-sectional schematic of the utility model embodiment.
The specific embodiment
See also shown in Figure 1ly, present embodiment is by top connection 1, central tube 2, packing element group 3, spacer ring 4, cutting ferrule 5, clip spring seat 6, shear pin 7, jump ring 8, goes up cylinder sleeve 9 and lower contact 10 constitutes, and top connection 1, central tube 2 and lower contact 10 are connected in turn.Four packing element group 3 interval spacer rings 4, cutting ferrule 5, clip spring seat 6 and last cylinder sleeves 9 are set in central tube 2 outsides successively, and clip spring seat 6 is fixed on the central tube 2 by shear pin 7.
Claims (2)
1. a packing element compression packer is characterized in that: at outside four packing elements of spacer ring suit at interval of central tube.
2. a kind of four packing element compression packers according to claim 1 is characterized in that: two packing element hardness in the middle of the both sides packing element hardness in described four packing elements is higher than.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202703738U CN201730586U (en) | 2010-07-26 | 2010-07-26 | Four-rubber cylinder compression packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202703738U CN201730586U (en) | 2010-07-26 | 2010-07-26 | Four-rubber cylinder compression packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201730586U true CN201730586U (en) | 2011-02-02 |
Family
ID=43521743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202703738U Expired - Fee Related CN201730586U (en) | 2010-07-26 | 2010-07-26 | Four-rubber cylinder compression packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201730586U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104213A (en) * | 2012-12-14 | 2013-05-15 | 中国石油集团川庆钻探工程有限公司 | High-temperature high-pressure testing packer |
| WO2017198121A1 (en) * | 2016-05-20 | 2017-11-23 | 天鼎联创密封技术（北京）有限公司 | Rubber cylinder having higher stiffness in upper end portion, packer, and bridge plug |
-
2010
- 2010-07-26 CN CN2010202703738U patent/CN201730586U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104213A (en) * | 2012-12-14 | 2013-05-15 | 中国石油集团川庆钻探工程有限公司 | High-temperature high-pressure testing packer |
| CN103104213B (en) * | 2012-12-14 | 2016-01-13 | 中国石油集团川庆钻探工程有限公司 | High-temperature high-pressure testing packer |
| WO2017198121A1 (en) * | 2016-05-20 | 2017-11-23 | 天鼎联创密封技术（北京）有限公司 | Rubber cylinder having higher stiffness in upper end portion, packer, and bridge plug |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110202 Termination date: 20140726 |
|
| EXPY | Termination of patent right or utility model |