CN2674078Y - Water injection packer - Google Patents
Water injection packer Download PDFInfo
- Publication number
- CN2674078Y CN2674078Y CN 200420038111 CN200420038111U CN2674078Y CN 2674078 Y CN2674078 Y CN 2674078Y CN 200420038111 CN200420038111 CN 200420038111 CN 200420038111 U CN200420038111 U CN 200420038111U CN 2674078 Y CN2674078 Y CN 2674078Y
- Authority
- CN
- China
- Prior art keywords
- rubber
- glue
- packing element
- central tube
- barrel
- 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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- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a water-injecting packer, comprising an upper joint, a lower joint, a central tube, a rubber-barrel assembly, a rubber-barrel base and a positioning ring. The water-injecting packer also comprises a rubber core which is arranged outside the central tube and in the rubber-barrel assembly. The upper end of the rubber-barrel base and the rubber core of the positioning ring are provided with pressing rings. The inner end of the rubber-barrel base which contacts the rubber-barrel of the rubber-barrel assembly is provided with a shoulder protector. The utility model adopts the double rubber-barrel structure and has good sealing performance, high sealing pressure and long service life. The water-injecting packer is applied to the pipe column of the water-injecting technology of the oil field extensively.
Description
One, technical field
The utility model relates to the oil exploitation downhole tool, relates in particular to a kind of water injection packer.
Two, background technology
Existing K344 water injection packer mainly is made of the packing element assembly of upper and lower joint, central tube and upward installation thereof, once be widely used in the oil-field flooding tubing string, but also existing pressure oscillation situation lower rubber cylinder two ends is prone to and tears phenomenon, sealing can not guarantee, seriously shorten the application life of instrument, therefore also influenced the normal operation of water injection technology.
Three, summary of the invention
The technical problem that the utility model solves provides a kind of improved water injection packer, and it can be avoided effectively or overcome shortcoming or the deficiency that exists in the above-mentioned prior art, improves the sealing performance of instrument and the application life of prolongation instrument effectively.
Water injection packer described in the utility model; comprise top connection, lower contact, central tube, packing element assembly, glue tube base, locating ring; also comprise install outside central tube, the glue core in the packing element assembly; the pressure ring of installing on the glue core in described glue tube base upper end, the locating ring; the inner packing element touching position with the packing element assembly of described glue tube base is installed on shoulder protector, protects packing element to avoid damage effectively.
Wherein, described central tube two ends are provided with only few cannelure of combining closely with the glue core with the contacted external surface of glue core, have strengthened the sealing performance of instrument.
Wherein, described central tube stage casing is to prevent that reservoir sand from entering the slot formula flow channels in glue in-core chamber.
The utility model has following advantage compared with prior art:
1, adopt double-deck packing element hermetically-sealed construction, improved the sealing performance and the sealing load of packer effectively, can evenly start packing element in the packer process of expansion simultaneously, it is stressed to have improved the packing element shoulder, prolongs the application life of packing element.
2, owing to adopted two packing element structures, when therefore externally slightly breakage appearred in packing element, inner bag glue core still can be protected excellent sealing performance, has improved the dependability of packer greatly.
Four, description of drawings
Accompanying drawing is a structural representation of the present utility model.
Five, the specific embodiment
Referring to accompanying drawing; a kind of water injection packer; comprise top connection 1, lower contact 12, central tube 10, packing element assembly 9, glue tube base 8, locating ring 5; also comprise install outside central tube 10, the glue core 7 in the packing element assembly 9; the pressure ring of installing on the glue core 7 in glue tube base 8 upper ends, the locating ring 56; glue tube base 8 inner packing element touching positions with packing element assembly 9 are installed shoulder protector, have protected the packing element shoulder injury-free effectively.Adapter sleeve 4 upper ends connect top connection 1, and the lower end connects locating ring 5, and glue tube base 8 upper ends connect locating ring 6, and the lower end is installed packing element assembly 9 and is connected shoulder protector 11, and central tube 10 two ends connect top connection 1 and lower contact 12.Check pin 3 is installed on adapter sleeve 4 and the glue tube base 8, and central tube 10 is installed the close part 2 that cuts with the junction of top connection 1 and lower contact 12.The stage casing of central tube 10 is to prevent that reservoir sand from entering the slot formula flow channels of glue in-core chamber 0.1mm-0.3mm width.
Claims (3)
1, a kind of water injection packer comprises top connection, lower contact, central tube, packing element assembly, glue tube base, locating ring, it is characterized in that also comprising install outside central tube, the glue core in the packing element assembly, the pressure ring of installing on the glue core in described glue tube base upper end, the locating ring, described glue tube base is inner to be installed on shoulder protector with packing element assembly packing element touching position.
2, water injection packer according to claim 1 is characterized in that described central tube two ends are provided with only few cannelure with the contacted external surface of glue core.
3, water injection packer according to claim 1 is characterized in that described central tube stage casing is to prevent that reservoir sand from entering the slot formula flow channels in glue in-core chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420038111 CN2674078Y (en) | 2004-01-13 | 2004-01-13 | Water injection packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420038111 CN2674078Y (en) | 2004-01-13 | 2004-01-13 | Water injection packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2674078Y true CN2674078Y (en) | 2005-01-26 |
Family
ID=34483958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420038111 Expired - Fee Related CN2674078Y (en) | 2004-01-13 | 2004-01-13 | Water injection packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2674078Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101498204B (en) * | 2009-02-25 | 2012-02-29 | 大庆油田有限责任公司 | Balance type step-by-step releasable flushing packer |
| CN111075387A (en) * | 2018-10-22 | 2020-04-28 | 中国石油化工股份有限公司 | Expanding type water injection packer with shoulder protection sleeve on upper portion of rubber sleeve |
-
2004
- 2004-01-13 CN CN 200420038111 patent/CN2674078Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101498204B (en) * | 2009-02-25 | 2012-02-29 | 大庆油田有限责任公司 | Balance type step-by-step releasable flushing packer |
| CN111075387A (en) * | 2018-10-22 | 2020-04-28 | 中国石油化工股份有限公司 | Expanding type water injection packer with shoulder protection sleeve on upper portion of rubber sleeve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |