CN203742528U - Hydraulic controlled type expansion packer - Google Patents
Hydraulic controlled type expansion packer Download PDFInfo
- Publication number
- CN203742528U CN203742528U CN201420060874.1U CN201420060874U CN203742528U CN 203742528 U CN203742528 U CN 203742528U CN 201420060874 U CN201420060874 U CN 201420060874U CN 203742528 U CN203742528 U CN 203742528U
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- CN
- China
- Prior art keywords
- locking cap
- end locking
- communicated
- annular space
- locking nut
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- Expired - Fee Related
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Abstract
The utility model discloses a hydraulic controlled type expansion packer. The hydraulic controlled type expansion packer comprises a body connected with an oil pipe. The body is sleeved with a rubber barrel assembly. The upper end and the lower end of the rubber barrel assembly are respectively provided with a locking nut. The upper locking nut and the lower locking nut are in sealing connection with the rubber barrel assembly respectively. The upper locking nut is connected with the body through an upper connector. The lower locking nut is connected with the body through a lower connector. The upper connector is provided with an upper overflowing channel. An upper annular space communicated with the upper overflowing channel is formed between the upper locking nut and the body. An annular gap communicated with the upper annular space is formed between the rubber barrel assembly and the body. The lower connector is provided with a lower overflowing channel. A lower annular space communicated with the lower overflowing channel is formed between the lower locking nut and the body and is communicated with the annular gap. The hydraulic controlled type expansion packer is high in beating and pressing efficiency, and setting and deblocking are convenient.
Description
Technical field
The utility model relates to a kind of downhole packer for oil extraction in oil field field, particularly relates to a kind of hydraulic control swell packers.
Background technology
Packer is a kind of downhole tool, at pit shaft, different oil reservoirs and different water layers being separated, and need to bear certain pressure reduction.Packer need to meet the requirement of oil production technology.Can descend pit shaft precalculated position, packing is tight, and need to have durability in down-hole, can trip out smoothly when needed again.
The operating principle of existing swell packers:
1) set: press from central tube liquid feeding, fluid power imports packing element inner chamber into through central tube fluid hole, force packing element to expand outwardly and be close on internal surface of sleeve pipe, Seal Oil cover annular space.
2) deblocking: lay down the hydraulic pressure in oil pipe, packing element reclaims deblocking.
The advantage that above-mentioned swell packers has is: simple in structure, well-flushing is convenient.Shortcoming is: 1) in the injecting process, cause oil pipe out of control and then cause release deblocking in runaway condition owing to stopping note or pressure oscillation meeting, stability is bad, even can affect normally carrying out of production; 2) suppressing in process, swell packers can only be suppressed from central tube one direction, and efficiency is low, and the activity duration is long, and then causes cost of production to increase.
Utility model content
The utility model provides a kind of hydraulic control swell packers for solving the technical problem existing in known technology, and it is high that this packer is suppressed efficiency, sets with deblocking all more convenient.
The technical scheme that the utility model is taked for the technical problem existing in solution known technology is: a kind of hydraulic control swell packers, comprise the body being connected with oil pipe, the outside of described body is set with packing element assembly, the two ends up and down of described packing element assembly are respectively provided with a locking cap, upper end locking cap is connected with described packing element component sealing respectively with lower end locking cap, described upper end locking cap is connected with described body by top connection, described lower end locking cap is connected with described body by lower contact, described top connection and described lower contact are tightly connected with described body respectively, described top connection and described upper end locking cap are tightly connected, described lower contact and described lower end locking cap are tightly connected, in described top connection, be provided with top flow channels, between described upper end locking cap and described body, be formed with the upper, annular space being communicated with described top flow channels, between described packing element assembly and described body, be formed with the annular gap being communicated with described upper, annular space, in described lower contact, be provided with bottom flow channels, between described lower end locking cap and described body, be formed with the lower annular space being communicated with described bottom flow channels, described lower annular space is communicated with described annular gap.
Described upper end locking cap and described lower end locking cap up-down structure symmetry, described top connection and described lower contact up-down structure symmetry.
Advantage and the good effect that the utlity model has are:
One) this packer up-down structure symmetry can be suppressed from top and bottom simultaneously, also can suppress from any one end, suppresses conveniently.
Two) this packer can be suppressed simultaneously in multiple series connection, suppresses efficiency high.
Three) setting with deblocking of this packer do not affected by its internal construction, increased well-flushing passage, can make well-flushing more thorough.
Four) when this removing seal for packer, only need be from a joint pressure release; And can adopt the mode deblocking of outer pressure release, deblocking is convenient.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure: 1, body; 2, top connection; 3, upper end locking cap; 4, sebific duct assembly; 5, lower end locking cap; 6, lower contact; 7, box cupling; 8, screw; 9,10, O RunddichtringO.
Detailed description of the invention
For further understanding summary of the invention of the present utility model, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1, a kind of hydraulic control swell packers, comprise the body 1 being connected by box cupling 7 with oil pipe, the outside of described body 1 is set with packing element assembly 4, the two ends up and down of described packing element assembly 4 are respectively provided with a locking cap, upper end locking cap 3 and lower end locking cap 4 are tightly connected with described packing element assembly 4 respectively, described upper end locking cap 3 is connected with described body 1 by top connection 2, described lower end locking cap 5 is connected with described body 1 by lower contact 6, described top connection 2 and described lower contact 6 are tightly connected with described body 1 respectively, between described body 1 and described top connection 2, be provided with O RunddichtringO 9, described top connection 2 is fixed on described body 1 by screw thread and screw 8.Lower contact 6 adopts identical structure to be connected with described body 1.Described top connection 2 is tightly connected by O RunddichtringO 10 with described upper end locking cap 3, and described lower contact 6 is tightly connected by O RunddichtringO with described lower end locking cap 5.In described top connection 1, be provided with top flow channels, between described upper end locking cap 3 and described body 1, be formed with the upper, annular space being communicated with described top flow channels, between described packing element assembly 4 and described body 1, be formed with the annular gap being communicated with described upper, annular space, in described lower contact 6, be provided with bottom flow channels, between described lower end locking cap 5 and described body 1, be formed with the lower annular space being communicated with described bottom flow channels, described lower annular space is communicated with described annular gap.
One of mode of packer setting: can in advance bottom flow channels be blocked.Squeeze into hydraulic oil from top flow channels, hydraulic oil enters upper, annular space, enters annular gap, makes the packing element on packing element assembly produce dilatancy, and sealing is fixed on sleeve pipe, and then realizes setting of packer.
In the present embodiment, for easy to use and making, described upper end locking cap 3 and described lower end locking cap 5 up-down structure symmetries, described top connection 2 and described lower contact 6 up-down structure symmetries.
Mounting method of the present utility model:
Due to the utility model up-down structure symmetry, and be tubular structure, so fitting operation is easy.First, at the outside of body 1 suit packing element assembly 4, then descend the each installation in two ends one locking cap thereon, more then a joint is respectively loaded onto at upper and lower two ends, and joint is fixed on body 1 by screw thread and screw.
Although by reference to the accompanying drawings preferred embodiment of the present utility model is described above; but the utility model is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not departing from the scope situation that the utility model aim and claim protect, can also make a lot of forms, within these all belong to protection domain of the present utility model.
Claims (2)
1. a hydraulic control swell packers, comprise the body being connected with oil pipe, the outside of described body is set with packing element assembly, it is characterized in that, the two ends up and down of described packing element assembly are respectively provided with a locking cap, upper end locking cap is connected with described packing element component sealing respectively with lower end locking cap, described upper end locking cap is connected with described body by top connection, described lower end locking cap is connected with described body by lower contact, described top connection and described lower contact are tightly connected with described body respectively, described top connection and described upper end locking cap are tightly connected, described lower contact and described lower end locking cap are tightly connected, in described top connection, be provided with top flow channels, between described upper end locking cap and described body, be formed with the upper, annular space being communicated with described top flow channels, between described packing element assembly and described body, be formed with the annular gap being communicated with described upper, annular space, in described lower contact, be provided with bottom flow channels, between described lower end locking cap and described body, be formed with the lower annular space being communicated with described bottom flow channels, described lower annular space is communicated with described annular gap.
2. hydraulic control swell packers according to claim 1, is characterized in that, described upper end locking cap and described lower end locking cap up-down structure symmetry, described top connection and described lower contact up-down structure symmetry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420060874.1U CN203742528U (en) | 2014-02-10 | 2014-02-10 | Hydraulic controlled type expansion packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420060874.1U CN203742528U (en) | 2014-02-10 | 2014-02-10 | Hydraulic controlled type expansion packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203742528U true CN203742528U (en) | 2014-07-30 |
Family
ID=51342345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420060874.1U Expired - Fee Related CN203742528U (en) | 2014-02-10 | 2014-02-10 | Hydraulic controlled type expansion packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203742528U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372135A (en) * | 2015-12-07 | 2016-03-02 | 中国石油天然气股份有限公司 | High-temperature packer rubber cylinder test detection tool |
| CN106812507A (en) * | 2015-11-30 | 2017-06-09 | 中国石油化工股份有限公司 | A kind of well pressure control hierarchy packing water injection string |
-
2014
- 2014-02-10 CN CN201420060874.1U patent/CN203742528U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812507A (en) * | 2015-11-30 | 2017-06-09 | 中国石油化工股份有限公司 | A kind of well pressure control hierarchy packing water injection string |
| CN106812507B (en) * | 2015-11-30 | 2018-12-28 | 中国石油化工股份有限公司 | A kind of well pressure control hierarchy packing water injection string |
| CN105372135A (en) * | 2015-12-07 | 2016-03-02 | 中国石油天然气股份有限公司 | High-temperature packer rubber cylinder test detection tool |
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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: 20140730 Termination date: 20150210 |
|
| EXPY | Termination of patent right or utility model |