CN201358749Y - Straddle-packer - Google Patents
Straddle-packer Download PDFInfo
- Publication number
- CN201358749Y CN201358749Y CNU2009200227221U CN200920022722U CN201358749Y CN 201358749 Y CN201358749 Y CN 201358749Y CN U2009200227221 U CNU2009200227221 U CN U2009200227221U CN 200920022722 U CN200920022722 U CN 200920022722U CN 201358749 Y CN201358749 Y CN 201358749Y
- Authority
- CN
- China
- Prior art keywords
- pressure transmission
- central tube
- slip cap
- packer
- pressure transmitting
- 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
A straddle-packer comprises a collar, a lift sub, an upper pressure transmitting joint, a connecting sleeve, a sealing piece, a central tube, a slip cap, and a lower pressure transmitting joint. The straddle-packer is characterized in that the upper end of the central tube is connected with the upper pressure transmitting joint, the lift sub and the collar sequentially, and the lower end thereof is connected with the lower pressure transmitting joint and the lift sub sequentially; the connecting sleeve, the sealing piece and the slip cap are connected to the outside of the central tube and the lower part of the upper pressure transmitting joint sequentially; and the lower end of the slip cap is mounted in the lower pressure transmitting joint. The straddle-packer adopts the sealing piece which has a pressure transmitting hole formed thereon and a sliding end, so as to have the advantages of safe and reliable sealing and releasing, capability of conducting layer change and fracturing treatment to 2 to 3 layers through a tube pillar at a time, stable start pressure difference, high work pressure difference, high sealing and pressure transmitting efficiency, good quality for being matched with the tube pillar in horizontal well fracturing technology, and the like. The straddle-packer is widely applied to fracturing technology in petroleum exploitation.
Description
One, technical field
The utility model relates to packer, particularly a kind of striding every the formula packer.
Two, background technology
Existing a kind of pressure break packer, mainly form by parts such as seal cones, central tube, exterior central tube, slip sleeve, slips, lock ball seat, centralizer bodies, for effective exploitation of LOW PERMEABILITY RESERVOIR contributes, but it exists following shortcoming or deficiency simultaneously: 1. can only use in the peupendicular hole fracturing technology, and can not be used for fractured horizontal well technology, especially can not in the horizontal well in segments fracturing technology, use; 2. can not with the supporting application of horizontal well in segments fracturing technology tubing string; 3. setting has certain requirement to hole deviation, so sets dangerous in the horizontal well.
Three, summary of the invention
The purpose of this utility model provides a kind of improvement and strides every the formula packer, adopt an end to fix, the structure of seal that one end slides and two cover pressure transmission mechanisms, the shortcoming or the deficiency that had both overcome effectively or avoided existing in the above-mentioned prior art, but the lamination that changes that fixed tubular column again, tubing string carry out layer 2-3 splits construction.
Described in the utility model striding every the formula packer, comprise box cupling, lifting sub, upload crimp head, adapter sleeve, seal, central tube, slip cap, pressure transmission joint down, it is characterized in that described central tube upper end in turn with upload crimp head, lifting sub and box cupling and be connected, the lower end is connected with lifting sub with following pressure transmission joint in turn, central tube is outer, upload under the crimp head and be connected with adapter sleeve, seal and slip cap in turn, and the slip cap lower end is installed on down in the pressure transmission joint.
Wherein, the described crimp head of uploading is provided with at least one axis pressure transmission hole.Described pressure transmission joint down is provided with at least one axis pressure transmission hole.Be provided with the annular pressure transmission liquid fluid space that is connected with the pressure transmission hole of uploading joint between described adapter sleeve and the central tube.Be provided with the annular pressure transmission liquid fluid space that is connected with the pressure transmission hole of following pressure transmission joint between described slip cap and the central tube.Described slip cap lower external face is dynamically connected with following pressure transmission joint upper inside surface sealed sliding.
Compared with the prior art the utility model has the following advantages:
1, adopt an end to slide, the seal configuration that an end is fixing, it is reliable to set deblocking, safety;
2, the interchangeable lamination of tubing string splits the processing layer 2-3;
3, the inside and outside two cover pressure transmission systems of employing, it is stable to start pressure reduction, and the operting differential pressure height sets reliably, sealing pressure transmission efficient height;
4, good with fractured horizontal well process pipe string matching.
Four, description of drawings
Accompanying drawing is a kind of structural representation of the present utility model
Four, the specific embodiment
Consult accompanying drawing, a kind of striding every the formula packer comprises box cupling, lifting sub, uploads crimp head, adapter sleeve, seal, central tube, slip cap, pressure transmission joint down.Central tube 6 upper ends in turn with upload crimp head 3, lifting sub 2 and box cupling 1 and be connected, the lower end is connected with lifting sub 2 with following pressure transmission joint 8 in turn, central tube 6 is outer, upload crimp head is connected with adapter sleeve 4, seal 5 and slip cap 7 for 3 times in turn, and slip cap 7 lower ends are installed on down in the pressure transmission joint 8.
Upload crimp head 3 and be provided with at least one axis pressure transmission hole 9.Following pressure transmission joint 8 is provided with at least one axis pressure transmission hole 9.Be provided with the annular pressure transmission liquid fluid space that is connected with the pressure transmission hole 9 of uploading crimp head 3 between adapter sleeve 4 and the central tube 6.Be provided with the annular pressure transmission liquid fluid space that is connected with the pressure transmission hole 9 of following pressure transmission joint 8 between slip cap 7 and the central tube 6.Slip cap 7 lower external face are dynamically connected with following pressure transmission joint 8 upper inside surface sealed sliding.
Claims (6)
1, a kind of striding every the formula packer, comprise box cupling, lifting sub, upload crimp head, adapter sleeve, seal, central tube, slip cap, pressure transmission joint down, it is characterized in that described central tube upper end in turn with upload crimp head, lifting sub and box cupling and be connected, the lower end is connected with lifting sub with following pressure transmission joint in turn, central tube is outer, upload under the crimp head and be connected with adapter sleeve, seal and slip cap in turn, and the slip cap lower end is installed on down in the pressure transmission joint.
2, according to claim 1 striding every the formula packer is characterized in that the described crimp head of uploading is provided with at least one axis pressure transmission hole.
3, according to claim 1 striding every the formula packer is characterized in that described pressure transmission joint down is provided with at least one axis pressure transmission hole.
4, according to claim 1 striding every the formula packer is characterized in that being provided with the annular pressure transmission liquid fluid space that is connected with the pressure transmission hole of uploading joint between described adapter sleeve and the central tube.
5, according to claim 1 striding every the formula packer is characterized in that being provided with the annular pressure transmission liquid fluid space that is connected with the pressure transmission hole of following pressure transmission joint between described slip cap and the central tube.
6, stride according to claim 1 or 5 every the formula packer, it is characterized in that described slip cap lower external face and following pressure transmission joint upper inside surface sealed sliding are dynamically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200227221U CN201358749Y (en) | 2009-02-27 | 2009-02-27 | Straddle-packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200227221U CN201358749Y (en) | 2009-02-27 | 2009-02-27 | Straddle-packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201358749Y true CN201358749Y (en) | 2009-12-09 |
Family
ID=41424511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200227221U Expired - Fee Related CN201358749Y (en) | 2009-02-27 | 2009-02-27 | Straddle-packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201358749Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110331969A (en) * | 2019-06-14 | 2019-10-15 | 弗润联科(北京)石油科技有限公司 | Across every formula Oil testing and refracturing tool system |
-
2009
- 2009-02-27 CN CNU2009200227221U patent/CN201358749Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110331969A (en) * | 2019-06-14 | 2019-10-15 | 弗润联科(北京)石油科技有限公司 | Across every formula Oil testing and refracturing tool system |
| CN110331969B (en) * | 2019-06-14 | 2021-04-20 | 弗润联科(北京)石油科技有限公司 | Cross-isolation type oil testing and repeated fracturing tool system |
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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: 20091209 Termination date: 20100227 |