CN202850935U - Y521 packer - Google Patents
Y521 packer Download PDFInfo
- Publication number
- CN202850935U CN202850935U CN 201220549792 CN201220549792U CN202850935U CN 202850935 U CN202850935 U CN 202850935U CN 201220549792 CN201220549792 CN 201220549792 CN 201220549792 U CN201220549792 U CN 201220549792U CN 202850935 U CN202850935 U CN 202850935U
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- CN
- China
- Prior art keywords
- packer
- pipe
- joint
- slips
- anchor body
- 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 - Lifetime
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Abstract
The utility model discloses a Y521 packer, which is characterized by comprising an upper joint, a center pipe, a hydraulic anchor body, an inner pipe, a sealed rubber pipe, a cone, a through hole, an outer pipe, slips, a return spring, a friction body, a reversing joint, a reversing pin, a lower joint and a pressure release valve, wherein the upper joint, the center pipe and the inner pipe are orderly connected with the lower joint, the hydraulic anchor body is sleeved on the center pipe, the outer pipe is sleeved on the inner pipe, the through hole is arranged on the lower portion of the inner pipe, the sealed rubber pipe, the cone, the slips, the friction body and the reversing joint are orderly sleeved on the outer pipe, a channel is arranged between the sealed rubber pipe and the inner pipe, the return spring is arranged on the slips, the reversing pin is connected with the reversing joint and the lower joint, and the pressure release valve which is used to balance inner and outer pressure difference is arranged between the center pipe and the hydraulic anchor body. The Y521 packer has the advantages that the Y521 packer can bear large lower pressure difference, is easy to deblock by upwardly lifting a tubular column to release pressure when deblocking, is not easy to seal at midway, is rapid in speed of construction, high in strength of extension and compression, reasonable in structure design and simple in operation, and is suitable for application and use on the scene.
Description
Technical field
The utility model relates to the downhole tool field of using on the oilfield, particularly a kind of Y521 packer.
Background technology
At present, in oil extraction and the workover technology, oil well delamination oil recovery, water blockoff, water filling, acidifying, pressure break, test the mechanical setting type packer that uses in the construction operation leakage and mainly adopt the Y211 packer.Y211 is the mono-layer tube structure, on put to put and set, one-way slip grappling form, it can not bear very high lower pressure reduction; Can't the venting packer fluid when deblocking, the deblocking load is high, and Ka Jing causes the accident easily, and also can be caused environment pollution by the liquid that packer is taken out of; The frequent appearance phenomenon that sets midway or do not set after the projected depth in construction, it is lower to be constructed into power.
The utility model content
The purpose of this utility model is in time pressure release in order to overcome existing packer and can not to bear lower pressure reduction, deblocking, the problem such as sets midway, and the spy provides a kind of Y521 packer.
The utility model provides a kind of Y521 packer, it is characterized in that: described Y521 packer comprises, top connection 1, central tube 2, hydraulic anchor body 3, inner tube 4, cartridge 5, cone 6, through hole 7, outer tube 8, slips 9, back-moving spring 10, friction piece 11, commutation joint 12, commutation pin 13, lower contact 14, relief valve 15;
Wherein: top connection 1, central tube 2, inner tube 4 are connected successively with lower contact 14, at central tube 2 covers hydraulic anchor body 3 is arranged, at inner tube 4 covers outer tube 8 is arranged, through hole 7 is arranged at the bottom, cover has cartridge 5, cone 6, slips 9, friction piece 11 successively on outer tube 8, commutation joint 12, in cartridge 5 and 8 of inner tubes passage is arranged, at slips 9 back-moving spring 10 is housed, commutation pin 13 connects commutation joint 12 and lower contact 14, relief valve 15 is installed in the position of cartridge more than 5, be positioned at the top of hydraulic anchor body 3 or below.
Described relief valve 15 comprises piston 1501, pressure release valve gap 1502, O-ring seal 1503, pressure release valve seat 1504; Piston 1501 is enclosed within pressure release valve gap 1502 outsides, and O-ring seal 1503 is installed in pressure release valve seat 1504 inside, not only plays the pressure release effect but also sealing function is arranged.
Described commutation joint 12 interior bands are useful on the helicla flute of chucking commutation pin 13.
The upper lifting pipe post is opened relief valve 15 when removing seal for packer, the liquid on packer top releases by the circular passage between relief valve 15, inner tube 4 and the outer tube 8, alleviate the deblocking load of packer, release the pressure of hydraulic anchor inside, the anchor fluke of hydraulic anchor body 3 is regained under the effect of back-moving spring 10, make the easy deblocking of packer, transfer the problem that sets in the process for fear of packer, the mode that adopts rotation to set.
Advantage of the present utility model:
Y521 packer described in the utility model can bear larger lower pressure reduction, upper lifting pipe post pressure release during deblocking, and deblocking is difficult for setting midway easily, and speed of application is fast, and tensile strength is high, pressure-bearing is high, reasonable in design, simple to operate, promote the use of at suitable scene.
Description of drawings
Below in conjunction with drawings and the embodiments the utility model is described in further detail:
Fig. 1 is Y521 packer theory structure schematic diagram.
The specific embodiment
Embodiment 1
Present embodiment provides a kind of Y521 packer, it is characterized in that: described Y521 packer comprises, top connection 1, central tube 2, hydraulic anchor body 3, inner tube 4, cartridge 5, cone 6, through hole 7, outer tube 8, slips 9, back-moving spring 10, friction piece 11, commutation joint 12, commutation pin 13, lower contact 14, relief valve 15;
Wherein: top connection 1, central tube 2, inner tube 4 are connected successively with lower contact 14, at central tube 2 covers hydraulic anchor body 3 is arranged, at inner tube 4 covers outer tube 8 is arranged, through hole 7 is arranged at the bottom, cover has cartridge 5, cone 6, slips 9, friction piece 11 successively on outer tube 8, commutation joint 12, in cartridge 5 and 8 of inner tubes passage is arranged, at slips 9 back-moving spring 10 is housed, commutation pin 13 connects commutation joint 12 and lower contact 14, relief valve 15 is installed in the position of cartridge more than 5, be positioned at hydraulic anchor body 3 below.
Described relief valve 15 comprises piston 1501, pressure release valve gap 1502, O-ring seal 1503, pressure release valve seat 1504; Piston 1501 is enclosed within pressure release valve gap 1502 outsides, and O-ring seal 1503 is installed in pressure release valve seat 1504 inside, not only plays the pressure release effect but also sealing function is arranged.
Described commutation joint 12 interior bands are useful on the helicla flute of chucking commutation pin 13.
The upper lifting pipe post is opened relief valve 15 when removing seal for packer, the liquid on packer top releases by the circular passage between relief valve 15, inner tube 4 and the outer tube 8, alleviate the deblocking load of packer, release the pressure of hydraulic anchor inside, the anchor fluke of hydraulic anchor body 3 is regained under the effect of back-moving spring 10, make the easy deblocking of packer, transfer the problem that sets in the process for fear of packer, the mode that adopts rotation to set.
Set: packer is by behind the projected depth G.I.H, on put forward---forward---and transfer tubing string, at this moment the commutation pin in the packer lower contact will with the commutation splice failure, when transferring tubing string, it is motionless that slips, friction piece, commutation joint keep under the effect of brake pad and sleeve friction power, hydraulic anchor body, central tube and relief valve together descending promotion cone strut slips packer are stuck on the sleeve pipe, relief valve cuts out simultaneously, and top tubing string weight compression seal packing element makes its external diameter become the sealing of senior general's oil sets annular space.Behind the packer sealing, when pressure reduction was higher than upper pressure reduction under device, the anchor fluke on the hydraulic anchor body will be released by bottom pressure and packer is anchored on the sleeve pipe, made packer keep maintaining static under higher lower differential pressure action.
Deblocking: the upper lifting pipe post is opened relief valve, and the liquid on packer top releases by the circular passage between relief valve, the inner and outer tubes, alleviates the deblocking load of packer, releases the pressure of hydraulic anchor body inside.Continue the upper lifting pipe post, hydraulic anchor body, central tube, and relief valve up together, packing element restores, cone proposes in slips, packer is by deblocking.
Embodiment 2
The difference of the structure of present embodiment and embodiment 1 is that relief valve 15 is installed in the position of cartridge more than 5, be positioned at hydraulic anchor body 3 above.
Claims (3)
1. Y521 packer, it is characterized in that: described Y521 packer comprises, top connection (1), central tube (2), hydraulic anchor body (3), inner tube (4), cartridge (5), cone (6), through hole (7), outer tube (8), slips (9), back-moving spring (10), friction piece (11), commutation joint (12), commutation pin (13), lower contact (14), relief valve (15);
Wherein: top connection (1), central tube (2), inner tube (4) is connected successively with lower contact (14), at central tube (2) cover hydraulic anchor body (3) is arranged, at inner tube (4) cover outer tube (8) is arranged, through hole (7) is arranged at the bottom, cover has cartridge (5) successively on outer tube (8), cone (6), slips (9), friction piece (11), commutation joint (12), between cartridge (5) and inner tube (8), passage is arranged, at slips (9) back-moving spring (10) is housed, commutation pin (13) connects commutation joint (12) and lower contact (14), relief valve (15) is installed in the above position of cartridge (5), be positioned at the top of hydraulic anchor body (3) or below.
2. according to Y521 packer claimed in claim 1, it is characterized in that: described relief valve (15) comprises piston (1501), pressure release valve gap (1502), O-ring seal (1503), pressure release valve seat (1504); Piston (1501) is enclosed within pressure release valve gap (1502) outside, and O-ring seal (1503) is installed in pressure release valve seat (1504) inside.
3. according to Y521 packer claimed in claim 1, it is characterized in that: band is useful on the helicla flute of chucking commutation pin (13) in the described commutation joint (12).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 201220549792 CN202850935U (en) | 2012-10-25 | 2012-10-25 | Y521 packer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 201220549792 CN202850935U (en) | 2012-10-25 | 2012-10-25 | Y521 packer |
Publications (1)
Publication Number | Publication Date |
---|---|
CN202850935U true CN202850935U (en) | 2013-04-03 |
Family
ID=47982145
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 201220549792 Expired - Lifetime CN202850935U (en) | 2012-10-25 | 2012-10-25 | Y521 packer |
Country Status (1)
Country | Link |
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CN (1) | CN202850935U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103573207A (en) * | 2013-11-19 | 2014-02-12 | 王柏林 | Injection-compression packer |
CN114412409A (en) * | 2022-02-16 | 2022-04-29 | 成都德维石油技术服务有限责任公司 | Mechanical packer |
-
2012
- 2012-10-25 CN CN 201220549792 patent/CN202850935U/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103573207A (en) * | 2013-11-19 | 2014-02-12 | 王柏林 | Injection-compression packer |
CN114412409A (en) * | 2022-02-16 | 2022-04-29 | 成都德维石油技术服务有限责任公司 | Mechanical packer |
CN114412409B (en) * | 2022-02-16 | 2023-08-08 | 成都德维石油技术服务有限责任公司 | Mechanical packer |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CX01 | Expiry of patent term |
Granted publication date: 20130403 |
|
CX01 | Expiry of patent term |