CN202000958U - Compression washable well packer - Google Patents
Compression washable well packer Download PDFInfo
- Publication number
- CN202000958U CN202000958U CN2011200145587U CN201120014558U CN202000958U CN 202000958 U CN202000958 U CN 202000958U CN 2011200145587 U CN2011200145587 U CN 2011200145587U CN 201120014558 U CN201120014558 U CN 201120014558U CN 202000958 U CN202000958 U CN 202000958U
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- CN
- China
- Prior art keywords
- central tube
- well
- casing
- last
- inner central
- 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 compression washable well packer and solves the problems of small well cleanup open area and complex release process of the conventional washable well packer. The compression washable well packer is characterized in that a water passing passage is formed by a ring gap between an inner center pipe and an outer center pipe; the well cleanup open area is increased; the well cleanup effect is better; and the compression washable well packer can be released by a fluid column pressure and a well head pressure through lifting up the packer and a pump truck is not used to pressurize, so that the workload is reduced and the process is simple.
Description
Affiliated technical field
The utility model relates to a kind of oilfield downhole operation instrument, belongs to compression washing well packer.
Background technology
The kind of the existing washing well packer in oil field is a lot, and ubiquitous problem is that the flow channels of well-flushing is less, and well washing effect is undesirable, occurs the halfway phenomenon of well-flushing sometimes.Especially when discharging, generally all needing to suppress with pump truck could deblocking packer, have in addition need to throw plug and the packer deblocking could be discharged complex procedures.
Summary of the invention
The purpose of this utility model is exactly in order to overcome above-mentioned the deficiencies in the prior art, and provide a kind of well-flushing area of passage greatly, can suppress without pump truck, can carry the compression washing well packer of release certainly.
The technical scheme that the utility model technical solution problem is adopted is: this kind compression washing well packer, form by top connection, last casing, inner central tube, exterior central tube, lower contact and following casing, top connection outreaches the last casing that has outer inlet opening with the inline inner central tube that has three layers of lead channel of screw thread; The exterior central tube of inlet opening in the band is housed between inner central tube and the last casing, and the annular space between inner central tube and the exterior central tube constituted aquaporin; Spring base, spring, well-flushing piston and the last apical ring of band flowing hole are housed between exterior central tube and the last casing, and last apical ring is gone up the casing end to be threaded; Be with upper and lower packing element, spacer ring, middle packing element and following apical ring on the exterior central tube of last apical ring lower end, following apical ring has the well-flushing cover of regulating cap to be threaded, and has weep hole on the well-flushing cover sidewall; On the inner central tube of well-flushing cover lower end, be with upper piston, upper piston has the following casing of jump ring groove with the inwall that is threaded, in inner central tube and following casing annular space, clip spring seat, jump ring, deblocking pin, pressure cap and lower piston are housed successively, an offset nail is equipped with the lower contact that is threaded in the inner central tube lower end between lower contact and the following casing.
The beneficial effects of the utility model are: because the annular space between the inside and outside central tube constituted aquaporin, the well-flushing area of passage increases, and well washing effect is better.Since by head of liquid and well head pressure, on carry packer and just it can be discharged, reach pressure without pump truck, reduced workload, operation is simple.Because lower piston is two bodies with following casing, even the air chamber feed liquor is thrown and extremely chewed also expansible sealing tube, the operation of need not doing over again especially is fit to not open flow operation of well head.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Accompanying drawing 1 structural representation of the present utility model.
Among Fig. 1, casing is 2. gone up in 1. top connection, 3. spring base, 4. inner central tube, 5. exterior central tube, 6. the well-flushing piston is 7. gone up apical ring, 8. upper and lower packing element, 9. spacer ring, 10. middle packing element, 11. times apical rings, 12. regulate cap, 13. well-flushing covers, 14. upper pistons, 15. clip spring seat, 16. jump rings, 17. deblocking shear pins, 18. pressure caps, 19. times casings, 20. lower piston, 21. lower contacts, 22. set shear pin, 23. lead channel, 24. jump ring grooves, 25. weep hole, 26. cross aquaporin, 27. outer inlet openings, 28. interior inlet openings.
The specific embodiment
By shown in Figure 1, this washing well packer, be made up of top connection 1, last casing 2, inner central tube 4, exterior central tube 5, lower contact 21 and following casing 19, top connection 1 outreaches the last casing 2 that has outer inlet opening 27 with the inline inner central tube 4 that has three layers of lead channel 23 of screw thread; The annular space that is equipped with between inner central tube 4 and the last casing 2 between exterior central tube 5, inner central tube 4 and the exterior central tube 5 of being with interior inlet opening 28 constituted aquaporin 26; Spring base 3, spring, well-flushing piston 6 and the last apical ring 7 of band flowing hole are housed between exterior central tube 5 and the last casing 2, and last apical ring 7 is gone up casing 2 ends to be threaded; Be with upper and lower packing element 8, spacer ring 9, middle packing element 10 and following apical ring 11 on last apical ring 7 lower end exterior central tubes 5, following apical ring 11 has the well-flushing cover 13 of regulating cap 12 to be threaded, and well-flushing overlaps and has weep hole 25 on 13 sidewalls; Overlap at well-flushing on the inner central tube 4 of 13 lower ends and be with upper piston 14, upper piston 14 has the following casing 19 of jump ring groove 24 with the inwall that is threaded, in inner central tube 4 and following casing 19 annular spaces, clip spring seat 15, jump ring 16, deblocking pin 17, pressure cap 18 and lower piston 20 are housed successively, an offset nail 22 is equipped with the lower contact 21 that is threaded in inner central tube 4 lower ends between lower contact 21 and the following casing 19.
When expanding envelope, liquid is up by lead channel 23 feed liquors promotion upper piston 14 and lower piston 20, lower piston 20 compressed air cells, head of liquid adds the well head certain pressure and just seat offset nail 22 can be cut off, last apical ring 7 compression packing elements, with casing 19 is up at present, the jump ring groove 24 on the following casing 19 is stuck on the jump ring 16, do not have when pressure, packing element does not shrink.Behind the air chamber feed liquor, input is extremely chewed and is built the pressure, and it is up that liquid compression upper piston 14 promotes packing elements, packer is expanded seal.
During well-flushing, flushing fluid enters from the outer inlet opening 27 on the last casing 2, backs down well-flushing piston 6, passes through interior inlet opening 28, crosses aquaporin 26, after weep hole 25 flows out, finishes clean-out service.
During lift pipe string, packing element makes inner central tube 4 drive jump ring 16 relative moving upward with the frictional force of sleeve pipe, when reaching certain value, deblocking pin 17 is cut off, and jump ring 16 is stayed on the jump ring groove 24, and packing element shrinks and sets back, thereby trip out full well casing post, packer is realized from proposing release.
Claims (1)
1. compression washing well packer, form by top connection (1), last casing (2), inner central tube (4), exterior central tube (5), lower contact (21) and following casing (19), it is characterized in that: top connection (1) outreaches the last casing (2) that has outer inlet opening (27) with the inline inner central tube (4) that has three layers of lead channel (23) of screw thread; The annular space that is equipped with between inner central tube (4) and the last casing (2) between exterior central tube (5), inner central tube (4) and the exterior central tube (5) of being with interior inlet opening (28) constituted aquaporin (26); Spring base (3), spring, well-flushing piston (6) and the last apical ring (7) of band flowing hole are housed between exterior central tube (5) and the last casing (2), and last apical ring (7) is gone up casing (2) end to be threaded; On last apical ring (7) lower end exterior central tube (5), be with upper and lower packing element (8), spacer ring (9), middle packing element (10) and following apical ring (11), following apical ring (11) has the well-flushing cover (13) of regulating cap (12) to be threaded, have weep hole (25) on well-flushing cover (13) sidewall; On the inner central tube (4) of well-flushing cover (13) lower end, be with upper piston (14), upper piston (14) has the following casing (19) of jump ring groove (24) with the inwall that is threaded, in inner central tube (4) and following casing (19) annular space, clip spring seat (15), jump ring (16), deblocking pin (17), pressure cap (18) and lower piston (20) are housed successively, an offset nail (22) is equipped with the lower contact that is threaded (21) in inner central tube (4) lower end between lower contact (21) and the following casing (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200145587U CN202000958U (en) | 2011-01-18 | 2011-01-18 | Compression washable well packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200145587U CN202000958U (en) | 2011-01-18 | 2011-01-18 | Compression washable well packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202000958U true CN202000958U (en) | 2011-10-05 |
Family
ID=44703703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200145587U Expired - Fee Related CN202000958U (en) | 2011-01-18 | 2011-01-18 | Compression washable well packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202000958U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929563A (en) * | 2015-05-27 | 2015-09-23 | 中国石油天然气股份有限公司 | Water injection packer |
-
2011
- 2011-01-18 CN CN2011200145587U patent/CN202000958U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929563A (en) * | 2015-05-27 | 2015-09-23 | 中国石油天然气股份有限公司 | Water injection packer |
| CN104929563B (en) * | 2015-05-27 | 2017-10-17 | 中国石油天然气股份有限公司 | Water injection packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Compression washable well packer Effective date of registration: 20121123 Granted publication date: 20111005 Pledgee: Keli technology investment Company limited by guarantee in Heilongjiang Province Pledgor: Daqing Aerospace Sunvalor New Technology Industrial Co., Ltd. Registration number: 2012230000021 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20131028 Granted publication date: 20111005 Pledgee: Keli technology investment Company limited by guarantee in Heilongjiang Province Pledgor: Daqing Aerospace Sunvalor New Technology Industrial Co., Ltd. Registration number: 2012230000021 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20170118 |