CN202990957U - Plug-in type step-by-step releasable packer - Google Patents
Plug-in type step-by-step releasable packer Download PDFInfo
- Publication number
- CN202990957U CN202990957U CN 201320008549 CN201320008549U CN202990957U CN 202990957 U CN202990957 U CN 202990957U CN 201320008549 CN201320008549 CN 201320008549 CN 201320008549 U CN201320008549 U CN 201320008549U CN 202990957 U CN202990957 U CN 202990957U
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- plug
- central tube
- top connection
- wall
- urceolus
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Abstract
The utility model relates to a plug-in type step-by-step releasable packer. The packer comprises an upper joint, wherein the outer wall of the lower end of the upper joint is provided with an annular shoulder; the lower end of the upper joint is internally provided with a central tube upper joint; the upper joint and the central tube upper joint are connected through a releasing pin; the lower end of the central tube upper joint is in internal thread connection with a central tube; the outer wall of the upper joint is connected to an upper outer barrel through a setting pin; the upper end of the upper outer barrel is internally provided with an annular boss; the lower end of the upper outer barrel is in thread connection with a plug; the lower end of the plug is a conical surface; the plug is sleeved on the outer wall of the central tube; the central tube is provided with a liquid inlet hole; a rubber tube is sleeved on the outer wall of the central tube; the inner wall of the rubber tube is provided with an elastic support body; the lower end of the elastic support body is in thread connection with a lower outer barrel; the lower outer barrel is in internal thread connection with a lower joint; and the lower end of the central tube is in external thread connection with the lower joint. The packer is an oil-water well tool which has the advantages of low cost, high efficiency, multiple functions, innovativeness and fully-guaranteed high pressure resistance and high temperature resistance.
Description
Technical field
The utility model relates to downhole tool used in oil field layered oil recovery, seperated layer water injection, separate zone stimulation field, is a kind of plug-in type gradually deblocking packer.
Background technology
In the field produces field, separate zone stimulation, seperated layer water injection, oil production by layer, well-flushing are the technical measures of commonly using, and in these several operation process, packer is the important tool of laminated distributor under well oil recovery, seperated layer water injection, separate zone stimulation.Cost of production, success rate, job scheduling, especially job success ratio that it directly affects operation are of greatest concern.After during use, it being connected with oil pipe, according to the desired depth G.I.H, under the effect of highly pressurised liquid, packer set reaches the packing purpose of oil reservoir up and down.
As seal, the performance of rubber is the key of packer quality to the oil-water well packer with rubber, and due to the circumstance complication of oil-water well, the performance of rubber comprises that mechanical performance, mechanical property, chemical property must meet the demands.The concrete technical indicator relevant with the oil-water well environment has hot strength, oil resistant, corrosion-resistant, high temperature resistant, high pressure resistant etc.The above various performances of rubber satisfy the particularly requirement of the effect of deep-well of oil-water well, it is puzzlement oil field scientific worker's a difficult problem always, the scientific worker has even used the expensive rubber such as hydrogenated nitrile-butadiene rubber, fluorosioloxane rubber, even so still can not well address this problem, for example the high temperature resistant deficiency of high pressure of holding of rubber causes breaking, and makes whole layering sealing operation failure.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of plug-in type gradually deblocking packer, the high pressure resistance to elevated temperatures of holding of this packer has obtained sufficient assurance, is the oil-water well operation instrument of a kind of low cost, high efficiency, multi-functional, novelty.
the technical solution of the utility model is: this plug-in type gradually deblocking packer comprises top connection and lower contact, described top connection lower end outer wall is provided with annular shoulder, be provided with the central tube top connection in the top connection lower end, top connection is connected by the deblocking pin with the central tube top connection, central tube top connection lower end internal thread connects central tube, the top connection outer wall is connected with upper urceolus by setting pin, upper urceolus is provided with annular boss in the upper end, upper urceolus lower end snail line is connected with plug, the plug lower end is the conical surface, the plug upper surface is tactile mutually with top connection and central tube top connection lower surface, plug cover is at the central tube outer wall, central tube corresponding to plug upper surface has inlet opening, the central tube outer wall cover of plug below has packing element, the tapering of plug upper end extend in the upper end of packing element, the packing element inwall is established elastic support, elastic support and packing element are cast for one, the elastic support lower end lower urceolus that is threaded, lower urceolus internal thread connects lower contact, central tube lower end external screw thread connects lower contact.
The utlity model has following beneficial effect: the present invention is applicable to oilfield oil well separate stratum fracfturing, seperated layer water injection, oil production by layer, acidifying sealing tool used, be different from former hydraulic dilatation, compressive strain expansion seal pack device, wedging crush seal sealing effectiveness is better, and is not high to the performance requirement of rubber.And existing hydraulic dilatation, compressive strain expansion often break due to distortion when being sealed in packing element and bearing for a long time high pressure, high temperature, cause sealing unsuccessfully, and be especially when deep well fracturing, very high to the performance requirement of rubber.The size of setting force of the present invention is definite by setting the pin cross-sectional area, and the pressure-bearing size is determined by the outside dimension of plug and the wall thickness of packing element.Design letter and easily go, and existing packer all relies on the performance of rubber, is difficult for grasp.Job success ratio of the present invention reaches 99%, has avoided the work accident generation, the loss of work is dropped to minimum.The present invention is reusable more than 20 times, and former packer can only be reused 6 times, in economical with materials, greatly reduce cost of production.
Description of drawings:
Accompanying drawing 1 is structural representation of the present utility model.
1-plug in figure, 2-central tube, 3-top connection, the upper urceolus of 4-, urceolus under 5-, the 6-lower contact, the top connection of 7-central tube, 8-deblocking pin, the 9-packing element, 10-sets pin, the 11-sealing ring, 12-inlet opening, 13-annular shoulder, 14-annular boss, 15-elastic support.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, this plug-in type gradually deblocking packer, comprise top connection 3 and lower contact 6, top connection 3 lower end outer walls are provided with annular shoulder 13, top connection is provided with central tube top connection 7 in 3 lower ends, top connection 3 is connected by deblocking pin 8 with central tube top connection 7, central tube top connection 7 lower end internal threads connect central tube 2, top connection 3 outer walls are connected with upper urceolus 4 by setting pin 10, upper urceolus is provided with annular boss 14 in 4 upper ends, when setting, the upper descending annular boss 14 of urceolus 4 blocks mutually with annular shoulder 13, sets and completes.upper urceolus 4 lower end screw threads are connected with plug 1, plug 1 lower end is the conical surface, plug 1 upper surface is tactile mutually with top connection 3 and central tube top connection 7 lower surfaces, plug 1 is enclosed within central tube 2 outer walls, central tube 2 corresponding to plug 1 upper surface has inlet opening 12, the central tube 2 outer wall covers of plug 1 below have packing element 9, the tapering of plug 1 upper end extend in the upper end of packing element 9, when setting, under the effect of hydraulic pressure, the tapering of plug 1 upper end continues to stretch in packing element 9, until with the complete rising of packing element 9, packing element 9 inwalls are attached to internal surface of sleeve pipe and realize setting, be solid in packing element 9, bearing capacity is strong, can do not crushed because of the bearing capacity deficiency and be caused setting failure, packing element 9 inwalls are established elastic support 15, elastic support 15 is cast for one with packing element 9, elastic support 15 lower ends are tubular, the part that is cast for one with packing element 9 is the strip at interval.The elastic support 15 lower ends lower urceolus 5 that is threaded, lower urceolus 5 internal threads connect lower contacts 6, and central tube 2 lower end external screw threads connect lower contacts 6.
Between lower contact 6 and lower urceolus 5, between upper urceolus 4 and annular shoulder 13, be respectively equipped with sealing ring 11 between top connection 3 and central tube top connection 7.
When setting: the liquid in central tube 2 enters into the top of plug 1 from inlet opening 12, when hydraulic pressure reaches certain numerical value (size of pressure is determined by design), plug 1 drives with its upper urceolus 4 with screwed connection and moves downwards, cut off and set pin 10, plug 1 inserts packing element 9, and the outside spreading of packing element 9 is with the sleeve pipe close contact, thereby sealed the oil jacket space, the size of sealing load is realized by external diameter, the design of packing element external diameter of plug.
Deblocking: method 1, on carry oil pipe, cut off deblocking pin 8, top connection 3 drives on upper urceolus 4 and plug 1 and moves, and plug 1 is extracted from packing element 9, packing element 9 restores to the original state under the effect of Elastic Steel and self restoring force, realizes deblocking.Method 2, pressurize in sleeve pipe, pressure-acting is on the shoulder of plug 1 outer wall, and when reaching certain pressure, plug 1 withdraws from from packing element 9, gets back to original position, realizes deblocking.
Well-flushing: packing element 9 solutions are honored as a queen, and the oil jacket space is in sealing, at this moment from oil jacket space water filling, by the bottom anti-you, return from oil pipe, realize well-flushing.
Claims (3)
1. plug-in type gradually deblocking packer, comprise top connection (3) and lower contact (6), it is characterized in that: described top connection (3) lower end outer wall is provided with annular shoulder (13), top connection (3) is provided with central tube top connection (7) in the lower end, top connection (3) is connected by deblocking pin (8) with central tube top connection (7), central tube top connection (7) lower end internal thread connects central tube (2), top connection (3) outer wall is connected with upper urceolus (4) by setting pin (10), upper urceolus (4) is provided with annular boss (14) in the upper end, upper urceolus (4) lower end screw thread is connected with plug (1), plug (1) lower end is the conical surface, plug (1) upper surface is tactile mutually with top connection (3) and central tube top connection (7) lower surface, plug (1) is enclosed within central tube (2) outer wall, central tube (2) corresponding to plug (1) upper surface has inlet opening (12), central tube (2) the outer wall cover of plug (1) below has packing element (9), the tapering of plug (1) upper end extend in the upper end of packing element (9), packing element (9) inwall is established elastic support (15), elastic support (15) is cast for one with packing element (9), elastic support (15) the lower end lower urceolus (5) that is threaded, lower urceolus (5) internal thread connects lower contact (6), central tube (2) lower end external screw thread connects lower contact (6).
2. plug-in type gradually deblocking packer according to claim 1 is characterized in that: between lower contact (6) and lower urceolus (5), between upper urceolus (4) and annular shoulder (13), be respectively equipped with sealing ring (11) between top connection (3) and central tube top connection (7).
3. plug-in type gradually deblocking packer according to claim 1 is characterized in that: the part that elastic support (15) lower end is tubular, be cast for one with packing element (9) is the strip at interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320008549 CN202990957U (en) | 2013-01-08 | 2013-01-08 | Plug-in type step-by-step releasable packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320008549 CN202990957U (en) | 2013-01-08 | 2013-01-08 | Plug-in type step-by-step releasable packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202990957U true CN202990957U (en) | 2013-06-12 |
Family
ID=48562148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320008549 Expired - Fee Related CN202990957U (en) | 2013-01-08 | 2013-01-08 | Plug-in type step-by-step releasable packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202990957U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075126A (en) * | 2013-01-08 | 2013-05-01 | 汤志忠 | Wedge type reusing setting and deblocking packer |
| CN103306635A (en) * | 2013-06-28 | 2013-09-18 | 中国石油天然气股份有限公司 | Steel skeleton rubber tube |
-
2013
- 2013-01-08 CN CN 201320008549 patent/CN202990957U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075126A (en) * | 2013-01-08 | 2013-05-01 | 汤志忠 | Wedge type reusing setting and deblocking packer |
| CN103075126B (en) * | 2013-01-08 | 2017-07-28 | 大庆市晟威机械制造有限公司 | Wedged, which is reused, sits deblocking packer |
| CN103306635A (en) * | 2013-06-28 | 2013-09-18 | 中国石油天然气股份有限公司 | Steel skeleton rubber tube |
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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: 20130612 Termination date: 20140108 |