CN206874249U - Fluid power expansion type well packer capable of flushing well - Google Patents
Fluid power expansion type well packer capable of flushing well Download PDFInfo
- Publication number
- CN206874249U CN206874249U CN201720645863.3U CN201720645863U CN206874249U CN 206874249 U CN206874249 U CN 206874249U CN 201720645863 U CN201720645863 U CN 201720645863U CN 206874249 U CN206874249 U CN 206874249U
- Authority
- CN
- China
- Prior art keywords
- packer
- central tube
- packing element
- well
- sliding sleeve
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Links
- 238000011010 flushing procedure Methods 0.000 title claims abstract description 13
- 239000012530 fluid Substances 0.000 title claims abstract description 9
- 238000012856 packing Methods 0.000 claims abstract description 42
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000004073 vulcanization Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000000243 solution Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model belongs to oil field well field of tool, a kind of more particularly to fluid power expansion type well packer capable of flushing well, the utility model provides a kind of fluid power expansion type well packer capable of flushing well, including top connection, lower contact, central tube and packing element component, the upper end of described packing element component is fixedly connected with the immovable outer wall of packer；In the compresses lower section of packer, sliding sleeve, spring and adjusting set are provided with, described spring housing is provided with annular protrusion, annular protrusion is between sliding sleeve and spring on central tube and in the space that sliding sleeve, adjusting set and central tube three surround on central tube.The utility model employs the hydraulic pressure solution sealing mechanism that a deblocking piston is core, and compared with prior art, above-mentioned solution sealing mechanism is relatively reliable.In addition, using above-mentioned solution sealing mechanism, packer can be made to repeat to unseal and set on well, so as to complete well-flushing in the case where not playing well, effectively simplify operation process, reduce operating cost.
Description
Technical field
The utility model belongs to oil field well technical field of tools, more particularly to a kind of packing of fluid power expansion type washing well
Device.
Background technology
Packer is a kind of downhole tool commonly used in the production of oil field, wherein, long packing element packer is a kind of weight therein
Want type.This packer makes packing element bulge by injecting water under high pressure between central tube and packing element, so as to realize packer
Set.However, existing long packing element packer is unsealed by way of cutting and unsealing pin mostly, this deblocking structure failure rate
It is higher, easily produce the problem of deblocking power is excessive, and usual manner is difficult to deblocking.Meanwhile above-mentioned packer does not possess well-flushing work(
Can, full well casing post can only be risen during well-flushing, operation process is cumbersome.
Utility model content
The utility model is by changing the arrangement of valve system, there is provided a kind of fluid power expansion type well packer capable of flushing well, with solution
The problem of being proposed in certainly above-mentioned background technology.
The technical problem that the utility model solves is realized using following technical scheme：The utility model provides one kind
Fluid power expansion type well packer capable of flushing well, including top connection, lower contact, central tube and packing element component, top connection and lower contact difference
Be threadedly attached in the upper and lower ends of central tube, packing element assembly set is mounted in the middle part of central tube, packing element component by packing element and
Vulcanization is connected to two steel bushings composition at packing element both ends；
In the top section of packer, check valve is provided between central tube and packer outer wall, check valve valve rod
End set has a deblocking piston, and inlet opening is correspondingly arranged on unsealing the upper end of piston in the side wall of packer, it is described on connect
Lead is provided with the lower surface of head, one end of lead is embedded in top connection by interference fit, the other end and deblocking
Pilot hole grafting on piston coordinates, and the upper end of described packing element component is fixedly connected with the immovable outer wall of packer；
In the compresses lower section of packer, sliding sleeve, spring and adjusting set are provided with, sliding sleeve passes through screw thread and the steel of packing element lower end
Set connection, adjusting set are threadedly attached in the lower end of sliding sleeve, and described spring housing is on central tube and in sliding sleeve, adjusting set
In the space surrounded with central tube three, annular protrusion is provided with central tube, annular protrusion is between sliding sleeve and spring.
At least two, described check valve, axisymmetrical of each check valve along packer are set.
The beneficial effects of the utility model are：
1st, the utility model employs the hydraulic pressure solution sealing mechanism that a deblocking piston is core, when setting, is noted into central tube
Enter water under high pressure, now check valve is turned on, and water under high pressure is got enter between central tube and packing element, and realization is set；During deblocking, to oil jacket
Annular space injects water under high pressure, and deblocking piston is descending under the driving of hydraulic pressure, then promotes the valve rod of check valve, unidirectional so as to open
Valve, realize deblocking.Compared with prior art, above-mentioned solution sealing mechanism is relatively reliable.In addition, using above-mentioned solution sealing mechanism,
Packer can be made to repeat to unseal and set on well, so as to complete well-flushing in the case where not playing well, effectively simplify operation process,
Reduce operating cost.
2nd, in the prior art, for packer setting with during deblocking, the position at packing element component both ends is constant, this feelings
Under condition, when the pressure of water under high pressure is excessive, the problem of packing element ruptures can occur often.And in the utility model, packing element component
Lower end can be slided within the specific limits along central tube, this structure is not only advantageous to good packing element and preferably pasted with internal surface of sleeve pipe
Close, and effectively can prevent packing element from rupturing.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the partial enlarged drawing at check valve.
In figure, 1- top connections, 2- guide rods, 3- valve rods, 4- packing elements, 5- central tubes, 6- steel bushings, 7- sliding sleeves, 8- springs, 9-
Adjusting set, 10- lower contacts, 11- deblocking pistons, 12- annular protrusions.
Embodiment
The utility model is described further below in conjunction with accompanying drawing：
The present embodiment includes top connection 1, lower contact 10, central tube 5 and packing element component, and top connection 1 and lower contact 10 are distinguished
Be threadedly attached in the upper and lower ends of central tube 5, packing element assembly set is mounted in the middle part of central tube 5, packing element component by packing element 4 with
And vulcanization is connected to two steel bushings 6 at the both ends of packing element 4 and formed.It is above universal architecture of the prior art, will not be repeated here.
In the top section of packer, check valve, check valve valve rod 3 are provided between central tube 5 and packer outer wall
End set have deblocking piston 11, be correspondingly arranged on inlet opening with unsealing the upper end of piston 11 in the side wall of packer, it is described
Top connection 1 lower surface on be provided with lead 2, one end of lead 2 is embedded in top connection 1 by interference fit, separately
One end coordinates with the pilot hole grafting on deblocking piston 11, and the upper end of described packing element component and the immovable outer wall of packer are consolidated
Fixed connection.The utility model is employed to unseal hydraulic pressure solution sealing mechanism of the piston 11 for core, when setting, is noted into central tube 5
Enter water under high pressure, now check valve is turned on, and water under high pressure is got enter between central tube 5 and packing element 4, and realization is set；During deblocking, to oil
Annular space injection water under high pressure is covered, deblocking piston 11 is descending under the driving of hydraulic pressure, the valve rod 3 of check valve is then promoted, so as to open
Check valve, realize deblocking.Compared with prior art, above-mentioned solution sealing mechanism is relatively reliable.In addition, using above-mentioned deblocking machine
Structure, packer can be made to repeat to unseal and set on well, so as to complete well-flushing in the case where not playing well, effectively simplify operation
Process, reduce operating cost.
In the compresses lower section of packer, sliding sleeve 7, spring 8 and adjusting set 9 are provided with, sliding sleeve 7 passes through screw thread and packing element component
The steel bushing 6 of lower end connects, and adjusting set 9 is threadedly attached in the lower end of sliding sleeve 7, and described spring 8 is enclosed on central tube 5 and located
In the space that sliding sleeve 7, adjusting set 9 and the three of central tube 5 surround, annular protrusion 12, annular protrusion 12 are provided with central tube 5
Between sliding sleeve 7 and spring 8.In the prior art, for packer setting with during deblocking, the position at packing element component both ends is solid
It is fixed constant, in this case, when the pressure of water under high pressure is excessive, the problem of packing element 4 ruptures can occur often.And in this practicality
In new, the lower end of packing element component can be slided within the specific limits along central tube 5, and this structure is not only advantageous to packing element 4 and set
Inside pipe wall is preferably bonded, and can effectively prevent packing element 4 from rupturing.The setting of adjusting set 9 so that the stroke of packing element 4 is adjustable,
To adapt to different operating modes.
At least two, described check valve, axisymmetrical of each check valve along packer are set, and such structure causes
Deblocking piston 11 when pressing valve rod 3 circumference stress evenly, so as to prevent because eccentric wear causes the sealing ring that unseals the outer wall of piston 11
Failure.
Claims (2)
1. a kind of fluid power expansion type well packer capable of flushing well, including top connection (1), lower contact (10), central tube (5) and packing element group
Part, top connection (1) and lower contact (10) are threadedly attached in the upper and lower ends of central tube (5) respectively, and packing element assembly set is mounted in
The middle part of central tube (5), two steel bushings (6) that packing element component is connected to packing element (4) both ends by packing element (4) and vulcanization form,
It is characterized in that：In the top section of packer, check valve, check valve are provided between central tube (5) and packer outer wall
The end set of valve rod (3) has deblocking piston (11), is correspondingly arranged in the side wall of packer with unsealing the upper end of piston (11)
Inlet opening, lead (2) is provided with the lower surface of described top connection (1), one end of lead (2), which passes through, is interference fitted edge
In top connection (1), the other end coordinates with the pilot hole grafting in deblocking piston (11), the upper end of described packing element component with
The immovable outer wall of packer is fixedly connected；In the compresses lower section of packer, sliding sleeve (7), spring (8) and adjusting set are provided with
(9), sliding sleeve (7) is connected by screw thread with the steel bushing (6) of packing element component lower end, and adjusting set (9) is threadedly attached in sliding sleeve (7)
Lower end, described spring (8) is enclosed on central tube 5 and surrounded in sliding sleeve (7), adjusting set (9) and central tube (5) three
In space, annular protrusion (12) is provided with central tube (5), annular protrusion (12) is located between sliding sleeve (7) and spring (8).
A kind of 2. fluid power expansion type well packer capable of flushing well according to claim 1, it is characterised in that：Described check valve is extremely
Rare two, axisymmetrical of each check valve along packer is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720645863.3U CN206874249U (en) | 2017-06-05 | 2017-06-05 | Fluid power expansion type well packer capable of flushing well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720645863.3U CN206874249U (en) | 2017-06-05 | 2017-06-05 | Fluid power expansion type well packer capable of flushing well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206874249U true CN206874249U (en) | 2018-01-12 |
Family
ID=61338348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720645863.3U Active CN206874249U (en) | 2017-06-05 | 2017-06-05 | Fluid power expansion type well packer capable of flushing well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206874249U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110318703A (en) * | 2018-03-28 | 2019-10-11 | 中石化石油工程技术服务有限公司 | A kind of minor diameter well cementation packer |
| CN114645688A (en) * | 2020-12-17 | 2022-06-21 | 中国石油化工股份有限公司 | Packer while drilling for packing underground high-pressure stratum overflow |
-
2017
- 2017-06-05 CN CN201720645863.3U patent/CN206874249U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110318703A (en) * | 2018-03-28 | 2019-10-11 | 中石化石油工程技术服务有限公司 | A kind of minor diameter well cementation packer |
| CN110318703B (en) * | 2018-03-28 | 2024-12-27 | 中石化石油工程技术服务有限公司 | A small diameter cementing packer |
| CN114645688A (en) * | 2020-12-17 | 2022-06-21 | 中国石油化工股份有限公司 | Packer while drilling for packing underground high-pressure stratum overflow |
| CN114645688B (en) * | 2020-12-17 | 2024-05-28 | 中国石油化工股份有限公司 | Packer while drilling for sealing and isolating high-pressure stratum overflow in well |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |