CN209053583U - A kind of back-washable inflatable packer - Google Patents
A kind of back-washable inflatable packer Download PDFInfo
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- CN209053583U CN209053583U CN201821526438.3U CN201821526438U CN209053583U CN 209053583 U CN209053583 U CN 209053583U CN 201821526438 U CN201821526438 U CN 201821526438U CN 209053583 U CN209053583 U CN 209053583U
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Abstract
The utility model discloses a kind of back-washable inflatable packers, including being disposed with top connection from the top down, upper mandrel and lower contact, lower mandrel is arranged in lower contact one end on the upper mandrel, and the lower mandrel is connected through a screw thread with lower contact, and first through hole is provided between the upper mandrel and lower mandrel, it is disposed with backwashing mechanism from left to right between the top connection and lower contact, fill the water bucket, setting mechanism and sealing mechanism, the backwashing mechanism, casing is filled the water to be set on upper mandrel, the setting mechanism and sealing mechanism are sheathed on the lower mandrel, packer is designed using closed self-locking mechanism, after pressure release, packing element does not unseal, interlayer pressure will not interfere with each other, only by above proposing mode, removing seal for packer just can be achieved, the anti-flushing well mechanism of packer design needs certain switch DP that can open open It opens, liquid string stratification caused by interlayer pressure changes phenomenon when can effectively prevent stopping note.
Description
Technical field
The utility model belongs to packer technology field, and in particular to a kind of back-washable inflatable packer.
Background technique
With deepening continuously for waterflooding extraction, it is desirable that water filling starting pressure is higher and higher, and interlayer pressure difference is increasing, therefore
Also higher and higher to the performance requirement of packer, conventional well, which uses, has hydraulic anchor or the water injection packer with slips class
Inter-zonal packing and anchoring string are carried out in this way with the passage of water injection time, due to downhole tool fouling, corrosion and blocking
Etc. reasons, when leading to well workover from packer is highly difficult out or even overhaul, and the design of existing backwashing mechanism is in the lower section of packing element,
There is one section of sand setting pocket on backwash piston, easy sand setting makes backwashing mechanism be not closed completely or act failure.
Utility model content
The utility model solves the deficiencies in the prior art, and providing one kind can be with the inflatable packer of backwash.
The technical scheme adopted by the utility model is a kind of back-washable inflatable packer, including from left to right successively
Be provided with top connection, upper mandrel and lower contact, and the upper mandrel is connected through a screw thread with top connection and lower contact, it is described on
It is arranged with lower mandrel close to lower contact one end on mandrel, and the lower mandrel is connected through a screw thread with lower contact, and the upper core
It is provided with first through hole between axis and lower mandrel, is disposed with backwash machine between the top connection and lower contact from left to right
Structure, water filling bucket, setting mechanism and sealing mechanism, the backwashing mechanism, water filling casing are set on upper mandrel, the setting mechanism and
Sealing mechanism is sheathed on the lower mandrel, and the backwashing mechanism, water filling bucket, setting mechanism and sealing mechanism adjacent pass through
It is threadedly coupled, the backwashing mechanism includes connection outer cylinder, and described connection outer cylinder one end is sheathed in top connection, and outside the connection
Fixed between cylinder and top connection by unsealing pin, the other end is sheathed on water filling bucket, the connection outer cylinder and upper mandrel it
Between be provided with the first annular space chamber, the first annular space chamber is disposed with upper piston, the first spring and lower piston from left to right,
Several the first pressure water holes are evenly equipped on the first spring circumference corresponding with upper mandrel, the connection outer cylinder is close to lower piston one
End is evenly equipped with several backwash blastholes.
Preferably, the setting mechanism includes positioning tube, and described positioning tube one end is sheathed on the injecting cylinder, another
End cap is set on the sealing mechanism, and the second annular space chamber, the second annular space chamber are provided between the positioning tube and lower mandrel
It is disposed with positioning ring and second spring from left to right.
Preferably, the injecting cylinder is tubular structure, and one end is arranged in first annular space chamber one end, and the lower piston one
End offsets with injecting cylinder upper end, and the contact surface of the lower piston and injecting cylinder is inclined surface, and the injecting cylinder other end is arranged in
Second annular space chamber one end, injecting cylinder inner wall one end are provided with third annular space chamber, and the third annular space chamber is sheathed on lower mandrel
One end, and the third annular space chamber is connected to first through hole, and the second through-hole is symmetrically arranged in the injecting cylinder, described second is logical
Hole is L-type, is provided with the second pressure water hole on the corresponding upper mandrel of second through-hole, and second through-hole is by the second pressure water hole and the
Two annular spaces connect, and are symmetrically arranged with third through-hole in the injecting cylinder, the third through-hole is connected to third annular space chamber.
Preferably, the sealing mechanism includes the high pressure water injection packing element being sheathed on lower mandrel, the high pressure water injection packing element
Both ends are respectively arranged with rubber tube seat and lower rubber cylinder seat, and lower rubber cylinder seat one end is sheathed on high pressure water injection packing element, another
One end is sheathed in lower contact, and Fourth Ring cavity is provided between the high pressure water injection packing element and lower contact, the upper packing element
Seat one end is sheathed on high pressure water injection packing element, and it is connect by screw thread with high pressure water injection packing element, the upper rubber tube seat other end
It is arranged in the second annular space chamber, and the second spring offsets with upper rubber tube seat.
Preferably, fourth hole is provided between the sealing mechanism and lower mandrel.
Preferably, lower contact one end whole body is evenly equipped with several backwash liquid outlets.
Preferably, second through-hole with third through-hole is orthogonal is set in the injecting cylinder.
It is further preferred that the upper mandrel includes first diameter section and second diameter section, the third annular space chamber is close
Top connection one end is first diameter section, and the other end is second diameter section, and the first diameter section diameter is greater than described second
Diameter segment diameter.
Still further preferably, it is arranged on the corresponding lower mandrel of the second spring fluted.
Still more preferably, high pressure water injection packing element surface is provided with several tires lines.
Compared to the prior art, the utility model has the advantages that
1, packer is designed using concentric binary channels, and internal channel implementation tool sets and unseals, and annulus access is realized up and down
Interlayer well-flushing function.
2, packer is designed using closed self-locking mechanism, and after pressure release, packing element is not unsealed, and interlayer pressure will not mutually be concerned with
It disturbs, only by above proposing mode, removing seal for packer just can be achieved.
3, the anti-flushing well mechanism of packer design needs certain switch DP that can open, and can effectively prevent stopping interlayer when note
Liquid string stratification caused by pressure changes phenomenon.
4, packing element sealing surfaces design has screw-type seal groove, which can be improved the sealing performance of packer, simultaneously
The distinctive frictional force of the seal groove can integrally provide virtuous anchorage force for packer, prevent from insulating during high pressure water injection
The sliding phenomenon of device occurs.
Detailed description of the invention
Fig. 1 is the utility model structure diagram；
Fig. 2 is the utility model water filling barrel structure schematic diagram.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
A kind of back-washable inflatable packer refering to fig. 1, including is disposed with top connection 1, upper mandrel from left to right
2, lower contact 4, and the upper mandrel 2 is connected through a screw thread with top connection 1, lower contact 4, in lower contact 4 one on the upper mandrel 2
End cap is equipped with lower mandrel 3, and the lower mandrel 3 is connected through a screw thread with lower contact 4, and between the upper mandrel 2 and lower mandrel 3
Be provided with first through hole 9, be disposed with from left to right between the top connection 1 and lower contact 4 backwashing mechanism 5, water filling bucket 6,
Setting mechanism 7 and sealing mechanism 8, the backwashing mechanism 5, water filling bucket 6 are sheathed on mandrel 2, the setting mechanism 7 and sealing
Mechanism 8 is sheathed on the lower mandrel 3, is mutually communicated between the backwashing mechanism 5, water filling bucket 6, setting mechanism 7 and sealing mechanism 8
Threaded connection is crossed, the backwashing mechanism 5 includes connection outer cylinder 52, and described 52 one end of connection outer cylinder is sheathed in top connection 1, and
Fixed by deblocking pin 51 between the connection outer cylinder 52 and top connection 1, the other end is sheathed on water filling bucket 6, the company
It connects and is provided with the first annular space 54 between outer cylinder 52 and upper mandrel 2, first annular space 54 is disposed with upper piston from left to right
53, the first spring 55, lower piston 56 are evenly equipped with several the first pressure water on first spring 55 circumference corresponding with upper mandrel 2
Hole 21, the connection outer cylinder 52 are evenly equipped with several backwash blastholes 57 close to 56 one end of lower piston.First pressure water hole 21
It causes to unseal to balance the preventing from altering on lower piston 56 of pressing type.
In order to realize automatic-sealed, refering to fig. 1, the setting mechanism 7 includes positioning tube 74,74 1 end cap of positioning tube
On the injecting cylinder 6, the other end is sheathed on the sealing mechanism 8, is arranged between the positioning tube 74 and lower mandrel 3
There is the second annular space 71, second annular space 71 is disposed with positioning ring 72, second spring 73 from left to right.
Refering to fig. 1, the injecting cylinder 6 is tubular structure, and one end is arranged in 54 one end of the first annular space, and the lower piston
56 one end offset with 6 upper end of injecting cylinder, and the contact surface of the lower piston 56 and injecting cylinder 6 is inclined surface, and the injecting cylinder 6 is another
End is arranged in 71 one end of the second annular space chamber, and described 6 inner wall one end of injecting cylinder is provided with third annular space chamber 64, the third annular space chamber
64 are sheathed on lower 3 one end of mandrel, and the third annular space chamber 64 is connected to first through hole 9, are symmetrical arranged in the injecting cylinder 6
There is the second through-hole 63, second through-hole 63 is L-type, is provided with the second pressure water hole on the corresponding upper mandrel 2 of second through-hole 63
22, the second pressure water hole 22 is connect with the second annular space chamber 71 by second through-hole 63, and the is symmetrically arranged in the injecting cylinder 6
Three through-holes 62, the third through-hole 62 are connected to third annular space chamber 64.
Refering to fig. 1, fourth hole 10 is provided between the sealing mechanism 7 and lower mandrel 3, the sealing mechanism 8 includes
The high pressure water injection packing element 82 being sheathed on lower mandrel 3,82 both ends of high pressure water injection packing element are respectively arranged with 81 He of rubber tube seat
Lower rubber cylinder seat 83, and described 83 one end of lower rubber cylinder seat is sheathed on high pressure water injection packing element 82, the other end is sheathed on lower contact 4
On, and the 4th annular space 11 is provided between the high pressure water injection packing element 82 and lower contact 4, described upper 81 one end of rubber tube seat is sheathed on
On high pressure water injection packing element 82, and it is connected through a screw thread, and the other end is arranged in the second annular space chamber 71, and the second spring 73
It offsets with upper rubber tube seat 81.
Refering to fig. 1,4 one end of lower contact whole body is evenly equipped with several backwash liquid outlets 41.
Second through-hole 63 with third through-hole 62 is orthogonal is set in the injecting cylinder 6.
The upper mandrel 2 includes first diameter section 23 and second diameter section 24, and the third annular space chamber 64 is close to top connection
1 one end is first diameter section 23, and the other end is second diameter section 24, and 23 diameter of first diameter section is greater than described second
24 diameter of diameter segment.
In order to which in deblocking, positioning ring 72 and first diameter section 23 form gap, the corresponding lower mandrel of the second spring 73
It is arranged on 3 fluted.
In order to increase the stability of anchoring, 82 surface of high pressure water injection packing element is provided with several tires lines.
It is setting: high pressure water to be squeezed into upper mandrel, high pressure water enters from the second pressure water hole 22, and passes through the in injecting cylinder 6
Two through-holes 63 enter the second annular space chamber 71, and high pressure water pushes positioning ring 72 to walk downwards, while high pressure water is from 72 two sides of positioning ring
Enter in the second annular space chamber 71, then the high pressure water in the second annular space chamber 71 supports high pressure water injection packing element 82 further through 10
It rises, high pressure water injection packing element 82 is combined closely with outer sleeve, and after the completion of suppressing, positioning ring 72 pushes away work in the counter of second spring 73
Under firmly, the second annular space 71 is closed, is achieved the effect that automatic setting.First be arranged presses water hole 21 to balance backwash machine
Pressure difference between structure and injecting cylinder prevents from unsealing.
Backwash: after the completion of setting, high pressure water is pushed lower piston 56 and injecting cylinder 6 open and is separated, then by injecting cylinder 6
Third through-hole 62, high pressure water pass sequentially through third annular space chamber 64, first through hole 9, backwash liquid outlet 41 and carry out backwash.It is such anti-
Washing Cheng Wuxu deblocking just can complete.
Deblocking: top connection 1 above mentions, and deblocking pin 51 is cut, while upper mandrel 2, lower mandrel 3, the upward fortune of lower contact 4
Dynamic, backwashing mechanism 5, injecting cylinder 6, setting mechanism 7 and sealing mechanism 8 slide relatively downward, and with lower mandrel 3 phase occurs for positioning ring 72
To movement, positioning ring 72 and the sealing of the second annular space chamber 71 are released from, and being mothballed will be from the high pressure water in sealing mechanism 8
Second pressure water hole 22 is flowed out, and high pressure water injection packing element 82 also slowly recycles, and deblocking is completed.
Above-described embodiment, the only preferred embodiment of the utility model not are used to limit the implementation model of the utility model
It encloses, therefore all equivalent variationss done with content described in the utility model claims, the utility model right should all be included in and wanted
Within the scope of asking.
Claims (10)
1. a kind of back-washable inflatable packer, including be disposed with from left to right top connection (1), upper mandrel (2) and under
Connector (4), and the upper mandrel (2) is connected through a screw thread with top connection (1) and lower contact (4), which is characterized in that the upper core
It is arranged with lower mandrel (3) on axis (2) close to lower contact (4) one end, and the lower mandrel (3) and lower contact (4) are connected by screw thread
Connect, and be provided with first through hole (9) between the upper mandrel (2) and lower mandrel (3), the top connection (1) and lower contact (4) it
Between be disposed with backwashing mechanism (5), injecting cylinder (6), setting mechanism (7) and sealing mechanism (8), the backwash machine from left to right
Structure (5), injecting cylinder (6) are sheathed on mandrel (2), and the setting mechanism (7) and sealing mechanism (8) are sheathed on the lower mandrel
(3) on, the backwashing mechanism (5), injecting cylinder (6), setting mechanism (7) and adjacent of sealing mechanism (8) are connected through a screw thread,
The backwashing mechanism (5) includes connection outer cylinder (52), and described connection outer cylinder (52) one end is sheathed on top connection (1), and described
It connects and is fixed between outer cylinder (52) and top connection (1) by deblocking pin (51), the other end is sheathed on injecting cylinder (6), institute
It states and is provided with the first annular space chamber (54) between connection outer cylinder (52) and upper mandrel (2), the first annular space chamber (54) is from left to right
It is disposed with upper piston (53), the first spring (55) and lower piston (56), first spring (55) and upper mandrel (2) are right
It answers and is evenly equipped with several the first pressures water hole (21) on circumference, the connection outer cylinder (52) is close to lower piston (56) if one end is evenly equipped with
Dry backwash blasthole (57).
2. a kind of back-washable inflatable packer according to claim 1, which is characterized in that setting mechanism (7) packet
It includes positioning tube (74), described positioning tube (74) one end is sheathed on the injecting cylinder (6), and the other end is sheathed on the sealer
On structure (8), the second annular space chamber (71), the second annular space chamber (71) are provided between the positioning tube (74) and lower mandrel (3)
It is disposed with positioning ring (72) and second spring (73) from left to right.
3. a kind of back-washable inflatable packer according to claim 2, which is characterized in that the injecting cylinder (6) is pipe
Shape structure, one end are arranged in first annular space chamber (54) one end, and the lower piston (56) one end and injecting cylinder (6) upper end phase
It supports, the contact surface of the lower piston (56) and injecting cylinder (6) is inclined surface, and injecting cylinder (6) other end is arranged in the second ring
Cavity (71) one end, described injecting cylinder (6) inner wall one end are provided with third annular space chamber (64), and the third annular space chamber (64) is arranged
In lower mandrel (3) one end, and the third annular space chamber (64) is connected to first through hole (9), is symmetrical arranged in the injecting cylinder (6)
Have the second through-hole (63), second through-hole (63) is L-type, is provided with the in the second through-hole (63) correspondence on mandrel (2)
Second pressure water hole (22) is connect by two pressures water hole (22), second through-hole (63) with the second annular space chamber (71), the injecting cylinder
(6) it is symmetrically arranged with third through-hole (62) in, the third through-hole (62) is connected to third annular space chamber (64).
4. a kind of back-washable inflatable packer according to claim 3, which is characterized in that sealing mechanism (8) packet
The high pressure water injection packing element (82) being sheathed on lower mandrel (3) is included, high pressure water injection packing element (82) both ends are respectively arranged with gluing
Cylinder base (81) and lower rubber cylinder seat (83), and the lower rubber cylinder seat (83) one end is sheathed on high pressure water injection packing element (82), it is another
End cap is set on lower contact (4), and is provided with Fourth Ring cavity between the high pressure water injection packing element (82) and lower contact (4)
(11), described upper rubber tube seat (81) one end is sheathed on high pressure water injection packing element (82), and it passes through screw thread and high pressure water injection packing element
(82) it connects, upper rubber tube seat (81) other end is arranged in the second annular space chamber (71), and the second spring (73) and gluing
Cylinder base (81) offsets.
5. a kind of back-washable inflatable packer according to claim 4, which is characterized in that the sealing mechanism (7) with
Fourth hole (10) are provided between lower mandrel (3).
6. a kind of back-washable inflatable packer according to claim 5, which is characterized in that described lower contact (4) one end
The whole body is evenly equipped with several backwash liquid outlets (41).
7. a kind of back-washable inflatable packer according to claim 6, which is characterized in that second through-hole (63) with
Third through-hole (62) is orthogonal to be set in the injecting cylinder (6).
8. a kind of back-washable inflatable packer according to claim 7, which is characterized in that the upper mandrel (2) includes
First diameter section (23) and second diameter section (24), the third annular space chamber (64) are first diameter close to top connection (1) one end
Section (23), the other end is second diameter section (24), and first diameter section (23) diameter is greater than the second diameter section
(24) diameter.
9. a kind of back-washable inflatable packer according to claim 8, which is characterized in that the second spring (73) is right
It should descend on mandrel (3) to be arranged fluted.
10. a kind of back-washable inflatable packer according to claim 9, which is characterized in that the high pressure water injection packing element
(82) surface is provided with several tires lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821526438.3U CN209053583U (en) | 2018-09-18 | 2018-09-18 | A kind of back-washable inflatable packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821526438.3U CN209053583U (en) | 2018-09-18 | 2018-09-18 | A kind of back-washable inflatable packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209053583U true CN209053583U (en) | 2019-07-02 |
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ID=67049023
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821526438.3U Active CN209053583U (en) | 2018-09-18 | 2018-09-18 | A kind of back-washable inflatable packer |
Country Status (1)
| Country | Link |
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| CN (1) | CN209053583U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109113638A (en) * | 2018-09-18 | 2019-01-01 | 宝鸡瑞林石油机电设备有限责任公司 | A kind of back-washable inflatable packer |
| CN112177565A (en) * | 2020-09-27 | 2021-01-05 | 德州众凯石油科技有限公司 | Salvaging type drilling-plug-free cementing well completion device |
-
2018
- 2018-09-18 CN CN201821526438.3U patent/CN209053583U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109113638A (en) * | 2018-09-18 | 2019-01-01 | 宝鸡瑞林石油机电设备有限责任公司 | A kind of back-washable inflatable packer |
| CN112177565A (en) * | 2020-09-27 | 2021-01-05 | 德州众凯石油科技有限公司 | Salvaging type drilling-plug-free cementing well completion device |
| CN112177565B (en) * | 2020-09-27 | 2021-05-14 | 德州众凯石油科技有限公司 | Salvaging type drilling-plug-free cementing well completion device |
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