CN206329307U - New water injection through tubing and casing back flushing packer - Google Patents
New water injection through tubing and casing back flushing packer Download PDFInfo
- Publication number
- CN206329307U CN206329307U CN201621471340.3U CN201621471340U CN206329307U CN 206329307 U CN206329307 U CN 206329307U CN 201621471340 U CN201621471340 U CN 201621471340U CN 206329307 U CN206329307 U CN 206329307U
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- water injection
- fluid cylinder
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Abstract
The utility model is related to a kind of oil field well water injection tool, especially a kind of new water injection through tubing and casing back flushing packer.New water injection through tubing and casing back flushing packer, including top connection, upper center tube, lower center tube and lower contact, upper center tube lower end connects lower center tube, top connection bottom outer wall connection outer barrel, backwash valve is set in the annular space between upper center tube and outer barrel, backwash valve inwall is provided with annular groove, O-ring seal is set in annular groove, outer tube inner wall is provided with annular groove, O-ring seal is set in annular groove, outer barrel lower end to connect and be set with packing element and spacer ring outside exterior central tube, exterior central tube, and exterior central tube bottom outer wall is cased with liquid cylinder；The upper fluid cylinder of liquid cylinder lower end connection, the upper lower fluid cylinder of fluid cylinder lower end connection.The utility model is rational in infrastructure, simple to operate, can meet oil field become more meticulous stratified injection water technology and water injection well anti-flushing well technique etc. requirement, while can also avoid because annular pressure fluctuation or the excessive opening backwash valve of interlayer pressure difference, cause packer fail situation.
Description
Technical field
The utility model is related to a kind of oil field well water injection tool, especially a kind of new water injection through tubing and casing back flushing packer.
Background technology
Separate water injection well or water injection through tubing and casing well realize stratified injection water technology and water filling during production using packer
Well anti-flushing well technique.The water injection packer generally existing backwash valve opening pressure that current down-hole string is used is small, it is impossible to meet oil
Field become more meticulous stratified injection water technology and water injection well anti-flushing well technique etc. requirement；Easily missed after anti-flushing well, stopping note process causes interlayer
Channelling problem, influences dispensing flood effectiveness；In the injecting process, because water injection pressure fluctuation or interlayer pressure difference are excessive, beat backwash valve
Open, cause interlayer to connect, the problems such as packer fails.
The content of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art there is provided one kind is simple in construction, disclosure satisfy that oil field
Become more meticulous the new water injection through tubing and casing back flushing packer of the requirement such as stratified injection water technology and water injection well anti-flushing well technique.
The technical solution of the utility model is：
New water injection through tubing and casing back flushing packer, including top connection, upper center tube, lower center tube and lower contact, its feature exist
In the top connection lower inner wall connects upper center tube, upper center tube lower end connection lower center tube, under the connection of lower center tube lower end
Outer wall is cased with stop collar in the middle part of joint, lower contact, and stop collar is fixed by unsealing shear pin with lower contact, stop collar top connection lock
Backwash valve, backwash valve inwall are set in ring, top connection bottom outer wall connection outer barrel, the annular space between upper center tube and outer barrel
It is provided with annular groove, annular groove and O-ring seal is set, outer tube inner wall, which is provided with annular groove, annular groove, sets O-ring seal, outside
Packing element and spacer ring are set with outside cylinder lower end connection exterior central tube, exterior central tube, exterior central tube bottom outer wall is cased with liquid cylinder；Fluid cylinder
The upper fluid cylinder of cylinder lower end connection, the upper lower fluid cylinder of fluid cylinder lower end connection, upper fluid cylinder and lower fluid cylinder are sleeved on lower center tube, under lower fluid cylinder
End connection lock tube, lock tube bottom connects fairlead by setting shear pin, and fairlead is connected by screw thread with lower contact.
Further, the backwash valve outer wall sets step, and step is arranged on backwash valve O in outer barrel annular groove at bottom
In type sealing ring relative position.
Further, seal gasket is set below the backwash valve, and seal gasket is the up-small and down-big ring in L shapes in longitudinal section
Shape tube-in-tube structure.
The utility model is simple in construction, and outer tube inner wall sets O-ring seal, increases packer backwash valve opening pressure and anti-
The sealing effectiveness of valve is washed, is applied in separate water injection well or water injection through tubing and casing well, oil field is met and becomes more meticulous stratified injection water technology and note
The requirement such as well anti-flushing well technique, while the backwash valve caused by annular pressure fluctuation or interlayer pressure difference are excessive can also be avoided to beat
Open, the situation for causing packer to fail.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
The O-ring seal of 1 top connection, 2 outer barrel, 3 O-ring seal, 4 upper center tube, 5 O-ring seal 6
The liquid cylinder of packing element 12 in the spacer ring 11 of 7 backwash valve, 8 seal gasket, 9 exterior central tube, 10 end packing element 11
The stop collar 19 of 15 lower center tube of fluid cylinder, 16 times fluid cylinders, 17 lock ring 18 unseals the lock tube of shear pin 20 on 14
21 set the lower contact of the fairlead 23 of shear pin 22 fluting tapered end holding screw 24.
Embodiment
New water injection through tubing and casing back flushing packer, including top connection 1, upper center tube 4, lower center tube 15 and lower contact 24, institute
State the lower inner wall of top connection 1 connection upper center tube 4, the lower end of upper center tube 4 connection lower center tube 15, the connection of the lower end of lower center tube 15
Lower contact 24, the middle part outer wall of lower contact 24 is cased with stop collar 18, and stop collar 18 is fixed by unsealing shear pin 19 with lower contact 24, limit
Position 18 tops of set connection lock ring 17.
Backwash valve 7 is set in the bottom outer wall connection outer barrel 2 of top connection 1, the annular space between upper center tube 4 and outer barrel 2,
The inwall of backwash valve 7, which is provided with annular groove, annular groove, sets O-ring seal 3, and the inwall of outer barrel 2 is provided with annular groove, annular groove and set
O-ring seal 3, the outer wall of backwash valve 7 sets step, and step is arranged on the O in the annular groove of outer barrel 2 at bottom of backwash valve 7
In the relative position of type sealing ring 3, the setting of step can increase the Opening pressure of backwash valve 7, can increase making for O-ring seal 3 again
Use the life-span.The lower section of backwash valve 7 sets seal gasket 8, and seal gasket 8 is the up-small and down-big annulus knot in L shapes in longitudinal section
Structure, the lower end of backwash valve 7 and sealant tape complementary structure.
The lower end of outer barrel 2 is connected and packing element and spacer ring 11 is set with outside exterior central tube 9, exterior central tube 9, and exterior central tube 9 is outer to be set with
There are packing element and spacer ring 11, packing element is divided into end packing element 10 and middle packing element 12, and the bottom outer wall of exterior central tube 9 is cased with liquid cylinder 13；Fluid cylinder
The upper fluid cylinder 14 of 13 lower ends of cylinder connection, the upper lower fluid cylinder 16 of the lower end of fluid cylinder 14 connection, upper fluid cylinder 14 and lower fluid cylinder 16 are sleeved on lower center
On pipe 15, the lower lower end of fluid cylinder 16 connects lock tube 20, and the bottom of lock tube 20 connects fairlead 22 by setting shear pin 21, and fairlead 22 leads to
Screw thread is crossed to be connected with lower contact 24.
During work, to after projected depth under packer, liquid is injected into oil pipe, under inside and outside differential pressure effect, backwash valve 7
Close, when pressure reaches certain value, set shear pin 21 and cut, upper fluid cylinder 14 and lower fluid cylinder 16 move up compression packing element, make
Packing element Expansion sealing oil casing annular space；Meanwhile, lock ring 17 is locked with lock tube 20, it is impossible to disengaged, and packer will not after pressure release
Voluntarily unseal；During backwash, liquid is injected to oil casing annular space, when pressure difference reaches certain value, flushing valve is opened, and continues to inject
Liquid, you can realize anti-flushing well；During deblocking, upper lifting pipe post cuts deblocking shear pin 19, continues upper lifting pipe post, removing seal for packer.
Finally it should be noted that:Above example is only to illustrate the technical solution of the utility model rather than it is limited
System；Although the utility model is described in detail with reference to preferred embodiment, those of ordinary skill in the art should
Understand：Still embodiment of the present utility model can be modified or some technical characteristics are equally replaced
Change；Without departing from the spirit of technical solutions of the utility model, it all should cover in the claimed technical scheme of the utility model
Among scope.
Claims (4)
1. new water injection through tubing and casing back flushing packer, including top connection, upper center tube, lower center tube and lower contact, it is characterised in that
The top connection lower inner wall connects upper center tube, and connection lower center tube in upper center tube lower end connects under the connection of lower center tube lower end
Outer wall is cased with stop collar in the middle part of head, lower contact, and stop collar is fixed by unsealing shear pin with lower contact, stop collar top connection lock
Backwash valve, backwash valve inwall are set in ring, top connection bottom outer wall connection outer barrel, the annular space between upper center tube and outer barrel
It is provided with annular groove, annular groove and O-ring seal is set, outer tube inner wall, which is provided with annular groove, annular groove, sets O-ring seal, outside
Packing element and spacer ring are set with outside cylinder lower end connection exterior central tube, exterior central tube, exterior central tube bottom outer wall is cased with liquid cylinder；Fluid cylinder
The upper fluid cylinder of cylinder lower end connection, the upper lower fluid cylinder of fluid cylinder lower end connection, upper fluid cylinder and lower fluid cylinder are sleeved on lower center tube, under lower fluid cylinder
End connection lock tube, lock tube bottom connects fairlead by setting shear pin, and fairlead is connected by screw thread with lower contact.
2. new water injection through tubing and casing back flushing packer according to claim 1, it is characterised in that the backwash valve outer wall setting table
Rank, step is arranged on backwash valve at bottom in outer barrel annular groove in O-ring seal relative position.
3. new water injection through tubing and casing back flushing packer according to claim 1, it is characterised in that set below the backwash valve close
Potting pad, seal gasket is the up-small and down-big annulus structure in L shapes in longitudinal section.
4. new water injection through tubing and casing back flushing packer according to claim 1, it is characterised in that packing element is divided into end packing element and middle glue
Cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621471340.3U CN206329307U (en) | 2016-12-30 | 2016-12-30 | New water injection through tubing and casing back flushing packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621471340.3U CN206329307U (en) | 2016-12-30 | 2016-12-30 | New water injection through tubing and casing back flushing packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206329307U true CN206329307U (en) | 2017-07-14 |
Family
ID=59293561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621471340.3U Active CN206329307U (en) | 2016-12-30 | 2016-12-30 | New water injection through tubing and casing back flushing packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206329307U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211587A (en) * | 2019-07-10 | 2021-01-12 | 中国石油天然气股份有限公司 | Packer (CN) |
| CN116641682A (en) * | 2023-07-26 | 2023-08-25 | 四川圣诺油气工程技术服务有限公司 | Vortex blade type oil pipe plug and use method thereof |
-
2016
- 2016-12-30 CN CN201621471340.3U patent/CN206329307U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211587A (en) * | 2019-07-10 | 2021-01-12 | 中国石油天然气股份有限公司 | Packer (CN) |
| CN112211587B (en) * | 2019-07-10 | 2022-08-05 | 中国石油天然气股份有限公司 | Packer (CN) |
| CN116641682A (en) * | 2023-07-26 | 2023-08-25 | 四川圣诺油气工程技术服务有限公司 | Vortex blade type oil pipe plug and use method thereof |
| CN116641682B (en) * | 2023-07-26 | 2023-09-29 | 四川圣诺油气工程技术服务有限公司 | Vortex blade type oil pipe plug and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Novel oil jacket divides annotates backwash packer Effective date of registration: 20180926 Granted publication date: 20170714 Pledgee: Qingfeng rural credit cooperatives cooperation association Pledgor: Puyang Donghao Mechanical & Electronic Co.,Ltd. Registration number: 2018990000885 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220720 Granted publication date: 20170714 Pledgee: Qingfeng rural credit cooperatives cooperation association Pledgor: Puyang Donghao Mechanical & Electronic Co.,Ltd. Registration number: 2018990000885 |