CN209724288U - Low pressure unseals amplificate packer - Google Patents
Low pressure unseals amplificate packer Download PDFInfo
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- CN209724288U CN209724288U CN201920224355.7U CN201920224355U CN209724288U CN 209724288 U CN209724288 U CN 209724288U CN 201920224355 U CN201920224355 U CN 201920224355U CN 209724288 U CN209724288 U CN 209724288U
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- deblocking
- righting
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Abstract
The utility model belongs to oil field well technical field of tools, more particularly to a kind of low pressure unseals amplificate packer, including top connection, lower contact, central tube, standby cap, packing element component, set valve group and deblocking valve group, the valve mounting hole is no less than 2, valve mounting hole, which is used to install, sets valve group or deblocking valve group, wherein at least one valve mounting hole is used to install to set valve group, at least one mounting hole is used to install deblocking valve group, and described setting valve group and unseal valve group is encapsulated in valve mounting hole by the standby cap；The lower contact outer wall is set with righting sub-assembly, the righting sub-assembly includes righting ball seat, righting ball and spring set, the lower contact outer wall has type conical bench, the righting ball seat is sleeved at type conical bench, and righting ball seat inner wall is connect at the big outer diameter of type conical bench by spline.Solution seal pressure needed for the utility model is small, solves the problems, such as that inflatable packer deblocking is difficult, while also having the function of righting.
Description
Technical field
The utility model belongs to oil field well technical field of tools more particularly to a kind of low pressure deblocking amplificate packer.
Background technique
There are two types of inflatable packers common at present, one is suppressing to set, removes pressure and unseals, cannot set for a long time
It is restricted the use of this kind of packer；Another kind is set by setting ball-and-seat, the deblocking of this kind of packer
Mode is to cut by the frictional force of packing element and casing deblocking shear pin by upper lifting pipe post and realize deblocking, the solution needed
It is very big to seal power, deblocking is difficult.So designing a kind of easy inflatable packer of deblocking becomes those skilled in the art urgently
It solves the problems, such as.
Utility model content
To overcome the problems, such as that inflatable packer deblocking is difficult in background technique, the utility model provides a kind of low pressure deblocking
Amplificate packer, the utility model has the advantages that low pressure deblocking, and the utility model has the function of righting, and applicability is wide
It is general.
Technical solution provided by the utility model is: a kind of low pressure unseals amplificate packer, including top connection, lower contact,
Central tube, standby cap, packing element component and valve group is set, the lower end of the central tube is threadedly coupled with lower contact, the packing element
There are liquid to fill ring cavity on central tube, between packing element component and central tube for assembly set, and the packing element component includes upper
Connection ring under connection ring, packing element, lower jacket and packing element on sheath, packing element, the both ends vulcanization of the packing element is to connecting on packing element
Under ring and packing element in connection ring, connection ring is threadedly coupled with upper jacket on the packing element, and connection ring is under under the packing element
Sheath is threadedly coupled, and the central tube threaded upper ends are connected with valve vector junctions, and the valve vector junctions threaded upper ends connect
It connects in top connection, the upper jacket is threaded in valve vector junctions lower end, and the valve vector junctions top is provided with valve
Mounting hole, the axis of the valve mounting hole is parallel with the axis of valve vector junctions, and valve vector junctions lower part is provided with company
The channel of port valve mounting hole and liquid filling ring cavity, the valve group that sets are arranged in valve mounting hole, the seat
Envelope valve group includes mounting body and sets ball-and-seat, and the mounting body is provided with axial blind hole and radial through-hole, axial blind hole
It is connected to become with radial through-hole and sets feed pathway, the ball-and-seat that sets is mounted in the axial blind hole of mounting body, institute
It is provided with communicating valve vector junctions inner cavity on the valve vector junctions stated and sets the inlet opening one of feed pathway, the application further includes solution
Valve group is sealed, the valve mounting hole is no less than 2, and valve mounting hole, which is used to install, sets valve group or deblocking valve group, wherein at least has
One valve mounting hole is used to install to set valve group, at least one mounting hole is used to install deblocking valve group, and described sets valve group
It is encapsulated in valve mounting hole with deblocking valve group by the standby cap, cap preparation thread is connected to valve vector junctions upper end；Described
Deblocking valve group includes that shell one, shell two, closure, piston and deblocking spring, the shell two are threaded in shell one
The outer wall of lower end, shell one and shell two is tightly connected with valve inner wall of the hole installing respectively, and the lower part of two outer wall of shell has undergauge
Part, there are liquid out to keep in ring cavity between diameter shrinkage part and valve mounting hole, and the closure is threaded in two lower end of shell simultaneously
And the outer diameter blocked is less than or equal to two outer diameter of shell, and connection one inner cavity of shell is provided on the top of shell one and corresponding standby cap
With the deblocking pressure channel of oil well casing, the lower end of piston is connected with stopper rod, and the lower end of stopper rod is greater than the plug of stopper rod with outer diameter
Head, the stopper rod head extend into shell two and are slidably and sealingly connected with two inner wall of shell, and the place of being slidably and sealingly connected with corresponds to
Shell two on be provided with it is described go out liquid keep in the deblocking lock hole that ring cavity be connected to, be provided with diameter in the closure and be greater than stopper rod
The blind hole of head diameter, the deblocking spring are arranged outside stopper rod, and the upper and lower ends for unsealing spring are against piston and shell respectively
On body two, piston has upward movement tendency, the corresponding shell two in deblocking spring lower part under the elastic force effect of deblocking spring
Side wall and valve vector junctions side wall are provided with deblocking apocenosis passage, are also provided on the shell two and block interior pressure for balancing
Gas vent；The lower contact outer wall is set with righting sub-assembly, the righting sub-assembly include righting ball seat, righting ball and
Spring pocket, the lower contact outer wall have type conical bench, and the righting ball seat is sleeved at type conical bench, in righting ball seat
Wall is connect at the big outer diameter of type conical bench by spline, and righting ball seat can slide axially relative to lower contact, righting ball seat side wall
On be provided with ball, the righting ball is placed in ball, the aperture on the outside of ball be less than righting bulb diameter, the spring pocket
Righting ball seat lower end is sleeved in lower contact and be threadedly attached in from the lower end of lower contact, is stayed between spring pocket and lower contact
There is compression ring cavity, the compression ring cavity is built-in with fixed piston and compressed spring, and the compressed spring setting is lived fixed
Between plug and spring pocket, the fixed piston is threaded on lower contact outer wall, and spring pocket is made in the elastic force of compressed spring
There is downward movement tendency with lower, be provided with inlet opening in corresponding lower contact between the righting ball seat and fixed piston
Two.
Filter sheath is set in the valve vector junctions, filter sheath is welded on valve vector junctions, the filter sheath
It is circumferentially uniformly provided with the gap of filtration, the position in gap is corresponding with one position of inlet opening.
The utility model has the following beneficial effects: the utility model overcomes the difficult problem of inflatable packer deblocking, this
Utility model can realize that low pressure unseals, and deblocking process is simple, be conducive to improve working efficiency；The utility model has righting function
Can, set that effect is unaffected, and applicability is more extensive in lower curved section, casing deformation well section use.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram for setting valve group in the utility model and unsealing valve group.
Fig. 3 is the partial enlarged view in Fig. 2 at A.
In figure: 1- top connection, 2- standby cap, 3- filter sheath, 4- valve vector junctions, 5- central tube, 6- upper jacket, on 7- packing element
Connection ring, 8- packing element, connection ring under 9- packing element, 10- lower jacket, 11- lower contact, 12- righting ball seat, 13- righting ball, 14- into
Fluid apertures two, 15- fixed piston, 16- compressed spring, 17- spring pocket, 18- shell one, 19- deblocking pressure channel, 20- piston,
21- stopper rod, 22- deblocking spring, 23- shell two, 24- stopper rod head, 25- unseal lock hole, and 26- is blocked, and 27- unseals apocenosis passage,
28- mounting body, 29- inlet opening one, the gap 30-.
Specific embodiment
The utility model is described further below in conjunction with attached drawing:
In conjunction with attached drawing 1-3, the present embodiment includes top connection 1, lower contact 11, central tube 5, standby cap 2, packing element component and sets
The lower end of valve group, the central tube 5 is threadedly coupled with lower contact 11, and the packing element assembly set is on central tube 5, packing element
There are liquid to fill ring cavity between component and central tube 5, and the packing element component includes upper jacket 6, connection ring 7, glue on packing element
Connection ring 9 under cylinder 8, lower jacket 10 and packing element, the both ends vulcanization of the packing element 8 on packing element under connection ring 7 and packing element to connecting
On ring 9, connection ring 7 is threadedly coupled with upper jacket 6 on the packing element, connection ring 9 and 10 screw thread of lower jacket under the packing element
Connection, 5 threaded upper ends of central tube are connected with valve vector junctions 4, and 4 threaded upper ends of valve vector junctions are connected to
On connector 1, the upper jacket 6 is threaded in 4 lower end of valve vector junctions, and 4 top of valve vector junctions is provided with valve peace
Hole is filled, the axis of the valve mounting hole is parallel with the axis of valve vector junctions 4, and 4 lower part of valve vector junctions is provided with company
The channel of port valve mounting hole and liquid filling ring cavity, the valve group that sets are arranged in valve mounting hole, the seat
Envelope valve group includes mounting body 28 and sets ball-and-seat, and the mounting body 28 is provided with axial blind hole and radial through-hole, axial
Blind hole, which is connected to become with radial through-hole, sets feed pathway, the axial blind hole for setting ball-and-seat and being mounted on mounting body 28
It is interior, it is provided with 4 inner cavity of communicating valve vector junctions on the valve vector junctions 4 and sets the inlet opening 1 of feed pathway.More than
For already existing structure in the prior art, details are not described herein.
The innovative point of the utility model is: the application further includes deblocking valve group, and the valve mounting hole is no less than 2,
Valve mounting hole, which is used to install, sets valve group or deblocking valve group, and wherein at least one valve mounting hole is used to install to set valve group, until
A rare mounting hole is used to install deblocking valve group, and described setting valve group and unseal valve group is encapsulated in by the standby cap 2
In valve mounting hole, standby cap 2 is threaded in 4 upper end of valve vector junctions.
The deblocking valve group includes shell 1, shell 2 23, blocks 26, piston 20 and deblocking spring 22, described
Shell 2 23 is threaded in the lower end of shell 1, and the outer wall of shell 1 and shell 2 23 is close with valve inner wall of the hole installing respectively
The lower part of envelope connection, 2 23 outer wall of shell has diameter shrinkage part, and there are liquid out to keep in ring cavity between diameter shrinkage part and valve mounting hole,
The temporary ring cavity of liquid that goes out is connected with liquid filling ring cavity, and the closure 26 is threaded in 2 23 lower end of shell
And the outer diameter for blocking 26 is less than or equal to 2 23 outer diameter of shell, is provided with connection in the top of shell 1 and corresponding standby cap 2
The deblocking pressure channel 19 of one 18 inner cavity of shell and oil well casing, the piston 20 is arranged in shell 1, to oil well set
When applying certain hydraulic in pipe, liquid applies downward thrust to piston 20 by deblocking pressure channel 19, under piston 20
End is connected with stopper rod 21, and the lower end of stopper rod 21 is greater than the stopper rod head 24 of stopper rod 21 with outer diameter, and the stopper rod head 24 is extend into
It is slidably and sealingly connected with, is provided on the corresponding shell 2 23 in the place of being slidably and sealingly connected with and institute in shell 2 23 and with 2 23 inner wall of shell
The deblocking lock hole 25 for going out liquid and keeping in ring cavity connection stated, piston 20, stopper rod 21 and the common downlink of stopper rod head 24, when under stopper rod head 24
Row leaves when being slidingly sealed place, to be opened with shell 2 23 at sealing, and the liquid in packing element 8 can enter deblocking lock hole 25, institute
The blind hole that diameter is greater than 24 diameter of stopper rod head is provided in the closure 26 stated, in order to the stopper rod head 24 of downlink be made to possess one
Parking space, the deblocking spring 22 are arranged outside stopper rod 21, and the upper and lower ends of deblocking spring 22 are against piston 20 respectively
On shell 2 23, piston 20 has upward movement tendency under the elastic force effect of deblocking spring 22, unseals 22 lower part of spring
Corresponding shell 2 23 and valve vector junctions 4 are provided with deblocking apocenosis passage 27, and the liquid stockpiled in packing element 8 passes through deblocking lock hole 25
It is flowed out afterwards by deblocking apocenosis passage 27, realizes deblocking.After the solution seal pressure in casing removes, piston 20 again can be in deblocking bullet
The elastic force effect of spring 22 is lower to be resetted, and is prepared for deblocking next time, so this packer can be realized in the case where not rising out
Restting, and the deblocking power of this packer depends on the elastic force for the deblocking spring 22 selected, in the present embodiment, when to sleeve ring
It is intracavitary when suppressing to 2MPa, that is, the deblocking of packer is realized, solution seal pressure is small, solves inflatable packer in the prior art
Unseal difficult problem.It is also provided on the shell 2 23 for balancing the gas vent for blocking pressure in 26.
11 outer wall of lower contact is set with righting sub-assembly, and the righting sub-assembly includes righting ball seat 12, helps
Positive ball 13 and spring pocket 17,11 outer wall of lower contact have type conical bench, and the righting ball seat 12 is sleeved on taper platform
At rank, 12 inner wall of righting ball seat is connect at the big outer diameter of type conical bench by spline, and righting ball seat 12 can be relative to lower contact 11
It slides axially, ball is provided on 12 side wall of righting ball seat, the righting ball 13 is placed in ball, and the aperture on the outside of ball is small
In 13 diameter of righting ball, so that righting ball 13 can not be rolled out completely from ball, the spring pocket 17 is from lower contact 11
Lower end be sleeved in lower contact 11 and be threadedly attached in 12 lower end of righting ball seat, stayed between spring pocket 17 and lower contact 11
There is compression ring cavity, the compression ring cavity is built-in with fixed piston 15 and compressed spring 16, and the setting of compressed spring 16 exists
Between fixed piston 15 and spring pocket 17, the fixed piston 15 is threaded on 11 outer wall of lower contact, and spring pocket 17 exists
The elastic force effect of compressed spring 16 is lower to have downward movement tendency, and institute is right between the righting ball seat 12 and fixed piston 15
It is provided with inlet opening 2 14 in the lower contact 11 answered, when this packer, which is suppressed, to be set, also feed liquor, feed liquor push away inlet opening 2 14 simultaneously
12 upward sliding of righting ball seat is moved, the righting ball 13 in righting ball seat 12 is moved upwards from the bottom of type conical bench, righting ball 13
Gradually expose from ball and with internal surface of sleeve pipe sliding contact, to play the role of righting because having the function of righting, institute
With the utility model can overcome the problems, such as inclined shaft, set become etc. it is special in the case where packer setting quality it is bad.
Filter sheath 3 is set in the valve vector junctions 4, filter sheath 3 is welded on valve vector junctions 4, the mistake
Filter ruffle 3 is circumferentially uniformly provided with the gap 30 of filtration, and the position in gap 30 is corresponding with the position of inlet opening 1,
The width in gap 30 is 1-3mm in the present embodiment, can be effectively filtered the large granular impurity fallen into liquid, prevents bulky grain miscellaneous
Matter enters in packing element 8, is conducive to the service life for improving packing element 8.
Claims (2)
1. a kind of low pressure unseals amplificate packer, including top connection (1), lower contact (11), central tube (5), standby cap (2), packing element
Component and valve group is set, the lower end of the central tube (5) is threadedly coupled with lower contact (11), and the packing element assembly set is mounted in
There are liquid to fill ring cavity on central tube (5), between packing element component and central tube (5), and the packing element component includes upper jacket
(6), connection ring (9), the both ends sulphur of the packing element (8) under connection ring (7), packing element (8), lower jacket (10) and packing element on packing element
Under changing to connection ring on packing element (7) and packing element in connection ring (9), connection ring (7) and upper jacket (6) screw thread connect on the packing element
It connects, connection ring (9) is threadedly coupled with lower jacket (10) under the packing element, and the central tube (5) threaded upper ends are connected with valve
Vector junctions (4), described valve vector junctions (4) threaded upper ends are connected on top connection (1), the upper jacket (6) screw thread
It is connected to valve vector junctions (4) lower end, described valve vector junctions (4) top is provided with valve mounting hole, the valve mounting hole
Axis is parallel with the axis of valve vector junctions (4), and valve vector junctions (4) lower part is provided with communicating valve mounting hole and described
Liquid fills the channel of ring cavity, and the valve group that sets is arranged in valve mounting hole, and the valve group that sets includes mounting body
(28) and ball-and-seat is set, the mounting body (28) is provided with axial blind hole and radial through-hole, axial blind hole and radial through-hole
Connection, which becomes, sets feed pathway, and the ball-and-seat that sets is mounted in the axial blind hole of mounting body (28), the valve
It is provided with communicating valve vector junctions (4) inner cavity on vector junctions (4) and sets the inlet opening one (29) of feed pathway, feature exists
In: the application further includes deblocking valve group, and the valve mounting hole is no less than 2, and valve mounting hole is used to install to set valve group or solution
Valve group is sealed, wherein at least one valve mounting hole is used to install to set valve group, at least one mounting hole is used to install unpacking valve
Group, described setting valve group and unseal valve group are encapsulated in valve mounting hole by the standby cap (2), and standby cap (2) is threadedly coupled
In valve vector junctions (4) upper end；
The deblocking valve group includes shell one (18), shell two (23), blocks (26), piston (20) and deblocking spring (22),
The shell two (23) is threaded in the lower end of shell one (18), the outer wall of shell one (18) and shell two (23) respectively with
Valve inner wall of the hole installing is tightly connected, and the lower part of shell two (23) outer wall has diameter shrinkage part, between diameter shrinkage part and valve mounting hole
There are liquid out to keep in ring cavity, and the closure (26), which is threaded in shell two (23) lower end and blocks the outer diameter of (26), to be less than
Equal to shell two (23) outer diameter, connection shell one (18) inner cavity is provided on the top of shell one (18) and corresponding standby cap (2)
Deblocking with oil well casing presses channel (19), and the lower end of piston (20) is connected with stopper rod (21), and the lower end of stopper rod (21) has
Outer diameter is greater than the stopper rod head (24) of stopper rod (21), the stopper rod head (24) extend into shell two (23) and with shell two (23)
Inner wall is slidably and sealingly connected with, and is provided on the corresponding shell two (23) in the place of being slidably and sealingly connected with and is connected to the temporary ring cavity of liquid that goes out
Deblocking lock hole (25), the blind hole that diameter is greater than stopper rod head (24) diameter, the deblocking bullet are provided in the closure (26)
Spring (22) setting is external in stopper rod (21), and the upper and lower ends of deblocking spring (22) are against piston (20) and shell two (23) respectively
On, piston (20) has upward movement tendency under the elastic force effect of deblocking spring (22), and deblocking spring (22) lower part is corresponding
Shell two (23) side wall and valve vector junctions (4) side wall be provided with deblocking apocenosis passage (27), on the shell two (23) also
It is provided with the gas vent for balancing (26) pressure in closure；
Described lower contact (11) outer wall is set with righting sub-assembly, and the righting sub-assembly includes righting ball seat (12), helps
Positive ball (13) and spring pocket (17), the lower contact (11) outer wall have type conical bench, righting ball seat (12) suit
At type conical bench, righting ball seat (12) inner wall is connect at the big outer diameter of type conical bench by spline, and righting ball seat (12) can phase
It slides axially for lower contact (11), ball is provided on righting ball seat (12) side wall, the righting ball (13) is placed at ball
Interior, the aperture on the outside of ball is less than righting ball (13) diameter, and the spring pocket (17) is sleeved on from the lower end of lower contact (11)
In lower contact (11) and it is threadedly attached in righting ball seat (12) lower end, there are pressures between spring pocket (17) and lower contact (11)
Contracting ring cavity, the compression ring cavity are built-in with fixed piston (15) and compressed spring (16), the compressed spring (16) setting
Between fixed piston (15) and spring pocket (17), the fixed piston (15) is threaded on lower contact (11) outer wall,
Spring pocket (17) compressed spring (16) elastic force effect it is lower there is downward movement tendency, the righting ball seat (12) with consolidate
Inlet opening two (14) is provided in corresponding lower contact (11) between fixed piston (15).
2. a kind of low pressure according to claim 1 unseals amplificate packer, it is characterised in that: the valve vector junctions
(4) it is set with filter sheath (3) in, filter sheath (3) is welded on valve vector junctions (4), and the filter sheath (3) is circumferentially uniform
The gap (30) for being provided with filtration, the position of gap (30) is corresponding with inlet opening one (29) position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920224355.7U CN209724288U (en) | 2019-02-22 | 2019-02-22 | Low pressure unseals amplificate packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920224355.7U CN209724288U (en) | 2019-02-22 | 2019-02-22 | Low pressure unseals amplificate packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209724288U true CN209724288U (en) | 2019-12-03 |
Family
ID=68683591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920224355.7U Active CN209724288U (en) | 2019-02-22 | 2019-02-22 | Low pressure unseals amplificate packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209724288U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111472714A (en) * | 2020-04-13 | 2020-07-31 | 陈少同 | Packer |
| CN115075767A (en) * | 2021-03-15 | 2022-09-20 | 中国石油天然气股份有限公司 | Packer and sealing method |
| CN117738613A (en) * | 2024-02-20 | 2024-03-22 | 东营市华科石油科技开发有限责任公司 | Long-acting double-rubber-cylinder double-deblocking expanding packer |
-
2019
- 2019-02-22 CN CN201920224355.7U patent/CN209724288U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111472714A (en) * | 2020-04-13 | 2020-07-31 | 陈少同 | Packer |
| CN115075767A (en) * | 2021-03-15 | 2022-09-20 | 中国石油天然气股份有限公司 | Packer and sealing method |
| CN115075767B (en) * | 2021-03-15 | 2023-09-26 | 中国石油天然气股份有限公司 | Packer and sealing method |
| CN117738613A (en) * | 2024-02-20 | 2024-03-22 | 东营市华科石油科技开发有限责任公司 | Long-acting double-rubber-cylinder double-deblocking expanding packer |
| CN117738613B (en) * | 2024-02-20 | 2024-04-30 | 东营市华科石油科技开发有限责任公司 | Long-acting double-rubber-cylinder double-deblocking expanding packer |
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