CN207686663U - Inflatable packer - Google Patents
Inflatable packer Download PDFInfo
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- CN207686663U CN207686663U CN201721367372.3U CN201721367372U CN207686663U CN 207686663 U CN207686663 U CN 207686663U CN 201721367372 U CN201721367372 U CN 201721367372U CN 207686663 U CN207686663 U CN 207686663U
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Abstract
The utility model discloses a kind of inflatable packers, including：Top connection (1), the core pipe (2) being connect with top connection (1), it is set in core pipe (2), and with top connection (1) be tightly connected packing element mechanism (3), and with packing element mechanism (3) be tightly connected lower contact (4)；Packing element mechanism (3) includes：Packing element (301), the first packing element set (302) being tightly connected with the first end (3011) of packing element, first packing element set (302) is also tightly connected with top connection (1), and the second packing element set (303) with second end (3012) sealed connection of packing element, the second packing element set (303) are also tightly connected with lower contact (4)；Inflatable packer further includes：The madial wall of lower contact (4) and the setting runner (401) of upper surface are run through, the check valve (5) being set in setting runner (401).The inflatable packer is suitable for water injection work.
Description
Technical field
The utility model is related to a kind of inflatable packers.
Background technology
Packer and is insulated whereby between various sizes tubing string and wellbore and between tubing string with elastic packing tool
Annular space, and completely cut off payzone, (note) liquid, the downhole tool of protection sleeve pipe are produced with control.It is different according to the expansion fashion of packing element,
Packer can be divided into compression packer and inflatable packer.The packing element of wherein inflatable packer is expanded by hydraulic action
Afterwards, big with the contact area of the inner wall of pit shaft, therefore packer set is more secured.
The structure of existing inflatable packer refers to Fig. 1, which includes：Top connection 1, with top connection
The core pipe 2 of 1 connection, core pipe 2 is with slot 203, the packing element mechanism 3 being set in core pipe 2, the lower contact 4 being connect with core pipe 2,
Packing element mechanism 3 includes：Packing element 301, the first packing element set 302, upper end and the top connection 1 of the first packing element set 302 are tightly connected, and first
The lower end of packing element set 302 is tightly connected with packing element 301, the second packing element set 303, and the upper end of the second packing element set 303 and packing element 301 are close
Envelope connection, lower end are tightly connected with lower contact 4.When beating hydraulic pressure to the inflatable packer, hydraulic pressure enters packing element from slot 203
Between 301 and core pipe 2, packing element 301 is made to expand, to which inflatable packer is setting on casing.But it is off after beating hydraulic pressure,
Fluid between core pipe 2 and packing element 301 will be flowed out from slot 203, and packing element 301 is shunk, inflatable packer deblocking,
Therefore, existing inflatable packer can only be temporarily setting on pit shaft by tubing string, is chiefly used in fracturing work, and is requiring tubing string
Continue in setting operation, it is as limited in used in water injection work.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of inflatable packer suitable for water injection work.Technology
Scheme is as follows：
A kind of inflatable packer, the inflatable packer include：
Top connection,
The core pipe being connect with top connection,
The packing element mechanism for being set in the core pipe, and being tightly connected with the top connection, and
The lower contact being tightly connected with the core pipe and the packing element mechanism；
Wherein,
The packing element mechanism includes：
Packing element, the packing element have the first end of packing element and the second end of packing element,
The first packing element set being tightly connected with the first end of the packing element, the first packing element set are also close with the top connection
Envelope connection, and
The second packing element set being tightly connected with the second end of the packing element, the second packing element set are also close with the lower contact
Envelope connection；
The inflatable packer further includes：
The madial wall of the lower contact and the setting runner of upper surface are run through,
The check valve being set in setting runner.
Preferably, the first packing element set includes：
The first fixed ring being tightly connected with the top connection, and
The first end of the first baffle ring being connect with first fixed ring, first baffle ring and the packing element, which is fixed, to be connected
It connects, first baffle ring is also tightly connected with the core pipe.
It is highly preferred that the core pipe includes：
The inner core tube being connect with the top connection,
The outer core pipe being connect with the top connection, and
The first annular space between the inner core tube and outer core pipe,
Wherein,
The packing element mechanism is set on outer core pipe,
The axial length of outer core pipe is less than the axial length of the inner core tube,
Outer core pipe and the inner core tube respectively in the top of the entrance positioned at the setting runner of lower contact
Side wall is tightly connected,
There is the second annular space between the inner core tube and the lower contact,
Second annular space is connected to the setting runner.
It is highly preferred that the first packing element set has the first inlet opening,
There is outer core pipe the second inlet opening, second inlet opening to be connected to first annular space,
The lower contact has the first fluid hole for being connected to first annular space, first fluid hole not with the seat
Seal runner connection.
It is highly preferred that the packer further includes：
It is set between outer core pipe and first packing element set, and relative to both described sliding, to seal simultaneously
Sliding sleeve that is stifled or unsealing first inlet opening and second inlet opening.
It is highly preferred that being provided with seal member in first annular space, the seal member is located at second feed liquor
The top in hole.
It is highly preferred that it is provided with third inlet opening on the side wall of the inner core tube being located above the seal member,
It is provided with the 4th inlet opening on the side wall of outer core pipe being located above the seal member,
The sliding sleeve can block the 4th inlet opening.
It is highly preferred that first inlet opening, second inlet opening and first fluid hole are multiple.
It is highly preferred that the packer further includes：The first spacing ring being arranged in the top connection.
It is highly preferred that the lower end of the inner core tube is provided with the second spacing ring coordinated with the lower contact.
The advantageous effect of technical solution that the utility model embodiment provides is：By the expanding of the utility model embodiment
The top connection of packer is connect with tubing string, and the tubing string tripping in of inflatable packer will be connected with to precalculated position from well head, then from
Well head beats hydraulic pressure into tubing string, and fluid enters the inside of inflatable packer from the core pipe of inflatable packer, and by perforation
In the open-top check valve of setting runner of the madial wall and upper surface of lower contact, flow between core pipe and packing element, due to the first packing element
Set is tightly connected with the first end of packing element and top connection and the second packing element set connects with the second end of packing element and lower contact sealing
It connects so that fluid resides between packing element and core pipe, constantly to fluid is injected between core pipe and packing element, in the liquid continued to increase
Under pressure effect, radial dilatation occurs for packing element, to make packer set on pit shaft.Stop beating hydraulic pressure into tubing string, in packing element
Under the promotion of fluid between core pipe, closed check valve so that fluid resides between packing element and core pipe always, and packing element is always
In expansion state, inflatable packer is setting still on the inner wall of pit shaft.As it can be seen that the inflatable packer of present embodiment
Suitable for water injection work, when stopping water filling, which still can be setting on pit shaft.
Description of the drawings
Fig. 1 is the schematic diagram of existing inflatable packer.
Fig. 2 is the schematic diagram of the inflatable packer of the utility model the first embodiment, wherein inflatable packer
In not setting state.
Fig. 3 is the schematic diagram of the inflatable packer of second of embodiment of the utility model, wherein inflatable packer
In not setting state.
Fig. 4 is the enlarged drawing at A in Fig. 3.
Fig. 5 is the enlarged drawing at B in Fig. 3.
Fig. 6 and Fig. 7 is the unset state figure of the inflatable packer of second of embodiment of the utility model, wherein Fig. 6
Show that the unset state at A in Fig. 3, Fig. 7 are the unset state at B in Fig. 3.
Reference numeral in figure indicates respectively：
1, top connection；
2, core pipe；
201, inner core tube；2011, third inlet opening；2012, the second spacing ring；
202, outer core pipe；2021, the second inlet opening；2022, the 4th inlet opening；2023, third spacing ring；
X, the first annular space；
3, packing element mechanism；
301, packing element；3011, the first end of packing element；3012, the second end of packing element；
302, the first packing element set；3021, the first fixed ring；3022, the first baffle ring；3023, the first inlet opening；
303, the second packing element set；
4, lower contact；401, setting runner；4011, the entrance of setting runner；402, the first fluid hole；
Y, the second annular space；
5, check valve；
6, seal member；
7, the first spacing ring；
8, pin
9, sliding sleeve.
Specific implementation mode
To keep the technical solution of the utility model and advantage clearer, the utility model is implemented below in conjunction with attached drawing
Mode is described in further detail.
The first embodiment
The first embodiment of the utility model provides a kind of inflatable packer.Fig. 2 is referred to, Fig. 2 is that this practicality is new
The schematic diagram of the inflatable packer of the first embodiment of type, wherein inflatable packer are in not setting state.Such as Fig. 2 institutes
Show, the inflatable packer of the first embodiment includes：Top connection 1, the core pipe 2 being connect with top connection 1, is set in core pipe 2
On, and the packing element mechanism 3 being tightly connected with top connection 1, and the lower contact 4 with core pipe 2 and the sealed connection of packing element mechanism 3；
Wherein, packing element mechanism 3 includes：Packing element 301, packing element 301 have the first end 3011 of packing element and the second end 3012 of packing element,
The the first packing element set 302 being tightly connected with the first end 3011 of packing element, the first packing element set 302 are also tightly connected with top connection 1, with
And the second packing element set 303 with the sealed connection of second end 3012 of packing element, the second packing element set 303 are also tightly connected with lower contact 4；
The madial wall of lower contact 4 and the setting runner 401 of upper surface are run through, the check valve 5 being set in setting runner 401.
The operation principle of the inflatable packer of the first embodiment of the utility model is：
As shown in Fig. 2, the top connection 1 of the inflatable packer of present embodiment is connect with tubing string, will be connected from well head
There is the tubing string tripping in of inflatable packer to precalculated position, hydraulic pressure is beaten into tubing string from well head, fluid is from inflatable packer
Core pipe 2 enters the inside of inflatable packer, and the setting runner 401 by running through the madial wall and upper surface of lower contact 4
Open-top check valve 5 flows between core pipe 2 and packing element 301, since the first packing element covers the first end 3011 of 302 and packing element and above connects
First 1 sealed connection and the second packing element set 303 are tightly connected with the second end 3012 of packing element and lower contact 4 so that fluid is resident
Between packing element 301 and core pipe 2, fluid constantly is injected between core pipe 2 and packing element 301, in the hydraulic action continued to increase
Under, radial dilatation occurs for packing element 301, to make packer set on pit shaft.Stop beating hydraulic pressure into tubing string, in packing element 301
Under the promotion of fluid between core pipe 2, check valve 5 is closed so that fluid is resided in always between packing element 301 and core pipe 2, glue
Cylinder 301 is constantly in expansion state, and inflatable packer is setting still on the inner wall of pit shaft.As it can be seen that the expansion of present embodiment
It opens formula packer and is suitable for water injection work, when stopping water filling, which still can be setting on pit shaft.
When the check valve 5 of the inflatable packer of present embodiment realizes the injection fluid between packing element 301 and core pipe 2,
Check valve 5 is opened, and when stopping injection fluid, check valve 5 is closed, and the fluid between packing element 301 and core pipe 2 is sealed.Such as
The form of valve seat and valve ball cooperation may be used in the structure of the check valve, and valve ball can pass through elastomeric element (such as spring) and valve body
Connection, to realize that valve ball automatically resets.Fluid is open-top by valve ball when to fluid is injected between packing element 301 and core pipe 2, and fluid is suitable
Profit enters wherein, and when stopping injection fluid, fluid between by packing element 301 and core pipe 2 acts on, and valve ball seat is enclosed on valve seat,
Fluid between by packing element 301 and core pipe 2 will not be flowed out from setting runner 401, and packing element 301 is constantly in expansion state, to
Inflatable packer is setting on pit shaft always.
Fig. 3 is referred to, Fig. 3 is the schematic diagram of the inflatable packer of second of embodiment of the utility model, wherein expanding
It opens formula packer and is in not setting state.As shown in figure 3, the first packing element set 302 of the inflatable packer of present embodiment can
To include：The first fixed ring 3021 being tightly connected with top connection 1, and the first baffle ring for being connect with the first fixed ring 3021
3022, the first baffle ring 3022 is fixedly connected with the first end 3011 of packing element, and the first baffle ring 3022 is also tightly connected with core pipe 2.This
Second packing element of the inflatable packer of embodiment covers 303：The second fixed ring being tightly connected with lower contact 4
3031, and with the second fixed ring 3031 be tightly connected the second baffle ring 3032, the second baffle ring 3032 also with the second end of packing element
3012 are fixedly connected.So that packing element 301 and core pipe 2 form close closed space, making to be infused in fluid therein will not leak, with
The expansion state for keeping packing element 301, so that inflatable packer is setting on the side wall of pit shaft.
Continuing with referring to Fig. 3, in the present embodiment, inflatable packer can also include：It is arranged in top connection 1
First spacing ring 7.When beating hydraulic pressure, packing element 301 is expanded by Fluid pressure from below to radial direction, while can be in axial direction
On to pushing the first packing element set 302 to generate upward impetus so that the movement slightly upward of the first packing element set 302, in this way meeting
It threatens with 301 junction of packing element to the first packing element set 302, it is likely that weaken the close of the first packing element 302 pairs of packing elements 301 of set
Envelope and fixed function, or even junction disengaging of the first packing element set 302 with packing element 301 occurs, cause setting failure.First limit
Ring 7 can prevent the first packing element set 302 from moving further up, to effectively prevent the company of the first packing element set 302 and packing element 301
The place of connecing is detached from, it is ensured that the inflatable packer of present embodiment is smoothly setting on pit shaft.
First packing element of the inflatable packer of present embodiment cover 302 (or first fixed rings 3021) can with above connect
First 1 is connected by pin, in deblocking, above puts on connector 1, is fixedly connected with 302 (or the first fixed ring of the first packing element set
3021) pin with top connection 1 is cut, and the inner core tube 201 and outer core pipe 202 being connect with top connection 1 rise therewith, outer core pipe
202 lower face goes upward to the top of check valve 5, and the fluid outflow between 301 outer core pipe 202 of packing element, packing element 301 is received
Contracting, inflatable packer deblocking.
Second of embodiment
Second of embodiment of the utility model provides another inflatable packer.Fig. 3 is referred to, Fig. 3 is this practicality
The schematic diagram of the inflatable packer of novel second of embodiment, wherein inflatable packer are in not setting state.Such as Fig. 3
Shown, the inflatable packer of second of embodiment includes：Top connection 1, the core pipe 2 being connect with top connection 1, is set in core pipe
On 2, and the packing element mechanism 3 being tightly connected with top connection 1, and the lower contact 4 with core pipe 2 and the sealed connection of packing element mechanism 3；
Wherein, packing element mechanism 3 includes：Packing element 301, packing element 301 have the first end 3011 of packing element and the second end 3012 of packing element,
The the first packing element set 302 being tightly connected with the first end 3011 of packing element, the first packing element set 302 are also tightly connected with top connection 1, with
And the second packing element set 303 with the sealed connection of second end 3012 of packing element, the second packing element set 303 are also tightly connected with lower contact 4；
The madial wall of lower contact 4 and the setting runner 401 of upper surface are run through, the check valve 5 being set in setting runner 401, core pipe 2
Including：The inner core tube 201 being connect with top connection 1, the outer core pipe 202 being connect with top connection 1, and positioned at inner core tube 201 and outside
The first annular space X between core pipe 202, wherein packing element mechanism 3 is set in outer core pipe 202, and the axial length of outer core pipe 202 is small
In the axial length of inner core tube 201, outer core pipe 202 and inner core tube 201 respectively with the entrance positioned at setting runner of lower contact 4
The madial wall of 4011 top is tightly connected, and has the second annular space Y, the second annular space Y and seat between inner core tube 202 and lower contact 4
Runner 401 is sealed to be connected to.
The operation principle of second of embodiment of the utility model is：
As shown in figure 3, the top connection 1 of the inflatable packer of present embodiment is connect with tubing string, will be connected from well head
There is the tubing string tripping in of inflatable packer to precalculated position, hydraulic pressure is beaten into tubing string from well head, fluid is from inflatable packer
Core pipe 2 enters the inside of inflatable packer, and is flowed into the setting runner 401 communicated therewith from the second annular space Y, and fluid is open-top
Check valve 5 flows between packing element 301 and outer core pipe 202, since the first packing element set 302 is tightly connected with top connection 1, the second glue
Jacket casing 303 is tightly connected with lower contact 4, and outer core pipe 202 and inner core tube 201 are respectively with lower contact 4 positioned at setting runner
Entrance 4011 top madial wall be tightly connected so that fluid resides between packing element 301 and outer core pipe 202, continuous
Under increased hydraulic action, packing element 301 is expanded to radial direction, to which inflatable packer is setting on pit shaft.Stop to
Hydraulic pressure is beaten in tubing string, under the promotion of the fluid between packing element 301 and outer core pipe 202, check valve 5 is closed so that fluid is resident
Between packing element 301 and outer core pipe 202, packing element 301 is constantly in expansion state, and inflatable packer is setting still in pit shaft
On inner wall.As it can be seen that the inflatable packer of present embodiment is suitable for water injection work, and when stopping water filling, expanding packing
Device still can be setting on pit shaft.
Refer to Fig. 3, Fig. 4 and Fig. 5, wherein Fig. 4 is the enlarged drawing at A in Fig. 3；Fig. 5 is the enlarged drawing at B in Fig. 3.
As shown in Figures 3 to 5, in the present embodiment, the first packing element set 302 of the inflatable packer has the first inlet opening
3023, outer core pipe 202 has the second inlet opening 2021, and the second inlet opening 2021 is connected to the first annular space X, lower contact 4 with
First fluid hole 402 of the first annular space X connections, the first fluid hole 402 are not connected to setting runner 401.In backwash well operations,
The water filling between pit shaft and tubing string, water flow successively through from the first inlet opening 3023, the second inlet opening 2021, the first annular space X, from
One fluid hole 402 flows out the inflatable packer of present embodiment, is back in tubing string from lower contact 4 later, is carried out to tubing string
Backwash well operations are realized in cleaning.As it can be seen that the inflatable packer of present embodiment can realize anti-flushing well well without deblocking
Operation.
In the present embodiment, the first inlet opening 3023, the second inlet opening 2021 and the first fluid hole 402 can be
It is multiple.Further, radially uniform distribution of multiple first inlet openings 3023 along the first packing element set 302；Multiple second inlet openings
2021 along outer core pipe 202 radially uniform distribution；Radially uniform distribution of multiple first fluid holes 402 along lower contact 4.
In the present embodiment, on the basis of the inflatable packer has the function of anti-flushing well, further, such as Fig. 3
Shown, which further includes：It is set between outer core pipe 202 and the first packing element set 302, and slided relative to the two
It is dynamic, to block or unseal the sliding sleeve 9 of the first inlet opening 3023 and the second inlet opening 2021 simultaneously.Backwash well operations are not being needed
When, sliding sleeve 9 will be by formation such as the first inlet opening 3023, the second inlet opening 2021, the first annular space X and the first fluid holes 402
Anti-flushing well channel is closed.In backwash well operations, by the pressure of the water between tubing string and pit shaft, 9 upward sliding of sliding sleeve, water
It is flowed into the first annular space X from the first inlet opening 3023 and the second inlet opening 2021, then realizes that above-mentioned mentioned anti-flushing well is made
Industry.
Fig. 4 is referred to, outer core pipe 202 has the third spacing ring 2023 that the upper surface of sliding sleeve 9 abuts against, in anti-flushing well
When, the water injected between tubing string and pit shaft enters from the first inlet opening 3023, and 9 upward sliding of sliding sleeve, sliding sleeve 9 is then pushed to slide
It moves to the lower face of end face thereon and third spacing ring 2023 when abutting against, stops upward sliding, so third spacing ring 2023
The distance of 9 upward sliding of sliding sleeve can be controlled.
As shown in figure 4, the inflatable packer of present embodiment further includes, seal member is provided in the first annular space X
6, seal member 6 is located at the top of the second inlet opening 2021.On this basis, being located above seal member 6 in inner core tube 201
Side wall on be provided with third inlet opening 2011, outer core pipe 202 be located at seal member 6 above side wall on be provided with the 4th
Inlet opening 2022.Seal member 6 is not so that the first annular space X is connected to third inlet opening 2011 and the 4th inlet opening 2022.From
Fluid flows into the inner core tube 201 of the inflatable packer of present embodiment when well head beats hydraulic pressure to tubing string, and a part of fluid flows into
Setting channel 401, also sub-fraction fluid flow into the first packing element set 302 from third inlet opening 2011 and the 4th inlet opening 2022
(or first fixed ring 3021) generates sliding sleeve 9 downward thrust between outer core pipe 202, sliding sleeve 9 to packing element 301 generate to
Under thrust, upward thrust generates packing element 301 with the fluid that balance flows between outer core pipe 202 and packing element 301, thus with
When preventing packing element 301 from radial dilatation occurs, the first packing element set 302 is pushed to move upwards, and influences the setting of inflatable packer
Effect.
As shown in figure 4, the 4th inlet opening 2022 is located at the lower section of third spacing ring 2023, preferably, the 4th inlet opening
2022 would not block the 4th inlet opening 2022 close to third spacing ring 2023, such sliding sleeve 9 so that when beating hydraulic pressure, fluid
The first packing element can be flowed by third inlet opening 2011 and the 4th inlet opening 2022 cover 302 (or first fixed rings 3021) and outer core
Between pipe 202,9 slide downward of sliding sleeve is pushed, then blocks the first inlet opening 3023 so that fluid will not be from the first inlet opening
3023 release, and smoothly complete setting work.
It will be appreciated by those skilled in the art that the seal member 6 in present embodiment can be with inner core tube 201
Integral structure, seal member 6 can be the annular protrusion of inner core tube 201, be realized in the top of the first annular space X and outer core pipe 202
Sealing；Or seal member 6 can be the annular protrusion of outer core pipe 202, be realized in the top of the first annular space X and inner core tube 201
Sealing.
In the present embodiment, Fig. 6 and Fig. 7, Fig. 6 and the expansion that Fig. 7 is second of embodiment of the utility model are referred to
The unset state figure of formula packer is opened, wherein Fig. 6 shows that the unset state at A in Fig. 3, Fig. 7 are the unset state at B in Fig. 3.
As shown in Figure 6 and Figure 7, the first packing element set 302 can be sealedly and fixedly connected by pin 8 and top connection 1, under inner core tube 201
End is provided with the second spacing ring 2012 coordinated with lower contact 4.In deblocking, connector 1 is above put on, the first packing element set is fixedly connected with
302 are cut with the pin 8 of top connection 1, and the inner core tube 201 and outer core pipe 202 being connect with top connection 1 rise therewith, outer core pipe
202 are not tightly connected with lower contact 4, seam of the fluid between 301 outer core pipe 202 of packing element from outer core pipe 202 and lower contact 4
Clearance flow goes out, and packing element 301 is shunk, and continues up until the lower face of outer core pipe 4 is located at the top of check valve 5, inner core tube 201
It goes upward to the second spacing ring 2012 to abut against with lower contact 4, the rate of outflow of fluid is accelerated, the final inflatable packer solution
Envelope.Inner core tube 201 goes upward to the second spacing ring 2012 and is abutted against with lower contact 4, top connection 1 no longer relative to packing element mechanism 3 to
Upper movement avoids top connection 1 and core pipe 2 from being detached from packing element mechanism 3.
The above is merely for convenience of it will be understood by those skilled in the art that the technical solution of the utility model, not to
Limit the utility model.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of inflatable packer, the inflatable packer include：
Top connection (1),
The core pipe (2) being connect with top connection (1),
The packing element mechanism (3) for being set in the core pipe (2), and being tightly connected with the top connection (1), and
The lower contact (4) being tightly connected with the core pipe (2) and the packing element mechanism (3)；
Wherein,
The packing element mechanism (3) includes：
Packing element (301), the packing element (301) have the first end (3011) of packing element and the second end (3012) of packing element,
The first packing element set (302) being tightly connected with the first end (3011) of the packing element, the first packing element set (302) also with
The top connection (1) is tightly connected, and
The second packing element set (303) being tightly connected with the second end (3012) of the packing element, the second packing element set (303) also with
The lower contact (4) is tightly connected；
It is characterized in that,
The inflatable packer further includes：
The madial wall of the lower contact (4) and the setting runner (401) of upper surface are run through,
The check valve (5) being set in setting runner (401).
2. inflatable packer according to claim 1, which is characterized in that the first packing element set (302) includes：
The first fixed ring (3021) being tightly connected with the top connection (1), and
The first baffle ring (3022) being connect with first fixed ring (3021), first baffle ring (3022) and the packing element
First end (3011) is fixedly connected, and first baffle ring (3022) is also tightly connected with the core pipe (2).
3. inflatable packer according to claim 1 or 2, which is characterized in that
The core pipe (2) includes：
The inner core tube (201) being connect with the top connection (1),
The outer core pipe (202) being connect with the top connection (1), and
The first annular space (X) between the inner core tube (201) and outer core pipe (202),
Wherein,
The packing element mechanism (3) is set on outer core pipe (202),
The axial length of outer core pipe (202) is less than the axial length of the inner core tube (201),
Outer core pipe (202) and the inner core tube (201) respectively with the entrance positioned at the setting runner of lower contact (4)
(4011) madial wall of top is tightly connected,
There is the second annular space (Y) between the inner core tube (202) and the lower contact (4),
Second annular space (Y) is connected to the setting runner (401).
4. inflatable packer according to claim 3, which is characterized in that
The first packing element set (302) has the first inlet opening (3023),
Outer core pipe (202) has the second inlet opening (2021), second inlet opening (2021) and first annular space (X)
Connection,
The lower contact (4) has the first fluid hole (402) being connected to first annular space (X), first fluid hole
(402) it is not connected to the setting runner (401).
5. inflatable packer according to claim 4, which is characterized in that the packer further includes：
It is set between outer core pipe (202) and the first packing element set (302), and relative to outer core pipe (202)
It is slided with the first packing element set (302), to block or unseal first inlet opening (3023) and second feed liquor simultaneously
The sliding sleeve (9) in hole (2021).
6. inflatable packer according to claim 4, which is characterized in that be provided in first annular space (X) close
Component (6) is sealed, the seal member (6) is located at the top of second inlet opening (2021).
7. inflatable packer according to claim 4, which is characterized in that first inlet opening (3023), described
Two inlet openings (2021) and first fluid hole (402) are multiple.
8. inflatable packer according to claim 5, which is characterized in that
It is provided with third inlet opening (2011) on the side wall of the inner core tube (201) being located above the seal member (6),
It is provided with the 4th inlet opening (2022) on the side wall of outer core pipe (202) being located above the seal member (6),
The sliding sleeve (9) can block the 4th inlet opening (2022).
9. inflatable packer according to claim 1, which is characterized in that the packer further includes：It is arranged described
The first spacing ring (7) in top connection (1).
10. inflatable packer according to claim 3, which is characterized in that the lower end of the inner core tube (201) is provided with
With the second spacing ring (2012) of the lower contact (4) cooperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721367372.3U CN207686663U (en) | 2017-10-23 | 2017-10-23 | Inflatable packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721367372.3U CN207686663U (en) | 2017-10-23 | 2017-10-23 | Inflatable packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207686663U true CN207686663U (en) | 2018-08-03 |
Family
ID=62989036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721367372.3U Active CN207686663U (en) | 2017-10-23 | 2017-10-23 | Inflatable packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207686663U (en) |
-
2017
- 2017-10-23 CN CN201721367372.3U patent/CN207686663U/en active Active
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