CN206071531U - Fireflood bridging plug - Google Patents
Fireflood bridging plug Download PDFInfo
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- CN206071531U CN206071531U CN201621022182.3U CN201621022182U CN206071531U CN 206071531 U CN206071531 U CN 206071531U CN 201621022182 U CN201621022182 U CN 201621022182U CN 206071531 U CN206071531 U CN 206071531U
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- central canal
- piston
- bridging plug
- outside
- outer tube
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Abstract
A kind of fireflood bridging plug of disclosure, including：Central canal；The piston being sheathed on outside the central canal；The piston can suppress outside well effect lower edge described in central canal move down；With the central canal lower end by breaking the base that bar is connected；The base is sealed condition；The bar of breaking can be pulled off；The outer tube being sheathed on outside the central canal；The lower end of the outer tube is fixedly connected with the base；Grappling sealing mechanism is arranged with outside the outer tube；The grappling sealing mechanism is located between the piston and the base；When moving down the grappling sealing mechanism grappling can set the piston.The fireflood bridging plug that the application is provided can adapt to adapt to the work of fireflood heavy crude producing.
Description
Technical field
The application is related to oilfield exploitation downhole tool field, more particularly to a kind of fireflood bridging plug.
Background technology
Liaohe Oil Field is the maximum viscous crude production base of China, and heavy oil production accounts for the 60% of total output, most of at present
Block is in the steam injection development later stage, and exploitation difficulty increases, and it is a kind of effective that fireflood is taken over development scheme as which
Means.
Fireflood is to light oil reservoir by artificial or spontaneous manner, and continues to make Crude Oil to oil reservoir injection air or oxygen
Sustained combustion, the heavies in crude oil produce a large amount of heat energy and combustion tail gas Jing after burning, drive the light fraction in crude oil
Producing well is together flowed to water, is produced from oil well together.
Due to down-hole, during burning, temperature drastically can be raised, and conventional is bridging plug (packer) it is difficult to so high again
Normal work under the environment of temperature.
Utility model content
In view of the above problems, the application is necessary to provide a kind of fireflood bridging plug, thick can adapt to adaptation fireflood exploitation
Oil work.
To reach above-mentioned purpose, the application provides a kind of fireflood bridging plug, including：
Central canal；
The piston being sheathed on outside the central canal；The piston can suppress central canal described in effect lower edge outside well to moving down
It is dynamic；
With the central canal lower end by breaking the base that bar is connected；The base is sealed condition；The bar of breaking can
It is pulled off；
The outer tube being sheathed on outside the central canal；The lower end of the outer tube is fixedly connected with the base；Outside the outer tube
It is arranged with grappling sealing mechanism；The grappling sealing mechanism is located between the piston and the base；The piston is to moving down
When dynamic the grappling sealing mechanism grappling can set.
As it is a kind of preferred embodiment, the grappling sealing mechanism includes upper slipses and lower slipses, on described
Upper cone below slips, the lower cone above the lower slipses；It is provided with resistance between the upper slipses and the lower slipses
High temperature packing element.
As one kind preferred embodiment, the upper cone and the lower cone are connected by shear pin with the outer tube
Connect.
As one kind preferred embodiment, locking member, the locking are provided between the outer tube and the upper cone
Part is prevented from moving on the upper cone.
As one kind preferred embodiment, the locking member includes the locking tube that fixation is set in outside the outer tube,
The outer wall of the locking tube is provided with the first helical teeth；The inner surface of the upper cone is provided with the coordinated with first helical teeth
Two helical teeth.
As one kind preferred embodiment, pressure pipe is arranged with outside the central canal；The lower surface contact institute of the pressure pipe
State the upper surface of upper slipses；The lower end of the piston is extend in the annular space between the pressure pipe and the central canal.
As one kind preferred embodiment, the central canal includes pull bar, the connecting rod being from top to bottom sequentially connected；Institute
State outer tube sleeve to be located at outside the connecting rod.
As one kind preferred embodiment, it is described to break bar for copper bar.
Preferred embodiment the tail for being blocked is provided with the base and is blocked up as a kind of, the tail is stifled be located at it is described
Break the lower section of bar.
As one kind preferred embodiment, between the high temperature resistant packing element and the upper cone, the lower cone respectively
It is provided with spacer ring.
As one kind preferred embodiment, the upper end of the piston is connected with connecting tube.
By above description as can be seen that the fireflood bridging plug that provided of present embodiment, by adopting under mobile piston
Pressure grappling sealing sets, it is ensured that the effect that grappling sets, meanwhile, using bar connection central canal and base is broken, so as to only lead to
Cross the outer upper lifting pipe post of well to be capable of achieving to give up, therefore, the fireflood bridging plug provided by present embodiment can adapt to adapt to fireflood
Exploitation work.
With reference to explanation hereinafter and accompanying drawing, particular implementation of the present utility model is disclose in detail, specified practical
New principle can be in adopted mode.It should be understood that embodiment of the present utility model not thus is subject in scope
Limit.In the range of the spirit and terms of claims, embodiment of the present utility model includes many changes, modifications
And equivalent.
The feature for describing for a kind of embodiment and/or illustrating can be in same or similar mode one or more
It is used in individual other embodiment, combined with the feature in other embodiment, or substitute the feature in other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when using herein, but and
It is not excluded for the presence of one or more further features, one integral piece, step or component or additional.
Description of the drawings
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or accompanying drawing to be used is briefly described needed for description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those skilled in the art, without having to pay creative labor,
Can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is the bridging plug structural representation that a kind of embodiment of the application is provided.
Specific embodiment
In order that those skilled in the art more fully understand the technical scheme in the application, below in conjunction with the application reality
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described enforcement
Example is only some embodiments of the present application, rather than the embodiment of whole.Based on the embodiment in the application, this area is common
The every other embodiment obtained on the premise of creative work is not made by technical staff, should all belong to this practicality new
The scope of type protection.
It should be noted that when element is referred to as " being arranged at " another element, it can directly on another element
Or can also there is element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or may be simultaneously present centering elements.Term as used herein " vertical ", " level ", " left side ",
For illustrative purposes only, it is unique embodiment to be not offered as " right side " and similar statement.
Unless otherwise defined, all of technology used herein and scientific terminology are led with technology of the present utility model is belonged to
The implication that the technical staff in domain is generally understood that is identical.In term used in the description of the present utility model it is simply herein
The purpose of description specific embodiment, it is not intended that in limiting this utility model.Term as used herein "and/or" bag
Include the arbitrary and all of combination of one or more related Listed Items.
Fig. 1 is referred to, for a kind of fireflood bridging plug that a kind of embodiment of the application is provided, the bridging plug is referred to as bridge
Plug packer.The bridging plug is adaptable to heavy crude producing under hot environment.
In the present embodiment, the fireflood is included with bridging plug：Central canal 1；The piston 2 being sheathed on outside the central canal 1；
The piston 2 can suppress outside well effect lower edge described in central canal 1 move down；With 1 lower end of the central canal by breaking bar 7
The base 3 of connection；The base 3 is sealed condition；The bar 7 of breaking can be pulled off；The outer tube being sheathed on outside the central canal 1
10；The lower end of the outer tube 10 is fixedly connected with the base 3；Grappling sealing mechanism is arranged with outside the outer tube 10；The anchor
Determine sealing mechanism to be located between the piston 2 and the base 3；The piston 2 can make the grappling sealer when moving down
Structure grappling sets.
When in use, precalculated position in well is lowered into by connected pipes, puts into ball sealer 17, suppressed by the outer water filling of well
Piston 2 is made axially to move down along central canal 1, piston 2 continues to suppress when moving down into grappling sealing mechanism, piston 2 promotes grappling sealing
Bloated organizational structure and staff sets, and completes packing.
When giving up, by the outer upper lifting pipe post of well, so as to drive central canal 1 up, central canal 1 will under certain pulling force effect
Break bar 7 to break, realize that central canal 1 is separated with base 3 and grappling sealing mechanism.Carry in continuation, central canal 1, piston 2 are carried
Go out outside well, remainder is stayed in, and completes to give up.
In addition, when subsequent job deblocking bridging plug is needed, the part remained in well being bored by drilling tool and be removed.
By above description as can be seen that the fireflood bridging plug that provided of present embodiment, by adopting under mobile piston 2
Pressure grappling sealing sets, it is ensured that the effect that grappling sets, meanwhile, using the connection of bar 7 central canal 1 and base 3 is broken, so as to only
It is capable of achieving to give up by the outer upper lifting pipe post of well, therefore, the fireflood bridging plug provided by present embodiment can adapt to adapt to fire
Drive exploitation work.
In the present embodiment, central canal 1 is straight tube, and which can be constituted for single body, or multiple bodys are suitable
Secondary to connect and compose, the application is simultaneously not intended to be limited in any.As shown in figure 1, the central canal 1 can include from top to bottom being sequentially connected
Pull bar 5, connecting rod 6；The outer tube 10 is sheathed on outside the connecting rod 6.
Specifically, the lower end of connecting rod 6 is provided with female thread, and the upper end for breaking bar 7 is provided be connected with the connecting rod 6 outer
Screw thread.Likewise, the upper end of connecting rod 6 is provided with external screw thread, the lower end of pull bar 5 is provided with the female thread being connected with connecting rod 6.
As shown in figure 1, the upper end of the piston 2 can be connected with connecting tube 15.The upper end of the central canal 1 can be fixed
Position-limiting tube is connected with, the lower surface of position-limiting tube forms spacing to the piston 2, prevents piston 2 from continuing up.Connecting tube 15 it is upper
End can be used for cross structure part square beyond the Great Wall, such as oil pipe, centralizer etc..
The lower end sealing shroud of connecting tube 15 is located at the upper end of piston 2, and is connected by anti-rotation pin.Wherein, connecting tube 15
High-temperature resistant seal ring can be provided between piston 2.Ball sealer 17 is landed in the upper end of central canal 1, and central canal 1 is sealed, note
The annular space that pressure is entered between connecting tube 15 and position-limiting tube (or central canal 1) when water is suppressed, the bottom surface of the annular space is piston 2
Surface, so as to pressure is acted on piston 2, promotes piston 2 to move down.
In the present embodiment, grappling sealing mechanism can be anchored on sleeve pipe, and which can include anchor mechanism and sealing
Mechanism, anchor mechanism can be anchored on the inwall of sleeve pipe by the impetus of piston 2.Sealing mechanism can when being squeezed
To expand, so as to oil jacket annular space is insulated.
Specifically, the grappling sealing mechanism can be including upper slipses 9 and lower slipses 14, below the upper slipses 9
Upper cone 11, the lower cone 13 above the lower slipses 14；It is provided with resistance between the upper slipses 9 and the lower slipses 14
High temperature packing element 12.Wherein, the upper cone 11 and the lower cone 13 are connected by shear pin 16 with the outer tube 10.
Wherein, lower slipses 14 are sheathed on the top of base 3, the lower surface contact of lower slipses 14 in the upper surface of base 3, from
And 14 position of lower slipses is fixed for base 3.In upper slipses 9, upper slipses 9 are moved down 2 descending contact of piston, and
Upper cone 11 is promoted to move down, simultaneously, upper slipses 9 are strutted by upper cone 11；Compress resistance in 11 folding process of upper cone
High temperature packing element 12, meanwhile, lower pressure is transferred to lower cone 13 by packing element 12, causes lower cone 13 to move down.Lower cone 13 to
Lower slipses 14 are strutted during lower movement.Upper slipses 9 are anchored on the inwall of sleeve pipe after being strutted with lower slipses 14, high-temperature plastic
Oil jacket annular space is insulated after 12 compression-expansions of cylinder.
With continued reference to locking member, the locking member shown in Fig. 1, are provided between the outer tube 10 and the upper cone 11
It is prevented from moving on the upper cone 11.Specifically, the locking member includes the locking that fixation is set in outside the outer tube 10
Pipe, the outer wall of the locking tube are provided with the first helical teeth；The inner surface of the upper cone 11 is provided with is matched somebody with somebody with first helical teeth
The second helical teeth for closing.Wherein, locking tube can be welded or is bolted on the outer tube 10.
Pressure pipe 8 can be arranged with outside the central canal 1.The upper end of upper slipses 9 described in the lower surface contact of the pressure pipe 8
Face；The lower end of the piston 2 is extend in the annular space between the pressure pipe 8 and the central canal 1.As shown in figure 1, the pressure pipe
8 inner surface is provided with step, and piston 2 is moved at step, promotes pressure pipe 8 together to move down.
Break bar 7 to be connected base 3 with central canal 1, specifically, the tail stifled 4 for being blocked in the base 3, can be provided with
(being referred to as plug), the tail stifled 4 are located at the lower section for breaking bar 7.Wherein, breaking bar 7 can be under certain pulling force
Disconnect, so that bridging plug completes to give up.Preferably, it is described to break bar 7 for copper bar (or copper rod).
Herein cited any digital value all include between lower limit to higher limit with the lower value of an incremented and
The all values of upper value, the interval that there are at least two units between any lower value and any much higher value.For example, such as
Fruit elaborates that the value of the quantity or process variable (such as temperature, pressure, time etc.) of a part is from 1 to 90, preferably from 20
To 80, more preferably from 30 to 70, then purpose is to illustrate that such as 15 to 85,22 are also clearly listed in the description arrives
68th, 43 to 51,30 to 32 is equivalent.For the value less than 1, suitably think that a unit is 0.0001,0.001,0.01,0.1.
These are only intended to the example clearly expressed, it is believed that the numerical value enumerated between minimum and peak is possible to
Combination is all expressly set forth in the description in a similar manner.
Unless otherwise stated, all scopes all include all numerals between end points and end points.It is used together with scope
" about " or " approximate " be suitable for two end points of the scope.Thus, " about 20 to 30 " be intended to cover " about 20 to about
30 ", at least including the end points for indicating.
The all articles for disclosing and reference material, including patent application and publication, for various purposes by quoting knot
Together in this.The term " substantially by ... constitute " of description combination should include determined by element, composition, part or step and reality
Other elements, composition, part or step without the basic novel feature for affecting the combination in matter.Using term "comprising" or
" including " is describing the combination of element here, composition, part or step it is also contemplated that basic by these elements, composition, part
Or the embodiment that step is constituted.Here by using term " can with ", it is intended to which illustrate that " can with " include is described any
Attribute is all optional.
Multiple element, composition, part or step can be provided by single integrated component, composition, part or step.Alternative
Ground, single integrated component, composition, part or step can be divided into detached multiple element, composition, part or step.It is used for
The open "a" or "an" of description element, composition, part or step is not said to exclude other elements, composition, part
Or step.
It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouching
State, many embodiments and many applications outside the example for being provided will all be aobvious and easy for a person skilled in the art
See.Therefore, the scope of this teaching should not be determined with reference to foregoing description, but should with reference to claims and this
The four corner of the equivalent possessed by a little claim is determining.For comprehensive purpose, all articles and with reference to including special
The disclosure of profit application and bulletin is all by reference to being incorporated herein.Theme disclosed herein is omitted in aforementioned claim
Any aspect is not intended to abandon the body matter, also should not be considered as inventor the theme is not thought of as it is disclosed
A part for utility model theme.
Claims (11)
1. a kind of fireflood bridging plug, it is characterised in that include：
Central canal；
The piston being sheathed on outside the central canal；The piston can suppress outside well effect lower edge described in central canal move down；
With the central canal lower end by breaking the base that bar is connected；The base is sealed condition；The bar of breaking can be drawn
It is disconnected；
The outer tube being sheathed on outside the central canal；The lower end of the outer tube is fixedly connected with the base；It is arranged outside the outer tube
There is grappling sealing mechanism；The grappling sealing mechanism is located between the piston and the base；When the piston is moved down
Set can the grappling sealing mechanism grappling.
2. bridging plug as claimed in claim 1, it is characterised in that：The grappling sealing mechanism includes upper slipses and lower slipses, position
In the upper cone below the upper slipses, the lower cone above the lower slipses；The upper slipses and the lower slipses it
Between be provided with high temperature resistant packing element.
3. bridging plug as claimed in claim 2, it is characterised in that：The upper cone and the lower cone are with the outer tube by cutting
Cut pin connection.
4. bridging plug as claimed in claim 3, it is characterised in that：Locking member is provided between the outer tube and the upper cone,
The locking member is prevented from moving on the upper cone.
5. bridging plug as claimed in claim 4, it is characterised in that：The locking member includes that fixation is set in outside the outer tube
Locking tube, the outer wall of the locking tube are provided with the first helical teeth；The inner surface of the upper cone is provided with and first helical teeth
The second helical teeth for coordinating.
6. bridging plug as claimed in claim 5, it is characterised in that：Pressure pipe is arranged with outside the central canal；The lower end of the pressure pipe
The upper surface of upper slipses described in the contact of face；The lower end of the piston extend into the annular space between the pressure pipe and the central canal
In.
7. bridging plug as claimed in claim 6, it is characterised in that：Pull bar that the central canal includes from top to bottom being sequentially connected,
Connecting rod；The outer tube sleeve is outside the connecting rod.
8. bridging plug as claimed in claim 1, it is characterised in that：It is described to break bar for copper bar.
9. bridging plug as claimed in claim 1, it is characterised in that：It is provided with the tail for being blocked to block up in the base, the tail is blocked up
It is located at the lower section for breaking bar.
10. bridging plug as claimed in claim 2, it is characterised in that：The high temperature resistant packing element and the upper cone, the lower cone
Between be respectively equipped with spacer ring.
11. bridging plugs as claimed in claim 1, it is characterised in that：The upper end of the piston is connected with connecting tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621022182.3U CN206071531U (en) | 2016-08-31 | 2016-08-31 | Fireflood bridging plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621022182.3U CN206071531U (en) | 2016-08-31 | 2016-08-31 | Fireflood bridging plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206071531U true CN206071531U (en) | 2017-04-05 |
Family
ID=58435602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621022182.3U Active CN206071531U (en) | 2016-08-31 | 2016-08-31 | Fireflood bridging plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206071531U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184647A (en) * | 2018-08-24 | 2019-01-11 | 中国石油天然气股份有限公司 | Layered fireflood ignition gas injection pipe column and layering fireflood method |
| CN114893150A (en) * | 2022-04-29 | 2022-08-12 | 中石化石油工程技术服务有限公司 | Hydraulic setting and cement injecting integrated tool for bridge plug |
-
2016
- 2016-08-31 CN CN201621022182.3U patent/CN206071531U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184647A (en) * | 2018-08-24 | 2019-01-11 | 中国石油天然气股份有限公司 | Layered fireflood ignition gas injection pipe column and layering fireflood method |
| CN114893150A (en) * | 2022-04-29 | 2022-08-12 | 中石化石油工程技术服务有限公司 | Hydraulic setting and cement injecting integrated tool for bridge plug |
| CN114893150B (en) * | 2022-04-29 | 2024-04-09 | 中石化石油工程技术服务有限公司 | Bridge plug hydraulic setting and ash injection integrated tool |
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