CN209261526U - Packing element protrusion-dispelling mechanism - Google Patents
Packing element protrusion-dispelling mechanism Download PDFInfo
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- CN209261526U CN209261526U CN201821892224.8U CN201821892224U CN209261526U CN 209261526 U CN209261526 U CN 209261526U CN 201821892224 U CN201821892224 U CN 201821892224U CN 209261526 U CN209261526 U CN 209261526U
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- packing element
- protrusion
- dispelling
- split
- deformation
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Abstract
The utility model discloses a kind of packing element protrusion-dispelling mechanism, including central tube, upper protrusion-dispelling mechanism, packing element group and lower protrusion-dispelling mechanism, upper protrusion-dispelling mechanism, packing element group and lower protrusion-dispelling mechanism are connected in turn from top to bottom in the pipe outer wall of center.It can effectively solve the technological deficiency of " there are still larger gaps after packing element protrusion-dispelling mechanism passively swells and swells " in the presence of the prior art using the utility model, so that the annular space packing pressure for improving the extension hanger with top packer reaches 70MPa.
Description
Technical field
The utility model relates to a kind of packing element protrusion-dispelling mechanisms to belong to petroleum for improving packer packing every pressure difference
The manufacturing technology field of gas industry downhole tool.
Background technique
The tail tube hanging that extension hanger with top packer is mainly used for petroleum gas field is cemented the well, it can be achieved that tail
The high pressure packing of pipe and upper layer casing annulus solves common extension hanger in low pressure leakage, narrow, the spray leakage same layer of pressure window etc.
The problem of horn mouth gas blowby being likely to occur in the " three high " well drilling liner cementing of property.Packer is the tail pipe with top packer
The main component of hanger, packer used at present can only realize that tail pipe and the interannular of upper layer casing permanently insulate pressure-bearing
40MPa is not able to satisfy the requirement of the anti-gas channeling of higher pressure well.To find out its cause, mainly because of the packing element protrusion-dispelling mechanism of packer
There is also following technological deficiencies:
1, existing protrusion-dispelling mechanism is to swell to be affixed on by the anti-promotion after the compressed power of packing element to set annular space outer wall, and there are glue
Cylinder pushes hypodynamic problem.
2, to existing protrusion-dispelling mechanism carry out failure analysis discovery, protrusion-dispelling mechanism and set between annular space outer wall there are still
Gap, packing element can squeeze out under high pressure from the gap, make seal failure.
Summary of the invention
The purpose of the utility model is to overcome the above problems of the existing technology, provide a kind of packing element protrusion-dispelling
Mechanism.Using the utility model can effectively solve in the presence of the prior art " after packing element protrusion-dispelling mechanism passively swells and swells
There are still larger gaps " technological deficiency, thus improve the extension hanger with top packer annular space packing pressure reach
To 70MPa.
To achieve the above object, the technical solution adopted in the utility model is as follows:
A kind of packing element protrusion-dispelling mechanism, it is characterised in that: including central tube, upper protrusion-dispelling mechanism, packing element group and lower anti-
Prominent mechanism, upper protrusion-dispelling mechanism, packing element group and lower protrusion-dispelling mechanism are connected in turn from top to bottom in the pipe outer wall of center.
The center tube outer surface is provided with zigzag structure, and the multiple blind holes of outer surface circumference uniform distribution, packing element group upper end
Expansive force control shear pin, which is opened, by set and packing element on packing element is fixed on center tube outer surface blind hole position.
The upper protrusion-dispelling mechanism includes that packing element deformation stops set, packing element deformation to stop set gap pad and filling plastic circle, glue
Cylinder deformation stops set upper side to be provided with split-type zigzag structure, and lower end is provided with split-type and sets elastic claw, and packing element deformation stops
Set gap pad sets elastic claw with split-type and is fixedly connected, filling plastic snare be located on packing element put on it is coaxial with set inclined-plane on packing element
Cooperation, packing element deformation stop set gap pad to be supported on filling plastic circle.
The packing element deformation stops the split-type zigzag structure of set upper side setting to be equal by cutting along axis from end face
It is divided into several valves, the zigzag structure on inner wall is matched with center tube outer surface zigzag structure.
It is to be cut to be divided into several valves along axis from end face that the split-type, which sets elastic claw, and end face is inwardly provided with down
Angle.
The packing element deformation stops the piece number of set gap pad and packing element deformation that set lower end is stopped to set the number that elastic claw is divided equally
Measure identical, and every centre and packing element deform the gap for stopping set lower end to be divided equally and be aligned, and every is become by welding and packing element
The end face of one point of valve of form drag interstage sleeve connects.
The lower protrusion-dispelling mechanism includes packing element support sleeve, packing element support sleeve vulcanized rubber and packing element support cuff, packing element branch
Support set upper end is provided with inclined-plane split-type elastic claw, vulcanizes rubber by inclined-plane coaxial cooperation, lower end and packing element support sleeve with packing element group
It is connect with packing element support cuff by threaded coaxial after glue combination.
The inclined-plane split-type elastic claw is to be cut to be divided into several valves along axis from end face.
Using utility model has the advantages that
1, the utility model is sequentially connected to central tube using upper protrusion-dispelling mechanism, packing element group and lower protrusion-dispelling mechanism from top to bottom
External structure type is avoided or is reduced, it can be achieved that protrusion-dispelling mechanism and sets between annular space outer wall as zero clearance or minimal clearance
Soft sealing material squeezes out a possibility that making packing element fail from the gap between hardware under high pressure, improves tail pipe
With the sealability between the casing of upper layer.
2, the utility model is provided with packing element and opens expansive force control shear pin, and before shear pin cutting, upper protrusion-dispelling mechanism is in setting force
It deforms under effect, then just cuts shear pin, continue to compress packing element, avoiding problems the axial forces generated with packing element compression to go
The protrusion-dispelling that swells mechanism, and then avoid packing element and squeeze out and fail from gap before protrusion-dispelling mechanism swells.
3, the utility model is provided with zigzag structure, has the function of setting rear retaining.
4, the utility model is cemented the well for the tail tube hanging of petroleum gas field, it can be achieved that tail pipe and upper layer casing annulus
High pressure packing, can effectively solve in the presence of the prior art " packing element protrusion-dispelling mechanism still has after passively swelling and swell
The technological deficiency of larger gap ", so that the annular space packing pressure for improving the extension hanger with top packer reaches 70MPa,
The scope of application is wider.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is protrusion-dispelling mechanism structure schematic diagram on the utility model；
Fig. 3 is protrusion-dispelling mechanism structure schematic diagram under the utility model.
In the figure, it is marked as 1, central tube, 2, upper protrusion-dispelling mechanism, 3, packing element group, 4, lower protrusion-dispelling mechanism, 5, packing element deformation blocking
Set, 6, packing element deformation stop set gap pad, 7, filling plastic circle, 8, packing element open expansive force control shear pin, 9, cover on packing element, 10, glue
Cylinder support sleeve, 11, packing element support sleeve vulcanized rubber, 12, packing element support cuff.
Specific embodiment
Embodiment 1
A kind of packing element protrusion-dispelling mechanism, including central tube 1, upper protrusion-dispelling mechanism 2, packing element group 3 and lower protrusion-dispelling mechanism 4,
Upper protrusion-dispelling mechanism 2, packing element group 3 and lower protrusion-dispelling mechanism 4 are connected in turn from top to bottom on 1 outer wall of central tube.
1 outer surface of central tube is provided with zigzag structure, and the multiple blind holes of outer surface circumference uniform distribution, in packing element group 3
Expansive force control shear pin 8 is opened by set 9 and packing element on packing element and is fixed on 1 outer surface blind hole position of central tube in end.
The upper protrusion-dispelling mechanism 2 includes that packing element deformation stops set 5, packing element deformation to stop set gap pad 6 and filling plastic circle
7, packing element deformation stops 5 upper ends of set to be provided with split-type zigzag structure, and lower end is provided with split-type and sets elastic claw, packing element deformation
Stop set gap pad 6 to set elastic claw with split-type to be fixedly connected, filling plastic circle 7 is set on packing element on set 9 and covers 9 on packing element
Inclined-plane coaxial cooperation, packing element deformation stop set gap pad 6 to be supported on filling plastic circle 7.
The packing element deformation stops the split-type zigzag structure of 5 upper ends of set setting to be equal by cutting along axis from end face
It is divided into several valves, the zigzag structure on inner wall is matched with 1 outer surface zigzag structure of central tube.
It is to be cut to be divided into several valves along axis from end face that the split-type, which sets elastic claw, and end face is inwardly provided with down
Angle.
The packing element deformation stops the piece number of set gap pad 6 and packing element deformation that 5 lower ends of set is stopped to set what elastic claw was divided equally
Quantity is identical, and every centre deforms the gap for stopping 5 lower ends of set to be divided equally with packing element and is aligned, and every passes through welding and packing element
Deformation stops the end face connection of a point of valve of set 5.
The lower protrusion-dispelling mechanism 4 includes that packing element support sleeve 10, packing element support sleeve vulcanized rubber 11 and packing element support cuff 12,
10 upper end of packing element support sleeve is provided with inclined-plane split-type elastic claw, is supported with packing element group 3 by inclined-plane coaxial cooperation, lower end and packing element
Set vulcanized rubber 11 is connect with packing element support cuff 12 by threaded coaxial after combining.
The inclined-plane split-type elastic claw is to be cut to be divided into several valves along axis from end face.
Embodiment 2
As the preferred forms of the utility model, it discloses a kind of packing element protrusion-dispelling mechanisms, mainly by
Central tube 1, upper protrusion-dispelling mechanism 2, packing element group 3 and lower protrusion-dispelling mechanism 4 form.The upper protrusion-dispelling mechanism 2, packing element group 3 and lower protrusion-dispelling
Mechanism 4 is sequentially connected to from top to bottom outside central tube 1.
In the present embodiment, 1 outer surface of central tube is provided with zigzag structure, while several are blind for outer surface circumference uniform distribution
Hole.
In the present embodiment, upper protrusion-dispelling mechanism 2, which is mainly deformed by packing element, stops set 5, packing element deformation to stop set gap pad 6, modeling
Material Raschig ring 7, packing element open 9 composition of set on expansive force control shear pin 8 and packing element.The packing element deformation stops set 5 upper end inner walls setting
There is split-type zigzag structure (cut from end face along axis and be divided into several valves), lower end is provided with split-type and sets elastic claw
(split-type, which sets elastic claw and cut from end face along axis, is divided into several valves, and end face is inwardly provided with big chamfering, inner wall away from
Expand from internal diameter at a certain distance from end face, wall thickness reduction).The packing element deformation stops set 6 the piece number of gap pad and packing element deformation to hinder
5 lower end of interstage sleeve sets that the quantity that elastic claw is divided equally is identical, and the seam that every centre and packing element deformation stop 5 lower ends of set to be divided equally
The end face of gap alignment, an every point of valve for deforming blocking set 5 with packing element by welding links together.The filling plastic circle
7 pass through inclined-plane coaxial cooperation with packing element group 3, and when receiving sets lower pressure, filling plastic circle 7 is deformed with packing element stops set 5 together
The inclined-plane of set 9, which is slided, along packing element sets annular space outer wall until being adjacent to, and is formed together " metal wall ", blocks annular space, " metal wall "
Packing element compression can be prevented to be extruded destruction from annular clearance when swelling.
In the present embodiment, packing element group 3 opens expansive force control shear pin 8 by packing element and is fixed on 1 outer surface blind hole position of central tube,
It is bearing to when centainly setting lower pressure, packing element opens expansive force control shear pin 8 and cuts, and the compression of packing element group 3, which swells, realizes that annular space insulates.
In the present embodiment, lower protrusion-dispelling mechanism 4 is mainly by packing element support sleeve 10, packing element support sleeve vulcanized rubber 11 and packing element branch
Support set hoop 12 forms.It is (equal by cutting along axis from end face that 10 upper end of packing element support sleeve is provided with inclined-plane split-type elastic claw
Be divided into several valves), with packing element group 3 by inclined-plane coaxial cooperation, lower end combined with packing element support sleeve vulcanized rubber 11 after with packing element
Cuff 12 is supported to connect by threaded coaxial, when receiving sets lower pressure, packing element compression pushes the inclined-plane point of packing element support sleeve 10
Flap-type elastic claw is opened up to being affixed on annular space outer wall, and packing element axial direction extrusion failure is prevented.
Claims (8)
1. a kind of packing element protrusion-dispelling mechanism, it is characterised in that: including central tube (1), upper protrusion-dispelling mechanism (2), packing element group (3)
With lower protrusion-dispelling mechanism (4), upper protrusion-dispelling mechanism (2), packing element group (3) and lower protrusion-dispelling mechanism (4) are connected to center in turn from top to bottom
It manages on (1) outer wall.
2. packing element protrusion-dispelling according to claim 1 mechanism, it is characterised in that: central tube (1) outer surface is set
Zigzag structure, and the multiple blind holes of outer surface circumference uniform distribution are equipped with, packing element group (3) upper end is opened by set (9) and packing element on packing element
Central tube (1) outer surface blind hole position is fixed in expansive force control shear pin (8).
3. packing element protrusion-dispelling according to claim 2 mechanism, it is characterised in that: the upper protrusion-dispelling mechanism (2) includes
Packing element deformation stops set (5), packing element deformation to stop set gap pad (6) and filling plastic circle (7), and packing element deformation stops on set (5)
It holds and is provided with split-type zigzag structure, lower end is provided with split-type and sets elastic claw, and packing element deformation stops set gap pad (6) and divides
Flap-type sets elastic claw and is fixedly connected, and filling plastic circle (7), which is set on packing element to cover, coaxially matches on (9) with set (9) inclined-plane on packing element
It closes, packing element deformation stops set gap pad (6) to be supported on filling plastic circle (7).
4. packing element protrusion-dispelling according to claim 3 mechanism, it is characterised in that: the packing element deformation stops set (5)
The split-type zigzag structure of upper end setting is to be cut to be divided into several valves along axis from end face, the zigzag knot on inner wall
Structure is matched with central tube (1) outer surface zigzag structure.
5. packing element protrusion-dispelling according to claim 4 mechanism, it is characterised in that: it is certainly that the split-type, which sets elastic claw,
End face, which rises to be cut along axis, is divided into several valves, and end face is inwardly provided with chamfering.
6. packing element protrusion-dispelling according to claim 5 mechanism, it is characterised in that: the packing element deformation stops set gap
The piece number and the packing element deformation for padding (6) stop to cover (5) lower end and set that the quantity that elastic claw is divided equally is identical, and every centre and packing element
The gap alignment that deformation stops set (5) lower end to be divided equally, every passes through welding and stops a point of valve for covering (5) with packing element deformation
End face connection.
7. packing element protrusion-dispelling according to claim 6 mechanism, it is characterised in that: the lower protrusion-dispelling mechanism (4) includes
Packing element support sleeve (10), packing element support sleeve vulcanized rubber (11) and packing element support cuff (12), packing element support sleeve (10) upper end is set
It is equipped with inclined-plane split-type elastic claw, passes through inclined-plane coaxial cooperation, lower end and packing element support sleeve vulcanized rubber (11) group with packing element group (3)
It is connect with packing element support cuff (12) by threaded coaxial after conjunction.
8. packing element protrusion-dispelling according to claim 7 mechanism, it is characterised in that: the inclined-plane split-type elastic claw is certainly
End face, which rises to be cut along axis, is divided into several valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821892224.8U CN209261526U (en) | 2018-11-16 | 2018-11-16 | Packing element protrusion-dispelling mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821892224.8U CN209261526U (en) | 2018-11-16 | 2018-11-16 | Packing element protrusion-dispelling mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN209261526U true CN209261526U (en) | 2019-08-16 |
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ID=67555202
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821892224.8U Active CN209261526U (en) | 2018-11-16 | 2018-11-16 | Packing element protrusion-dispelling mechanism |
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| CN (1) | CN209261526U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593805A (en) * | 2019-10-21 | 2019-12-20 | 中国石油集团川庆钻探工程有限公司 | Packer sealing device and liner hanger |
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2018
- 2018-11-16 CN CN201821892224.8U patent/CN209261526U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593805A (en) * | 2019-10-21 | 2019-12-20 | 中国石油集团川庆钻探工程有限公司 | Packer sealing device and liner hanger |
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