CN206737879U - A kind of elastic packing element of intelligence - Google Patents
A kind of elastic packing element of intelligence Download PDFInfo
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- CN206737879U CN206737879U CN201720499586.XU CN201720499586U CN206737879U CN 206737879 U CN206737879 U CN 206737879U CN 201720499586 U CN201720499586 U CN 201720499586U CN 206737879 U CN206737879 U CN 206737879U
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- packing element
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Abstract
A kind of elastic packing element of intelligence, clad including outside, clad is internally provided with intelligent elastic layer, inside intelligent elastic layer separation is supported by main body framework, mixed liquor is coated between main body framework, intelligent elastic layer is independent packing skeleton structure, and its skeleton structure is piled up for hollow small size to be formed, the mixed liquor of nano-porous materials and liquid is coated with hollow small size, main body framework plays the effect of mixed liquor of the supporting and shaping with coating nano-porous materials and liquid：The effect of the mixed liquor of cladding nano-porous materials and liquid refers to the mixed liquor that nano-porous materials and liquid are independently wrapped up in each small size.In the compression packer course of work, packing element can by axial load, then compress packing element realize it is closed have set annular space function, the utility model uses the structure of intelligent elastic layer, can be deformed upon after packing element is pressurized.The utility model has the characteristics of simple in construction, convenient and practical.
Description
Technical field
Packing element technical field is the utility model is related to, more particularly to a kind of elastic packing element of intelligence.
Background technology
Packer refers to for sealing annular space and (or) isolation interval of interest, control injection or extraction fluid, and can bear
The downhole tool of pressure difference.Packer is typically gone into the well using oil pipe (drilling rod) or cable.On scene, often with oil pipe (drilling rod)
The tubing string of well is referred to as packer tubing string or packer system.It is real that the sealing of packer and isolation features rely primarily on potted component
It is existing.At present packer element mainly be packing element, its material is rubber, because packing element is nonlinear elastic material, its
The difference of rubber compounding has considerable influence to material property, and then directly affects the sealing property of packer.In addition,
Packing element bears packing element shoulder during higher pressure difference in hot environment, easily by pressure break, makes packing element seal failure, so as to cause to insulate
Device it is resistance to force down, service life it is short.The HTHP compression type glue barrel used at present, often add at the both ends of packing element becket or
Wire netting protection structure, in the case where pressure difference is not very high, the requirement of packing element is substantially met, but with pressure difference
Further rise, the ability to work of packing element are still undesirable.In order to further improve disadvantages mentioned above, researcher is mostly from packing
The structure of device packing element is improved, and effect is unsatisfactory.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the utility model proposes a kind of elastic packing element of intelligence, the elastic packing element
Can Intelligent adjustment own form, Volume Changes, externally embody the substantially constant of pressure (namely itself stress) so as to realize,
It is convenient and practical with simple in construction, packing element service behaviour is lifted, the characteristics of reducing packing element failure risk.
To reach above-mentioned purpose, the scheme that the utility model uses for：
A kind of elastic packing element of intelligence, includes the clad 1 in outside, and described clad 1 is internally provided with intelligent elastic layer
2, the described inside of intelligent elastic layer 2 is supported separation by main body framework, and mixed liquor 2-2 is coated between main body framework,
Described main body framework is independent packing skeleton structure.
Described intelligent elastic layer 2 is piled up for hollow small size skeleton to be formed.
The described periphery of clad 1 is round and smooth shape.
Described main body framework is small point of hollow cube 2-1A, hollow honeycomb body 2-1B or hollow cylinder 2-1C
Lattice form, and are coupled to each other between small lattice.
Connection is without connecting between described small lattice and small lattice.
The beneficial effects of the utility model：
The utility model packing element shoulder is not in stress concentration phenomenon, and the independent packing skeleton structure of the packing element adds
In the life-span safe to use of packing element, after packing element outer layer wears or fails, internal pressure senses in real time to be changed and makes rapidly adaptive
It should adjust, greatly reduce packing element failure risk.
Brief description of the drawings
Accompanying drawing 1 is the schematic diagram of the utility model structure one.
Accompanying drawing 2 is the schematic diagram of the utility model structure two.
Accompanying drawing 3 is the schematic diagram of the utility model structure three.
Accompanying drawing 4 is the utility model elastomeric material packing element fundamental diagram.
Accompanying drawing 5 is the utility model pressure versus volume change schematic diagram.
Accompanying drawing 6 is mixed liquor 2-2 schematic diagrames.
Embodiment
Structural principle of the present utility model and operation principle are described in further detail below in conjunction with the accompanying drawings.
As shown in Fig. 1 Fig. 2 Fig. 3, a kind of elastic packing element of intelligence, including clad 1 and intelligent elastic layer 2, the clad 1
Using media-resistant high temperature resistant nitrile rubber；The intelligent elastic layer 2 encapsulates the mixed of nano-porous materials and liquid by main body framework
Liquid 2-2 is closed to form.Main body framework is made using TPUE rubber TPU；It is piled up by some hollow small sizes
Form, hollow small size can be cube 2-1A or hollow honeycomb body 2-1B or hollow cylinder 2-1C；Couple between small size
Without connecting：It is an entirety as main body framework that each small size skeleton, which interconnects,；Cladding within each small size is empty
Between independently of each other, to ensure the failure rupture of small size without influenceing other small size functions.In each small size
It is packaged with the mixed liquor 2-2 of nano-porous materials and liquid；The nano-porous materials are hydrophobicity porous material, and it most can hole
Footpath scope control is in 1~2nm；The liquid is water or glycerine；Packaged nano-porous materials and forming predetermined liquids ratio are really
The method of determining is：Effective pore volume of nano-porous materials and the ratio of liquid volume are 1:3~1:Between 5.
Unique pressure versus volume variation characteristic after being combined using nano-porous materials with functional fluid, by rationally designing,
So that the New rubber cylinder has bigger anti-pressure ability, shaft bottom high pressure can be preferably adapted to.
Novel packer rubber material will not fail in shaft bottom because of the high temperature in shaft bottom, have good high temperature resistance
Energy.
As shown in Fig. 4 Fig. 5 Fig. 6：Nano-porous materials and liquid-packing are in a confined space, at the initial stage of pressurization, institute
When application pressure ratio is relatively low, due to the effect of surface tension, liquid cannot be introduced into inside aperture, now the external institute of whole packing element
The pressure volume characteristic of performance is substantially linear, for institute in the mixed liquor of clad, main body framework, nano-porous materials and liquid
The summation of the elastic deformation of the liquid of use.With the increase of pressure applied, liquid can break through the surface in porous material aperture
Tension force effect, enter inside porous material, P-V characteristic now is that curve enters hole plateau in Fig. 5, and this enters
Hole plateau is the first operation interval of intelligent elastic layer, in the section, continues to increase with pressure, liquid can be in a steady stream
Constantly enter in the middle of the duct of porous material, the pressure change externally showed is very small, i.e.,：Entering hole plateau
(the first operation interval of intelligent elastic layer), after annular pressure increase, liquid flows into porous material duct, and packing element is integrally to periphery
Sleeve pipe and inner side tubing pressure remain unchanged.If the ambient pressure applied continues to increase, liquid fill up porous material duct it
Afterwards, the pressure volume characteristic curve that whole packing element externally shows recovers the larger linear growth trend of slope, is clad, main body
The summation of the elastic deformation of liquid employed in the mixed liquor of skeleton, nano-porous materials and liquid, this scope exceeds should
Working range designed by utility model, listed here is sealed for one complete nano-porous materials of statement with mixed liquid
The pressure volume characteristic variations process being pressurized after dress.After reducing ambient pressure arrival certain value, due to the nano-porous materials
For hydrophobic material, liquid can spontaneous outflow porous material duct, be presented as in Fig. 5 pressure versus volume it is characteristic portal it is flat
The platform phase, this is the second operation interval of this kind of New rubber cylinder.As described above, in the section (portalling plateau), with the external world
The reduction of pressure, liquid can spontaneous outflow porous material duct, the pressure change externally showed is also very small, i.e.,：Portalling
Plateau (the second operation interval of intelligent elastic layer), after annular pressure reduces, liquid outflow porous material duct, packing element entirety
Peripheral casing and inner side tubing pressure are remained unchanged.In summary, enter hole plateau and to portal plateau described, i.e., intelligently
In the first operation interval and the second operation interval of elastic layer, when annular pressure changes, what liquid can be spontaneous flows in or out
Porous material duct, and the pressure change externally embodied is very small, packing element is applied to the alternation of peripheral casing and inner side oil pipe
Therefore stress also reduces.Therefore the New rubber cylinder can break through the compressive ultimate of traditional rubber material, have more preferable compressive property.
When annular space temperature changes, the change that material volume expands with heat and contract with cold can be triggered so as to the change of initiation pressure, in institute
State in operation interval, these pressure changes can trigger fluid to flow in or out porous material duct, so as to realize Intelligent adjustment, most
Realize that externally embodiment pressure is constant or change is small eventually.Because the New rubber cylinder intelligence elastic layer has multiple small size encapsulation liquid to consolidate
Mixture forms, and pressure transmission performance is far superior to traditional material packing element, and pressure is uniformly distributed after each position of packing element is pressurized, glue
Stress concentration phenomenon is not present in cylinder shoulder.The independent packing skeleton structure of the New rubber cylinder adds the safe handling longevity of packing element
Life, after the even a certain independent small size abrasion of packing element outer cladding layer or failure, remaining position of intelligent elastic layer can be rapid
Make a response, the liquid in each encapsulation small size senses pressure change, spontaneous to flow in or out porous material duct, intelligence
Elastic layer form adaptive is adjusted, and packing element both sides are automatically adjusted to be close to sleeve pipe and oil pipe, greatly reduces packing element failure
Risk.
Operation principle of the present utility model：
In the compression packer course of work, packing element can be by axial load, and then compression packing element is realized close
Set annular space function is closed, the utility model uses the structure of intelligent elastic layer, can be deformed upon after packing element compression.Clad
It is made using the resistant to elevated temperatures nitrile rubber of media-resistant, plays the primary protective effect to intelligent elastic layer.Intelligent elastic layer
It is made up of two parts：Main body framework and nano-porous materials and the mixed liquor of liquid.Main body framework is by multiple hollow squares
Cellular or cylindric small size is formed, and is coupled to each other between small size without connecting.Main body framework plays supporting and shaping
With cladding nano-porous materials and liquid mixed liquor effect, supporting and shaping effect be ensure packing element by shear when
Wait, because big deformation occurs packing element will not be caused to fail.Coating the effect of the mixed liquor of nano-porous materials and liquid is
Refer to the mixed liquor that nano-porous materials and liquid are independently wrapped up in each small size, do not influenceed after ensureing a small size rupture
Other small size functions.The mixed liquor of the nano-porous materials of encapsulation and liquid is the major function of intelligent elastic layer in small size
Material.After the completion of packer setting, intelligent elastic layer is compressed by axial compressive force, closed to have set annular space.Now, in mixed liquor
Liquid be only partly among the duct of porous material, porous material duct, which is not filled also, (corresponds to Fig. 5
Press force-displacement curve figure in, should on pore pressure force platform area is entered middle part).When annular pressure or temperature change, liquid
Know from experience it is spontaneous flow in or out porous material duct, realize the automatic adjusument to extraneous environmental change, the pressure externally embodied
Power (namely itself stress) change is small.
Claims (5)
1. a kind of elastic packing element of intelligence, include the clad (1) in outside, it is characterised in that set inside described clad (1)
Have an intelligent elastic layer (2), described intelligent elastic layer (2) is internal to be supported separation by main body framework, main body framework it is every
Mixed liquor (2-2) is coated with individual small lattice, described main body framework is independent packing skeleton structure.
2. the elastic packing element of a kind of intelligence according to claim 1, it is characterised in that described intelligent elastic layer (2) is sky
Heart corpusculum skeleton product, which is piled up, to be formed.
3. the elastic packing element of a kind of intelligence according to claim 1, it is characterised in that described clad (1) periphery is circle
Sliding shape.
4. the elastic packing element of a kind of intelligence according to claim 1, it is characterised in that described main body framework is stood for hollow
The small lattice composition of cube (2-1A), hollow honeycomb body (2-1B) or hollow cylinder (2-1C) cylinder, and between small lattice
It is coupled to each other.
5. the elastic packing element of a kind of intelligence according to claim 4, it is characterised in that between described small lattice and small lattice
Connection is without connecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720499586.XU CN206737879U (en) | 2017-05-08 | 2017-05-08 | A kind of elastic packing element of intelligence |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720499586.XU CN206737879U (en) | 2017-05-08 | 2017-05-08 | A kind of elastic packing element of intelligence |
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| CN206737879U true CN206737879U (en) | 2017-12-12 |
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| CN201720499586.XU Active CN206737879U (en) | 2017-05-08 | 2017-05-08 | A kind of elastic packing element of intelligence |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420065A (en) * | 2017-05-08 | 2017-12-01 | 西安石油大学 | A kind of elastic packing element of intelligence and preparation method thereof |
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2017
- 2017-05-08 CN CN201720499586.XU patent/CN206737879U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420065A (en) * | 2017-05-08 | 2017-12-01 | 西安石油大学 | A kind of elastic packing element of intelligence and preparation method thereof |
| CN107420065B (en) * | 2017-05-08 | 2023-08-11 | 西安石油大学 | Intelligent elastic rubber cylinder and preparation method thereof |
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