CN106837234A - A kind of reducing component and reducing water-tight equipment - Google Patents
A kind of reducing component and reducing water-tight equipment Download PDFInfo
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- CN106837234A CN106837234A CN201710140233.5A CN201710140233A CN106837234A CN 106837234 A CN106837234 A CN 106837234A CN 201710140233 A CN201710140233 A CN 201710140233A CN 106837234 A CN106837234 A CN 106837234A
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- sealing
- reducing component
- face
- reducing
- stop collar
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- 238000007789 sealing Methods 0.000 claims abstract description 182
- 230000004323 axial length Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 18
- 230000000694 effects Effects 0.000 description 17
- 239000007788 liquid Substances 0.000 description 17
- 239000012071 phase Substances 0.000 description 12
- 239000007791 liquid phase Substances 0.000 description 9
- 241000521257 Hydrops Species 0.000 description 8
- 206010030113 Oedema Diseases 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 239000004576 sand Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 210000003205 muscle Anatomy 0.000 description 5
- 239000007790 solid phase Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000007792 gaseous phase Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/17—Interconnecting two or more wells by fracturing or otherwise attacking the formation
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sealing Devices (AREA)
Abstract
The present invention provides a kind of reducing component and the reducing water-tight equipment including reducing component.The reducing component of offer includes slip cap, the first stop collar, the second stop collar, sealing shroud and interior fixed cover；First stop collar and the second stop collar are respectively arranged at the two ends of interior fixed cover；Slip cap at least slides branch valves and is combined into by two, slides branch valve two ends and is separately mounted in the first stop collar and the second stop collar, and slides the two ends of branch valve and radially slide cooperation with the first stop collar and the second stop collar respectively；The outer wall of sealing shroud forms sealing and coordinates with the internal face of slip cap, and sealing shroud is at least combined into by two sealing branch valves, and it is corresponding with a sealing branch valve to slide each split gap of branch valve.The reducing component is when reducing component external diameter changes, while ensureing the sealing property of reducing component.
Description
Technical field
Hydrops the present invention relates to oil gas field and coal-bed gas exploitation field discharges technology, more particularly to a kind of reducing component,
The invention further relates to a kind of reducing water-tight equipment with above-mentioned reducing component.
Background technology
In the recovery process of low pressure oil gas field and coal bed gas, pit shaft hydrops is that restriction Oil/gas Well stable yields is main with high yield
One of problem.In order to ensure that oil, gas well are normally produced, it is necessary to which the hydrops in pit shaft is discharged in time.
It is one of conventional fluid-discharge method using reducing water-tight equipment, its operation principle is：Reducing water-tight equipment is in well
Lower setting position, the reducing component of reducing water-tight equipment implements air-liquid isolation.When driving a well, pit shaft itself gas compression deposit energy
Amount or Oil/gas Well energy promote reducing water-tight equipment up, and reducing water-tight equipment top hydrops is discharged into pit shaft；During closing well, reducing
Water-tight equipment moves to underground setting position；Drive a well again, repeat above-mentioned circulation, realize that continuous draining is produced.For this area
For technical staff, it is necessary to solve between reducing component and shaft in wall and reducing component internal excellent sealing, to meet oil
The demand of gas well normal drainage production.
Due to underground working is complicated and shaft in wall have it is certain irregular, therefore, reducing water-tight equipment is in the wellbore
, it is necessary to ensure that it smoothly passes over performance during uplink and downlink.The reducing amplitude of the reducing component of existing reducing water-tight equipment compared with
Poor sealing performance during small and reducing, reduces by performance and sealing property.
Another aspect, is to ensure sealing effectiveness, it is known that sealing means matched somebody with somebody with nonmetallic by nonmetallic or metal
The mode of conjunction ensures sealing, and this mode reduces the service life of reducing component.
Therefore, how to improve the sealing property of reducing component and by performance, discharge opeing effect is improved, as art technology
Personnel's technical barrier urgently to be resolved hurrily.
The content of the invention
First purpose of the invention is to provide a kind of reducing component, and water-tight equipment can be improved using the reducing component
Sealing effectiveness and by performance.
Second object of the present invention is to provide a kind of reducing water-tight equipment including above-mentioned reducing component.
The reducing component that the present invention is provided includes slip cap, the first stop collar, the second stop collar, sealing shroud and interior fixation
Set；First stop collar and the second stop collar are respectively arranged at the two ends of interior fixed cover；
The slip cap at least slides branch valve and is combined into by two, and the slip branch valve two ends are separately mounted to first limit
Slided in position set and the second stop collar, and described at least one the two ends of branch valve respectively with the first stop collar and the second stop collar
Radially slide cooperation；
The outer wall of the sealing shroud is sealed with the internal face of the slip cap and coordinated, and the sealing shroud is at least by two sealings
Branch valve is combined into, and described each split gap for sliding branch valve seals the corresponding sealing of branch valve with one.
Optionally, it is provided with elastic device between the interior fixed cover outer wall and the inwall of the sealing shroud.
Optionally, the slip cap is hardware.
Optionally, the sealing shroud inwall is provided with radially-directed groove；The interior fixed cover outer wall is provided with radially-directed
Projection, the radially-directed is raised to radially slide cooperation with the radially-directed groove；Or；
It is raised that the sealing shroud inwall is provided with radially-directed；The interior fixed cover outer wall is provided with radially-directed groove；Institute
State that radially-directed is raised to radially slide cooperation with the radially-directed groove.
Optionally, at least partly described piece slided between branch valve is close including forming end face slip by lateral extension portions
Joint seal gap.
Optionally, the interior fixed cover outer wall sets outwardly directed outer lug boss；The slip cap inwall is provided with inwardly
The inner convex platform for stretching out；The outer lug boss first end face forms end face seal and coordinates with the first end face of the inner convex platform；
The first end of the sealing shroud is provided with step, the inner cylinder face shape of the external cylindrical surface of the step and the inner convex platform
Sealed into the face of cylinder and coordinated；End face seal is formed between the step bottom face of the step and the second end face of the inner convex platform to match somebody with somebody
Close；The step top end face of the step forms end face seal and coordinates with the first end face of the outer lug boss.
Optionally, the second end end face of the sealing shroud and the first stop collar inner face or the second stop collar inner face
Between have spacing.
A kind of reducing water-tight equipment that the present invention is provided includes connecting rod and reducing component, and reducing component is any of the above-described
Plant reducing component；The interior fixed cover inwall coordinates or is integrated part with the outer wall of the connecting rod.
Another reducing water-tight equipment that the present invention is provided includes connecting rod and reducing component, and reducing component is different from upper
State the reducing component of the reducing component of reducing water-tight equipment, i.e. above-below direction upside-down mounting；The interior fixed cover inwall is arranged on described
On connecting rod, the inner convex platform is located at outer lug boss top.
Optionally, the connecting rod sets upper limit plane and lower limit plane；The interior fixed cover inwall and the connection
The outer wall rotatable engagement of rod member, the reducing component is located between the upper limit plane and lower limit plane.
Optionally, the outer face of first stop collar seals with the lower limit plane and coordinates；The upper limit plane is with
The distance between confined planes are more than the reducing component axial length, the outer wall of the interior fixed cover inwall and the connecting rod
Axial sliding fit；Through-flow groove is provided with the outside wall surface of the connecting rod；The reducing component upper end and the upper limit
With the through-flow gap for connecting the through-flow groove when plane is contradicted.
Optionally, the interior fixation is arranged with the clearance hole of inside and outside communication, and the clearance hole and the through-flow groove phase
Mutually link up.
The reducing component that the present invention is provided includes slip cap, the first stop collar, the second stop collar, sealing shroud and interior fixation
Set；First stop collar and the second stop collar are respectively arranged at the two ends of interior fixed cover；The slip cap is at least by two cunnings
Dynamic branch valve is combined into, and the slip branch valve two ends are separately mounted in first stop collar and the second stop collar, and at least one
The two ends for sliding branch valve radially slide cooperation with the first stop collar and the second stop collar respectively, can relative to interior fixed cover
To move radially；Reducing water-tight equipment is sliding when running into that operating mode is different or pit shaft internal diameter changes during upstream or downstream
Dynamic branch valve is produced and moved radially, i.e. single-lobe or many valves or overall reducing, adapts to the change of pit shaft internal diameter, and then improve reducing component
By performance.The outer wall of the sealing shroud is sealed with the internal face of the slip cap and coordinated, and the sealing shroud is at least close by two
Envelope branch valve is combined into, and described each split gap for sliding branch valve is corresponding with a sealing branch valve；In reducing component external diameter hair
While changing, the inside of reducing component remains sealing.
In further technical scheme, flexible dress is set between the interior fixed cover outer wall and the inwall of the sealing shroud
Put, elastic device makes sealing shroud outer wall and the slip cap inwall keeps laminating, and then ensures the sealing reliability of reducing component.
In further technical scheme, the sealing shroud inwall is provided with radially-directed groove；The interior fixed cover outer wall sets
It is equipped with radially-directed raised, the radially-directed groove radially slides cooperation with the radially-directed projection；Or, the sealing shroud
Inwall is provided with radially-directed projection, and the interior fixed cover outer wall is provided with radially-directed groove, the radially-directed projection and institute
State radially-directed groove and radially slide cooperation.When sealing shroud is moved radially with slip cap, due to slip cap, sealing shroud, interior fixed cover,
Annexation between the first stop collar and the second stop collar is constant, it is ensured that sealing shroud and slip cap branch valve split gap phase
Correspondence sealing, it is ensured that reducing component internal remains sealing during reducing.
In further technical scheme, the slip cap is hardware, improves the anti-wear performance of slip cap, is extended
The service life of reducing component.
In further technical scheme, the slip cap maximum outside diameter is not less than or close to shaft in wall internal diameter, it is ensured that become
The sealing property coordinated between footpath component outer wall and shaft in wall, it is ensured that discharge opeing effect.
In further technical scheme, at least partly described piece slided between branch valve includes being formed by lateral extension portions
End face is slidingly sealed gap.The piece slided under external force between branch valve can change, that is, expand or shrink, the transverse direction
Gap end face accordingly slides to realize the reducing of slip cap, while the lateral clearance keeps sliding the close of the piece between branch valve
Envelope.
In further technical scheme, the interior fixed cover outer wall sets outwardly directed outer lug boss；In the slip cap
Wall is provided with the inner convex platform for inwardly stretching out；End face is formed between the outer lug boss first end face and the first end face of the inner convex platform
Sealing coordinates.Under external force (gas phase, liquid phase, mixed phase or external motivating force) effect, sealing is kept in the axial direction, improve and become
The sealing effectiveness of footpath component.
In further technical scheme, the first end of the sealing shroud is provided with step, and the external cylindrical surface of the step with
The inner cylinder face of the slip cap inner convex platform forms face of cylinder sealing and coordinates.Under the effect of the pressure, the outside cylinder of the step
The inner cylinder face of face and the inner convex platform keeps gluing, sealing, it is to avoid or clearance leakage between slip cap split branch valve is reduced,
Improve the sealing effectiveness of reducing component.
In further technical scheme, the second end face of the step bottom face of the step and the slip cap inner convex platform it
Between formed end face seal coordinate；Formed between the first end face of the step top end face of the step and the interior fixed cover outer lug boss
End face seal coordinates, and improves between sealing shroud and slip cap, the sealing property between sealing shroud and interior fixed cover, it is to avoid or subtract
Lack the pressure loss, improve the sealing effectiveness of reducing component.
In further technical scheme, the second end of the sealing shroud is non-step end, the second end of the sealing shroud with
There is spacing gap between the first stop collar inner face or the second stop collar inner face.Gas phase or liquid phase can be by described
Split gap between spacing gap and slip branch valve enters sealing shroud inner side, acts on sealing shroud inwall, makes sealing shroud outer wall
With slip cap inwall, sealing shroud step top end face and interior fixed cover outer lug boss first end face, slip cap inner convex platform first end face with
Interior fixed cover outer lug boss first end face is brought into close contact, it is ensured that the sealing effectiveness of reducing component.
The reducing water-tight equipment that the present invention is provided includes above-mentioned reducing component and connecting rod, due to above-mentioned reducing group
Part, reducing water-tight equipment also has corresponding technique effect.
In the reducing water-tight equipment that further technical scheme is provided, however not excluded that the interior fixed cover is with the connecting rod
It is connected or integral piece, to adapt to other types hole condition.
In the reducing water-tight equipment that further technical scheme is provided, the connecting rod is hollow, under the connecting rod
End is connected with lower contact, to adapt to other types hole condition.
In the reducing water-tight equipment that optional technical scheme is provided, the interior fixed cover inwall is arranged on the connecting rod
On, the inner convex platform of the slip cap is located at the outer lug boss top of interior fixed cover, i.e., integrally fallen on described reducing component above-below direction
Dress；When reducing water-tight equipment is up under the effect of external force traction drive, the reaction force of reducing water-tight equipment top hydrops is to close
Big envelope applies outwardly radial active force and downward axial force, reducing component is played interior sealing, the effect of external seal,
Ensure under external force traction drive the need for up operating mode discharge opeing.
In the reducing water-tight equipment that further technical scheme is provided, the connecting rod sets upper limit plane and lower limit
Face；The reducing component is located between the upper limit plane and lower limit plane.The interior fixed cover inwall and the connecting rod
Outer wall rotatable engagement, improve the adaptability of reducing water-tight equipment.It is not excluded for, the interior fixed cover inwall and the connecting rod
The outer wall of part is connected or is integrated part, makes the adaptation of reducing water-tight equipment other hole conditions.
In the reducing water-tight equipment that further technical scheme is provided, outer face and the lower limit of first stop collar
Plane sealing coordinates, and the upper limit plane and lower limit crown to back are more than the axial length, the interior fixed cover inwall and institute
State the outer wall axial sliding fit of connecting rod；Through-flow groove is provided with the outside wall surface of the connecting rod；The reducing group
With the through-flow gap for connecting the through-flow groove when part upper end contradicts with the upper limit plane.Reducing water-tight equipment leads in external force
When drawing up under driving effect, the sealing between the outer face of first stop collar and the lower limit plane coordinates, and reduces pressure
Power is lost, and improves discharge opeing efficiency；When reducing water-tight equipment is descending, reducing component is contacted with upper limit plane, gas phase, liquid phase, solid
Phase or mixed phase can reach reducing by through-flow gap between through-flow groove and the reducing component upper end and the upper limit plane
Water-tight equipment top, and then make reducing water-tight equipment smooth descending.
In further optional technical scheme, interior fixation is arranged with the clearance hole of inside and outside communication, and the clearance hole and institute
Through-flow groove is stated to communicate with each other.Descending reducing component is non-tight over-current state, when reducing component is descending, in interior fixed cover
The long-pending sand in outside can by clearance hole, using through-flow groove discharge reducing water-tight equipment outside, and then make reducing water-tight equipment
With certain sediment outflow self-purification function, stuck phenomenon is reduced, improve the reliability of reducing water-tight equipment.It is up in reducing component
When, sealing being formed between reducing component and lower limit plane and is coordinated, clearance hole and through-flow groove keep reducing component without leakage channel
Sealing, and then can realize discharge opeing operate.
Brief description of the drawings
Comprising in the description and accompanying drawing and the specification of the part that constitutes specification shows example of the invention
Property, feature and aspect, and for explaining principle of the invention.
Fig. 1 is a kind of structural representation of reducing water-tight equipment that the embodiment of the present invention one is provided；
Fig. 2 is part A mplifying structure schematic diagram in Fig. 1；
Fig. 3 is a kind of underground fastener structure diagram (part)；
Fig. 4 is reducing water-tight equipment combination principle schematic diagram (part) that Fig. 3 undergrounds fastener is provided with embodiment one；
Fig. 5 is a kind of well head trip rod structure diagram；
Fig. 6 is that well head trip rod shown in Fig. 5 clashes into reducing water-tight equipment unlatching by-pass prot principle schematic.
Fig. 7 is a kind of structural representation of reducing water-tight equipment that the embodiment of the present invention two is provided；
Fig. 8 is the uplink state structural representation of the reducing water-tight equipment that the embodiment of the present invention three is provided；
Fig. 9 is the downstream state structural representation of the reducing water-tight equipment that the embodiment of the present invention three is provided.
Wherein, in figure：
Bypass valve rod 1, locking ball 2, lower contact 3, lower limit cover 4 (the second stop collars), sealing shroud 5, elastic device 6,
Slip cap 7, interior fixed cover 8, upper limit cover 9 (the first stop collars), connecting tube 10, gas-liquid import 11, fixed screw 12, spring
13rd, connecting rod 14, plug lower contact 15, retainer ring 16, attaching nut 17, connecting screw rod 18, upper limit plane S1, lower limit plane
S2, through-flow groove 91, lower slipses 20, packing element 21, upper slipses 22, fastener main body 23, fastener impact head 24, well head trip rod
25th, well head trip rod main body 26, step 51, clearance hole 81, sealing coordinates M1, end face seal to coordinate M2, face of cylinder sealing to coordinate
M3, end face seal coordinate M4, end face seal to coordinate M5, be slidingly sealed gap M6.
Specific embodiment
Various exemplary embodiments of the invention, feature and aspect are described in detail below with reference to accompanying drawing.It is identical in accompanying drawing
Reference represent the same or similar element of function.Although the various aspects of embodiment are shown in the drawings,
Unless otherwise indicated, it is not necessary to accompanying drawing drawn to scale.Herein special word " exemplary " mean " be used as example, embodiment or
Person is illustrative ".Any embodiment here as illustrated by " exemplary " should not necessarily be construed as being better than or being better than other embodiment.
In addition, in order to better illustrate the present invention, numerous details are given in specific embodiment below.
It will be appreciated by those skilled in the art that without some details, the present invention can equally be implemented.In some instances, for
Method well known to those skilled in the art, means, element are not described in detail, in order to highlight purport of the invention.
In presents, except non-binding context has other to represent or has special instruction, " interior ", " outward ", " end ", " horizontal stroke
To ", " longitudinal direction ", " on ", the noun of locality such as D score, be to be determined based on exemplary reducing component central axis.In addition, herein
Sealing described in part coordinates, and is not to represent therebetween in the absence of gap, according to actual needs, can make between mating surface
Keep predetermined gap, with keeping corresponding sealing simultaneously, to slide, assembling or other be actually needed provides convenient.
In this part, in order to save space, also for be easy to it will be appreciated by those skilled in the art that to the present invention provide change
While footpath water-tight equipment embodiment is described, because the description of reducing water-tight equipment embodiment includes implementing reducing component
The description of example, so no longer individually being described to the reducing Assemblies Example that the present invention is provided.
Fig. 1 is refer to, Fig. 1 is a kind of structural representation of reducing water-tight equipment that the embodiment of the present invention one is provided.The reality
The reducing water-tight equipment for applying example offer includes connecting rod and the reducing component on connecting rod.In the present embodiment, even
Extension bar part is connecting tube 10 and lower contact 3；The outer diameter cylindrical surface cover of connecting tube 10 is equipped with reducing component.
The lower end of connecting tube 10 is provided with lower contact 3, and by-passing valve is provided between connecting tube 10 and lower contact 3.The present embodiment
In, by screwed connection between connecting tube 10 and lower contact 3, and the two holding is fixedly connected by fixed screw 12；Certainly,
Can also remain connected to connect by existing other modes between connecting tube 10 and lower contact 3.
In the present embodiment, reducing component includes that slip cap 7, upper limit covers 9 (the first stop collars), (the second limit of lower limit set 4
Position set), interior fixed cover 8, sealing shroud 5 and elastic device 6.Upper limit set 9 and lower limit set 4 are separately mounted to interior fixed cover 8
Two ends；Interior fixed cover 8 is rotationally set on the oval cylinder of small external diameter of connecting tube 10, therefore, reducing component can be relative to
Connecting tube 10 is rotated, to improve reducing component applicability.It is appreciated that interior fixed cover 8 can keep fixing with connecting tube 10；
In the case of the two keeps fixed, it is also possible to the two is set into integral piece, to adapt to other hole conditions.
In the present embodiment, there is radial direction teeth groove the inner side of upper limit set 9, lower limit set 4；The upper and lower side of interior fixed cover 8 has grafting tooth
Muscle.The radial direction teeth groove of grafting tooth muscle grafting upper limit set 9, the lower limit set 4 of the upper and lower ends of interior fixed cover 8, and then keep relative
It is fixed.
In the present embodiment, slip cap 7 is to slide the set shape structure that branch valve is combined into by multiple, and each slides branch valve upper and lower two
Hold to have and move radially pin；Radially inside teeth groove inserts and keeps radially moving with upper limit set 9, lower limit set 4 to move radially pin
Dynamic connection.Each slides branch valve and independently can be moved radially relative to upper limit set 9, lower limit set 4 and interior fixed cover 8；So,
Reducing water-tight equipment during upstream or downstream, due to hole condition is different or pit shaft internal diameter changes when, sliding branch valve can
To move radially, adapt to the change of pit shaft internal diameter, it is ensured that reducing component and reducing water-tight equipment by adaptability.
In the present embodiment, slip cap 7 is to slide branch valve by many valve T-shaped to be combined into, and it is T-shaped that each slides branch valve, and multiple T-shaped are slided
Dynamic branch valve is mutually buckle-shaped into slip cap 7.There is longitudinal reducing gap between adjacent T-shaped slip branch valve and slide laterally gap, and laterally
Glade plane space forms end face and is slidingly sealed gap M6；The need for can so ensureing that monolithic or multi-disc slide branch valve reducing；Adjacent T
End face is slidingly sealed gap M6 while ensureing sealing between shape slides branch valve.The end face for extending laterally is slidingly sealed gap M6 can be with
Piece between branch valve is slided keeps gap sealing in above-below direction, it is to avoid or reduce because the pressure that piece is caused is damaged
Lose；Ensure the sealing effectiveness of reducing component.It is appreciated that slip cap 7 can also be combined into by the slip branch valve of other shapes, extremely
When the piece that small part is slided between branch valve includes that forming end face by lateral extension portions is slidingly sealed gap M6, it is also possible to reach
Similar effect.
It is appreciated that slip cap 7 can at least 4 slide branch valves and be combined into, slide branch valve two ends and be separately mounted to first
In the stop collar 4 of stop collar 9 and second, single independent slip branch valve two ends respectively with the first stop collar 9 and the second stop collar 4
Move radially cooperation.Certainly, when slip cap 7 is other concrete structures, slide branch valve and be not limited to 4.
Fig. 2 is refer to, sealing shroud 5 is located between slip cap 7 and interior fixed cover 8, outer wall and the slip cap 7 of sealing shroud 5
Internal face forms sealing and coordinates M1.In the present embodiment, sealing shroud 5 is combined into by multiple sealing branch valve, and each sealing branch valve and cunning
The split gap of dynamic branch valve is corresponding.Ensure sealing property of the reducing component when external diameter changes.It is appreciated that sealing branch
The quantity of valve can be corresponding with the quantity for sliding branch valve, and each sealing branch valve is corresponding with the split gap for sliding branch valve.I.e.：
Sealing shroud 5 at least can be combined into by two sealing branch valves, and each split gap of the formation of slip branch valve and a sealing branch
Valve is corresponding.
In the present embodiment one, elastic device 6 is provided between sealing shroud 5 and interior fixed cover 8, elastic device 6 can be by multiple
Cylindrical spring formation, or the elastic component of other shapes.Elastic device 6 supports sealing shroud 5, makes the outer wall of sealing shroud 5 and cunning
7 inwalls of dynamic set keep laminating, and then ensure the sealing reliability of reducing component.It is appreciated that under specific operation, it is also possible to profit
The outer wall of sealing shroud 5 and the inwall of slip cap 7 is set to keep laminating with gas/liquid phase pressure or other modes or effect.
As shown in figure 1, in the present embodiment, there is long lumbar hole on the circumference of the upper end of connecting tube 10, there is male thread lower end, and centre has
There is sealing chamfering through hole, lower surface inner side；The lower end of connecting tube 10 has screw thread to be connected with the upper end of lower contact 3, it is possible to understand that：Also may be used
To connect by other means.There is importing angle the lower end of lower contact 3, cylindrical to have liquid bath and liquid pass hole.
By-passing valve is installed between connecting tube 10 and lower contact 3.By-passing valve includes bypass valve rod 1, bypasses the upper end of valve rod 1
It is sealing surface, lower end is guiding cone, and the guiding cone is through in the through hole of the axial direction of lower contact 3, bypasses the external cylindrical surface of valve rod 1
Ball locating slot and positive stop lug boss are provided with, the relevant position of lower contact 3 is provided with mounting hole, ball 2 and bullet are provided with mounting hole
Property resetting means, elasticity reset device can be spring 13；Ball 2 is against on spring 13；The side of lower contact 3 is provided with bypass
Hole.
As shown in figure 1, the sealing surface of bypass valve rod 1 upper end can be ball sealer face, plane or the conical surface；The sealing surface can be with
Sealing is cooperatively formed with the lower surface of connecting tube 10 to coordinate.
Refer to Fig. 3 and Fig. 4, Fig. 3 is a kind of underground fastener structure diagram (part)；Fig. 4 be Fig. 3 undergrounds fastener with
Reducing water-tight equipment combination principle schematic diagram (part) that embodiment one is provided.Underground fastener include lower slipses 20, packing element 21,
Upper slipses 22, fastener main body 23 and fastener impact head 24.
Refer to Fig. 5 and Fig. 6, Fig. 5 simultaneously is a kind of well head trip rod structure diagram；Fig. 6 is that well head shown in Fig. 5 clashes into
Bar clashes into reducing water-tight equipment opens by-pass prot principle schematic.Well head trip rod includes well head trip rod 25 and well head trip rod
Main body 26.
Combined with underground fastener and well head trip rod, using embodiment one provide the reducing water-tight equipment it is worked
Journey is as follows：
Wellhead shut-in, reducing water-tight equipment falls, and the middle through hole of connecting tube 10 and by-pass prot are opened, under gas-liquid can pass through
The side of joint 3 is provided with by-pass prot, the through hole of connecting tube and long lumbar hole and is flowed upward from reducing component lower section, and then reduces
Reducing water-tight equipment resistance, reducing water-tight equipment downstream rate is very fast, and the closed-in time is reduced to a certain extent.Set in reducing sealing
After fastener impact head 24 is clashed into standby whereabouts, shifting on valve rod 1, the sealing surface of bypass valve rod 1 upper end and the lower end of connecting tube 10 are bypassed
Face coordinates, and bypasses bore closure.When ground well head drives a well, in the presence of stratum and other energy, gas-liquid by reducing component lower section,
I.e. slip cap 7 covers 4 or the split gap 11 of slip cap 7 with lower limit, into reducing component inner chamber, makes the outer wall of sealing shroud 5 and slides
Cover 7 inwalls to keep sealing, it is common that the outer shifting of slip cap 7 coordinates holding sealing and end face to be slidingly sealed gap M6 with oil pipe or inner-walls of duct
With the inner sealing for realizing reducing component and outside sealing.The reducing component of reducing water-tight equipment be close to duct wall sealing oil pipe or
Pipeline, stratum energy or preserves energy and promotes the hydrops of reducing water-tight equipment and its upper end up, implements discharge opeing.
Reducing water-tight equipment reaches well head, is contacted with well head trip rod 25, and well head trip rod 25 promotes bypass valve rod 1 relative
Moved down in reducing water-tight equipment, and then open by-passing valve, the locking bypass valve rod 1 of steel ball 2, by-pass prot is opened, wellhead shut-in, reducing
Water-tight equipment is descending.Through the above way, reducing water-tight equipment back and forth moves up and down and realizes continuous draining.
It is appreciated that in the reducing water-tight equipment of present invention offer, the quantity for being provided with reducing component is not limited to 1,
The quantity of 2 or multiple reducing components can be set.
In the present embodiment, in order to improve reducing assembly life-span, it is ensured that reducing assembly reliability, slip cap 7 is by metal material
It is made, forms hardware.
In order to ensure reducing component sealing property, the embodiment of the present invention includes multi-sealing structure.Incorporated by reference to Fig. 1 and refer to
Fig. 2, Fig. 2 are part A enlarged drawing in Fig. 1.
In the embodiment of the present invention one, the inwardly inner convex platform that stretches out is provided with the interior circular groove of slip cap 7, inner convex platform is by interior circular groove
It is divided into circular groove and short interior circular groove in long；The outer wall of interior fixed cover 8 sets outwardly directed outer lug boss.Short interior circular groove is installed on interior fixation
In the outer lug boss of set 8.End face is formed between inner convex platform first end face (upper surface) and the first end face (lower surface) of outer lug boss close
Envelope coordinates M2.During reducing water-tight equipment is up, under gas-liquid pressure effect, slip cap 7 has while being moved outwards
Upper shifting trend is moved or had on axial direction, and then makes inner convex platform first end face keep fitting with the first end face of outer lug boss, it is ensured that sealing
Coordinate the sealing effectiveness of M2, it is to avoid or the pressure loss between reduction slip cap 7 and the mating surface of interior fixed cover 8, improve reducing group
The sealing effectiveness of part.
Fig. 1 is refer to again and refers to Fig. 2.In the embodiment of the present invention one, sealing shroud 5 is assemblied in circular groove in the length of slip cap 7
It is interior.The first end (being upper end in Fig. 1) of sealing shroud 5 is provided with step 51, the external cylindrical surface of step 51 and the inner cylinder face of inner convex platform
Form face of cylinder sealing and coordinate M3；Between the step bottom face of step 51 and the second end face (lower surface of inner convex platform) of inner convex platform
Form end face seal and coordinate M4；End face seal is formed between the step top end face and the first end face of outer lug boss of step 51 to coordinate
M5.The outer wall of above-mentioned sealing cooperation and sealing shroud 5 and the internal face sealing of slip cap 7 coordinate M1 and the outer lug boss of interior fixed cover 8 the
End face coordinates M2 to realize the inner sealing of reducing component jointly with the first end face sealing of the inner convex platform of slip cap 7, and reduction passes through
The pressure loss in mutual gap between slip cap 7, sealing shroud 5, the three of interior fixed cover 8.It will be understood by those skilled in the art that according to
Being actually needed can also select one or more of which to seal the sealing for coordinating and realizing reducing component.
It is to be understood that sealing shroud 5 can be sub-assembly, sealing shroud body can be hard material, sealing shroud outer surface, platform
The sealing positions such as rank bottom face, step top end face, step circles cylinder can be attached with soft material, and such as nonmetallic or other combinations are close
Seal structure form.
As shown in figure 1, the inwall of sealing shroud 5 is provided with radially-directed groove；It is convex that the outer wall of interior fixed cover 8 is provided with radially-directed
Rise, the radially-directed groove radially slides cooperation with radially-directed projection.When sealing shroud 5, slip cap 7 move radially reducing, by
It is relative in the radial position annexation of interior fixed cover 8, upper limit set 9, lower limit set 4,5 valves of sealing shroud, 7 valves of slip cap
It is fixed, i.e.,：Interior fixed cover 8 is connected with the radial direction teeth groove tooth muscle of upper limit set 9, lower limit set 4, is relatively fixed；The cunning of slip cap 7
Dynamic branch valve upper and lower ends move radially pin and upper limit set 9, lower limit set 4, and radially inside teeth groove is moved radially to insert and is connected, phase
To fixation；The radially-directed groove of the sealing shroud 5 radially slides cooperation, the sealing of sealing shroud 5 with the radially-directed projection of interior fixed cover 8
Branch valve split gap corresponding with slip cap 7 is corresponding all the time and keeps sealing relationship to be relatively fixed.This makes it possible to ensure to become
The sealing property of footpath component internal, good inner sealing performance guarantee reducing component outer wall is fitted shaft in wall all the time, is protected
Sealing effectiveness inside and out reducing component is demonstrate,proved.In the present embodiment one, it is provided with radially in the radially-directed of interior fixed cover 8 projection
Counterbore groove, the spring of elastic device 6 is arranged in radial direction counterbore groove.
It will be understood by those skilled in the art that the inwall of sealing shroud 5 is provided with, radially-directed is raised, and the outer wall of interior fixed cover 8 sets
Radially-directed groove is equipped with, and raised the formation and radially-directed groove between of radially-directed is radially slided cooperation, can equally realized
Move radially and circumferentially positioned function.
Fig. 1 is refer to, is had between the second end end face (lower end) and the inner face of the second stop collar 4 of sealing shroud 5 corresponding
Spacing；So, outside the end of sealing shroud 5 second, the not covered part in split gap between slip branch valve just forms air-liquid and enters
Mouth 11.During reducing water-tight equipment is up, air-liquid body just can be by between the unsheltered slip branch valve of sealing shroud 5
Split gap (gas-liquid import 11) enters the inner side of sealing shroud 5, acts on the inwall of sealing shroud 5, makes the outer wall of sealing shroud 5 and slip cap 7
Inwall, the step top end face of sealing shroud 5 are closely pasted with the outer lug boss of interior fixed cover 8, the inner convex platform of slip cap 7 and the outer lug boss of interior fixed cover 8
Close, it is ensured that the sealing effectiveness of reducing component.
Fig. 7 is refer to, Fig. 7 is a kind of structural representation of reducing water-tight equipment that the embodiment of the present invention two is provided.With reality
The reducing water-tight equipment for applying the offer of example one is compared, and in the reducing water-tight equipment that embodiment two is provided, reducing component is arranged on connection
On bar 14, and the interior fixed cover 8 of reducing component is installed in rotation in connecting rod 14；It is appreciated that interior fixed cover 8 can be with
Connecting rod 14 keeps fixing；In the case of the two holding is fixed, it is also possible to the two is set into integral piece, to adapt to other wells
Condition.The lower end of connecting rod 14 connects plug lower contact 15.It should be noted that：Due to plug lower contact 15 in the reducing water-tight equipment
There is no by-passing valve, in the course of the work, be a difference in that no by-pass prot opens and closes phenomenon.
When the reducing water-tight equipment is up, in the presence of energy reserve or stratum energy, gas-liquid is entered by inlet 11
Enter reducing component internal, realize sealing between reducing water-tight equipment and tubing wall, the sealing of reducing water-tight equipment internal mechanism, implement
Discharge opeing；When descending, when downstream rate is slower, liquid phase actuating pressure is smaller, between the gap for clashing into formation and itself
Gap, is not enough to form sealing, in gas-liquid, voluntarily falls under self gravitation effect,.Because plug lower contact 15 is not bypassed
Hole, the reducing water-tight equipment simple structure, and hidden danger point is reduced in the process of running, improve reliability.
Refer to Fig. 8 and Fig. 9, Fig. 8 are that the uplink state structure of the reducing water-tight equipment that the embodiment of the present invention three is provided is shown
It is intended to；Fig. 9 is the downstream state structural representation of the reducing water-tight equipment that the embodiment of the present invention three is provided.
The reducing water-tight equipment that the embodiment of the present invention three is provided includes connecting rod and reducing component.Connecting rod includes connecting
Connected nut 17 and connecting screw rod 18.Attaching nut 17 is fixedly connected with the threaded upper ends of connecting screw rod 18, or other are fixed
Type of attachment；The upper limit plane S1 that the lower surface of attaching nut 17 is formed；The screw head upper surface of the bottom of connecting screw rod 18 is formed
The lower limit plane S2 of ring-type；Reducing component is arranged between upper limit plane S1 and lower limit plane S2.In the present embodiment three, the first limit
Sealing is formed between the outer face of position 9 (upper limit sets) of set and lower limit plane S2 to coordinate.
In the present embodiment three, reducing modular construction can be substantially similar to reducing modular construction in embodiment one, and installs
Mode is overturned with reducing component above-below direction in embodiment one, i.e. upside-down mounting reducing component；And then it is located at the inner convex platform of slip cap 7
The outer lug boss top of interior fixed cover 8.The outer wall axial sliding fit of the inwall of interior fixed cover 8 and the connecting screw rod 18.The reducing
When water-tight equipment is up under the effect of external force traction drive, reducing component lower end contradicts lower limit plane S2, on reducing water-tight equipment
The reaction force of portion's hydrops, the active force of downwardly and outwardly radial direction is applied to sealing shroud 5, reducing component is played interior sealing, outer
Sealing and the effect of lower limit plane S2 end part seals.So, the reducing component implements up discharge opeing under external force traction.The implementation
In example, gas phase, liquid phase or solid phase from gas-liquid mouthfuls 11 into the inner chamber of reducing component or when having the trend into reducing component inner chamber,
Reducing component is sealing state；It is non-tight over-current state when the reducing component is descending.
Reducing water-tight equipment is up when carrying out discharge opeing operation under external force draw, the outer face of the first stop collar 9 with
Sealing between lower limit plane S2 coordinates, i.e., sealing is formed between reducing component and lower limit plane S2 and is coordinated, it is ensured that reducing is sealed
Equipment sealing property, improves discharge opeing efficiency.
In the present embodiment three, upper limit plane S1 and lower limit plane S2 distances are more than reducing component axial length；It is solid in suit
Surely the outside wall surface of connecting screw rod 18 of set 8 is provided with through-flow groove 91；Have when reducing component upper end contradicts with upper limit plane S1 and connect
The passage gaps of groove 91 are flowed all.Such purpose is：When the reducing water-tight equipment is descending, reducing component and upper limit
After face S1 contacts, air-liquid can be reached by passage gaps between through-flow groove 91 and reducing component upper end and upper limit plane S1
Reducing water-tight equipment top, reducing water-tight equipment is descending smooth.
In the present embodiment three, the circulation groove 91 of connecting screw rod 18 is multi-head spiral groove；It is appreciated that, however not excluded that other shapes
The circulation groove of formula.Interior fixed cover 8 is provided with the clearance hole 81 of inside and outside communication, and clearance hole 81 and the mutual ditch of the through-flow groove 91
It is logical.Due to behavior non-tight over-current state under reducing component, the long-pending sand outside interior fixed cover 8 can be utilized by clearance hole 81
Outside the discharge reducing water-tight equipment of through-flow groove 91, and then make reducing water-tight equipment that there is certain sediment outflow self-purification function, reduce
Stuck phenomenon, improves the reliability of reducing water-tight equipment.When reducing component is up, lower surface and the lower limit plane of reducing component
Sealing is formed between S2 to coordinate, the leakage channel of clearance hole and through-flow groove 91 is closed, and keeps the sealing of reducing component, and then
Can realize that discharge opeing is operated.
It is appreciated that interior fixed cover 8 can set multiple clearance holes 81, to ensure sand discharge function, self-cleaning properties is improved.Root
According to being actually needed, clearance hole 81 can be set at the position of easy product sand, such as clearance hole 81 can be arranged on the top of outer lug boss
With the correspondence position of sealing branch valve, long-pending sand is substantially reduced to sealing and the adverse effect run.
The upper end grafting tooth muscle of interior fixed cover 8 upside is equipped with retainer ring 16, and the lower end grafting tooth muscle of interior fixed cover 8 downside is equipped with solid
Determine ring 16, there is radial direction teeth groove upper limit set 9 and the inner side of lower limit set 4, and are provided with interior step, are installed and assembling to facilitate.
Refer to Fig. 8 and Fig. 9, the sealing secondary combination of the lower limit plane S2 of the bottom of connecting screw rod 18 can for plane, sphere,
The conical surface or other combination sealing end faces, all should be within the scope of the present invention.
The course of work of reducing water-tight equipment that the embodiment three is provided is：
The attaching nut 17 of the reducing water-tight equipment moves up under the effect of upward external force, and reducing component is displaced downwardly to company
Meet the lower limit plane S2 of screw rod 18.In the presence of air pressure or head of liquid, gas phase, liquid phase or solid phase enter change from gas-liquid mouthful 11
Footpath component inner chamber, promotes sealing shroud 5 to be moved outwards or have outer shifting trend, the sealing slip cap 7 of sealing shroud 5；The outside cylinder of step 51
Face forms face of cylinder sealing and coordinates M3 with the inner cylinder face of inner convex platform；Sealing shroud 5 is moved down or moved down while radial outward movement
Trend, forms end face seal and coordinates M4 between step bottom face and the second end face of inner convex platform；The step top end face of step 51 with
End face seal is formed between the first end face of the outer lug boss of interior fixed cover 8 and coordinates M5, the inner convex platform first end face of slip cap 7 and interior fixation
Cover 8 outer lug boss first end faces and form end face seal cooperation M2, above-mentioned sealing coordinates the common inner sealing for completing reducing component；It is interior
Portion seals the active force to be formed, and makes to be moved outside slip cap 7 or has outer shifting trend to coordinate with oil pipe or inner-walls of duct, seals oil pipe or pipe
Road inwall；The transverse slot for mutually detaining T-shaped slip branch valve of slip cap 7 forms gap sealing M6, common to complete the outer of reducing component
Portion seals；Now, the lower surface of reducing component forms end face seal with the lower limit plane S2 of the bottom of connecting screw rod 18.Reducing is sealed
Equipment is close to duct wall sealing oil pipe or pipeline, under the effect of upward external force, reducing water-tight equipment and its upper gaseous phase, liquid phase or
Moved in solid phase, discharge pit shaft hydrops, complete discharge opeing process.
When external force is downward, reducing water-tight equipment is moved down, and is moved on reducing component, and gas phase, liquid phase or solid phase are by connecting spiral shell
The helicla flute of bar 18, the clearance hole 81 of the inwall of interior fixed cover 8 and reducing component non-tight state and the gap that produces enters reducing
The top of water-tight equipment, reducing water-tight equipment moves down drag reduction, saves power consumption.By the reciprocal size for changing active force
And direction, the reducing water-tight equipment realizes the purpose of continuous draining.It is smaller in no or gas phase amount using the reducing water-tight equipment
In the case of, solve the problems, such as low and stuck because of product sand in oil gas field or other pipeline discharge opeing efficiency.
According to foregoing description, it will be understood by those skilled in the art that interior fixed cover 8 is not limited to (be connected spiral shell with connecting rod
Bar 18) form rotation or/and be slidably matched, interior fixed cover 8 can also be fixedly linked with connecting rod or be integrated part；In reducing
When component is up, in the presence of air pressure or head of liquid, reducing sealing ensure that sealing, realize discharge opeing；In reducing sealing
When equipment is descending, reducing component is in non-tight state, and reducing water-tight equipment is smoothly descending.
It is appreciated that the reducing water-tight equipment that the present invention is provided, quantity in use is not limited to 1, can set 2
The quantity of individual or multiple reducing water-tight equipments.
Based on foregoing description, it will be understood by those skilled in the art that above-mentioned reducing component can be combined with miscellaneous part,
Corresponding reducing water-tight equipment is formed, to realize corresponding purpose.
The above is only the preferred embodiment of the present invention, it is noted that come for those skilled in the art
Say, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (12)
1. a kind of reducing component, it is characterised in that including slip cap, the first stop collar, the second stop collar, sealing shroud and interior fixation
Set；First stop collar and the second stop collar are respectively arranged at the two ends of interior fixed cover；
The slip cap at least slides branch valve and is combined into by two, and the slip branch valve two ends are separately mounted to first stop collar
In the second stop collar, and described at least one slide branch valve two ends respectively with the first stop collar and the radial direction of the second stop collar
It is slidably matched；
The outer wall of the sealing shroud is sealed with the internal face of the slip cap and coordinated, and the sealing shroud is at least by two sealing branch valves
It is combined into, and described each split gap for sliding branch valve seals the corresponding sealing of branch valve with one.
2. reducing component according to claim 1, it is characterised in that the interior fixed cover outer wall and the sealing shroud it is interior
Elastic device is provided between wall.
3. reducing component according to claim 1, it is characterised in that the slip cap is hardware.
4. reducing component according to claim 1, it is characterised in that the sealing shroud inwall is provided with radially-directed groove；
The interior fixed cover outer wall is provided with radially-directed projection, and raised being radially slided with the radially-directed groove of the radially-directed is matched somebody with somebody
Close；Or；
It is raised that the sealing shroud inwall is provided with radially-directed；The interior fixed cover outer wall is provided with radially-directed groove；The footpath
To guide protrusions cooperation is radially slided with the radially-directed groove.
5. reducing component according to claim 1, it is characterised in that at least partly described piece bag slided between branch valve
Include and form end face by lateral extension portions and be slidingly sealed gap.
6. the reducing component according to claim any one of 1-5, it is characterised in that the interior fixed cover outer wall sets outside
The outer lug boss stretched out；The slip cap inwall is provided with the inner convex platform for inwardly stretching out；The outer lug boss first end face is interior with described
The first end face of boss forms end face seal and coordinates；
The first end of the sealing shroud is provided with step, and the external cylindrical surface of the step forms circle with the inner cylinder face of the inner convex platform
Cylinder sealing coordinates；End face seal is formed between the step bottom face of the step and the second end face of the inner convex platform to coordinate；
The step top end face of the step forms end face seal and coordinates with the first end face of the outer lug boss.
7. reducing component according to claim 6, it is characterised in that the second end end face and described first of the sealing shroud
There is spacing between stop collar inner face or the second stop collar inner face.
8. a kind of reducing water-tight equipment, including connecting rod and reducing component, it is characterised in that reducing component is claim 1
Reducing component described in 7 any one；The interior fixed cover inwall coordinates or is integrated part with the outer wall of the connecting rod.
9. a kind of reducing water-tight equipment, including connecting rod and reducing component, it is characterised in that reducing component is claim 6
Or the reducing component described in 7；The interior fixed cover inwall is arranged on the connecting rod, and the inner convex platform is located at the evagination
Platform top.
10. reducing water-tight equipment according to claim 9, it is characterised in that the connecting rod set upper limit plane and
Lower limit plane；The outer wall rotatable engagement of the interior fixed cover inwall and the connecting rod, the reducing component is located on described
Between confined planes and lower limit plane.
11. reducing water-tight equipments according to claim 10, it is characterised in that the outer face of first stop collar and institute
The sealing of lower limit plane is stated to coordinate；The distance between the upper limit plane and lower limit plane are more than the reducing component axial length,
The outer wall axial sliding fit of the interior fixed cover inwall and the connecting rod；It is provided with the outside wall surface of the connecting rod
Through-flow groove；With the through-flow gap for connecting the through-flow groove when reducing component upper end contradicts with the upper limit plane.
12. reducing water-tight equipments according to claim 11, it is characterised in that the interior fixation is arranged with inside and outside communication
Clearance hole, and the clearance hole communicates with each other with the through-flow groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710140233.5A CN106837234A (en) | 2017-03-10 | 2017-03-10 | A kind of reducing component and reducing water-tight equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710140233.5A CN106837234A (en) | 2017-03-10 | 2017-03-10 | A kind of reducing component and reducing water-tight equipment |
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| CN106837234A true CN106837234A (en) | 2017-06-13 |
Family
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|---|---|---|---|
| CN201710140233.5A Pending CN106837234A (en) | 2017-03-10 | 2017-03-10 | A kind of reducing component and reducing water-tight equipment |
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| CN107313738A (en) * | 2017-09-06 | 2017-11-03 | 刘书豪 | The production method of fluid separation apparatus, hoistway structure and oil or natural gas |
| CN107339080A (en) * | 2017-09-06 | 2017-11-10 | 刘书豪 | The production method of fluid separation apparatus, hoistway structure and oil or natural gas |
| CN107503712A (en) * | 2017-09-06 | 2017-12-22 | 刘书豪 | The production method of fluid separation apparatus, hoistway structure and oil or natural gas |
| WO2019047870A1 (en) * | 2017-09-06 | 2019-03-14 | 刘书豪 | Fluid separation device, well structure and method for producing petroleum or natural gas |
| WO2019047867A1 (en) * | 2017-09-06 | 2019-03-14 | 刘书豪 | Fluid separating device and wellbore structure |
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