CN206987754U - Concentric tube double-jet aeration negative pressure sand pumping device - Google Patents
Concentric tube double-jet aeration negative pressure sand pumping device Download PDFInfo
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- CN206987754U CN206987754U CN201720634215.8U CN201720634215U CN206987754U CN 206987754 U CN206987754 U CN 206987754U CN 201720634215 U CN201720634215 U CN 201720634215U CN 206987754 U CN206987754 U CN 206987754U
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Abstract
It the utility model is related to a kind of concentric tube double-jet aeration negative pressure sand pumping device.The upper end of outer oil pipe and inner oil tube is connected with the lower end of concentric double tube；The annular space that power fluid is entered between concentric double tube by ground installation, and the double-jet aeration sand flushing device entered along the annular space between outer oil pipe, inner oil tube in well, sprayed under a part of power fluid, sand in pit shaft is rushed into pine, sprayed on another part power fluid, by the sand in pit shaft by negative pressure intaking pump for pipe in-core, and the setting pot that mixed liquor goes upward to ground by inner oil tube and concentric double tube is formed after being mixed with another part power fluid.Beneficial effect is：The sand of underground thoroughly can be evacuated to ground；The pump barrel sectional area of external flow channel improves 2 times or more than 2 times, reduces the up resistance of down-hole liquid containing sand；Inner oil tube area from bottom to top is identical, and sand is up under same speed in the mixed liquor of flowing, and will not form sand bridge present in prior art can not work.
Description
Technical field
A kind of petroleum industry underground sand pumping device is the utility model is related to, more particularly to a kind of concentric tube double-jet aeration negative pressure
Sand pumping device.
Background technology
During oil extraction, because most of oil reservoir easily shakes out, if horizontal well（Or absorption well）In shake out, it is raw
Produce a period of time after, there is sand and bury pay interval, influence normally to produce, have impact on production capacity effective performance and follow-up it is suitable
Profit is carried out, it is necessary to sand-flushing operation be carried out in time, to ensure the unimpeded of pit shaft.
Currently available technology is：First, the sand washing process of conventional nib oil filling pipe, the technique is not suitable for horizontal well or straight
Serious well is missed in well.Second, being directed to problem above, some conventional nib wells have been attempted both at home and abroad and have carried out improving new rush
Sand instrument, if China Patent No. is CN200920278218.8, patent name is《Bidirectional nozzle hydraulic injecting pump》, by spreading
Pipe, trunnion, formation fluid entrance, driving nozzle, power fluid runner, outer working tube, immersible pump, sand flushing nozzle composition, this practicality are new
Type is due to using Bidirectional nozzle, sand flushing nozzle and driving nozzle, and power fluid is by after under two-tube annular space input well, passing through power liquid stream
Road enters Pump Suction Nozzle, and a part sprays through sand flushing nozzle so that more than 100m/s flow velocity is positive, and jet is in pit shaft in sector
Diffusion, makes horizontal segment sand setting fully be suspended in sand cleaning fluid；Another part is through driving nozzle driving Downhole jetting pump work, with drive
Discharged after the power fluid mixing that dynamic nozzle sprays through trunnion to anemostat, form negative pressure in shaft bottom, realize horizontal well negative pressure sand washing,
Solve the problems, such as horizontal well High angle well section and net horizontal section sand washing.The problem of it is present be：Do not mention and how to realize behaviour
Make concentric double pipe sand-flushing pipe column, how to carry out constructing operation, be not described in and illustrate.
China Patent No. is CN201510237509.2, and patent name is《A kind of horizontal well negative pressure takes out sand device》, including it is outer
Cylinder, trunnion, central tube, nozzle, connector and baffle plate head, connector top are inserted in outer barrel and are threadedly coupled with it, connector
Lower end surface is connected with baffle plate head, and connector front end outer wall is connected with central tube lower end, connector front end endoporus and trunnion lower end
Connection, trunnion pass through central tube upper surface inside central tube, and nozzle is placed in the endoporus of trunnion bottom, and nozzle lower surface is against company
In joint front end on hole end surface, annular space is formed between outer tube inner wall and central tube and connector front end outer wall.The practicality is new
Type realizes that continuous negative pressure takes out sand in horizontal segment pit shaft, while has snaking in sleeve pipe, the function of broken cement, solves horizontal
Discontinuous during well sand washing, the problem of leakage is serious.But its problem of existing, is：First, its double tube used is in well
Below lower certain depth, and be provided with sealing cup, top uses instrument oil pipe, it is such the drawbacks of when being that sand cleaning fluid enters stratum,
Entered by the outer tube of double tube in injector, the sand-laden fluid of return enters the instrument being relatively large in diameter by the inner tube of double tube
Oil pipe, the two diameter difference is larger, and sand speed when up is different in the mixed liquor of flowing, sand setting, and then shape easily occurs
Device is caused not work on into sand bridge；Second, high voltage power liquid enters ground by the annular space between sleeve pipe and instrument oil pipe
Under, so, sleeve pipe needs to bear high pressure, and this does not allow for sleeve pipe pressure-bearing more than 12 MPas in oil recovery standard, and sand washing is dynamic
Power liquid needs to be far longer than this pressure, so, is easy for causing oil well to scrap even great production accident.Third, with lower nozzle
Structure a problem occurs, lower injection flow rate is difficult to control, it may appear that two kinds of situations, when A is that lower injection flow rate is more than aspiration,
Pressure in well increases, because provided with sealing cup, interior well is sealing system, and whole system is in the state that builds the pressure, made in well
Liquid and sand press-in stratum, the purpose of sand washing is not reached；When B is that lower injection flow rate is less than aspiration, liquid and sand in stratum
Son is largely drawn into ground, is easily caused stratum and is largely shaked out, occurs rushing unnet phenomenon, and the power fluid on ground increases,
It is the problem of also causing well site to pollute if having substantial oil in the liquid extracted out.
The content of the invention
The purpose of this utility model is aiming at drawbacks described above existing for prior art, there is provided a kind of concentric tube double-jet aeration
Negative pressure sand pumping device, convenient construction operation, and concentric double tube is connected between ground installation and two oil pipes of underground, lead to
Connection or dismounting that double-tube tap operates concentric double tube one piece one are crossed, the problem of it also avoid sleeve pipe pressure-bearing.
A kind of concentric tube double-jet aeration negative pressure sand pumping device that the utility model is mentioned, including ground installation, the two-tube fire hose
Head（1）, multiple concentric double tubes（2）, outer oil pipe（3）, inner oil tube（4）, double-jet aeration sand flushing device（5）With the concentric box cupling of bridge-type
（6）, multiple concentric double tubes（2）Between pass through the concentric box cupling of bridge-type（6）Connect, the concentric double tube on ground（2）With it is two-tube
Tap（1）Connection, double-jet aeration sand flushing device（5）Including pump barrel and pump core, outer oil pipe（3）Lower end connection double-jet aeration punching
Sand device（5）Pump barrel and be delivered to the sand face in shaft bottom, inner oil tube（4）Lower end connection double-jet aeration sand flushing device（5）Pump
Core is delivered to the double-jet aeration sand flushing device in well（5）Pump barrel in, the outer oil pipe（3）And inner oil tube（4）Upper end with it is same
Heart double tube（2）Lower end connection；Power fluid（D）Concentric double tube is entered by ground installation（2）Between annular space, and along
Outer oil pipe（3）, inner oil tube（4）Between annular space enter well in double-jet aeration sand flushing device（5）, a part of power fluid（D1）Under
Spray, the sand in pit shaft is rushed into pine, another part power fluid（D2）Upper spray, the sand in pit shaft is passed through into negative pressure intaking pump for pipe core
It is interior, and with another part power fluid（D2）Mixed liquor is formed after mixing（E1）Pass through inner oil tube（4）And concentric double tube（2）It is up
To the setting pot on ground.
Above-mentioned concentric double tube（2）By outer tube（2.1）And inner tube（2.2）Composition, and inner tube（2.2）Lower end be provided with interior oil
Pipe plug（2.2.1）, pass through inner oil tube plug（2.2.1）With inner oil tube（4）The box grafting of upper end；The outer tube（2.1）'s
Lower end is provided with external screw thread, passes through rotation and outer oil pipe（3）Upper end box connection.
The above-mentioned concentric box cupling of bridge-type（6）Both ends be respectively equipped with large diameter box（6.1）, centre is provided with small internal diameter box
（6.2）, pass through large diameter box（6.1）With outer tube（2.1）Connection, passes through small internal diameter box（6.2）Connect inner tube（2.2）,
Described large diameter box（6.1）Between box cupling body be provided with insertion intercommunicating pore（6.3）, by upper and lower two large diameter boxes
（6.1）Connection, make two outer tubes up and down（2.1）Pass through intercommunicating pore（6.3）Connection.
Above-mentioned small internal diameter box（6.2）Inwall be inner oil tube spigot seal chamber, can be with a upper concentric double tube
（2）Inner tube（2.2）Connection；Large diameter box（6.1）With concentric double tube（2）Outer tube（2.1）Connection.
Above-mentioned double-tube tap（1）Including rotating main body（1.3）, closure（1.1）And seal（1.2）, inner chamber is set
There is seal（1.2）With concentric double tube（2）Outer tube（2.1）It is tightly connected, closure（1.1）With the upper oil pipe of ground installation
（8）It is fastenedly connected, upper oil pipe（8）With the concentric double tube of downside（2）It is flexibly connected.
Above-mentioned double-jet aeration sand flushing device（5）Including pump barrel and pump core, pass through sealing surface between pump barrel and pump core（5.4）
Connection, wherein pump barrel uses the pump barrel with external flow channel（5.3）, pump core includes top nozzle（5.1）, trunnion（5.2）, lower nozzle
（5.5）, top nozzle（5.1）Top be provided with trunnion（5.2）, lower nozzle（5.5）Injection power fluid downwards, by the sand in pit shaft
Punching pine, passes through pump barrel external flow channel（F1）Suction pump in-core.
Above-mentioned sealing surface（5.4）Including A2 sealing surfaces, B2 sealing surfaces and C2 sealing surfaces, A2 sealing surfaces are by inner oil tube（4）
With double-jet aeration sand flushing device（5）Pump barrel sealing, B2 sealing surfaces and C2 sealing surfaces are by top nozzle（5.1）With double-jet aeration sand washing
Device（5）Pump barrel sealing.
Above-mentioned top nozzle（5.1）Inner chamber be provided with cushion chamber, the upper flow passage of cushion chamber is another part power fluid
（D2）Runner, the lower flow passage of cushion chamber is a part of power fluid（D1）Lower jet flow road；The side of cushion chamber is connected to double
Injection stream sand flushing device（5）External flow channel, be power fluid entrance.
The beneficial effects of the utility model are：The high voltage power liquid of lower nozzle of the present utility model send the sand punching in well
Agitation is got up, and is being extracted into ground by jet pump huge discharge, is being extracted mixed liquor out in setting pot, unnecessary liquid, by not doing
The casing annulus of Seal treatment is recycled into well, and the hydrodynamic face in well is substantially motionless, and missing the sand in serious well can also have
Effect is extracted into ground；Can be thoroughly by horizontal well using the present apparatus（Or leakage is serious）The sand of underground is evacuated to ground, is follow-up
Production provides sound assurance；
In addition, the present invention has further the advantage that：The external flow channel design of pump barrel can make the sectional area of excessively stream improve 2 times
Or more than 2 times, reduce the up resistance of down-hole liquid containing sand；Further, inner oil tube from bottom to top and the inner tube of concentric double tube
Internal diameter is identical, and the sand in the mixed liquor of flowing is up under same speed, will not be formed sand bridge present in prior art without
Method works；Furthermore constructing operation is carried out using double-tube tap and concentric double tube on the ground, convenient construction, can be met
Production requirement, the tripping in distance of concentric double tube are exactly the length of underground sand-wash, are easy to calculation on Construction；Finally, the present invention passes through
The outer oil pipe and inner oil tube of concentric double tube and underground are attached, and make a small amount of concentric double tube, you can realize that sand washing operates,
Reduce construction cost, improve the benefit of operation.
Brief description of the drawings
Accompanying drawing 1 is structural representation of the present utility model；
Accompanying drawing 2 is the structural representation of double-tube tap；
Accompanying drawing 3 is concentric double pipe rod structure schematic diagram；
Accompanying drawing 4 is the structural representation of double-jet aeration sand flushing device；
In upper figure：Double-tube tap 1, concentric double tube 2, outer oil pipe 3, inner oil tube 4, double-jet aeration sand flushing device 5, bridge-type
Concentric box cupling 6, casing annulus 7, upper oil pipe 8, outer tube 2.1, inner tube 2.2, inner oil tube plug 2.2.1, top nozzle 5.1, trunnion
5.2nd, the pump barrel 5.3 with external flow channel, sealing surface 5.4, lower nozzle 5.5, large diameter box 6.1, small internal diameter box 6.2, connection
Hole 6.3；A2 sealing surfaces, B2 sealing surfaces, C2 sealing surfaces, power fluid D, a part of power fluid D1, another part power fluid D2, mixing
Liquid E1, pump barrel external flow channel F1.
Embodiment
Preferred embodiment of the present utility model is illustrated below in conjunction with accompanying drawing, it will be appreciated that described herein excellent
Select embodiment to be merely to illustrate and explain the utility model, be not used to limit the utility model.
A kind of concentric tube double-jet aeration negative pressure sand pumping device that the utility model that the utility model is mentioned is mentioned, including ground
Face equipment, double-tube tap 1, multiple double tube 2, outer oil pipe 3, inner oil tube 4, double-jet aeration sand flushing device 5 and bridge-types with one heart are same
Heart box cupling 6, multiple to be connected with one heart by the concentric box cupling 6 of bridge-type between double tubes 2, the concentric double tube 2 on ground and two-tube water
Tap 1 connects, and double-jet aeration sand flushing device 5 includes pump barrel and pump core, the lower end connection double-jet aeration sand flushing device 5 of outer oil pipe 3
Pump barrel and be delivered to the sand face in shaft bottom, the pump core of the lower end of inner oil tube 4 connection double-jet aeration sand flushing device 5 is delivered in well
In the pump barrel of double-jet aeration sand flushing device 5, the upper end of the outer oil pipe 3 and inner oil tube 4 is connected with the lower end of concentric double tube 2；
The annular space that power fluid D is entered between concentric double tube 2 by ground installation, and along the annular space between outer oil pipe 3, inner oil tube 4
Into the double-jet aeration sand flushing device 5 in well, sprayed under a part of power fluid D1, the sand in pit shaft is rushed into pine, another part moves
Spray, formed by the sand in pit shaft by negative pressure intaking pump for pipe in-core, and after being mixed with another part power fluid D2 mixed on power liquid D2
Close the setting pot that liquid E1 goes upward to ground by inner oil tube 4 and concentric double tube 2.
Wherein, concentric double tube 2 is made up of outer tube 2.1 and inner tube 2.2, and the lower end of inner tube 2.2 is provided with inner oil tube plug
2.2.1, the box grafting of inner oil tube plug 2.2.1 and the upper end of inner oil tube 4 is passed through；The lower end of the outer tube 2.1 is provided with external screw thread,
It is connected by rotating with the box of the upper end of outer oil pipe 3.
Referring to the drawings 3, the both ends of the concentric box cupling 6 of bridge-type are respectively equipped with large diameter box 6.1, and centre is provided with small internal diameter box
6.2, it is connected by large diameter box 6.1 with outer tube 2.1, inner tube 2.2 is connected by small internal diameter box 6.2, in described imperial palace
Box cupling body between footpath box 6.1 is provided with the intercommunicating pore 6.3 of insertion, and upper and lower two large diameter boxes 6.1 are connected, and makes up and down
Two outer tubes 2.1 are connected by intercommunicating pore 6.3.
The inwall of above-mentioned small internal diameter box 6.2 is inner oil tube spigot seal chamber, can be with upper one concentric double tube 2
Inner tube 2.2 connects；Large diameter box 6.1 is connected with the outer tube 2.1 of concentric double tube 2.
Referring to the drawings 2, double-tube tap 1 includes rotating main body 1.3, closure 1.1 and seal 1.2, rotates main body 1.3
Inner chamber be provided with the outer tube 2.1 of seal 1.2 and concentric double tube 2 and be tightly connected, the upper oil pipe of closure 1.1 and ground installation
8 are fastenedly connected, and upper oil pipe 8 is flexibly connected with the concentric double tube 2 of downside, and so in rotation process, upper oil pipe 8 is kept not
Turn, only drive the concentric rotation of double tube 2 to be installed or removed.
Referring to the drawings 4, double-jet aeration sand flushing device 5 includes pump barrel and pump core, passes through sealing surface 5.4 between pump barrel and pump core
Connection, wherein pump barrel use the pump barrel 5.3 with external flow channel, and pump core includes top nozzle 5.1, trunnion 5.2, lower nozzle 5.5, upper spray
The top of mouth 5.1 is provided with trunnion 5.2, and lower nozzle 5.5 sprays downwards power fluid, by pit shaft sand rush pine, by pump barrel outside
Put runner F1 suction pump in-cores.
Wherein, sealing surface 5.4 includes A2 sealing surfaces, B2 sealing surfaces and C2 sealing surfaces, and A2 sealing surfaces spray inner oil tube 4 with double
The pump barrel sealing of jet flow sand washing device 5, B2 sealing surfaces and C2 sealing surfaces are by top nozzle 5.1 and the pump of double-jet aeration sand flushing device 5
Cylinder sealing.
In addition, the inner chamber of top nozzle 5.1 is provided with cushion chamber, the upper flow passage of cushion chamber is another part power fluid D2 stream
Road, the lower flow passage of cushion chamber are a part of power fluid D1 lower jet flow road；The side of cushion chamber is connected to double-jet aeration sand washing
The external flow channel of device 5, it is power fluid entrance.
A kind of application method for concentric tube double-jet aeration negative pressure sand pumping device that the utility model is mentioned, including following step
Suddenly：
When the first, installing, the pump barrel that the lower end of outer oil pipe 3 is connected to double-jet aeration sand flushing device 5 is continuously transferred to sleeve pipe
The sand face in shaft bottom, the pump core of the lower end connection double-jet aeration sand flushing device 5 of inner oil tube 4 are continuously transferred in insertion pump barrel；Inner oil tube 4
Upper end be connected with the inner tube of concentric double tube 2, the upper end of outer oil pipe 3 is connected with the outer tube of concentric double tube 2；Concentric double tube
2 operate rotation by double-tube tap 1 realizes installation and dismounting, and is provided with setting pot in ground well site, and casing annulus 7 is not done
Encapsulation process；
When the 2nd, working, power fluid D enters the outer tube 2.1 and inner tube of concentric double tube 2 by the inlet above well head
Annular space between 2.2, and the annular space by the concentric box cupling 6 of bridge-type into another concentric double tube of underground, then pass through outer oil
Annular space between pipe 3 and inner oil tube 4, into the double-jet aeration sand flushing device 5 of underground, sprayed under a part of power fluid D1, by pit shaft
Sand punching pine, another part power fluid D2 by it is upper spray by the sand suction pump in-core in pit shaft, and with another part power
Mixed liquor E1, which is formed, after liquid D2 mixing goes upward to ground；
3rd, due to being installed on setting pot in the ground installation of well head, the mixed liquor of extraction is placed in setting pot, unnecessary
Liquid can be recycled into well by casing annulus 7, so as to ensure that the hydrodynamic face in well is substantially motionless, missed in serious well
Sand also can effectively be extracted into ground.
Upper oil pipe 8 realizes Fast Installation and dismounting with concentric double tube 2 by double-tube tap 1.
It should be noted that：During sand washing, double-jet aeration sand flushing device 5 moves to shaft bottom always in the sand face of wellbore bottom
Dynamic, at this time, the concentric double tube 2 of ground well head needs the connection tripping in the operation next one of double-tube tap 1
In well, therefore, the movable length of concentric double tube 2 i.e. the length of sand washing, therefore, the outer oil of concentric double tube 2 and underground
Pipe 3 and inner oil tube 4 coordinate the function that double tube can be achieved, and avoid all high being fabricated to using what concentric double tube 2 was brought
This, reduces input.
It is described above, only it is part preferred embodiment of the present utility model, any those skilled in the art
Equivalent technical scheme can be changed or be revised as using the technical scheme of above-mentioned elaboration.Therefore, it is new according to this practicality
Any simple modification or substitute equivalents that the technical scheme of type is carried out, belong to the scope of the requires of the utility model protection to the greatest extent.
Claims (8)
1. a kind of concentric tube double-jet aeration negative pressure sand pumping device, including ground installation, it is characterized in that：Also include double-tube tap
（1）, multiple concentric double tubes（2）, outer oil pipe（3）, inner oil tube（4）, double-jet aeration sand flushing device（5）With the concentric box cupling of bridge-type
（6）, multiple concentric double tubes（2）Between pass through the concentric box cupling of bridge-type（6）Connect, the concentric double tube on ground（2）With it is two-tube
Tap（1）Connection, double-jet aeration sand flushing device（5）Including pump barrel and pump core, outer oil pipe（3）Lower end connection double-jet aeration punching
Sand device（5）Pump barrel and be delivered to the sand face in shaft bottom, inner oil tube（4）Lower end connection double-jet aeration sand flushing device（5）Pump
Core is delivered to double-jet aeration sand flushing device（5）Pump barrel in, the outer oil pipe（3）And inner oil tube（4）Upper end and concentric double oil
Pipe（2）Lower end connection；Power fluid（D）Concentric double tube is entered by ground installation（2）Between annular space, and along outer oil pipe
（3）, inner oil tube（4）Between annular space enter well in double-jet aeration sand flushing device（5）, a part of power fluid（D1）Lower spray, will
Sand punching pine in pit shaft, another part power fluid（D2）Upper spray, by the sand in pit shaft by negative pressure intaking pump for pipe in-core, and with
Another part power fluid（D2）Mixed liquor is formed after mixing（E1）Pass through inner oil tube（4）And concentric double tube（2）Go upward to ground
Setting pot.
2. concentric tube double-jet aeration negative pressure sand pumping device according to claim 1, it is characterized in that：The concentric double tube
（2）By outer tube（2.1）And inner tube（2.2）Composition, and inner tube（2.2）Lower end be provided with inner oil tube plug（2.2.1）, pass through interior oil
Pipe plug（2.2.1）With inner oil tube（4）The box grafting of upper end；The outer tube（2.1）Lower end be provided with external screw thread, pass through rotation
With outer oil pipe（3）Upper end box connection.
3. concentric tube double-jet aeration negative pressure sand pumping device according to claim 2, it is characterized in that：The concentric box cupling of bridge-type
（6）Both ends be respectively equipped with large diameter box（6.1）, centre is provided with small internal diameter box（6.2）, pass through large diameter box（6.1）
With outer tube（2.1）Connection, passes through small internal diameter box（6.2）Connect inner tube（2.2）, in described large diameter box（6.1）Between
Box cupling body be provided with insertion intercommunicating pore（6.3）, by upper and lower two large diameter boxes（6.1）Connection, make two outer tubes up and down
（2.1）Pass through intercommunicating pore（6.3）Connection.
4. concentric tube double-jet aeration negative pressure sand pumping device according to claim 3, it is characterized in that：Described small internal diameter box
（6.2）Inwall be inner oil tube spigot seal chamber, can be with a upper concentric double tube（2）Inner tube（2.2）Connection；Large diameter
Box（6.1）With concentric double tube（2）Outer tube（2.1）Connection.
5. concentric tube double-jet aeration negative pressure sand pumping device according to claim 1, it is characterized in that：Described double-tube tap
（1）Including rotating main body（1.3）, closure（1.1）And seal（1.2）, inner chamber is provided with seal（1.2）With concentric double tube
（2）Outer tube（2.1）It is tightly connected, closure（1.1）With the upper oil pipe of ground installation（8）It is fastenedly connected, upper oil pipe（8）With under
The concentric double tube of side（2）It is flexibly connected.
6. concentric tube double-jet aeration negative pressure sand pumping device according to claim 1, it is characterized in that：Described double-jet aeration punching
Sand device（5）Including pump barrel and pump core, pass through sealing surface between pump barrel and pump core（5.4）Connection, wherein pump barrel are used with external
The pump barrel of runner（5.3）, pump core includes top nozzle（5.1）, trunnion（5.2）, lower nozzle（5.5）, top nozzle（5.1）Top set
There is trunnion（5.2）, lower nozzle（5.5）Injection power fluid downwards, the sand in pit shaft is rushed into pine, passes through pump barrel external flow channel（F1）
Suction pump in-core.
7. concentric tube double-jet aeration negative pressure sand pumping device according to claim 6, it is characterized in that：Described sealing surface
（5.4）Including A2 sealing surfaces, B2 sealing surfaces and C2 sealing surfaces, A2 sealing surfaces are by inner oil tube（4）With double-jet aeration sand flushing device（5）
Pump barrel sealing, B2 sealing surfaces and C2 sealing surfaces are by top nozzle（5.1）With double-jet aeration sand flushing device（5）Pump barrel sealing.
8. concentric tube double-jet aeration negative pressure sand pumping device according to claim 6, it is characterized in that：Described top nozzle
（5.1）Inner chamber be provided with cushion chamber, the upper flow passage of cushion chamber is another part power fluid（D2）Runner, the bottom of cushion chamber
Runner is a part of power fluid（D1）Lower jet flow road；The side of cushion chamber is connected to double-jet aeration sand flushing device（5）It is external
Runner, it is power fluid entrance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720634215.8U CN206987754U (en) | 2017-06-02 | 2017-06-02 | Concentric tube double-jet aeration negative pressure sand pumping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720634215.8U CN206987754U (en) | 2017-06-02 | 2017-06-02 | Concentric tube double-jet aeration negative pressure sand pumping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206987754U true CN206987754U (en) | 2018-02-09 |
Family
ID=61390588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720634215.8U Expired - Fee Related CN206987754U (en) | 2017-06-02 | 2017-06-02 | Concentric tube double-jet aeration negative pressure sand pumping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206987754U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106988693A (en) * | 2017-06-02 | 2017-07-28 | 韩克楚 | Concentric tube double-jet aeration negative pressure sand pumping device and method |
| CN111287679A (en) * | 2020-04-08 | 2020-06-16 | 罗林峰 | Underground sand removing equipment for coal bed gas exploitation |
-
2017
- 2017-06-02 CN CN201720634215.8U patent/CN206987754U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106988693A (en) * | 2017-06-02 | 2017-07-28 | 韩克楚 | Concentric tube double-jet aeration negative pressure sand pumping device and method |
| CN111287679A (en) * | 2020-04-08 | 2020-06-16 | 罗林峰 | Underground sand removing equipment for coal bed gas exploitation |
| CN111287679B (en) * | 2020-04-08 | 2022-08-30 | 明达海洋工程有限公司 | Underground sand removing equipment for coal bed gas exploitation |
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Granted publication date: 20180209 Termination date: 20180602 |