CN208106394U - A kind of underground throttle device with second throttle function - Google Patents
A kind of underground throttle device with second throttle function Download PDFInfo
- Publication number
- CN208106394U CN208106394U CN201820569795.1U CN201820569795U CN208106394U CN 208106394 U CN208106394 U CN 208106394U CN 201820569795 U CN201820569795 U CN 201820569795U CN 208106394 U CN208106394 U CN 208106394U
- Authority
- CN
- China
- Prior art keywords
- main body
- sealing
- throttle
- pin
- body tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a kind of underground throttle devices with second throttle function, belong to petroleum, natural gas extraction drilling tool technical field.The underground throttle device is made of top connection, lower contact, central tube, slips, slips cone, second throttle gas nozzle, primary throttling gas nozzle and cartridge：Second throttle gas nozzle threaded upper ends are connected with main body tube；Upper main body tube upper end is equipped with top connection by center pipe screw thread；Second throttle gas nozzle lower end is threaded with connector sleeve by air nozzle connector；Connector sleeve lower thread connects the gas nozzle that once throttles；Primary throttling gas nozzle lower end is connected with lower main body tube by connecting Internal Pipe Thread；The lower thread of lower main body tube is connected with lower contact.The underground throttle device, structure is simple, easy to use, solve the problems, such as that existing flow controller has can only single throttling and orifice size it is unadjustable, meet the needs that people use.
Description
Technical field
The utility model relates to a kind of underground throttle devices with second throttle function, belong to natural gas extraction drilling tool skill
Art field.
Background technique
In natural gas extraction field, the especially recovery process of the high temperature and pressure natural gas well, people are often used flow controller
To natural gas carry out decrease temperature and pressure, and then enable gas well it is effectively stable produce.Existing underground throttle device is due to knot
The limitation of structure reason has the problem of can only carrying out single throttling；In process of production in order to meet production needs, often need
Multiple underground throttle devices are used in series, have the high problem of use cost；Furthermore the orifice size of existing flow controller is not
It is adjustable, in order to make gas well achieve the purpose that maximum gas production, need often carry out salvaging replacement different model to flow controller,
So that its orifice size matches with gas well well pressure, and then there is the problem of complicated for operation and high production cost.It is therefore desirable to
A kind of flow controller is researched and developed, to solve the problem above that existing underground throttle device has.
Summary of the invention
The purpose of this utility model is that：It provides that a kind of structure is simple, easy to use, has to solve existing flow controller
Can only single throttling and the unadjustable problem of orifice size the underground throttle device with second throttle function.
The technical solution of the utility model is：
A kind of underground throttle device with second throttle function, it is bored by top connection, lower contact, central tube, slips, slips
Body, second throttle gas nozzle, primary throttling gas nozzle and cartridge are constituted, it is characterised in that：Second throttle gas nozzle threaded upper ends connect
It is connected to main body tube；Upper main body tube upper end is equipped with top connection by center pipe screw thread；Slips is set on central tube, under slips
Slips cone is equipped with by deblocking pin A on the upper main body tube of side；Slips cone lower end is by pin equipped with limit lantern ring A；Limit
Deblocking spring A is provided between position lantern ring A and upper main body tube；Second throttle gas nozzle lower end is threaded with company by air nozzle connector
Female connector；Connector sleeve lower thread connects the gas nozzle that once throttles；Sealing shroud, sealing shroud are equipped with by shear pin in air nozzle connector
Compressed spring is provided between primary throttling gas nozzle；Primary throttling gas nozzle lower end is connected with lower main body by connecting Internal Pipe Thread
Pipe；The lower thread of lower main body tube is connected with lower contact；Cartridge is housed on lower main body tube；In connection above cartridge
By deblocking pin B equipped with release set on pipe；One end of release set is by pin equipped with limit lantern ring B；Limit lantern ring B with connect
Deblocking spring B is provided between inner tube；It is sliding by the sealing flange being arranged on periphery on lower main body tube below cartridge
It is dynamic that extruded sleeve is housed；The upper end of extruded sleeve is equipped with sealing ring by pin；It is set on lower main body tube and lower contact below sealing ring
It is equipped with pressurizing port；Baffle ring B is provided between extruded sleeve lower end and lower contact.
The outer surface of the central tube is in graded axial type, and the lower end end of central tube is provided with thrust flanges.
The slips is made of claw and assembly cylinder；The lower end of assembly cylinder is uniformly equipped with multiple claws by shipping and reselling on another market；
The outer surface of each claw is provided with latch；The inner surface of each claw is provided with back stop slot；Back stop slot is in hook type；Back stop slot with only
The end surfaces for pushing away flange contradict connection.
Fitting flange is provided on the periphery of the upper main body tube；Fitting flange is bored by deblocking pin A and slips
Body connection；Deblocking spring A is provided between fitting flange and limit lantern ring.
The second throttle gas nozzle is by assembling shell, sealing piston, circulation cylinder, sealing cover, assembled shaft and adjustment spring A
It constitutes；The upper end of assembling shell is threadedly coupled with upper main body tube；The lower end of assembling shell is threadedly coupled with air nozzle connector；Assemble shell
Circulation cylinder is fixed with by inward flange in vivo；Assembled shaft is fixed with by sealing cover in circulation cylinder；Assembled shaft extends to inward flange
It is internal；Sliding is equipped with sealing piston in assembled shaft；Sealing piston and inward flange interval are tightly connected；Sealing piston and sealing cover it
Between be provided with adjustment spring A.
Multiple circulation long holes are evenly equipped on the periphery of the circulation cylinder, each long hole and sealing piston sliding company of circulating
It connects.
The primary throttling gas nozzle is made of upper connecting cylinder, lower connecting cylinder, limit valve rod, baffle ring A and adjustment spring B；
The upper end of upper connecting cylinder is threadedly coupled with connector sleeve；Baffle ring A is provided between upper connecting cylinder and connector sleeve；The lower end of upper connecting cylinder
It is threaded with lower connecting cylinder；By assembly cavity sliding equipped with limit valve rod in upper connecting cylinder；Limit valve rod and upper connecting cylinder it
Between be provided with adjustment spring B.
The limit valve rod is structure as a whole, it is made of valve seat, the assembly edge of a wing and sealing pin；One end of valve seat is set
It is equipped with sealing pin；The one end for sealing pin is tapered；It seals and is evenly equipped with recirculation hole on the valve seat of pin surrounding；The lower end of valve seat
The assembly edge of a wing is provided on periphery；The assembly edge of a wing and the assembly cavity of upper connecting cylinder are slidably connected；Valve seat is interior with upper connecting cylinder
Hole is slidably connected.
The outer surface of the sealing shroud is in step type；The thick end portion of sealing shroud is connected by shear pin and air nozzle connector
It connects；Compressed spring is provided between the thick end portion of sealing shroud and upper connecting cylinder；The tip portion of sealing shroud and upper connecting cylinder are sliding
Dynamic connection；The taper end end of sealing shroud and the recirculation hole interval of limit valve rod are tightly connected.
The outer surface of the connection inner tube is provided with fitting flange；Fitting flange is connected by deblocking pin B and release set
It connects；Deblocking spring B is provided between fitting flange and limit lantern ring B；Balance hole is provided on fitting flange；Connect the interior of inner tube
Hole is with a narrow upper and lower width horn-like, and sealing pin is tightly connected with the inner hole interval for connecting inner tube.
It is provided with unidirectional ratchet on the inner surface of the sealing ring, it is corresponding on the periphery of lower main body tube to be provided with
Unidirectional tooth socket；Sealing ring engages connection with lower main body tube by unidirectional ratchet.
The lower contact is barrel-shaped in lower end sealing, is evenly equipped with venthole on the periphery of lower contact；Each venthole
It is provided with sand prevention filter screen.
The utility model has the advantage of：
This has underground throttle device of second throttle function, and structure is simple, easy to use, use primary throttling gas nozzle and
The structure of second throttle gas nozzle designs, and after this kind design, which can not only be to the day of underground high temperature and pressure
Right gas is throttled twice, and once the orifice size of throttling gas nozzle and second throttle gas nozzle can be with the change of gas pressure
Change and change, its orifice size is made to match always with gas pressure, so that solve that existing flow controller has can only be single
Secondary throttling and the unadjustable problem of orifice size, meet the needs that people use.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of the central tube of the utility model；
Fig. 3 is the kava structure schematic diagram of the utility model；
Fig. 4 is the enlarged structure schematic diagram in Fig. 1 at A；
Fig. 5 is the structural schematic diagram of the second throttle gas nozzle of the utility model；
Fig. 6 be Fig. 5 in D-D to structural schematic diagram；
Fig. 7 is the structural schematic diagram of the primary throttling gas nozzle of the utility model；
Fig. 8 be Fig. 7 in E-E to structural schematic diagram；
Fig. 9 is the structural schematic diagram of the limit valve rod of the utility model；
Figure 10 is the enlarged structure schematic diagram in Fig. 1 at B；
Figure 11 is the enlarged structure schematic diagram in Fig. 1 at C；
Figure 12 sets structural schematic diagram for the utility model；
Figure 13 is the enlarged structure schematic diagram in Figure 12 at F；
Figure 14 is the enlarged structure schematic diagram in Figure 12 at G；
Figure 15 is that the utility model works normally structural schematic diagram；
Figure 16 is the deblocking structural schematic diagram of the utility model；
Figure 17 is the enlarged structure schematic diagram in Figure 16 at H；
Figure 18 is the enlarged structure schematic diagram in Figure 16 at I.
In figure：1, top connection, 2, lower contact, 3, central tube, 4, slips, 5, sand prevention filter screen, 6, second throttle gas nozzle, 7,
Primary throttling gas nozzle, 8, cartridge, 9, upper main body tube, 10, slips cone, 11, deblocking pin A, 12, limit lantern ring A, 13,
Unseal spring A, 14, air nozzle connector, 15, connector sleeve, 16, shear pin, 17, sealing shroud, 18, compressed spring, 19, connection in
Pipe, 20, lower main body tube, 21, deblocking pin B, 22, release set, 23, limit lantern ring B, 24, deblocking spring B, 25, sealing flange,
26, extruded sleeve, 27, sealing ring, 28, pressurizing port, 29, baffle ring B, 30, thrust flanges, 31, claw, 32, assembly cylinder, 33, ship and resell on another market,
34, back stop slot, 35, fitting flange, 36, assembling shell, 37, sealing piston, 38, circulation cylinder, 39, sealing cover, 40, assembled shaft,
41, adjustment spring A, 42, inward flange, 43, circulation long hole, 44, upper connecting cylinder, 45, lower connecting cylinder, 46, limit valve rod, 47, gear
Ring A, 48, adjustment spring B, 49, assembly cavity, 50, valve seat, 51, the assembly edge of a wing, 52, sealing pin, 53, recirculation hole, 54, balance
Hole.
Specific embodiment
The underground throttle device with second throttle function is bored by top connection 1, lower contact 2, central tube 3, slips 4, slips
Body 10, second throttle gas nozzle 6, primary throttling gas nozzle 7 and cartridge 8 are constituted.
Second throttle gas nozzle 6 is by assembling shell 36, sealing piston 37, circulation cylinder 38, sealing cover 39, assembled shaft 40 and adjusts
Spring A41 is constituted（Referring to Figure of description 5）；Circulation cylinder 38 is fixed with by inward flange 42 in assembling shell 36；Circulate cylinder 38
Periphery on be evenly equipped with multiple circulation long holes 43（Referring to Figure of description 6）.
Assembled shaft 40 is fixed with by sealing cover 39 in circulation cylinder 38；Assembled shaft 40 extends to inside inward flange 42；Assembly
Sliding is equipped with sealing piston 37 on axis 40；Adjustment spring A41 is provided between sealing piston 37 and sealing cover 39.Sealing piston 37
It is slidably connected with each circulation long hole 43 on circulation cylinder 38.Sealing piston 37 is intermittently tightly connected with inward flange 42.
When work, natural gas in moving process, can impact sealing piston 37 from bottom to top, it is made to overcome adjustment spring A41
Elastic force after along 40 upward sliding of assembled shaft；When gas pressure is bigger in this course, what sealing piston 37 moved up
Distance is bigger；The circulation area that the circulation long hole 43 of 37 lower section of sealing piston is connected to inward flange 42 is bigger, so secondary
Throttling gas nozzle 6 is the purpose that can reach according to gas pressure from main regulation orifice size.
36 threaded upper ends of assembling shell of second throttle gas nozzle 6 are connected with main body tube 9（Referring to Figure of description 1）；On
9 upper end of main body tube is equipped with top connection 1 by 3 screw thread of central tube；The outer surface of central tube 3 is in graded axial type, under central tube 3
End end is provided with thrust flanges 30（Referring to Figure of description 2）.
Slips 4 is set on central tube 3（Referring to Figure of description 3）, slips 4 by claw 31 and assembly cylinder 32 constitute；Dress
With being sleeved on central tube 3 in transition fit of cylinder 32；The purpose that assembly cylinder 32 and central tube 3 is arranged such is：So that
When above proposing operation to underground throttle device progress emergency stop in the course of work, slips 4 can under the influence of self gravity and inertia
It is relatively moved with central tube 3, to achieve the purpose that slips is set.
The lower end for assembling cylinder 32 33 is uniformly equipped with multiple claws 31 by shipping and reselling on another market；The outer surface of each claw 31 is provided with card
Tooth；The inner surface of each claw 31 is provided with back stop slot 34；Back stop slot 34 is in hook type；The end face of back stop slot 34 and thrust flanges 30
Interval contradicts connection.The end face of its back stop slot 34 and thrust flanges 30 contradicts after slips 4, which moves down, to be completed to set in the course of work
Connection, prevents slips 4 from moving up；And each claw 31 and thrust flanges 30 has certain distance in the radial direction, so
It avoids the problem that setting rear slips 4 being reversed and loses setting force, and can make each claw 31 after losing support, in radial direction
On can smoothly close up and disengaged with pit shaft, to ensure that smoothly completing for deblocking.
Fitting flange 35 is provided on the periphery of upper main body tube 9；It is convex by assembling on the upper main body tube 9 of 4 lower section of slips
Edge 35 conciliates offset nail A11 and slips cone 10 is housed；10 lower end of slips cone is by pin equipped with limit lantern ring A12；Limit sleeve
Deblocking spring A13 is provided between ring A12 and the fitting flange 35 of upper main body tube 9（Referring to Figure of description 4）.When deblocking pin
When A11 is cut, spring A13 is unsealed under the action of own resilient, slips cone 10 can be pushed to move down.
36 lower end of assembling shell of second throttle gas nozzle 6 is threaded with connector sleeve 15 by air nozzle connector 14；Connector sleeve
15 lower threads connect the gas nozzle 7 that once throttles.Primary throttling gas nozzle 7 is by upper connecting cylinder 44, lower connecting cylinder 45, limit valve rod
46, baffle ring A47 and adjustment spring B48 is constituted（Referring to Figure of description 7）.
The upper end of upper connecting cylinder 44 is threadedly coupled with connector sleeve 15；Baffle ring is provided between upper connecting cylinder 44 and connector sleeve 15
A47；The lower thread of upper connecting cylinder 44 is connected with lower connecting cylinder 45.
By the sliding of assembly cavity 49 equipped with limit valve rod 46 in upper connecting cylinder 44；Limit valve rod 46 be structure as a whole, it by
Valve seat 50, the assembly edge of a wing 51 and sealing pin 52 are constituted；One end of valve seat 50 is provided with sealing pin 52.
It seals and is evenly equipped with recirculation hole 53 on the valve seat 50 of 52 surrounding of pin；Assembly is provided on the lower circumferential face of valve seat 50
The edge of a wing 51；The assembly edge of a wing 51 and the assembly cavity 49 of upper connecting cylinder 44 are slidably connected；The inner hole of valve seat 50 and upper connecting cylinder 44 slides
Connection.
It limits and is provided with adjustment spring B48 between the assembly edge of a wing 51 and upper connecting cylinder 44 of valve rod 46.
Sealing shroud 17 is equipped with by shear pin 16 in air nozzle connector 14, the outer surface of sealing shroud 17 is in step type；Sealing
The thick end portion of set 17 is connect by shear pin 16 with air nozzle connector 14；The thick end portion of sealing shroud 17 and upper connecting cylinder 44 it
Between be provided with compressed spring 18；The tip portion of sealing shroud 17 is slidably connected with upper connecting cylinder 44；The taper end end of sealing shroud 17
It is intermittently tightly connected with the recirculation hole 53 of limit valve rod 46.When work, the end face of sealing shroud 17 and limit valve rod 46 can when contacting
Recirculation hole 53 is sealed.
45 lower end of lower connecting cylinder of primary throttling gas nozzle 7 is threaded with lower main body tube 20 by connecting inner tube 19；Connection
The inner hole of inner tube 19 is with a narrow upper and lower width horn-like（Referring to Figure of description 10）, sealing pin 52 and the inner hole that connect inner tube 19
Interval is tightly connected.The one end for sealing pin 52 is tapered.Sealing pin 52 is arranged such and connects the mesh of the inner hole of inner tube 19
Be：First is that the conical surface of sealing pin 52 can be good at and connect when making to seal pin 52 with the sealed connection of inner tube 19 is connect
The inner hole fitting for connecing inner tube 19, to obtain preferable sealing effect.Second is that when making work, natural gas moving process from bottom to top
Sealing piston 37 is impacted, it is made to overcome upward sliding after adjustment spring B48；When gas pressure is bigger in this course, limit
The distance that position valve rod 46 moves up is bigger；The conical surface for sealing pin 52 is remoter at a distance from the inner hole of connection inner tube 19, by
In connection inner tube 19 inner hole in horn-like, seal the conical surface of pin 52 distance it is remoter when, the circulation area of natural gas is got over
Greatly, otherwise smaller, so primary throttling gas nozzle 7 is the purpose that can reach according to the pressure of natural gas from main regulation orifice size.
The lower thread of lower main body tube 20 is connected with lower contact 2；Lower contact 2 is barrel-shaped in lower end sealing, lower contact 2
Venthole is evenly equipped on periphery；Each venthole is provided with sand prevention filter screen 5.Natural gas can pass through sand prevention filter screen 5 when work
The inside of the underground throttle device is entered, the purpose of setting sand prevention filter screen 5 is：It will be in natural gas by sand prevention filter screen 5
Impurity（Such as gravel solid granulates）, it is limited in outside, is sent out after avoiding impurity from entering underground throttle device inside with natural gas
The problem of raw wearing terrain.
Cartridge 8 is housed on lower main body tube 20；Pass through deblocking pin B21 in the connection inner tube 19 of 8 top of cartridge
Equipped with release set 22；The outer surface of connection inner tube 19 is provided with fitting flange 35；Fitting flange 35 is by unsealing pin B21 and releasing
Put 22 connection of set；One end of release set 22 is by pin equipped with limit lantern ring B23；Between fitting flange 35 and limit lantern ring B23
It is provided with deblocking spring B 24；Balance hole 54 is provided on fitting flange 35（Referring to Figure of description 10）.Balance hole 54 is set
Purpose is：So that the release of 35 two sides of fitting flange is covered 22 inside connections by balance hole 54, and then avoids release set 22 mobile
" building the pressure " occurs in the process, hinders the generation of the mobile problem of release set 22.
Extruded sleeve is equipped with by the sliding of sealing flange 25 being arranged on periphery on the lower main body tube 20 of 8 lower section of cartridge
26；The upper end of extruded sleeve 26 is equipped with sealing ring 27 by pin；Unidirectional ratchet, lower main body are provided on the inner surface of sealing ring 27
It is corresponding on the periphery of pipe 20 to be provided with unidirectional tooth socket；Sealing ring 27 passes through unidirectional ratchet and lower 20 company of engagement of main body tube
It connects.The purpose that sealing ring 27 is arranged such is：So that relative to lower main body tube 20 unidirectional movement can only occur for sealing ring 27, into
And avoid extruded sleeve 26 and complete after setting, it leads to the problem of and is unsealed in advance caused by retrogressing.
Pressurizing port 28 is provided in the lower main body tube 20 of 27 lower section of sealing ring and lower contact 2（Referring to Figure of description 11）；
Natural gas can press to it by the inside that pressurizing port 28 enters extruded sleeve 26 when work.26 lower end of extruded sleeve and lower contact 2
Between be provided with baffle ring B29.
The underground throttle device is lowered into the natural gas well first when working by the underground throttle device with second throttle function
Designated position, then emergency stop above mentions the underground throttle device, in this course, influence of the slips 4 in self gravity and inertia
Lower opposite central tube 3 moves down, and in folding process, the claw 31 of slips 4 radially struts slips 4 along the conical surface of slips cone 10
It is clamped to set the realization of slips 4 with the natural gas well borehole wall.After the completion of slips 4 is set, the underground throttle device is mentioned in stopping.
In above process, the natural gas in the natural gas well enters the inside of lower contact 2 after sand prevention filter screen 5,
And upward limit valve rod 46, it is moved up after so that it is overcome the elastic force of adjustment spring B48, and finally supported with sealing shroud 17
Touching.Sealing shroud 17 seals the recirculation hole 53 for limiting valve rod 46 at this time（Referring to Figure of description 13）, make to limit 46 lower section of valve rod
Natural gas form " building the pressure " in lower main body tube 20；Natural pressure during natural gas " building the pressure ", in lower main body tube 20
Power incrementally increases, and is entered in the annular space between extruded sleeve 26 and lower main body tube 20 by pressurizing port 28, presses to it, makes it
It pushes extruded sleeve 26 to move up and squeezes cartridge 8；Cartridge 8 generates radial deformation after being pressurized, and sets certainly to complete packing element
The completion of this underground throttle device is set（Referring to Figure of description 12）.
Instantly when the gas pressure in main body tube 20 increases to maximum rating, natural gas is pushed close by limit valve rod 46
Big envelope 17, make sealing shroud 17 cut shear pin 16 after, under the action of compressed spring 18 on move to air nozzle connector 14 contradict,
And certain distance is kept with limit valve rod 46, to prevent limit valve bar 46 from connecing again under the action of natural gas with sealing shroud 17
Touching.So far the underground throttle device enters the normal production phase（Referring to Figure of description 15）.
The underground throttle device during normal production, natural gas passes through after sand prevention filter screen 5 enters lower contact 2, under
The inner hole of main body tube 20 enters in the connection inner tube 19 of primary throttling gas nozzle 7, and passes through the inner hole of connection inner tube 19 and sealing
Gap between pin 52 enters in lower connecting cylinder 45；Connection is then sequentially passed through by the recirculation hole 53 of limit valve rod 46
Cylinder 44 and sealing shroud 17 enter in air nozzle connector 14.It then goes through inside the assembling shell 36 of second throttle gas nozzle 6.Then
Natural gas moves up after pushing sealing piston 37 to overcome the elastic force of adjustment spring A41 along assembled shaft 40, makes inward flange 42 and each circulation
Long hole 43 is connected to；Then natural gas enters in main body tube 9 after passing through inward flange 42 and each circulation long hole 43, and eventually passes through
It is exported after central tube 3 and top connection 1 along other tool strings.
In the underground throttle device normal productive process, since the inner hole of connection inner tube 19 is in horn-like, natural gas is from one
When passing through inside partial node gas mouth 7, circulation area can become larger suddenly, and then achieve the purpose that a reducing pressure by regulating flow；Furthermore
When natural gas is passed through from the inside of second throttle gas nozzle 6, natural gas enters after passing through inward flange 42 and each circulation long hole 43
Into upper main body tube 9, since the internal diameter of inward flange 42 is minimum, when natural gas passes through, its circulation area can become larger suddenly, in turn
Achieve the purpose that second throttle is depressured；According to law of conservation of energy, in the process that a reducing pressure by regulating flow and second throttle are depressured
In, enthalpy should remain unchanged inside the natural gas of front and back that throttles, since gas pressure reduces after throttling；Gas volume is swollen
It is swollen；Intermolecular distance increases, then can increase the position of interaction of molecules.The increase of position energy causes the reduction of kinetic energy, molecular kinetic energy
Reduction show as temperature reduction, so i.e. can reach to natural gas carry out decrease temperature and pressure purpose.
In above process, when gas pressure is bigger, the primary limit valve rod 46 for throttling gas nozzle 7 overcomes adjustment spring
The distance that the elastic force of B48 moves up is bigger；Limit valve rod 46 the conical surface with connect inner tube 19 inner hole at a distance from more it is remote just
It is remoter, the circulation area of natural gas（That is orifice size）It is bigger；Otherwise it is just smaller；Similarly when gas pressure is bigger, two
The sealing piston 37 of partial node gas mouth 6 overcomes the distance moved up after the elastic force of adjustment spring A41 bigger；37 lower section of sealing piston
The circulation area that is connected to inward flange 42 of circulation long hole 43（That is orifice size）It is bigger；Otherwise it is just smaller；Can so it make
The pressure of reducing pressure by regulating flow and circulation area and natural gas in second throttle pressure reduction matches.Such underground throttle device
Without replacement, that is, it can reach the purpose of maximum gas production.
When the underground throttle device with second throttle function needs to unseal after normally producing（Referring to Figure of description
16）, first by the top connection 1 of other tool jarrings underground throttle device, top connection 1 is by passing sequentially through central tube after jarring
3, upper main body tube 9, assembling shell 36, air nozzle connector 14, connector sleeve 15, upper connecting cylinder 44 and lower connecting cylinder 45 transmit jarring force
Onto connection inner tube 19.Inner tube 19 is connected by cutting deblocking pin B21 after jarring；After unsealing pin B21 cutting, release set 22
A distance is moved up under the action of unsealing spring B 24, the top of cartridge 8 is made to lose support, to complete cartridge 8
Deblocking（Referring to Figure of description 18）.
After the completion of cartridge 8 unseals, stop jarring, and the underground throttle device, top connection 1 are above mentioned by top connection 1
Upper main body tube 9 is driven to move up together by central tube 3 during moving up.After making main body tube 9 cut deblocking pin A11,
Relative movement is generated with slips 4 and slips cone 10.After unsealing pin A11 cutting, slips cone 10 is in deblocking spring A13 elastic force
Under the action of, it generates with slips 4 and moves down relatively, so that the claw 31 of slips 4 be made to lose the support of slips cone 10, and then complete
The deblocking of slips 4 continues thereafter with and mentions the underground throttle device, until being proposed that the natural gas well can be completed deblocking and salvage work
Sequence.
This has the underground throttle device of second throttle function, and structure is simple, easy to use, passes through gas nozzle and two of once throttling
The structure of partial node gas mouth designs, and makes the underground throttle device that can not only carry out two partial nodes to the natural gas of underground high temperature and pressure
Stream, and orifice size can change with the variation of gas pressure, make its orifice size always with gas pressure phase
Match, solve the problems, such as that existing flow controller has can only single throttling and orifice size it is unadjustable, meet people's use
Needs.
Claims (10)
1. a kind of underground throttle device with second throttle function, it is by top connection（1）, lower contact（2）, central tube（3）, slips
（4）, slips cone（10）, second throttle gas nozzle（6）, once throttle gas nozzle（7）And cartridge（8）It constitutes, it is characterised in that：
Second throttle gas nozzle（6）Threaded upper ends are connected with main body tube（9）；Upper main body tube（9）Upper end passes through central tube（3）Screw thread installation
There is top connection（1）；Central tube（3）On be set with slips（4）, slips（4）The upper main body tube of lower section（9）It is upper to pass through deblocking pin A
（11）Equipped with slips cone（10）；Slips cone（10）Lower end is by pin equipped with limit lantern ring A（12）；Limit lantern ring A（12）
With upper main body tube（9）Between be provided with deblocking spring A（13）；Second throttle gas nozzle（6）Lower end passes through air nozzle connector（14）Screw thread
It is connected with connector sleeve（15）；Connector sleeve（15）Lower thread connects the gas nozzle that once throttles（7）；Air nozzle connector（14）It is interior by cutting
Cut pin（16）Equipped with sealing shroud（17）, sealing shroud（17）With primary throttling gas nozzle（7）Between be provided with compressed spring（18）；One
Partial node gas mouth（7）Lower end passes through connection inner tube（19）It is threaded with lower main body tube（20）；Lower main body tube（20）Lower end spiral shell
Line is connected with lower contact（2）；Lower main body tube（20）It is upper that cartridge is housed（8）；Cartridge（8）The connection inner tube of top（19）
It is upper to pass through deblocking pin B（21）It is covered equipped with release（22）；Release set（22）One end by pin equipped with limit lantern ring B（23）；
Limit lantern ring B（23）With connect inner tube（19）Between be provided with deblocking spring B（24）；Cartridge（8）The lower main body tube of lower section
（20）The upper sealing flange by being arranged on periphery（25）Sliding is equipped with extruded sleeve（26）；Extruded sleeve（26）Upper end pass through pin
Sealing ring is bound（27）；Sealing ring（27）The lower main body tube of lower section（20）And lower contact（2）On be provided with pressurizing port（28）；It squeezes
Pressing sleeve（26）Lower end and lower contact（2）Between be provided with baffle ring B（29）.
2. a kind of underground throttle device with second throttle function according to claim 1, it is characterised in that：In described
Heart pipe（3）Outer surface be in graded axial type, central tube（3）Lower end end be provided with thrust flanges（30）；The slips（4）
By claw（31）With assembly cylinder（32）It constitutes；Assemble cylinder（32）Lower end by shipping and reselling on another market（33）Multiple claws are uniformly installed
（31）；Each claw（31）Outer surface be provided with latch；Each claw（31）Inner surface be provided with back stop slot（34）；Back stop slot
（34）In hook type；Back stop slot（34）With thrust flanges（30）End surfaces contradict connection.
3. a kind of underground throttle device with second throttle function according to claim 1, it is characterised in that：Described is upper
Main body tube（9）Periphery on be provided with fitting flange（35）；Fitting flange（35）By unsealing pin A（11）With slips cone
（10）Connection；Fitting flange（35）With limit lantern ring A（12）Between be provided with deblocking spring A（13）.
4. a kind of underground throttle device with second throttle function according to claim 1, it is characterised in that：Described two
Partial node gas mouth（6）By assembling shell（36）, sealing piston（37）, circulation cylinder（38）, sealing cover（39）, assembled shaft（40）And tune
Save spring A（41）It constitutes；Assembling shell（36）Upper end and upper main body tube（9）It is threadedly coupled；Assembling shell（36）Lower end with
Air nozzle connector（14）It is threadedly coupled；Assembling shell（36）Inside pass through inward flange（42）It is fixed with circulation cylinder（38）；Circulate cylinder（38）
Inside pass through sealing cover（39）It is fixed with assembled shaft（40）；Assembled shaft（40）Extend to inward flange（42）It is internal；Assembled shaft（40）On
Sliding is equipped with sealing piston（37）；Sealing piston（37）With inward flange（42）Interval is tightly connected；Sealing piston（37）With sealing
Lid（39）Between be provided with adjustment spring A（41）；Circulate cylinder（38）Periphery on be evenly equipped with multiple circulation long holes（43）, each to flow
Elongated hole（43）With sealing piston（37）It is slidably connected.
5. a kind of underground throttle device with second throttle function according to claim 1, it is characterised in that：Described one
Partial node gas mouth（7）By upper connecting cylinder（44）, lower connecting cylinder（45）, limit valve rod（46）, baffle ring A（47）With adjustment spring B
（48）It constitutes；Upper connecting cylinder（44）Upper end and connector sleeve（15）It is threadedly coupled；Upper connecting cylinder（44）With connector sleeve（15）Between
It is provided with baffle ring A（47）；Upper connecting cylinder（44）Lower thread be connected with lower connecting cylinder（45）；Upper connecting cylinder（44）Inside pass through dress
With chamber（49）Sliding is equipped with limit valve rod（46）；Limit valve rod（46）With upper connecting cylinder（44）Between be provided with adjustment spring B
（48）.
6. a kind of underground throttle device with second throttle function according to claim 5, it is characterised in that：The limit
Position valve rod（46）It is structure as a whole, it is by valve seat（50）, assembly the edge of a wing（51）With sealing pin（52）It constitutes；Valve seat（50）One
End is provided with sealing pin（52）；Seal pin（52）One end it is tapered；Seal pin（52）The valve seat of surrounding（50）It is upper equal
It is furnished with recirculation hole（53）；Valve seat（50）Lower circumferential face on be provided with assembly the edge of a wing（51）；Assemble the edge of a wing（51）With upper connection
Cylinder（44）Assembly cavity（49）It is slidably connected；Valve seat（50）With upper connecting cylinder（44）Inner hole be slidably connected.
7. a kind of underground throttle device with second throttle function according to claim 6, it is characterised in that：Described is close
Big envelope（17）Outer surface in step type；Sealing shroud（17）Thick end portion pass through shear pin（16）With air nozzle connector（14）Even
It connects；Sealing shroud（17）Thick end portion and upper connecting cylinder（44）Between be provided with compressed spring（18）；Sealing shroud（17）Taper end
Part and upper connecting cylinder（44）It is slidably connected；Sealing shroud（17）Taper end end and limit valve rod（46）Recirculation hole（53）Intermittently
It is tightly connected.
8. a kind of underground throttle device with second throttle function according to claim 7, it is characterised in that：The company
Connect inner tube（19）Outer surface be provided with fitting flange（35）；Fitting flange（35）By unsealing pin B（21）It is covered with release
（22）Connection；Fitting flange（35）With limit lantern ring B（23）Between be provided with deblocking spring B（24）；Fitting flange（35）On set
It is equipped with balance hole（54）；Connect inner tube（19）Inner hole it is with a narrow upper and lower width horn-like, seal pin（52）With connect inner tube
（19）Inner hole interval be tightly connected.
9. a kind of underground throttle device with second throttle function according to claim 1, it is characterised in that：Described is close
Seal ring（27）Inner surface on be provided with unidirectional ratchet, lower main body tube（20）Periphery on corresponding be provided with unidirectional tooth
Slot；Sealing ring（27）Pass through unidirectional ratchet and lower main body tube（20）Engagement connection.
10. a kind of underground throttle device with second throttle function according to claim 1, it is characterised in that：Described
Lower contact（2）Barrel-shaped, the lower contact sealed in lower end（2）Periphery on be evenly equipped with venthole；Each venthole is provided with anti-
Husky filter screen（5）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820569795.1U CN208106394U (en) | 2018-04-20 | 2018-04-20 | A kind of underground throttle device with second throttle function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820569795.1U CN208106394U (en) | 2018-04-20 | 2018-04-20 | A kind of underground throttle device with second throttle function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208106394U true CN208106394U (en) | 2018-11-16 |
Family
ID=64119385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820569795.1U Expired - Fee Related CN208106394U (en) | 2018-04-20 | 2018-04-20 | A kind of underground throttle device with second throttle function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208106394U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343405A (en) * | 2018-04-20 | 2018-07-31 | 长江大学 | A kind of underground throttle device with second throttle function |
| CN114687690A (en) * | 2022-03-31 | 2022-07-01 | 中海石油(中国)有限公司 | Slip setting mechanism and underground throttle comprising same |
-
2018
- 2018-04-20 CN CN201820569795.1U patent/CN208106394U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343405A (en) * | 2018-04-20 | 2018-07-31 | 长江大学 | A kind of underground throttle device with second throttle function |
| CN108343405B (en) * | 2018-04-20 | 2023-12-12 | 长江大学 | Underground throttle with secondary throttle function |
| CN114687690A (en) * | 2022-03-31 | 2022-07-01 | 中海石油(中国)有限公司 | Slip setting mechanism and underground throttle comprising same |
| CN114687690B (en) * | 2022-03-31 | 2024-03-29 | 中海石油(中国)有限公司 | Slip setting mechanism and downhole throttler comprising same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108343405A (en) | A kind of underground throttle device with second throttle function | |
| CN208106394U (en) | A kind of underground throttle device with second throttle function | |
| CN104963652B (en) | From sealed compression packer | |
| CN104695892B (en) | A kind of independent hydraulically-controlled type compression packer | |
| CN101929318B (en) | Stage cementing device | |
| CN105201446B (en) | Bidirectional bearing blanking plug | |
| CN204877268U (en) | Brill develops integrative device | |
| CN205977174U (en) | From soluble bridging plug device of taking fracturing ball | |
| CN206205843U (en) | Hydraulic water power formula internal cutter | |
| CN102200000A (en) | Blowout preventing box of continuous oil pipe and drill rod | |
| CN103573212A (en) | Composite casing pipe split type rubber plug device well cementing | |
| CN109763797A (en) | A kind of underground throttle device | |
| CN206111155U (en) | Flowing back is plunger instrument for gas production | |
| CN106195332A (en) | A kind of hydraulic reaming makes the unidirectional filtering type in cave from row's powder high-low pressure current switching valve | |
| CN205663427U (en) | Two -way pressure -bearing blanking plug | |
| CN106351892A (en) | Pneumatic pressure adjusting fluid pressurizing device | |
| CN205858247U (en) | Dry method well cementation well head annular space sealing device | |
| CN209011780U (en) | It is a kind of without anchoring thermal packer | |
| CN111441742A (en) | Soluble bridge plug seat sealing head bag | |
| CN205805498U (en) | A kind of big orifice hydraulic packer | |
| CN105350941B (en) | Push-down instruction device and rubber plug downlink indicate cementing head | |
| CN204827359U (en) | But integration modus ponens oil recovery bridging plug | |
| CN205781083U (en) | A kind of double safety valve with flange | |
| CN205778681U (en) | A kind of fluid pressure type wellhead polish rod packing box Self tightening device | |
| CN205330608U (en) | Prevent an expanding fracturing packer that seals midway |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181116 Termination date: 20210420 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |