CN108343405A - 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
- CN108343405A CN108343405A CN201810360445.9A CN201810360445A CN108343405A CN 108343405 A CN108343405 A CN 108343405A CN 201810360445 A CN201810360445 A CN 201810360445A CN 108343405 A CN108343405 A CN 108343405A
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims description 96
- 210000000078 claw Anatomy 0.000 claims description 17
- 238000005520 cutting process Methods 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 59
- 239000007789 gas Substances 0.000 abstract description 58
- 239000003345 natural gas Substances 0.000 abstract description 29
- 238000000605 extraction Methods 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 18
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 230000002265 prevention Effects 0.000 description 8
- 239000004576 sand Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 5
- 239000002343 natural gas well Substances 0.000 description 5
- 230000009467 reduction Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 210000003781 tooth socket Anatomy 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007704 transition Effects 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
Landscapes
- 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)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The present invention relates to a kind of underground throttle devices with second throttle function, belong to oil, 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, it is simple in structure, 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 present invention relates to a kind of underground throttle devices with second throttle function, belong to natural gas extraction drilling tool technology neck
Domain.
Background technology
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 effectively stablize carry out 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；In addition 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 that often flow controller will be carried out to salvage to replace different model,
So that its orifice size matches with gas well well pressure, and then there is the complicated for operation and high problem of 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.
Invention content
It is an object of the invention to：There is provided it is a kind of simple in structure, easy to use, can only with solve that existing flow controller has
Single throttles and the underground throttle device with second throttle function of the unadjustable problem of orifice size.
The technical scheme is that：
A kind of underground throttle device with second throttle function, it by top connection, lower contact, central tube, slips, slips cone,
Second throttle gas nozzle, primary throttling gas nozzle and cartridge are constituted, it is characterised in that：Second throttle gas nozzle threaded upper ends are connected with
Upper 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, below slips
Slips cone is housed by unsealing pin A on upper main body tube；Slips cone lower end is by pin equipped with limit lantern ring A；Stop collar
Deblocking spring A is provided between ring A and upper main body tube；Second throttle gas nozzle lower end is threaded with connection by air nozzle connector
Set；Connector sleeve lower thread connects the gas nozzle that once throttles；Sealing shroud is equipped with by shear pin in air nozzle connector, sealing shroud with
It is provided with compressed spring 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
It is covered equipped with release on pipe by unsealing pin B；The one end for discharging set is equipped with limit lantern ring B by pin；It limits lantern ring B and connect
Deblocking spring B is provided between inner tube；It is slided 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.
It is provided with fitting flange on the periphery of the upper main body tube；Fitting flange is bored by unsealing pin A with slips
Body connects；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 is tightly connected with inward flange interval；Sealing piston and sealing cover it
Between be provided with adjustment spring A.
Multiple circulation slot holes are evenly equipped on the periphery of the circulation cylinder, each slot hole that circulates connects with sealing piston sliding
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；It is provided with compressed spring between the thick end portion of sealing shroud and upper connecting cylinder；The tip portion of sealing shroud is slided with upper connecting cylinder
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 unsealing pin B with release set
It connects；It is provided with deblocking spring B 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 endoporus 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 by unidirectional ratchet with lower main body tube.
The lower contact is barrel-shaped in lower end sealing, and venthole is evenly equipped on the periphery of lower contact；Each venthole
It is interior that sand prevention filter screen is housed.
The advantage of the invention is that：
This carries underground throttle device of second throttle function, simple in structure, easy to use, uses primary throttling gas nozzle and secondary
The structure design of throttling gas nozzle, after being designed using this kind, which can not only be to the natural gas of underground high temperature and pressure
Throttled twice, and the orifice size of once throttle gas nozzle and second throttle gas nozzle can with the variation of gas pressure and
Variation, makes its orifice size match always with gas pressure, to solve that existing flow controller has can only single section
Stream and the unadjustable problem of orifice size, meet the needs that people use.
Attached drawing says figure
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of the central tube of the present invention；
Fig. 3 is the slips structural schematic diagram of the present invention；
Fig. 4 is the enlarged structure schematic diagram at A in Fig. 1；
Fig. 5 is the structural schematic diagram of the second throttle gas nozzle of the present invention；
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 present invention；
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 present invention；
Figure 10 is the enlarged structure schematic diagram at B in Fig. 1；
Figure 11 is the enlarged structure schematic diagram at C in Fig. 1；
Figure 12 sets structural schematic diagram for the present invention's；
Figure 13 is the enlarged structure schematic diagram at F in Figure 12；
Figure 14 is the enlarged structure schematic diagram at G in Figure 12；
Figure 15 is present invention normal work structural schematic diagram；
Figure 16 is the deblocking structural schematic diagram of the present invention；
Figure 17 is the enlarged structure schematic diagram at H in Figure 16；
Figure 18 is the enlarged structure schematic diagram at I in Figure 16.
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 cartridges, 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, in connection
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 slot 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 implementation mode
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 slot 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 slot 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 slot 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 cooperation 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 its own 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.Its back stop slot 34 and the end face of thrust flanges 30 contradict 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；Stop collar
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 under the action of own resilient for deblocking, and 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 are constituted（Referring to Figure of description 7）.
The upper end of upper connecting cylinder 44 is threadedly coupled with connector sleeve 15；It is provided with baffle ring 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；It is provided with assembly 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；Valve seat 50 and the endoporus of upper connecting cylinder 44 slide
Connection.
It is provided with adjustment spring B48 between the assembly edge of a wing 51 and upper connecting cylinder 44 of limit 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 can when being contacted with limit valve rod 46
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 endoporus of inner tube 19 is with a narrow upper and lower width horn-like（Referring to Figure of description 10）, seal pin 52 and the endoporus 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 endoporus of inner tube 19
Be：First, when making sealing pin 52 with the sealed connection of inner tube 19 is connect, the conical surface of sealing pin 52 can be good at and connect
The endoporus 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 endoporus of connection inner tube 19, by
It is in horn-like in the endoporus of connection inner tube 19, when the distance of the conical surface of sealing pin 52 is remoter, 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；Sand prevention filter screen 5 is housed in each venthole.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；By unsealing 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 both sides of fitting flange is covered 22 inside connections by balance hole 54, and then avoids 22 movement of release set
" building the pressure " occurs in the process, hinders the generation of 22 movement problem of release set.
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 is unsealed in advance caused by leading to the problem of retrogressing.
It is provided with pressurizing port 28 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 be entered the inside of extruded sleeve 26 by pressurizing port 28 and be pressed to it 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 by the underground throttle device with second throttle function first when working
Designated position, then emergency stop above carry the underground throttle device, in this course, influence of the slips 4 in its own 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 that the realization of slips 4 is made to set with the natural gas well borehole wall.After the completion of slips 4 is set, the underground throttle device is carried 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
It touches.Sealing shroud 17 seals the recirculation hole 53 for limiting valve rod 46 at this time（Referring to Figure of description 13）, make 46 lower section of limit valve rod
Natural gas form " building the pressure " in the lower main body tube 20；During natural gas " building the pressure ", the natural 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
Extruded sleeve 26 is pushed to move up crush seal packing element 8；Cartridge 8 generates radial deformation after being pressurized, and is set 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 being connect again with sealing shroud 17 under the action of natural gas
It touches.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 is after sand prevention filter screen 5 enters lower contact 2, under
The endoporus of main body tube 20 enters in the connection inner tube 19 of primary throttling gas nozzle 7, and endoporus and sealing by connecting inner tube 19
Gap between pin 52 enters in lower connecting cylinder 45；Then upper connection is sequentially passed through by limiting the recirculation hole 53 of 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
Slot hole 43 is connected to；Then natural gas enters after passing through inward flange 42 and each circulation slot hole 43 in main body tube 9, and eventually passes through
It is exported along other tool strings after central tube 3 and top connection 1.
In the underground throttle device normal productive process, since the endoporus of connection inner tube 19 is in horn-like, natural gas is from one
When 7 inside of partial node gas mouth passes through, circulation area can become larger suddenly, and then achieve the purpose that a reducing pressure by regulating flow；In addition
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 slot 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 front and back natural gas that throttles, since gas pressure reduces after throttling；Gas volume is swollen
It is swollen；Intermolecular distance increases, then the potential energy of interaction of molecules is made to increase.The increase of potential 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 endoporus 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 slot 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 replacing, you can achieve the purpose that maximum gas production.
When the underground throttle device with second throttle function needs deblocking 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 after jarring by passing sequentially through central tube
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 cuttings, 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 carried by top connection 1
Upper main body tube 9 is driven to move up together by central tube 3 during moving up.After so that upper main body tube 9 is cut deblocking pin A11,
Relative movement is generated with slips 4 and slips cone 10.After unsealing pin A11 cuttings, slips cone 10 is in deblocking spring A13 elastic force
Under the action of, it generates with slips 4 and moves down relatively, to make the claw 31 of slips 4 lose the support of slips cone 10, and then complete
The deblocking of slips 4 continues thereafter with and carries the underground throttle device, until being proposed that the natural gas well can be completed deblocking and salvage work
Sequence.
This carries the underground throttle device of second throttle function, simple in structure, easy to use, passes through gas nozzle and two of once throttling
The structure design of partial node gas mouth 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 is installed
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 is by connecting 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（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 slot 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）Endoporus 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 with 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）Endoporus it is with a narrow upper and lower width horn-like, seal pin（52）With connect inner tube
（19）Endoporus 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；Equipped with anti-in each venthole
Husky filter screen（5）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810360445.9A CN108343405B (en) | 2018-04-20 | 2018-04-20 | Underground throttle with secondary throttle function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810360445.9A CN108343405B (en) | 2018-04-20 | 2018-04-20 | Underground throttle with secondary throttle function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108343405A true CN108343405A (en) | 2018-07-31 |
| CN108343405B CN108343405B (en) | 2023-12-12 |
Family
ID=62955170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810360445.9A Active CN108343405B (en) | 2018-04-20 | 2018-04-20 | Underground throttle with secondary throttle function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108343405B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057761A (en) * | 2018-08-14 | 2018-12-21 | 哈尔滨艾拓普科技有限公司 | A kind of natural gas well underground throttle device of automatically controlled dispensing and salvaging |
| CN112922564A (en) * | 2021-02-04 | 2021-06-08 | 西安石油大学 | Underground throttling device based on special degradable alloy ball conical plug adjustment |
| 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 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060175052A1 (en) * | 2005-02-08 | 2006-08-10 | Tips Timothy R | Flow regulator for use in a subterranean well |
| CN103410485A (en) * | 2013-08-14 | 2013-11-27 | 东北石油大学 | Hole-regulating variable-pressure down-hole choke |
| WO2014153314A1 (en) * | 2013-03-18 | 2014-09-25 | Schlumberger Canada Limited | Sleeve valve |
| US20160123112A1 (en) * | 2013-06-07 | 2016-05-05 | Petrowell Limited | Choke |
| CN106014356A (en) * | 2016-07-12 | 2016-10-12 | 泸州聚源石油科技有限公司 | Sand-controlled movable type downhole throttle capable of balancing pressure |
| CN106285580A (en) * | 2016-09-30 | 2017-01-04 | 中国石油化工股份有限公司 | A kind of underground throttle device |
| CN208106394U (en) * | 2018-04-20 | 2018-11-16 | 长江大学 | A kind of underground throttle device with second throttle function |
-
2018
- 2018-04-20 CN CN201810360445.9A patent/CN108343405B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060175052A1 (en) * | 2005-02-08 | 2006-08-10 | Tips Timothy R | Flow regulator for use in a subterranean well |
| WO2014153314A1 (en) * | 2013-03-18 | 2014-09-25 | Schlumberger Canada Limited | Sleeve valve |
| US20160123112A1 (en) * | 2013-06-07 | 2016-05-05 | Petrowell Limited | Choke |
| CN103410485A (en) * | 2013-08-14 | 2013-11-27 | 东北石油大学 | Hole-regulating variable-pressure down-hole choke |
| CN106014356A (en) * | 2016-07-12 | 2016-10-12 | 泸州聚源石油科技有限公司 | Sand-controlled movable type downhole throttle capable of balancing pressure |
| CN106285580A (en) * | 2016-09-30 | 2017-01-04 | 中国石油化工股份有限公司 | A kind of underground throttle device |
| CN208106394U (en) * | 2018-04-20 | 2018-11-16 | 长江大学 | A kind of underground throttle device with second throttle function |
Non-Patent Citations (1)
| Title |
|---|
| 卫亚明;肖述琴;杨旭东;于志刚;李旭日;: "单胶筒防下滑井下节流装置的研制与应用", 石油机械, no. 07, pages 71 - 73 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057761A (en) * | 2018-08-14 | 2018-12-21 | 哈尔滨艾拓普科技有限公司 | A kind of natural gas well underground throttle device of automatically controlled dispensing and salvaging |
| CN109057761B (en) * | 2018-08-14 | 2020-09-29 | 哈尔滨艾拓普科技有限公司 | Natural gas well underground throttle for electric control throwing and fishing |
| CN112922564A (en) * | 2021-02-04 | 2021-06-08 | 西安石油大学 | Underground throttling device based on special degradable alloy ball conical plug adjustment |
| CN112922564B (en) * | 2021-02-04 | 2023-06-30 | 西安石油大学 | Underground throttling device based on special degradable alloy ball taper plug adjustment |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108343405B (en) | 2023-12-12 |
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 | |
| CN105201446B (en) | Bidirectional bearing blanking plug | |
| CN101929318B (en) | Stage cementing device | |
| CN204877268U (en) | Brill develops integrative device | |
| CN106195332B (en) | A kind of hydraulic reaming makes cave with unidirectional filtering type from row's powder high-low pressure water flow switching valve | |
| CN208330272U (en) | A kind of solvable bridge plug for shale gas refracturing | |
| CN107859509A (en) | Coal seam hydraulic slotted liner technique joint pressure break synthesis permeability improvement device | |
| CN109763797A (en) | A kind of underground throttle device | |
| CN108798520B (en) | A kind of underground drop, which is rubbed, subtracts the shimmy drilling tool of torsion | |
| CN205663427U (en) | Two -way pressure -bearing blanking plug | |
| CN201021612Y (en) | Separation device for dense SAGD steam driven gas injection well | |
| CN206111155U (en) | Flowing back is plunger instrument for gas production | |
| CN209011780U (en) | It is a kind of without anchoring thermal packer | |
| CN111441742A (en) | Soluble bridge plug seat sealing head bag | |
| CN106351892A (en) | Pneumatic pressure adjusting fluid pressurizing device | |
| CN106285580A (en) | A kind of underground throttle device | |
| CN105201464A (en) | Double-throttling-nozzle downhole throttling device | |
| CN205805498U (en) | A kind of big orifice hydraulic packer | |
| CN206785321U (en) | A kind of self-closing efficient drilling rod of spiral | |
| CN214403438U (en) | Drilling and reaming integrated device for anchoring hole | |
| CN204827359U (en) | But integration modus ponens oil recovery bridging plug | |
| CN205330608U (en) | Prevent an expanding fracturing packer that seals midway | |
| CN204941444U (en) | A kind of anti counter-flowing hollow rubber plug | |
| CN205743697U (en) | A kind of reacting cycle down-the-hole air hammer and drill bit disconnecting prevention structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |