CN208473811U - Preset underground throttle - Google Patents
Preset underground throttle Download PDFInfo
- Publication number
- CN208473811U CN208473811U CN201821017210.1U CN201821017210U CN208473811U CN 208473811 U CN208473811 U CN 208473811U CN 201821017210 U CN201821017210 U CN 201821017210U CN 208473811 U CN208473811 U CN 208473811U
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- Prior art keywords
- wall
- closing piece
- mandrel
- axis
- lock
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- 239000004576 sand Substances 0.000 claims abstract description 8
- 238000012856 packing Methods 0.000 claims description 18
- 125000006850 spacer group Chemical group 0.000 claims description 9
- 239000003292 glue Substances 0.000 claims 1
- 238000011161 development Methods 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 26
- 210000002445 nipple Anatomy 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002343 natural gas well Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model provides a preset underground throttler, which comprises a lock block shaft, an upper mandrel and a lower mandrel, wherein the lock block shaft is connected with the upper mandrel through shear pins, a lock block body is sleeved on the lock block shaft and is connected with a lock cap, the middle part of the lock block body is embedded with a lock block, the lower part of the lock block body is connected with a connecting section, the upper part and the lower part of the connecting section are respectively sleeved with a rubber tube and a cone section, the lower part of the cone section is connected with an air nozzle seat, the outer wall of the air nozzle seat is connected with a sand prevention cover, and the inner wall of the air nozzle; a cavity is formed among the cone section, the connecting section, the lower mandrel and the air nozzle base, an inner mandrel and a spring are arranged at the upper part of the cavity, the inner mandrel is connected with the connecting section, and the spring is clamped between the step on the inner wall of the lower mandrel and the bottom end face of the inner mandrel; the lower part of the cavity is provided with a lock ring and a safety nut from top to bottom. The utility model provides a this kind of preset downhole choke ware need not special input tool and puts in, and instrument simple structure, whole cost reduction are applicable to the downhole bottom-up of fine and close gas field development.
Description
Technical field
The utility model relates to a kind of pre-set type underground throttling devices, in particular to high pressure suitable for natural gas well production
The downhole tool of natural gas progress reducing pressure by regulating flow.
Background technique
In order to be depressured, throttle, limit the production in natural gas extraction, underground throttle device, underground are usually installed in Wellbore of Gas Wells
Flow controller is different in a manner of setting to be divided into slip-type underground throttle and pre-set type underground throttling device again.Soviet Union's Sulige gas field is wide at present
General application is slip-type underground throttle, shows that the flow controller difficulty is salvaged by the popularization and application of large area, easily causes underground
Accident.Pre-set type underground throttling device cartridge deflection is small, sealing reliability is good, and the service life is long, and cartridge once with seat
Short circuit is fallen to be detached from, outer diameter is less than pit shaft latus rectum, almost without frictional resistance when being mentioned in salvaging, so that easily salvage.
But pre-set type underground throttling device, which usually requires cooperation delivery tool, just can be achieved to launch, due to dedicated delivery tool
In the presence of leading to underground throttle device, structure is complicated.
Utility model content
The purpose of the utility model is to provide a kind of pre-set type underground throttling devices without dedicated delivery tool, existing to solve
There is underground throttle device that must cooperate flow controller caused by dedicated delivery tool the problem of structure is complicated.
For this purpose, the utility model provides a kind of pre-set type underground throttling device, it from top to bottom successively include closing piece axis, upper core
Axis and lower mandrel, the closing piece axis are connected with upper mandrel by shear pin, and closing piece body, closing piece body external wall of upper portion are set on closing piece axis
Screwed connection lock nut, interior be equipped with of the cavity formed between lock nut inner wall, closing piece body top end face and closing piece axis outer wall are sleeved on closing piece
Baffle ring on axis, closing piece body middle part outer wall are embedded with closing piece, and lower part outer wall screwed connection is sleeved on the linkage section on lower mandrel, described
The position up and down of linkage section is set with packing element and cone segments, cone segments lower inner wall screwed connection gas nozzle seat, gas nozzle seat outer wall
Sand cap is connected, inner wall connects pressure cap, installs gas nozzle on the gas nozzle seat；
The cone segments inner wall and linkage section, lower mandrel form cavity between gas nozzle seat, cavity top be equipped with inner canister and
Spring, the inner canister top are clipped between cone segments and linkage section, and with linkage section screwed connection, lower part be clipped in cone segments and
Between lower mandrel, outer wall extends radially outward out a step in the middle part of lower mandrel, and spring clip is in step and inner canister bottom face
Between；Cavity lower part is equipped with lock ring and jam nut, the lock ring outer wall and the screwed connection of cone segments inner wall, lock ring from top to bottom
Inner wall and lower mandrel outer wall screwed connection, jam nut abut lock ring, jam nut inner wall and lower mandrel outer wall screwed connection.
Further, outer wall opens up annular groove in the middle part of the closing piece axis, and annular groove is built-in with positioning ring, and closing piece axis is inserted
During entering closing piece body, positioning ring is moved down with closing piece axis.
Further, inner wall radially protrudes to form step to central axis in the middle part of the closing piece axis, and step is located at upper core
Axis upper end simultaneously limits it.
Further, the packing element is double packing elements, and middle part is set with spacer ring, and the packing element below spacer ring is in umbrella shape.
Further, the top opening diameter of the inner canister is greater than cylinder bottom opening diameter, and the middle and lower part of inner canister is opened
Hole.
The utility model has the beneficial effects that this pre-set type underground throttling device provided by the utility model, without dedicated throwing
Tool dispensing is put, tool construction is simple, overall cost reduces, and the underground suitable for fine and close gas field development is with production.
The utility model is described in further details below with reference to attached drawing.
Detailed description of the invention
Fig. 1 is that pre-set type underground throttling device is gone into the well the structural schematic diagram of state.
Fig. 2 is the structural schematic diagram that pre-set type underground throttling device sets state.
Fig. 3 is the structural schematic diagram that pre-set type underground throttling device salvages state.
Description of symbols:
1. closing piece axis；2. lock nut；3. baffle ring；4. positioning ring；5. closing piece body；6. closing piece；7. shear pin；Mandrel on 8.；9. connecting
Connect section；10. spacer ring；11. packing element；12. cone segments；13. inner canister；14. lower mandrel；15. spring；16. lock ring；17. safe spiral shell
It is female；18. gas nozzle seat；19. gas nozzle；20. pressure cap；21. sand cap.
Specific embodiment
Embodiment 1:
Present embodiments provide a kind of pre-set type underground throttling device, as shown in Figure 1, from top to bottom successively include closing piece axis 1,
Upper mandrel 8 and lower mandrel 14, the closing piece axis 1 and upper mandrel 8 are connected by shear pin 7, and closing piece body 5, lock are set on closing piece axis 1
5 external wall of upper portion screwed connection lock nut 2 of block, the cavity formed between 1 outer wall of 2 inner wall of lock nut, 5 top end face of closing piece body and closing piece axis
Interior 5 middle part outer wall of closing piece body is embedded with closing piece 6 equipped with the baffle ring 3 being sleeved on closing piece axis 1, and lower part outer wall screwed connection is sleeved on
Linkage section 9 on lower mandrel 14, the position up and down of the linkage section 9 are set with packing element 11 and cone segments 12, under cone segments 12
Portion's inner wall screwed connection gas nozzle seat 18,18 outer wall of gas nozzle seat connect sand cap 21, and inner wall connects pressure cap 20, on the gas nozzle seat 18
Gas nozzle 19 is installed；
12 inner wall of cone segments and linkage section 9, lower mandrel 14 form cavity between gas nozzle seat 18, and cavity top is equipped with
Inner canister 13 and spring 15,13 top of inner canister are clipped between cone segments 12 and linkage section 9, and are connected with 9 screw thread of linkage section
It connects, lower part is clipped between cone segments 12 and lower mandrel 14, and lower 14 middle part outer wall of mandrel extends radially outward out a step, bullet
Spring 15 is clipped between 13 bottom face of step and inner canister；Cavity lower part is equipped with lock ring 16 and jam nut 17 from top to bottom, described
16 outer wall of lock ring and 12 inner wall screwed connection of cone segments, 16 inner wall of lock ring and lower 14 outer wall screwed connection of mandrel, jam nut 17
Abut lock ring 16,17 inner wall of jam nut and lower 14 outer wall screwed connection of mandrel.
As shown in Figure 1, Figure 2 and Figure 3, the present embodiment pre-set type underground throttling device include: closing piece axis 1, lock nut 2, baffle ring 3,
Positioning ring 4, closing piece body 5, closing piece 6, shear pin 7, upper mandrel 8, linkage section 9, spacer ring 10, packing element 11, cone segments 12, inner canister 13,
Lower mandrel 14, spring 15, lock ring 16, jam nut 17, gas nozzle seat 18, gas nozzle 19, pressure cap 20, sand cap 21.
The connection and installation of above-mentioned each component are as follows: closing piece axis 1 is connect with the upper shear pin 7 of mandrel 8, and positioning ring 4 passes through lock
Block axis 1 is simultaneously put into its slot, and lock nut 2 is passed through above whole and is inserted into the closing piece body 5 embedded with closing piece 6, is put into baffle ring 3 and is then locked
Cap 2 and 5 screwed connection of closing piece body；Packing element 11, spacer ring 10, cone segments 12 sequentially pass through linkage section 9, linkage section 9 with closing piece body 5
Button connection；Spring 15, inner canister 13 sequentially pass through lower mandrel 14, and it is intracavitary integrally to fill in cone segments 12, inner canister 13 and linkage section 9
Screwed connection, spring 15 is gradually compressed at this time, until spring 15 is fully compressed stopping and tightens screw thread；Lock ring 16 and cone segments
Screwed connection in the connection of 12 male threads and lower mandrel 14, jam nut 17 and screwed connection in lower mandrel 14；Gas nozzle 19 is put into gas
Mouth seat 18 is intracavitary and with pressure cap 20 and 18 screwed connection of gas nozzle seat, after sand cap 21 and 18 screwed connection of gas nozzle seat, gas nozzle seat 18
With 12 screwed connection of cone segments.
It should be strongly noted that increasing shear pin 7 between closing piece axis 1 and upper mandrel 8, upper mandrel 8 passes through during going into the well
Lower 14 compressed spring 15 of mandrel, playing makes packing element 11 keep reset condition；Phase occurs for closing piece axis 1 and upper mandrel 8 during giving up
To displacement, shear pin 7 is caused to be cut, the power of compressed spring 15 disappears, and lower mandrel 14 finally drives cone segments 12 relative to tool
Entirety moves up, and packing element 11 struts seal shaft.
In conjunction with Fig. 2, it is as follows that pre-set type underground throttling device provided in this embodiment launches the process set:
Before dispensing, fishing tool is inserted into the closing piece axis 1 of pre-set type underground throttling device.It is connected when dispensing with steel wire tool string
Fishing tool simultaneously launches pre-set type underground throttling device into the seating nipple of designated position, specifically, due to the limit of closing piece body 5
The presence of step, cause tool can not downlink, downward jarring tool string, closing piece axis 1 is moved down relative to closing piece body 5, due to closing piece
The effect of 1 step of axis, closing piece 6 are pushed into seating nipple slot by closing piece axis 1；At the same time, it is connect due to closing piece axis 1 with upper mandrel 8
Shear pin 7 cut, the release of spring 15, cause lower mandrel 14, lock ring 16, jam nut 17, gas nozzle seat 18, gas nozzle 19, pressure
Cap 20, sand cap 21 and cone segments 12 move up relative to linkage section 9 and compress packing element 11 and preset seating nipple sealing surface seals,
When closing piece axis 1 is adequately inserted closing piece body 5, fishing tool shear pin is cut to be disengaged with pre-set type underground throttling device, above mentions steel wire
Tool string is completed to launch.
In conjunction with Fig. 3, the process that pre-set type underground throttling device is salvaged in the present embodiment is as follows:
When gas well is produced with pre-set type underground throttling device to when needing to salvage, it is lowered into steel wire connection fishing tool preset
Formula throttle positions are above mentioned when fishing tool insertion closing piece axis 1 is intracavitary, and closing piece axis 1 is moved up relative to closing piece body 5 at this time, in advance
It sets seating nipple external force compression closing piece 6 and is returned to 1 bottleneck of closing piece axis, realize unlock, outer diameter is less than preset work at closing piece 6 at this time
Make cylinder internal diameter, tool is whole to be moved up with steel wire tool string with closing piece axis 1, is salvaged successfully.Due to the effect of baffle ring 3, when above mentioning
Closing piece body 5 will not be separated with closing piece axis 1.
Referring to the launch process of above-mentioned pre-set type underground throttling device, pre-set type underground throttling device provided in this embodiment need not
Dedicated delivery tool is launched, and tool construction is simple, overall cost reduces.
Embodiment 2:
On the basis of embodiment 1, as shown in Figure 1, Figure 2 and Figure 3, the 1 middle part outer wall of closing piece axis opens up annular groove,
Annular groove is built-in with positioning ring 4, and during closing piece axis 1 is inserted into closing piece body 5, positioning ring 4 is moved down with closing piece axis 1.
Closing piece axis 1 is inserted into during closing piece body 5, and positioning ring 4 is also moved down with closing piece axis 1, when gas well opening well and making production,
Positioning ring 4 plays the role of fixed closing piece axis 1, and closing piece axis 1 is made with air motion, closing piece 6 and preset seating nipple not to be avoided to lock
It is unstable.
When gas well is produced with pre-set type underground throttling device to when needing to salvage, it is lowered into steel wire connection fishing tool preset
Formula throttle positions are above mentioned when fishing tool insertion closing piece axis 1 is intracavitary, and closing piece axis 1, positioning ring 4 are relative to closing piece body 5 at this time
It moves up, preset seating nipple external force compression closing piece 6 is returned to 1 bottleneck of closing piece axis, realizes unlock, outer diameter is small at closing piece 6 at this time
In preset seating nipple internal diameter, tool is whole to be moved up with steel wire tool string with closing piece axis 1, is salvaged successfully.
Embodiment 3:
On the basis of embodiment 1, as shown in Figure 1, Figure 2 and Figure 3, the 1 middle part inner wall of closing piece axis is radially to center
Axis protrudes to form step, and step is located at upper 8 upper end of mandrel and limits to it.
The step of 1 inner cavity of closing piece axis rises to upper 8 position-limiting action of mandrel, and air-flow blows out upper mandrel 8 preset when avoiding producing
Except formula underground throttle device tool.
Embodiment 4:
On the basis of embodiment 1, as shown in Figure 1, Figure 2 and Figure 3, the packing element 11 is double packing elements, and middle part is set with
Spacer ring 10, and the packing element 11 of 10 lower section of spacer ring is in umbrella shape.
Specifically, the beveled structure of 11 lower part of packing element go into the well and dispensing state in, upper compressive with cone segments 12,
Form dual-seal guarantee.
Embodiment 5:
On the basis of embodiment 1, as shown in Figure 1, Figure 2 and Figure 3, the top opening diameter of the inner canister 13 is greater than cylinder
Bottom opening diameter, and the middle and lower part aperture of inner canister 13.The purpose of aperture is to facilitate the processing of inner canister 13.
Pre-set type underground throttling device provided in this embodiment is launched without dedicated delivery tool, and tool construction is simple, whole
Cost reduces.
Exemplified as above is only to the utility model for example, not constituting to the protection scope of the utility model
Limitation, within all designs the same or similar with the utility model all belong to the scope of protection of the present invention.The present embodiment does not have
The well-known components and common structure or conventional means of the component and the structure category industry that describe in detail, do not describe one by one here.
Claims (5)
1. a kind of pre-set type underground throttling device, it is characterised in that: from top to bottom successively include closing piece axis (1), upper mandrel (8) and under
Mandrel (14), the closing piece axis (1) and upper mandrel (8) are connected by shear pin (7), are set with closing piece body (5) on closing piece axis (1),
Closing piece body (5) external wall of upper portion screwed connection lock nut (2), lock nut (2) inner wall, closing piece body (5) top end face and closing piece axis (1) outer wall it
Between be equipped with the baffle ring (3) being sleeved on closing piece axis (1) in the cavity that is formed, outer wall is embedded with closing piece (6) in the middle part of closing piece body (5), under
Portion's outer wall screwed connection is sleeved on the linkage section (9) on lower mandrel (14), and the position up and down of the linkage section (9) is set with glue
Cylinder (11) and cone segments (12), cone segments (12) lower inner wall screwed connection gas nozzle seat (18), the connection of gas nozzle seat (18) outer wall are anti-
Sand cover (21), inner wall connect pressure cap (20), install gas nozzle (19) on the gas nozzle seat (18)；
Cone segments (12) inner wall and linkage section (9), lower mandrel (14) form cavity, cavity top between gas nozzle seat (18)
Equipped with inner canister (13) and spring (15), inner canister (13) top is clipped between cone segments (12) and linkage section (9), and with
Linkage section (9) screwed connection, lower part are clipped between cone segments (12) and lower mandrel (14), and lower mandrel (14) middle part outer wall is radially
A step is extended outward, spring (15) is clipped between step and inner canister (13) bottom face；Cavity lower part is set from top to bottom
There are lock ring (16) and jam nut (17), lock ring (16) outer wall and cone segments (12) inner wall screwed connection, lock ring (16) is interior
Wall and lower mandrel (14) outer wall screwed connection, jam nut (17) abut lock ring (16), jam nut (17) inner wall and lower mandrel
(14) outer wall screwed connection.
2. pre-set type underground throttling device as described in claim 1, it is characterised in that: outer wall opens up in the middle part of the closing piece axis (1)
Annular groove, annular groove are built-in with positioning ring (4), and during closing piece axis (1) is inserted into closing piece body (5), positioning ring (4) is with lock
Block axis (1) moves down together.
3. pre-set type underground throttling device as described in claim 1, it is characterised in that: inner wall is along diameter in the middle part of the closing piece axis (1)
Step is formed to protruding to central axis, step is located at upper mandrel (8) upper end and limits to it.
4. pre-set type underground throttling device as described in claim 1, it is characterised in that: the packing element (11) is double packing elements, wherein
Portion is set with spacer ring (10), and the packing element (11) below spacer ring (10) is in umbrella shape.
5. pre-set type underground throttling device as described in claim 1, it is characterised in that: the top opening of the inner canister (13) is straight
Diameter is greater than cylinder bottom opening diameter, and the middle and lower part aperture of inner canister (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821017210.1U CN208473811U (en) | 2018-06-29 | 2018-06-29 | Preset underground throttle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821017210.1U CN208473811U (en) | 2018-06-29 | 2018-06-29 | Preset underground throttle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208473811U true CN208473811U (en) | 2019-02-05 |
Family
ID=65212170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821017210.1U Active CN208473811U (en) | 2018-06-29 | 2018-06-29 | Preset underground throttle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208473811U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113338838A (en) * | 2020-03-02 | 2021-09-03 | 中国石油天然气股份有限公司 | Preset underground throttle, underground throttle process pipe column and gas production pipe column |
-
2018
- 2018-06-29 CN CN201821017210.1U patent/CN208473811U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113338838A (en) * | 2020-03-02 | 2021-09-03 | 中国石油天然气股份有限公司 | Preset underground throttle, underground throttle process pipe column and gas production pipe column |
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