CN105201464B - A kind of binodal stem bar underground throttle device - Google Patents
A kind of binodal stem bar underground throttle device Download PDFInfo
- Publication number
- CN105201464B CN105201464B CN201510613299.2A CN201510613299A CN105201464B CN 105201464 B CN105201464 B CN 105201464B CN 201510613299 A CN201510613299 A CN 201510613299A CN 105201464 B CN105201464 B CN 105201464B
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- center tube
- tube
- spring
- mandrel
- endoporus
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Abstract
The present invention relates to the binodal stem bar underground throttle device used in a kind of oil field gas well gas exploitation course.The problem of flow nipple is changed in underground during its solution gas well liquid loading.Its technical scheme is：Upper flow nipple is inserted in mandrel lower step hole, and pressure cap and the connection of mandrel step aperture screw thread, spring a are arranged on the cylindrical middle bench of mandrel；Mandrel, upper flow nipple, pressure cap and spring a integrally insert upper center tube inner chamber；End cap and the screwed connection of upper center tube top, end cap lower end holddown spring a；Lower flow nipple is inserted in the stepped hole on lower center tube endoporus top, lower center tube upper end and the screwed connection of upper center tube lower end, and spring d is arranged on the cylindrical step of lower center tube；Lower shell upper end and the screwed connection of outer barrel lower end；Screwed connection in the middle part of upper conical-tube top and lower shell, O-ring seal is arranged in upper conical-tube lower step.The present invention can realize that underground changes orifice dimensions when gas well yield changes using well head injection pressure.
Description
Technical field
The present invention relates to the binodal stem bar underground throttle device used in a kind of oil field gas well gas exploitation course.
Background technology
During the construction of natural gas fields, gas well borehole pressure is higher, it is necessary to install the production that reducing pressure by regulating flow device controls gas well
Tolerance, can be only achieved the purpose of steady production.During reducing pressure by regulating flow, natural gas is dropped rapidly by pressure after flow nipple
Low, rapid spatial expansion causes natural gas temperature to reduce.And generally all contain a certain proportion of moisture in natural gas, natural gas
When temperature reduction reaches Investigation On The Hydrate Formation Conditions, hydrate will be condensed, occurs Hydrate Plugging flow string and surface line
Situation, had a strong impact on the normal production of gas well.
Downhole Choking Technology is that underground throttle device is arranged on to position appropriate in oil pipe, and reducing pressure by regulating flow is realized in underground
Effect.Downhole Choking Technology is heated using stratum heat energy to the cryogenic natural gas after throttling, it is to avoid the generation of hydrate, is prevented
Only Hydrate Plugging production pipeline, improves gas well yield.And current underground throttle device all only one of which flow nipples, with gas well
The generation time increases, gas well yield reduction, it is necessary to change the flow nipple of small size, and this is just must be overall by underground throttle device
Salvage to ground, change flow nipple.The salvaging and dispensing of underground throttle device are all bothered very much, costly.
Based on above-mentioned technical background, the present invention is special to provide a kind of binodal stem bar underground throttle device, to adapt to gas well yield hair
Match somebody with somebody production demand during changing.
The content of the invention
The purpose of the present invention is：In order to during solving gas well liquid loading, realize the problem of flow nipple is changed in underground, spy provides
A kind of binodal stem bar underground throttle device.
In order to achieve the above object, the present invention uses following technical scheme：A kind of binodal stem bar underground throttle device, is by throwing
Put head, end cap, dispensing cut off, upper center tube, spring a, outer barrel, spacer pin, steel ball, the collar, spring b, mandrel, upper flow nipple,
Pressure cap, fishing head, spring c, slips, lower shell, lower flow nipple, spring d, upper conical-tube, O-ring seal, lower center tube, slower conical tube,
Fastening nut and sand cap are constituted；Its architectural feature is：Head and top launched pipeline screwed connection are delivered, head bottom is delivered and outer
Cylinder top cuts off connection with dispensing；Mandrel top is set to screw thread, and the cylindrical middle part of mandrel, which is set, sets one below a step, step
Groove is enclosed, mandrel endoporus bottom sets a stepped hole, and stepped hole aperture is set to screw thread；Upper flow nipple inserts mandrel lower step
In hole, pressure cap and the connection of mandrel step aperture screw thread, spring a are arranged on the cylindrical middle bench of mandrel；In upper center tube
Hole bottom sets a step, and circumferential be uniformly arranged below three through holes, through hole is provided with steam vent a in the middle part of upper center tube, it is upper in
Heart pipe top sets one and enters to press hole；Spring c is arranged on the step of upper center tube endoporus bottom, mandrel, upper flow nipple, pressure cap
Upper center tube inner chamber is integrally inserted with spring a；End cap and the screwed connection of upper center tube top, end cap lower end holddown spring a；In lower
Heart pipe orifice top is set to stepped hole, and stepped hole aperture is set to screw thread, and the cylindrical top of lower center tube sets a step；Lower section
Stem bar is inserted in the stepped hole on lower center tube endoporus top, lower center tube upper end and the screwed connection of upper center tube lower end, spring d peaces
On the cylindrical step of lower center tube；Collar endoporus top sets one to enclose groove, and three steel balls are arranged on three in the middle part of upper center tube
In individual through hole, steel ball size is more than upper center tube wall thickness, and the collar is enclosed on outside upper center tube, and a steel ball part is absorbed in collar endoporus
Groove in；Set in the middle part of outer barrel endoporus and the row of being provided with below two pin-and-holes, step is circumferentially uniformly arranged above a step, step
Stomata b；Spring b is arranged on the step in the middle part of outer barrel endoporus；Upper center tube, mandrel, steel ball and the collar are integrally inserted in outer barrel
Chamber, two spacer pins are arranged in two pin-and-holes of upper center tube；Fishing head inner chamber bottom is set to stepped hole, on fishing head is cylindrical
Portion sets one to enclose groove, and fishing head bottom is circumferentially uniformly arranged three rectangular through-holes；It is convex that slips upper end extrados is set to rectangle
Hook is played, slips lower end extrados is set to zigzag；The rectangular preiection hook of three slips upper ends is separately mounted to fishing head
In the rectangular through-hole of bottom three, fishing head and three slips are integrally enclosed on outside outer barrel；Lower shell inner chamber lower end sets a circle convex
Inner edge is played, the cylindrical middle part of lower shell is set to screw thread；Lower shell upper end and the screwed connection of outer barrel lower end, lower shell inner chamber lower end
Raised inner edge holddown spring d；Epicone tube inner chamber top is set to screw thread, and the cylindrical top of upper conical-tube is set to circular conical surface, it is cylindrical under
Portion is set to step；Screwed connection in the middle part of upper conical-tube top and lower shell, O-ring seal is arranged in upper conical-tube lower step；Under
One raised step is set in the middle part of cone cylinder inner chamber, and the cylindrical top of lower shell is set to circular conical surface, and bottom is set to screw thread；Slower conical tube set
Enter lower center tube, slower conical tube inner chamber top and the cylindrical underclearance of lower shell coordinate, slower conical tube upper cone face and O-ring seal
Compress；Fastening nut and the screwed connection of lower center tube lower end；Sand cap upper end and the screwed connection of slower conical tube lower end；Sand cap is set
There is exocoel in some through hole connections；The diameter of bore of upper flow nipple is less than the diameter of bore of lower flow nipple.
The beneficial effects of the invention are as follows：(1) present invention can realize the effect of reducing pressure by regulating flow under the natural gas well；(2) this hair
It is bright to change flow nipple without salvaging flow controller when gas well yield changes, you can to realize that underground changes throttling
Hole size；(3) present invention carries out flow nipple underground replacing using well head injection pressure, simple to operate.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the initial locking state of binodal stem bar underground throttle device of the invention；
Fig. 2 is the structural representation that a kind of binodal stem bar underground throttle device of the invention delivers completion status；
Fig. 3 is structural representation when flow nipple works under a kind of binodal stem bar underground throttle device of the invention；
Fig. 4 is structural representation when flow nipple works on a kind of binodal stem bar underground throttle device of the invention；
In figure：1. deliver head, 2. end caps, 3. deliver cut off, 4. upper center tubes, 5. spring a, 6. outer barrels, 7. spacer pins, 8.
Steel ball, 9. collars, 10. spring b, 11. mandrels, flow nipple on 12,13. pressure caps, 14. fishing heads, 15. spring c, 16. slips,
17. lower shell, 18. times flow nipples, 19. spring d, 20. upper conical-tubes, 21. O-ring seals, 22. lower center tubes, 23. slower conical tubes,
24. hole, 42. steam vent a, 61. steam vent b are entered to press in fastening nut, 25. sand caps, 41..
Embodiment
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of binodal stem bar underground throttle device of the invention, is by delivering first 1, end cap
2nd, deliver and cut off 3, upper center tube 4, spring a5, outer barrel 6, spacer pin 7, steel ball 8, the collar 9, spring b10, mandrel 11, upper throttling
Mouth 12, pressure cap 13, fishing head 14, spring c15, slips 16, lower shell 17, lower flow nipple 18, spring d19, upper conical-tube 20, sealing
Cushion rubber 21, lower center tube 22, slower conical tube 23, fastening nut 24 and sand cap 25 are constituted；Its architectural feature is：Deliver first 1 and upper
Portion's launched pipeline screwed connection, delivers first 1 bottom and the top of outer barrel 6 cuts off 3 connections with dispensing；The top of mandrel 11 is set to silk
Button, the cylindrical middle part of mandrel 11, which is set, sets one to enclose groove below a step, step, the endoporus bottom of mandrel 11 sets a stepped hole,
Stepped hole aperture is set to screw thread；Upper flow nipple 12 is inserted in the lower step hole of mandrel 11, pressure cap 13 and the stepped hole of mandrel 11
Aperture screw thread connection, spring a5 is arranged on the cylindrical middle bench of mandrel 11；The endoporus bottom of upper center tube 4 sets one
Rank, circumferential be uniformly arranged below three through holes, through hole in the middle part of upper center tube 4 is provided with steam vent a42, and the top of upper center tube 4 is set
Put one and enter to press hole 41；Spring c15 is arranged on the step of the endoporus bottom of upper center tube 4, mandrel 11, upper flow nipple 12, pressure cap
13 and spring a5 integrally inserts the inner chamber of upper center tube 4；End cap 2 and the top screwed connection of upper center tube 4, the lower end of end cap 2 compress bullet
Spring a5；The endoporus top of lower center tube 22 is set to stepped hole, and stepped hole aperture is set to screw thread, and the cylindrical top of lower center tube 22 is set
Put a step；Lower flow nipple 18 is inserted in the stepped hole on the endoporus top of lower center tube 22, the upper end of lower center tube 22 and upper center tube 4
Lower end screwed connection, spring d19 is arranged on the cylindrical step of lower center tube 22；The endoporus top of the collar 9 sets one to enclose groove, three
Steel ball 8 is arranged in three through holes in the middle part of upper center tube 4, and the diameter of steel ball 8 is more than the wall thickness of upper center tube 4, and the collar 9 is enclosed on center
Outside pipe 4, the part of steel ball 8 is absorbed in the groove of the endoporus of the collar 9；Set circumferential above a step, step in the middle part of the endoporus of outer barrel 6
It is uniformly arranged below two pin-and-holes, step and is provided with steam vent b61；Spring b10 is arranged on the step in the middle part of the endoporus of outer barrel 6；
Upper center tube 4, mandrel 11, steel ball 8 and the entirety of the collar 9 insert the inner chamber of outer barrel 6, and two spacer pins 7 are arranged on upper center tube 4 two
In pin-and-hole；The inner chamber bottom of fishing head 14 is set to stepped hole, and the cylindrical top of fishing head 14 sets one to enclose groove, the bottom of fishing head 14
Circumferentially it is uniformly arranged three rectangular through-holes；The upper end extrados of slips 16 is set to rectangular preiection hook, the lower end extrados of slips 16
It is set to zigzag；The rectangular preiection hook of three upper ends of slips 16 is separately mounted to fishing head 14 bottom three rectangular through-hole
Interior, fishing head 14 and three entirety of slips 16 are enclosed on outside outer barrel 6；The inner chamber lower end of lower shell 17 sets the raised inner edge of a circle, under
The cylindrical middle part of cylinder 17 is set to screw thread；The upper end of lower shell 17 and the lower end screwed connection of outer barrel 6, the inner chamber lower end of lower shell 17 it is convex
Play inner edge holddown spring d19；The inner chamber top of upper conical-tube 20 is set to screw thread, and the cylindrical top of upper conical-tube 20 is set to circular conical surface, outside
Circle bottom is set to step；The top of upper conical-tube 20 and the middle part screwed connection of lower shell 17, O-ring seal 21 are arranged on upper conical-tube 20
In lower step；One raised step is set in the middle part of the inner chamber of slower conical tube 20, and the cylindrical top of lower shell 17 is set to circular conical surface, and bottom is set
It is set to screw thread；Slower conical tube 23 is inserted in lower center tube 22, and the inner chamber top of slower conical tube 23 and the cylindrical underclearance of lower shell 17 coordinate, under
The upper cone face of cone cylinder 23 and O-ring seal 21 are compressed；Fastening nut 24 and the lower end screwed connection of lower center tube 22；Sand cap 25
Upper end and the lower end screwed connection of slower conical tube 23；Sand cap 25 is provided with exocoel in some through hole connections；The endoporus of upper flow nipple 12
Diameter is less than the diameter of bore of lower flow nipple 18.
A kind of operation principle of binodal stem bar underground throttle device of the present invention is：Tripping in is of the invention to design attitude in oil pipe,
Launched pipeline is above put forward, slips 16 is radially expanded in the presence of upper conical-tube 20, slips 16 and tube inner wall clamping are initial locking complete
Into as shown in Figure 1；Power is lifted in increase, dispensing cuts off 3 and cut, in the presence of spring d19, upper center tube 4, lower center
Pipe 22 and the entirety of slower conical tube 23 are moved up, and cartridge 21 is radially expanded in the presence of slower conical tube 23, cartridge 21 and oil pipe
Inwall is adjacent to, and realizes the sealing in oil pipe, and now the present invention is delivered successfully, as shown in Figure 2；In the case where well head is closed, well
Interior pressure stability, gas does not flow, and mandrel 11 is under spring a5, spring c15 and self gravitation force action in flat
Weigh position state, and at this moment venthole a42 and venthole b61 is by the closed front of mandrel 11, as shown in Fig. 2 opening well head, gas occurs
Flowing, mandrel 11 gas flow resistance promotion lower axle to moving up, venthole a42 and venthole b61 are opened, natural gas lead to
The reducing pressure by regulating flow effect for crossing down flow nipple 18 discharges from venthole a42 and venthole b61, as shown in Figure 3；Close well head, mandrel
11 move down, and state of the invention from well head as shown in Fig. 2 inject pressure fluid into oil pipe, and pressure fluid produces section by mandrel 11
Pressure drop is flowed, top high-pressure fluid promotes the axle of mandrel 11 from the annular compartment for entering to press hole 41 to enter between mandrel 11 and upper center tube 4
To moving down, the part of steel ball 8 is rolled into the groove at the cylindrical middle part of mandrel 11, and the collar 9 is axially moved up in the presence of spring b10, core
The position of axle 11 is locked, and stops injection pressure fluid, state of the invention is as shown in figure 4, open well head, and gas passes through lower flow nipple
18, then pass through from upper flow nipple 12, the reducing pressure by regulating flow effect of flow nipple 12 in realization.
Claims (2)
1. a kind of binodal stem bar underground throttle device, is to cut off (3), upper center tube (4), bullet by dispensing head (1), end cap (2), dispensing
Spring a (5), outer barrel (6), spacer pin (7), steel ball (8), the collar (9), spring b (10), mandrel (11), upper flow nipple (12), pressure cap
(13), fishing head (14), spring c (15), slips (16), lower shell (17), lower flow nipple (18), spring d (19), upper conical-tube
(20), O-ring seal (21), lower center tube (22), slower conical tube (23), fastening nut (24) and sand cap (25) are constituted；Its feature
It is：Head (1) and top launched pipeline screwed connection are delivered, head (1) bottom is delivered and outer barrel (6) top is cut off (3) with dispensing
Connection；Mandrel (11) top is set to screw thread, and the cylindrical middle part of mandrel (11), which is set, sets one to enclose groove below a step, step,
Mandrel (11) endoporus bottom sets a stepped hole, and stepped hole aperture is set to screw thread；Upper flow nipple (12) is inserted under mandrel (11)
In portion's stepped hole, the aperture screw thread connection of pressure cap (13) and mandrel (11) stepped hole, spring a (5) is arranged on mandrel (11)
On cylindrical middle bench；Upper center tube (4) endoporus bottom sets and is circumferentially uniformly arranged three in the middle part of a step, upper center tube (4)
Steam vent a (42) is provided with below through hole, through hole, upper center tube (4) top sets one and enters to press hole (41)；Spring c (15) pacifies
On the step of upper center tube (4) endoporus bottom, mandrel (11), upper flow nipple (12), pressure cap (13) and spring a (5) are overall
Insert upper center tube (4) inner chamber；End cap (2) and upper center tube (4) top screwed connection, end cap (2) lower end holddown spring a (5)；
Lower center tube (22) endoporus top is set to stepped hole, and stepped hole aperture is set to screw thread, and lower center tube (22) cylindrical top is set
Put a step；Lower flow nipple (18) is inserted in the stepped hole on lower center tube (22) endoporus top, lower center tube (22) upper end and upper
Central tube (4) lower end screwed connection, spring d (19) is arranged on lower center tube (22) cylindrical step；The collar (9) endoporus top is set
A circle groove is put, three steel balls (8) are arranged in the middle part of upper center tube (4) in three through holes, and steel ball (8) diameter is more than upper center tube
(4) wall thickness, the collar (9) is enclosed on upper center tube (4) outside, and steel ball (8) part is absorbed in the groove of the collar (9) endoporus；Outer barrel
(6) circumferential be uniformly arranged below two pin-and-holes, step above a step, step is set to be provided with steam vent b (61) in the middle part of endoporus；
Spring b (10) is arranged on the step in the middle part of outer barrel (6) endoporus；Upper center tube (4), mandrel (11), steel ball (8) and the collar (9)
Entirety inserts outer barrel (6) inner chamber, and two spacer pins (7) are arranged in (4) two pin-and-holes of upper center tube；Under fishing head (14) inner chamber
Portion is set to stepped hole, and the cylindrical top of fishing head (14) sets one to enclose groove, and fishing head (14) bottom is circumferentially uniformly arranged three
Rectangular through-hole；Slips (16) upper end extrados is set to rectangular preiection hook, and slips (16) lower end extrados is set to zigzag；
The rectangular preiection hook of three slips (16) upper ends is separately mounted in the rectangular through-hole of fishing head (14) bottom three, fishing head
(14) integrally it is enclosed on outside outer barrel (6) with three slips (16)；Lower shell (17) inner chamber lower end sets the raised inner edge of a circle, lower cylinder
Body (17) cylindrical middle part is set to screw thread；Under lower shell (17) upper end and outer barrel (6) lower end screwed connection, lower shell (17) inner chamber
The raised inner edge holddown spring d (19) at end；Upper conical-tube (20) inner chamber top is set to screw thread, and the cylindrical top of upper conical-tube (20) is set
For circular conical surface, cylindrical bottom is set to step；Screwed connection in the middle part of upper conical-tube (20) top and lower shell (17), O-ring seal
(21) it is arranged in upper conical-tube (20) lower step；One raised step is set in the middle part of slower conical tube (20) inner chamber, and lower shell (17) is outside
Circle top is set to circular conical surface, and bottom is set to screw thread；Slower conical tube (23) is inserted on lower center tube (22), slower conical tube (23) inner chamber
Portion and the cylindrical underclearance of lower shell (17) coordinate, and slower conical tube (23) upper cone face and O-ring seal (21) are compressed；Fasten spiral shell
Cap (24) and lower center tube (22) lower end screwed connection；Sand cap (25) upper end and slower conical tube (23) lower end screwed connection；Sand control
Cover (25) is provided with exocoel in some through hole connections.
2. binodal stem bar underground throttle device according to claim 1, it is characterized in that：The endoporus of the upper flow nipple (12) is straight
Footpath is less than the diameter of bore of lower flow nipple (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510613299.2A CN105201464B (en) | 2015-09-24 | 2015-09-24 | A kind of binodal stem bar underground throttle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510613299.2A CN105201464B (en) | 2015-09-24 | 2015-09-24 | A kind of binodal stem bar underground throttle device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105201464A CN105201464A (en) | 2015-12-30 |
| CN105201464B true CN105201464B (en) | 2017-08-11 |
Family
ID=54949377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510613299.2A Expired - Fee Related CN105201464B (en) | 2015-09-24 | 2015-09-24 | A kind of binodal stem bar underground throttle device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105201464B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111502611A (en) * | 2020-04-07 | 2020-08-07 | 大庆油田有限责任公司 | Mechanical gas well adjustable choke and adjusting method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113863880B (en) * | 2021-10-13 | 2023-06-16 | 西南石油大学 | Repeated throwing device for underground instrument |
| CN114542025B (en) | 2022-03-16 | 2023-03-31 | 四川大学 | Three-stage adjustable throttling and pressure measuring preset underground throttle |
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| CN101949281A (en) * | 2010-09-21 | 2011-01-19 | 中国石油天然气股份有限公司 | Underground throttle |
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| CN201802372U (en) * | 2010-09-21 | 2011-04-20 | 中国石油天然气股份有限公司 | Underground throttle |
| CN202170789U (en) * | 2011-07-15 | 2012-03-21 | 中国石油天然气集团公司 | Sliding sleeve adaptor |
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2015
- 2015-09-24 CN CN201510613299.2A patent/CN105201464B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2249669C1 (en) * | 2003-08-14 | 2005-04-10 | Общество с ограниченной ответственностью "ЛУКОЙЛ-ПЕРМЬ" | Two-packer device |
| US7311149B2 (en) * | 2003-11-04 | 2007-12-25 | Evans Robert W | Jar with adjustable preload |
| RU2307911C1 (en) * | 2006-04-28 | 2007-10-10 | Институт горного дела Сибирского отделения Российской академии наук | Immersible hydraulic hammer |
| CN101949281A (en) * | 2010-09-21 | 2011-01-19 | 中国石油天然气股份有限公司 | Underground throttle |
| CN101967966A (en) * | 2010-09-21 | 2011-02-09 | 中国石油天然气股份有限公司 | Sand-burying-proof throwing-dragging single rubber barrel downhole choke |
| CN201802372U (en) * | 2010-09-21 | 2011-04-20 | 中国石油天然气股份有限公司 | Underground throttle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111502611A (en) * | 2020-04-07 | 2020-08-07 | 大庆油田有限责任公司 | Mechanical gas well adjustable choke and adjusting method |
| CN111502611B (en) * | 2020-04-07 | 2022-04-26 | 大庆油田有限责任公司 | Mechanical gas well adjustable choke and adjusting method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105201464A (en) | 2015-12-30 |
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Granted publication date: 20170811 Termination date: 20180924 |