CN201802372U - Underground throttle - Google Patents
Underground throttle Download PDFInfo
- Publication number
- CN201802372U CN201802372U CN2010205423531U CN201020542353U CN201802372U CN 201802372 U CN201802372 U CN 201802372U CN 2010205423531 U CN2010205423531 U CN 2010205423531U CN 201020542353 U CN201020542353 U CN 201020542353U CN 201802372 U CN201802372 U CN 201802372U
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- valve pipe
- cone
- slips
- sliding sleeve
- centre bore
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Abstract
The utility model relates to an underground throttle, which is applied in the technical field of gas production in an oil and gas field. An outer wall of a sliding sleeve is sleeved with a fishing head, a slip is hung at the lower end of the fishing head, and the outer wall at the lower end of the sliding sleeve is in threaded connection with a slip cone; and an upper air tap tube is fixed in the sliding sleeve by a pin. The clip cone is provided with a central hole, a lower air tap tube is arranged in the central hole of the slip cone, the lower end of the lower air tap tube is provided with a spring, the lower end of the spring is provided with an annular spring seat, and the lower end of a stepped central hole of the lower air tap tube is embedded with an air tap. A sealing packer rubber is fixed at the lower end of the slip cone; the lower part of the sealing packer rubber is provided with a packer rubber cone, and the lower end of the packer rubber cone is connected with a protective cover; and the lower end of the lower air tap tube is in threaded connection with a filtering hood. The utility model has the effects that one sealing packer rubber and one packer rubber cone are adopted to make a seat seal more reliable; the position of a sealing ring is adjusted and a spline structure and a disassembly torsion ring are adopted to reduce damage to the sealing ring and prolong the service life of the sealing ring; and the damage of sand flow to the throttle is reduced.
Description
Technical field
The utility model relates to oil gas field production gas technology field, and particularly a kind of underground throttle device that the control gas production is produced in the natural gas well is a kind of underground throttle device that is applicable to the oil gas well use with blowing ability.
Background technology
At present, underground throttle device is applied in the natural gas well that carries out gas production control.Chinese patent publication number CN2471929Y provides a kind of " downhole choke valve and throttling valve fishing tool thereof ".Comprise packing element, seat envelope instrument, central tube, valve cover, fishing head, slips, baffle ring, ceramic valve, piston rod, spring, spring base, upper skeleton packing element, packing element sliding sleeve, lower skeleton packing element, lower piston, cone, sand control inner cover and sand control outer cover.Need special-purpose fishing tool to salvage.Can realize natural gas well step-down throttling gas production, reach pressure, the output of control output oil gas; Downhole choke valve fishing tool can be finished the task of salvaging, deblocking and release in the steel wire working range.Wherein adopted by three slips, " outside is that pawl shape, internal diameter are that the conical surface, middle part are inner conical surface " of three slips, " slips is buckled in respectively in three keyways on central tube top, and baffle ring is threaded with central tube top, and slips can slide up and down along the central tube keyway ".Chinese patent publication number CN201437717U provides a kind of " down-hole sand control restriction choke ".Mainly form by top connection, last seating nipple and following seating nipple.Following seating nipple middle part outer wall thread is connected with the filter sand assembly; The following seating nipple lower end sand setting assembly that is threaded, sand setting assembly are mainly by sand sediment pipe and stifled composition of the end.Filter sand assembly mount pad centre bore and following seating nipple bulkhead through-hole UNICOM are fixed with obstruction throttling assembly on mount pad.Solve gas well throttling valve and dragged for a problem of top sand setting, improved the pulling success rate." drilling technology " is assorted, the 31st volume, and the 4th phase, publication has " novel underground throttle device is developed and used ".Novel underground throttle device comprises give up head (input joint), body, fishing head, slips, center-pole, brambles tooth, cartridge and pusher head.The article main contents comprise the technical indicator and the structure of restriction choke, and the slips structure that those skilled in the art are used always describes with slips is stressed to be analyzed.
At present, the restriction choke of control gas production has a variety of, the structure difference.Existing slip-type underground throttle device adopts two packing elements, and is bad easily; Sealing ring is many and the use location is improper, after the sealing ring breakage, forms the sand card, causes mechanical breakdown to rise and goes wrong, and causes restriction choke to lose efficacy easily or the big deficiency of salvaging difficulty; In addition, traditional slip-type underground throttle device does not have sand control mechanism, can not effectively prevent and treat the problem that gas well shakes out.
Summary of the invention
The purpose of this utility model is: provide a kind of underground throttle device, simplified structure; Adjust the position of sealing ring, prolong the application life of sealing ring; Adopt classification sand control, make the assembling restriction choke more convenient, throttling is reliable, satisfies the requirement of gas well ordinary production.
The technical solution adopted in the utility model is: underground throttle device, mainly form by fishing head, pin, sliding sleeve, last valve pipe, slips, slips baffle ring, following valve pipe, slips cone, spring, valve, cartridge, spring base, packing element cone, filter mantle and protective cover, sliding sleeve is a cylindrical shape, be with fishing head on the outer wall of sliding sleeve, the ring-shaped step that protrusion is arranged on the outer wall of fishing head lower end, be symmetrically distributed with two grooves on the ring-shaped step, the upper end of two slips is in groove, and slips is suspended on the ring-shaped step; Be with an annular snap eaves tile ring at two slips; Sliding sleeve lower end outer wall has screw thread, is connected with a slips cone at sliding sleeve lower end outer wall thread; Under the drive of fishing head, can slide on the taper seat of slips cone in the lower end of two slips.In sliding sleeve, have cylindrical on the valve pipe, last valve pipe 4 has centre bore, in the upper end pin hole of last valve pipe pin is arranged, the two ends of pin are fixed in the pin hole of sliding sleeve 3, will go up the valve pipe by pin and be fixed in the sliding sleeve.It is characterized in that:
The slips cone has centre bore, and the diameter of slips cone centre bore is greater than sliding sleeve centre bore 2～20mm; Following valve pipe is arranged in the centre bore of slips cone, and following valve pipe is the stairstepping cylinder, and following valve pipe has centre bore; Following valve pipe upper end cylinder diameter is identical with the diameter of slips cone centre bore, and following valve pipe upper end cylinder physical efficiency is slided in slips cone centre bore.Form annular space between following valve pipe lower end cylinder outer wall and the slips cone center bore inner wall, spring is arranged in annular space, there is the annular spring base lower end of spring, spring socket sleeve is on the cylinder outer wall of following valve pipe lower end, the spring base sidewall has external screw thread, and spring base is connected in the centre bore of slips cone lower end by external screw thread.There is the stepped central hole following valve pipe upper end, be embedded with a valve in following bottom, valve pipe stepped central hole, on the valve pipe stepped central hole internal thread is being arranged down, last valve pipe lower end is threaded in down the upper end of valve pipe, and between last valve pipe lower surface and the valve upper surface 0 RunddichtringO is arranged.
Fix a cartridge in lower end die casting of slips cone or sulfuration, cartridge lower end inwall has taper seat, and the internal conical surface larger diameter end of cartridge is in the bottom;
In the bottom of cartridge and be with a packing element cone on the outer wall of slips cone, the lower end screw thread of packing element cone is connected with protective cover; Following valve pipe passes packing element cone centre bore, is connected with filter mantle at the lower end screw thread that descends the valve pipe, is evenly distributed with filter bores on the wall of filter mantle, and is porose on the protective cover wall.Filter mantle is in protective cover.
Described packing element cone is made up of the cone on top and the cylinder of bottom, and centre bore is arranged on cylinder, and following valve pipe lower end external diameter is identical with cylindrical centre bore, and cylindrical centre bore can be passed in the lower end of following valve pipe; Centre bore is arranged on cone, and slips cone lower end external diameter is identical with the centre bore internal diameter of cone, can slide in the centre bore of cone in slips cone lower end.
Valve pipe under the unloading for convenience is processed with a transverse groove in the lower surface of following valve pipe.
On the cylinder outer wall of valve pipe upper end the two seals circle being arranged down, prevent that down-hole sand from passing through from the gap between slips cone and the following valve pipe.
Between the upper end of spring and cylinder lower surface, following valve pipe upper end, unload torsion circle, unload torsion circle and adopt plane bearing.
Twist when preventing that the valve pipe from sliding in sliding sleeve, adopt spline to be connected between last valve pipe lower end and the sliding sleeve.
The operating principle and the use of summary underground throttle device.Consult Fig. 1.
Operating principle: underground throttle device has last valve pipe 4 and following valve pipe 7, and last valve pipe 4 and following valve pipe 7 are by being threaded togather; There is a sliding sleeve 3 last valve pipe 4 outsides, and fishing head 1 drives two slips 5, can slide up and down along sliding sleeve 3 outer walls.The lower end outer wall of slips 5 has hangnail, and slips 5 to lower slider, opens slips 5 and hangs on the tube inner wall on slips cone 8 external surfaces; A cartridge 11 is fixed in slips cone 8 lower ends.After pin 2 is broken by wire rope, spring 9 promotes to go up valve pipe 4, following valve pipe 7 and packing element cone 13 and moves up, and packing element cone 13 wedging cartridge 11 lower end endoporus expand cartridge 11, cartridge 11 is combined closely with tube inner wall, reaches the purpose of sealing.Slips baffle ring 6 prevents that slips 5 from coming off, the elastic force of spring base 12 energy regulating springs 9.
Use: when needs are thrown in restriction choke toward the down-hole, at first steel wire and pin 2 are tied, utilize test carriage, well head lubricator and wire rope with under the movable underground throttle device after desired depth, carry wire rope slowly, fishing head 1 and slips 5 under action of gravity to slip, slips 5 opens, and is supportting tube inner wall, and whole restriction choke is suspended in the oil pipe.And then carry wire rope firmly, when upper lifting force reaches 2500～3000N, pin 2 is cut off; After pin 2 was cut off, spring 9 discharged compression elasticity; Spring 9 will be gone up on valve pipe 4, following valve pipe 7 and the packing element cone 13 and push away; Packing element cone 13 struts cartridge 11, and underground throttle device is thrown in, the work of seat envelope is finished.When the gas production that drives a well was produced, natural gas via filter mantle 14 entered down valve pipe 7 centre bores in the well, carries out the throttling step-down during again by valve 10, realized downhole choke.When needs are adjusted the throttling antihypertensive effect and are changed the valve 10 of different inner diameters, utilize test carriage to be lowered to fishing tool, on carry the chucking that fishing head 1 is removed 5 pairs of tube inner walls of slips; On carry fishing tool underground throttle device pulled out.
The beneficial effects of the utility model: the utility model underground throttle device,, can effectively seal and be anchored on the tube inner wall the seat envelope of giving up in the oil pipe under the underground throttle device by wire rope, realize gas production step-down, throttling.Adopt a cartridge and a packing element cone to make that the seat envelope is more reliable; Adjust the position of sealing ring and also adopt spline structure and unload torsion circle, reduce infringement, prolong sealing ring application life sealing ring; Sand control mechanism is arranged, can prevent and treat the restriction choke that the destruction and the sand card that shake out to restriction choke cause and salvage difficulty; Satisfy the gas producing technology requirement in gas field.Be applicable to oil gas well with blowing ability.
Description of drawings
Fig. 1 is the utility model underground throttle device structural profile schematic diagram.
Among the figure, 1. fishing head, 2. pin, 3. sliding sleeve; 4. go up the valve pipe, 5. slips, 6. the slips baffle ring 7. descends the valve pipe; 8. slips cone, 9. spring, 10. valve; 11. cartridge, 12. spring bases, 13. packing element cones; 14. filter mantle, 15. protective covers, 16. unload torsion circle; 17. sealing ring, 18.O RunddichtringO, 19. splines.
The specific embodiment
Embodiment 1: " underground throttle device of oil pipe is an example, and the utility model is described in further detail to be applicable to 31/2 with one.
Consult Fig. 1.Underground throttle device, mainly form by fishing head 1, pin 2, sliding sleeve 3, last valve pipe 4, slips 5, slips baffle ring 6, following valve pipe 7, slips cone 8, spring 9, valve 10, cartridge 11, spring base 12, packing element cone 13, filter mantle 14 and protective cover 15, sliding sleeve 3 is a cylindrical shape, be with fishing head 1 on the outer wall of sliding sleeve 3, the ring-shaped step that protrusion is arranged on the outer wall of fishing head 1 lower end, be symmetrically distributed with two grooves on the ring-shaped step, the upper end of two slips 5 is in groove, and slips 5 is suspended on the ring-shaped step; The extrados diameter of slips 5 is 76mm, and is identical with the diameter of tube inner wall.Be with an annular snap eaves tile ring 6 at two slips 5; Sliding sleeve 3 lower end outer walls have screw thread, are connected with a slips cone 8 at sliding sleeve 3 lower end outer wall threads; Slips 5 inner arc surfaces are circular cone cambered surfaces, and the tapering of circular cone cambered surface is identical with the tapering of slips cone 8.In sliding sleeve 3, have cylindrical on valve pipe 4, adopt spline 19 to be connected between last valve pipe 4 lower ends and the sliding sleeve 3.Last valve pipe 4 has centre bore, in the upper end pin hole of last valve pipe 4 pin 2 is arranged, and the two ends of pin 2 are fixed in the pin hole of sliding sleeve 3, will go up valve pipe 4 by pin 2 and be fixed in the sliding sleeve 3.
Fix a cartridge 11 in 8 lower end die casting of slips cone or sulfuration, cartridge 11 lower end inwalls have taper seat, and the internal conical surface larger diameter end of cartridge 11 is in the bottom;
In the bottom of cartridge 11 and be with a packing element cone 13 on the outer wall of slips cone 8, the lower end screw thread of packing element cone 13 is connected with protective cover 15; Following valve pipe 7 passes packing element cone 13 centre bores, is connected with filter mantle 14 at the lower end screw thread that descends valve pipe 7, is processed with a transverse groove in the lower surface of following valve pipe 7.Be evenly distributed with filter bores on the wall of filter mantle 14, porose on protective cover 15 walls.Filter mantle 14 is in protective cover 15.
Described packing element cone 13 is made up of the cone on top and the cylinder of bottom, and centre bore is arranged on cylinder, and following valve pipe 7 lower end external diameters are identical with cylindrical centre bore; Centre bore is arranged on cone, and slips cone 8 lower end external diameters are identical with the centre bore internal diameter of cone.
Claims (6)
1. underground throttle device, mainly by fishing head (1), pin (2), sliding sleeve (3), last valve pipe (4), slips (5), slips baffle ring (6), following valve pipe (7), slips cone (8), spring (9), valve (10), cartridge (11), spring base (12), packing element cone (13), filter mantle (14) and protective cover (15) are formed, sliding sleeve (3) is a cylindrical shape, be with fishing head (1) on the outer wall of sliding sleeve (3), the ring-shaped step that protrusion is arranged on the outer wall of fishing head (1) lower end, be symmetrically distributed with two grooves on the ring-shaped step, the upper end of two slips (5) is in groove, and slips (5) is suspended on the ring-shaped step; Be with an annular snap eaves tile ring (6) at two slips (5); Sliding sleeve (3) lower end outer wall has screw thread, and outer wall thread is connected with a slips cone (8) in sliding sleeve (3) lower end; The cylindrical valve pipe (4) of going up is arranged in sliding sleeve (3), last valve pipe (4) has centre bore, pin (2) is arranged in the upper end pin hole of last valve pipe (4), and the two ends of pin (2) are fixed in the pin hole of sliding sleeve (3), will go up valve pipe (4) by pin (2) and be fixed in the sliding sleeve (3); It is characterized in that:
Slips cone (8) has centre bore, and the diameter of slips cone (8) centre bore is greater than sliding sleeve (3) centre bore 2～20mm; Following valve pipe (7) is arranged in the centre bore of slips cone (8), and following valve pipe (7) is the stairstepping cylinder, and following valve pipe (7) has centre bore; Following valve pipe (7) upper end cylinder diameter is identical with the diameter of slips cone (8) centre bore; Form annular space between following valve pipe (7) lower end cylinder outer wall and slips cone (8) center bore inner wall, spring (9) is arranged in annular space, there is annular spring base (12) lower end of spring (9), spring base (12) is enclosed within down on the cylinder outer wall of valve pipe (7) lower end, spring base (12) sidewall has external screw thread, and spring base (12) is connected in the centre bore of slips cone (8) lower end by external screw thread; There is the stepped central hole following valve pipe (7) upper end, be embedded with a valve (10) in following bottom, valve pipe (7) stepped central hole, on valve pipe (7) the stepped central hole internal thread is being arranged down, last valve pipe (4) lower end is threaded in down the upper end of valve pipe (7), and between last valve pipe (4) lower surface and valve (10) upper surface O RunddichtringO (18) is arranged;
Fix a cartridge (11) in slips cone (8) lower end die casting or sulfuration, cartridge (11) lower end inwall has taper seat, and the internal conical surface larger diameter end of cartridge (11) is in the bottom;
In the bottom of cartridge (11) and be with a packing element cone (13) on the outer wall of slips cone (8), the lower end screw thread of packing element cone (13) is connected with protective cover (15); Following valve pipe (7) passes packing element cone (13) centre bore; lower end screw thread at following valve pipe (7) is connected with filter mantle (14); be evenly distributed with filter bores on the wall of filter mantle (14), porose on protective cover (15) wall, filter mantle (14) is in protective cover (15).
2. underground throttle device according to claim 1 is characterized in that: described packing element cone (13) is made up of the cone on top and the cylinder of bottom, and centre bore is arranged on cylinder, and following valve pipe (7) lower end external diameter is identical with cylindrical centre bore; Centre bore is arranged on cone, and slips cone (8) lower end external diameter is identical with the centre bore internal diameter of cone.
3. underground throttle device according to claim 1 is characterized in that: the lower surface at following valve pipe (7) is processed with a transverse groove.
4. underground throttle device according to claim 1 is characterized in that: on the cylinder outer wall of valve pipe (7) upper end two seals circle (17) is being arranged down.
5. according to claim 1,2,3 or 4 described underground throttle devices, it is characterized in that: between the upper end of spring (9) and cylinder lower surface, following valve pipe (7) upper end, unload torsion circle (16), unload torsion circle and adopt plane bearing.
6. according to claim 1,2,3 or 4 described underground throttle devices, it is characterized in that: go up between valve pipe (4) lower end and the sliding sleeve (3) and adopt spline (19) to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205423531U CN201802372U (en) | 2010-09-21 | 2010-09-21 | Underground throttle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205423531U CN201802372U (en) | 2010-09-21 | 2010-09-21 | Underground throttle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201802372U true CN201802372U (en) | 2011-04-20 |
Family
ID=43871877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205423531U Expired - Lifetime CN201802372U (en) | 2010-09-21 | 2010-09-21 | Underground throttle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201802372U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949281A (en) * | 2010-09-21 | 2011-01-19 | 中国石油天然气股份有限公司 | Underground throttler |
| CN104373070A (en) * | 2014-11-12 | 2015-02-25 | 中国石油天然气股份有限公司 | Deblocking mechanism of large-diameter slip type throttler |
| CN104373092A (en) * | 2013-08-15 | 2015-02-25 | 中国石油天然气股份有限公司 | Underground blockage preventing flow restrictor and fishing method |
| CN105201464A (en) * | 2015-09-24 | 2015-12-30 | 西南石油大学 | Double-throttling-nozzle downhole throttling device |
-
2010
- 2010-09-21 CN CN2010205423531U patent/CN201802372U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949281A (en) * | 2010-09-21 | 2011-01-19 | 中国石油天然气股份有限公司 | Underground throttler |
| CN101949281B (en) * | 2010-09-21 | 2013-03-27 | 中国石油天然气股份有限公司 | Underground throttler |
| CN104373092A (en) * | 2013-08-15 | 2015-02-25 | 中国石油天然气股份有限公司 | Underground blockage preventing flow restrictor and fishing method |
| CN104373070A (en) * | 2014-11-12 | 2015-02-25 | 中国石油天然气股份有限公司 | Deblocking mechanism of large-diameter slip type throttler |
| CN105201464A (en) * | 2015-09-24 | 2015-12-30 | 西南石油大学 | Double-throttling-nozzle downhole throttling device |
| CN105201464B (en) * | 2015-09-24 | 2017-08-11 | 西南石油大学 | A kind of binodal stem bar underground throttle device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110420 Effective date of abandoning: 20130327 |
|
| RGAV | Abandon patent right to avoid regrant |