CN204002734U - A kind of pneumatic setting restriction choke - Google Patents
A kind of pneumatic setting restriction choke Download PDFInfo
- Publication number
- CN204002734U CN204002734U CN201420264682.2U CN201420264682U CN204002734U CN 204002734 U CN204002734 U CN 204002734U CN 201420264682 U CN201420264682 U CN 201420264682U CN 204002734 U CN204002734 U CN 204002734U
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- China
- Prior art keywords
- ring
- spacer shell
- center tube
- screwed connection
- upper center
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of pneumatic setting restriction choke, between delivery device and restriction choke, with lock dog, be connected, between spacer shell and linkage section, with lock dog, be connected.A kind of pneumatic setting restriction choke that the utility model provides, locking device difficulty of processing is little, release phenomenon when lock dog locking can not seal; When restriction choke is salvaged at need, valve seat and sand cap and valve connecting overall can be squeezed into shaft bottom, can not affect later stage underground work.
Description
Technical field
The utility model relates to production gas technology field, oil field, particularly a kind of special-purpose downhole choke instrument in gas exploitation course, specifically a kind of pneumatic setting restriction choke.
Background technology
Downhole choke technology is to rely on downhole choke device to realize pit shaft reducing pressure by regulating flow, utilize ground temperature heating, make after throttling well head gas flow temperature substantially return to temperature before throttling, thereby be conducive to solve many technical barriers that in gas well manufacturing process, pit shaft and ground exist.
Downhole choke technology is formed by the gas hydrates that prevent of commonly using in the application of Soviet Union's Sulige gas field, and ground flow has been optimized in the pressure, the simplification that are extended to reduction well head and surface gathering system, becomes the key technology of Soviet Union's Sulige gas field economical and effective exploitation.
" lock tube " difficulty of processing using in the downhole choke device that patent " anti-fall single packing element downhole choke device " (201220338296.4) provides is large, and " lock tube " unstable properties situation of causing " packing element " cannot seal in down-hole.
Therefore, prior art needs to be improved.
Utility model content
Accessory difficulty of processing that the utility model overcomes " anti-fall single packing element downhole choke device " is large, seal difficult shortcoming, designs that a kind of difficulty of processing is little, the pneumatic setting restriction choke of good seal.
For solving the problems of the technologies described above, a kind of pneumatic setting restriction choke that the utility model embodiment provides, adopts following technical scheme:
A kind of pneumatic setting restriction choke, comprise slips, baffle ring, spacer shell, cone seat, shear pin, lock ring, copper packing, valve, pressure cap, sand cap, pressure ring and guide head, described slips hangs in the slips hole of fishing neck and through upper center tube, described baffle ring and upper center tube screwed connection, described slips hoop and described upper center tube lock with screw, described linkage section is put into upper bush, described spacer shell and upper bush screwed connection, and lock dog is put into the groove of linkage section and spacer shell, described cone seat is through the upper center tube connecting above, semicircular ring is put into upper center tube groove, then cone seat and spacer shell screwed connection, lock dog is put into locking grooving, dispenser penetrates locking cover, by its whole upper center tube inserting to assemble, lock dog is entered in linkage section groove, connector is connected with locking threading, described shear pin connects dispenser and connector, successively by lower sleeve, packing element, spacer ring through piston rod and with the linkage section screwed connection connecting above, described spacer shell and lower sleeve screwed connection, described lock ring is put into piston rod chamber, and piston is passed wherein, described copper packing, valve is put into valve seat chamber successively, described pressure cap and sand cap all with the screwed connection of valve seat, and its integral body is put into plunger shaft inner bottom part, described shear pin fixed piston and valve seat, described pressure ring and guide head are successively through piston, described guide head and spacer shell screwed connection, it is characterized in that, between described spacer shell and linkage section, with lock dog, be connected.
Particularly, described valve seat and sand cap and valve connecting overall can be squeezed into shaft bottom.
A kind of pneumatic setting restriction choke that the utility model provides, locking device difficulty of processing is little, release phenomenon when lock dog locking can not seal; When restriction choke is salvaged at need, valve seat and sand cap and valve connecting overall can be squeezed into shaft bottom, can not affect later stage underground work.
Accompanying drawing explanation
Fig. 1 is the pneumatic setting restriction choke the first half schematic diagram described in the utility model embodiment.
Fig. 2 is the pneumatic setting restriction choke the latter half schematic diagram described in the utility model embodiment.
Reference numeral: dispenser 1, shear pin 2, connector 3, baffle ring 4, upper center tube 5, locking cover 6, fishing neck 7, slips 8, screw 9, slips hoop 10, shear pin 11, cone seat 12, semicircular ring 13, lock dog 14, spacer shell 15, linkage section 16, lock dog 17, upper bush 18, packing element 19, spacer ring 20, piston rod 21, piston 22, lock ring 23, lower sleeve 24, spacer shell 25, guide head 26, pressure ring 27, shear pin 28, copper packing 29, valve 30, pressure cap 31, valve seat 32, sand cap 33.
The specific embodiment
A kind of pneumatic setting restriction choke that the utility model embodiment provides, locking device difficulty of processing is little, release phenomenon when lock dog locking can not seal; When restriction choke is salvaged at need, valve seat and sand cap and valve connecting overall can be squeezed into shaft bottom, can not affect later stage underground work.
Pneumatic setting restriction choke the utility model embodiment being offered below in conjunction with accompanying drawing is described in detail.
As shown in Figure 1, 2, a kind of pneumatic setting restriction choke that the utility model embodiment provides, comprise slips 8, baffle ring 4, spacer shell 15, cone seat 12, shear pin 11, lock ring 23, copper packing 29, valve 30, pressure cap 31, sand cap 33, pressure ring and guide head 26, slips 8 hangs in the slips hole of fishing neck 7 and through upper center tube 5, baffle ring 4 and upper center tube 5 screwed connections, slips hoop 10 and upper center tube 5 use screw 9 lockings; Linkage section 16 is put into upper bush 18, spacer shell 15 and upper bush 18 screwed connections, and lock dog 14 is put into the groove of linkage section 16 and spacer shell 15; Cone seat 12, through the upper center tube 5 connecting above, is put into upper center tube 5 grooves by semicircular ring 13, then cone seat 12 and spacer shell 15 screwed connections; Lock dog 17 is put into locking cover 6 grooves, and dispenser 1 penetrates locking cover 6, by its whole upper center tube 5 inserting to assemble, lock dog 17 is entered in linkage section 16 grooves, connector 3 and 6 screwed connections of locking cover, and shear pin 2 connects dispenser 1 and connector 3; Successively by lower sleeve 24, packing element 19, spacer ring 20 through piston rod 21 and with linkage section 16 screwed connections that connect above; Spacer shell 25 and lower sleeve 24 screwed connections, lock ring 23 is put into piston rod 21 chambeies, and piston 22 is passed wherein; Copper packing 29, valve 30 are put into valve seat 32 chambeies successively, pressure cap 31 and sand cap 33 all with 32 screwed connections of valve seat, and its integral body is put into piston 22 chamber inner bottom parts, shear pin 28 fixed pistons 22 and valve seats 32; Pressure ring 27 is with guide head 26, successively through piston 22, guide head 26 and spacer shell 25 screwed connections.
Between delivery device and restriction choke, with lock dog 17, be connected, between spacer shell 15 and linkage section 16, with lock dog 17, be connected.
Valve seat 32 can be squeezed into shaft bottom with sand cap 33 and valve 30 connecting overalls.
This practicality completes restriction choke by steel wire operation and throws in salvaging:
1, throw in
With rope tool series winding, connect the dispenser 1 of restriction choke, and this instrument is transferred to design attitude by gas production wellhead, slowly go up rope rope, make slips 8 move down also stuck in tube inner wall with respect to all parts of cone seat 12 and connection therewith; In continuation, rope rope is cut off shear pin 2, and dispenser 1 is with moving on rope tool string, and when dispenser 1 step contacts with connector 3, lock dog 17 and dispenser 1 necking down contact and skid off the lock dog groove of linkage section 16, realize throwing mechanism and move on the whole disengaging restriction choke; Under the effect of high pressure, on lower sleeve 24, move compression packing element 19 and realize and oil pipe sealing, meanwhile lower sleeve 24 drives on spacer shell 25, guide head 26, pressure ring 27, piston 22, valve seat 32, sand cap 33 etc. and moves and realize lock ring 23 and piston 22 lock functions.With rope tool, string out outside pit shaft, restriction choke sets successfully.
2, salvage
With rope tool series winding, connect blind hammer and transfer to throttle positions jarring downwards by gas production wellhead, upper center tube 5 and cone seat 12 relative slips 8 move down, restriction choke unfreezing success.
With rope tool series winding, playing dipper is transferred to throttle positions fishing socket is docked with fishing neck 7 by gas production wellhead, on carry tool string fishing neck 7 contacted with baffle ring 4, in continuation, carry tool string and cut off shear pin 11, when semicircular ring 13 touches cone seat 12, lock dog 14 is removed spacer shell 15, linkage section 16 locking actions, with moving on tool string, upper bush 18 is with respect to moving on piston rod 21, compressed packing element 19 axial distances increase, packing element 19 retractions releasing contact with oil pipe, restriction choke moves on the whole, salvages successfully.
A kind of pneumatic setting restriction choke that the utility model provides, locking device difficulty of processing is little, release phenomenon when lock dog locking can not seal; When restriction choke is salvaged at need, valve seat and sand cap and valve connecting overall can be squeezed into shaft bottom, can not affect later stage underground work.
The above; it is only the specific embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion by the described protection domain with claim.
Claims (2)
1. a pneumatic setting restriction choke, comprise slips, baffle ring, spacer shell, cone seat, shear pin, lock ring, copper packing, valve, pressure cap, sand cap, pressure ring and guide head, described slips hangs in the slips hole of fishing neck and through upper center tube, described baffle ring and upper center tube screwed connection, described slips hoop and described upper center tube lock with screw, described linkage section is put into upper bush, described spacer shell and upper bush screwed connection, and lock dog is put into the groove of linkage section and spacer shell, described cone seat is through the upper center tube connecting above, semicircular ring is put into upper center tube groove, then cone seat and spacer shell screwed connection, lock dog is put into locking grooving, dispenser penetrates locking cover, by its whole upper center tube inserting to assemble, lock dog is entered in linkage section groove, connector is connected with locking threading, described shear pin connects dispenser and connector, successively by lower sleeve, packing element, spacer ring through piston rod and with the linkage section screwed connection connecting above, described spacer shell and lower sleeve screwed connection, described lock ring is put into piston rod chamber, and piston is passed wherein, described copper packing, valve is put into valve seat chamber successively, described pressure cap and sand cap all with the screwed connection of valve seat, and its integral body is put into plunger shaft inner bottom part, described shear pin fixed piston and valve seat, described pressure ring and guide head are successively through piston, described guide head and spacer shell screwed connection, it is characterized in that, between described spacer shell and linkage section, with lock dog, be connected.
2. pneumatic setting restriction choke according to claim 1, is characterized in that, described valve seat and sand cap and valve connecting overall can be squeezed into shaft bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420264682.2U CN204002734U (en) | 2014-05-23 | 2014-05-23 | A kind of pneumatic setting restriction choke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420264682.2U CN204002734U (en) | 2014-05-23 | 2014-05-23 | A kind of pneumatic setting restriction choke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204002734U true CN204002734U (en) | 2014-12-10 |
Family
ID=52042754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420264682.2U Expired - Fee Related CN204002734U (en) | 2014-05-23 | 2014-05-23 | A kind of pneumatic setting restriction choke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204002734U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089581A (en) * | 2014-05-14 | 2015-11-25 | 中国石油天然气股份有限公司 | Downhole flow control device for large-tube-diameter gas well and process method |
| CN105221095A (en) * | 2015-11-03 | 2016-01-06 | 江苏省金峰石油机械制造有限公司 | Gas well blocking device |
| CN109403929A (en) * | 2018-10-23 | 2019-03-01 | 中国石油天然气股份有限公司 | A kind of waterpower pumped type underground throttle device and application method |
| CN114776267A (en) * | 2022-05-03 | 2022-07-22 | 四川大学 | Separated underground throttler capable of being seated for multiple times |
-
2014
- 2014-05-23 CN CN201420264682.2U patent/CN204002734U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089581A (en) * | 2014-05-14 | 2015-11-25 | 中国石油天然气股份有限公司 | Downhole flow control device for large-tube-diameter gas well and process method |
| CN105089581B (en) * | 2014-05-14 | 2018-08-14 | 中国石油天然气股份有限公司 | A kind of Large Diameter Pipeline gas well well flow rate controller and process |
| CN105221095A (en) * | 2015-11-03 | 2016-01-06 | 江苏省金峰石油机械制造有限公司 | Gas well blocking device |
| CN109403929A (en) * | 2018-10-23 | 2019-03-01 | 中国石油天然气股份有限公司 | A kind of waterpower pumped type underground throttle device and application method |
| CN109403929B (en) * | 2018-10-23 | 2023-09-26 | 中国石油天然气股份有限公司 | Hydraulic pumping type downhole choke and use method thereof |
| CN114776267A (en) * | 2022-05-03 | 2022-07-22 | 四川大学 | Separated underground throttler capable of being seated for multiple times |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20170523 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |