CN202338303U - Sand-proof type preset underground throttle with retractable air tap - Google Patents
Sand-proof type preset underground throttle with retractable air tap Download PDFInfo
- Publication number
- CN202338303U CN202338303U CN2011204307650U CN201120430765U CN202338303U CN 202338303 U CN202338303 U CN 202338303U CN 2011204307650 U CN2011204307650 U CN 2011204307650U CN 201120430765 U CN201120430765 U CN 201120430765U CN 202338303 U CN202338303 U CN 202338303U
- Authority
- CN
- China
- Prior art keywords
- sand
- lock dog
- underground throttle
- seal section
- air tap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a sand-proof type preset underground throttle with a retractable air tap, which is designed for solving the problem that the air tap of the conventional preset underground throttle is blocked in a sanding process of an air well. The sand-proof type preset underground throttle with the retractable air tap mainly comprises a locking block shaft, a locking nut, a protection sleeve, a locking block, a locking block body, a sealing section, a shear pin, the air gap, a sand-proof cover and the like. The sand-proof type preset underground throttle with the retractable air tap has a sand-proof function. Once if the air tap is blocked, the air tap retracts into the sand-proof cover, so that a channel is formed from upstream to downstream. Therefore, air flow or liquid flow is prevented from up-going in operations of a killing well, and the stepping operation of the air well can be ensured to be smoothly carried out.
Description
Technical field
The utility model relates to a kind of anti-sand mold presetting system underground throttle device of valve of destroying, and belongs to gas field development technique field.
Background technology
In natural gas extraction, for step-down, throttling, limited production, usually at the gas well pit shaft underground throttle device is installed, underground throttle device is divided into slip-type underground throttle device and presetting system underground throttle device again with seat envelope mode difference.Su Lige gas field extensive use at present be the slip-type underground throttle device, show that through large-area applying this restriction choke is difficult to be salvaged, and is prone to cause down-hole accident.Presetting system underground throttle device cartridge deflection is little, sealing reliability good, and the life-span is long, and cartridge in case be located in short circuit and break away from, its external diameter does not almost have frictional resistance just less than the pit shaft latus rectum when carrying in the salvaging.But its valve of presetting system underground throttle device directly contacts with upper reaches source of the gas, in case gas well shakes out, valve is blocked easily.
Summary of the invention
The purpose of the utility model is to provide a kind of anti-sand mold presetting system underground throttle device of valve of destroying, and it can overcome the shortcoming that existing presetting system underground throttle device causes valve to be blocked when gas well shakes out, destroy valve, so that form the upstream and downstream passage.
The concrete technology contents of the utility model is following:
Lock nut and protective jacket are placed in lock dog body top, and the upper and lower part respectively has the lock dog axle of a necking segment to be inserted in the lock dog body that is provided with inner surface recesses, is provided with locating ring in the lock dog axle outer surface groove, is provided with baffle ring between lock dog axle external surface convex shoulder and the lock nut; Spring leaf one end is positioned at protective jacket, and the other end is positioned at lock dog; Connect the last seal section that is with sealing ring in the hole, lock dog body bottom, connect in the hole, last seal section bottom, connect valve and pressure cap in the hole, lower seal section bottom by the fixing lower seal section of shear pin; Sand cap is threaded with last seal section.
The advantage of the utility model is: instrument has the sand control function, in case and valve be blocked, can hit in the sand cap under the valve so that upstream and downstream forms passage, gas-liquid flow can't be up when avoiding kill job, guarantee gas well down the step operation carries out smoothly.
Description of drawings
Accompanying drawing 1 is for destroying the structural representation in anti-sand mold presetting system underground throttle device input of valve and the salvaging process.
Structural representation when accompanying drawing 2 seals for destroying the anti-sand mold presetting system underground throttle device seat of valve.
Accompanying drawing 3 is for destroying the anti-sand mold presetting system underground throttle device lock dog structural representation of valve.
The specific embodiment
Embodiment:
Embodiment with reference to 1 to 3 pair of the utility model of accompanying drawing further specifies:
During assembling, will connect valve 13 earlier and be threadedly connected in the hole, lower seal section 11 bottom, lower seal section 11 will be fixed in the hole, seal section 10 bottom, again sand cap 15 will be threaded with last seal section 10 with shear pin 12 with pressure cap 14; V-shaped seal ring 9 is enclosed within seal section 10 outsides, and connects in hole, lock dog body 8 bottom with pin; Locating ring 4 is put in lock dog axles 1 groove, with pack into lock nut 2 and be placed in lock dog body 8 tops of baffle ring 3, protective jacket 5, spring leaf 6 and lock dog 7 are installed again, at last lock dog axle 1 is injected in the lock dog body 8.
Each stage course of work of the utility model is following:
1. throw in and the seat envelope
Insert in the presetting system underground throttle device with special use input instrument before throwing in and use dowel fixes.During input; Connect special-purpose input instrument and render to the seating nipple of assigned address with steel wire; When V-shaped seal ring 9 closely contacts with the seating nipple seal section and because barrier effect downward jarring can not move down the time, at this moment, owing to push away effect under the special-purpose input instrument; Lock dog axle 1 is moved down with respect to lock dog body 8, and lock dog 7 is pushed in the seating nipple groove by lock dog axle 1.Because lock dog 7 is stuck with the seating nipple inside groove, upwards the pin of special-purpose input instrument and presetting system underground throttle device is cut off in jarring, accomplishes and throws in and the seat envelope.Because locating ring 4 snaps in the inner surface recesses of lock dog body 8, so lock dog axle 1 moves on can be with air-flow.
2, salvage
Connect special-purpose fishing tool with steel wire and be lowered into the presetting system throttle positions; Carry in the time of in special-purpose fishing tool stretches into lock dog axle 1 chamber; Lock dog axle 1 is with respect to moving on the lock dog body 8 at this moment, because spring leaf 6 compression lock dogs 7 make it get back to lock dog axle 1 bottleneck, lock dog 7 place's external diameters are less than the seating nipple internal diameter; Lock dog body 8 is salvaged successfully with moving on the lock dog axle 1.Because the effect of baffle ring 3, on when carrying lock dog body 8 can not separate with lock dog axle 1.
3, destroy valve
When valve 13 sand plugs; Be lowered into the presetting system throttle positions to hit instrument under the steel wire connection special use; And hit under stretching in its chamber, shear pin 12 is cut off, and valve 13, pressure cap 14 are fallen in sand cap 15 chambeies together with lower seal section 11; Gas (liquid) stream will pass sand cap 15 slots and presetting system restriction choke inner chamber flows to downstream, and valve 13 is destroyed successfully.
Claims (1)
1. destroy the anti-sand mold presetting system underground throttle device of valve for one kind, it is characterized in that:
Lock nut (2) and protective jacket (5) are placed in lock dog body (8) top; The upper and lower part respectively has the lock dog axle (1) of a necking segment to be inserted in the lock dog body (8) that is provided with inner surface recesses; Be provided with locating ring (4) in lock dog axle (1) outer surface groove, be provided with baffle ring (3) between lock dog axle (1) external surface convex shoulder and the lock nut (2); Spring leaf (6) one ends are positioned at protective jacket (5), and the other end is positioned at lock dog (7); Connect the last seal section (10) that is with sealing ring (9) in lock dog body (8) hole, bottom, connect in last seal section (10) hole, bottom, connect valve (13) and pressure cap (14) in lower seal section (11) hole, bottom by the fixing lower seal section (11) of shear pin (12); Sand cap (15) is threaded with last seal section (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204307650U CN202338303U (en) | 2011-11-03 | 2011-11-03 | Sand-proof type preset underground throttle with retractable air tap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204307650U CN202338303U (en) | 2011-11-03 | 2011-11-03 | Sand-proof type preset underground throttle with retractable air tap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202338303U true CN202338303U (en) | 2012-07-18 |
Family
ID=46486996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204307650U Expired - Fee Related CN202338303U (en) | 2011-11-03 | 2011-11-03 | Sand-proof type preset underground throttle with retractable air tap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202338303U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519137A (en) * | 2018-11-30 | 2019-03-26 | 四川圣诺油气工程技术服务有限公司 | A kind of downhole-choke release tool |
| CN109594956A (en) * | 2018-11-29 | 2019-04-09 | 四川圣诺油气工程技术服务有限公司 | A kind of dissolvable formula underground throttle device |
| CN111075407A (en) * | 2019-12-18 | 2020-04-28 | 中国石油天然气股份有限公司 | Gas well full life cycle downhole throttling production device and use method thereof |
-
2011
- 2011-11-03 CN CN2011204307650U patent/CN202338303U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109594956A (en) * | 2018-11-29 | 2019-04-09 | 四川圣诺油气工程技术服务有限公司 | A kind of dissolvable formula underground throttle device |
| CN109519137A (en) * | 2018-11-30 | 2019-03-26 | 四川圣诺油气工程技术服务有限公司 | A kind of downhole-choke release tool |
| CN111075407A (en) * | 2019-12-18 | 2020-04-28 | 中国石油天然气股份有限公司 | Gas well full life cycle downhole throttling production device and use method thereof |
| CN111075407B (en) * | 2019-12-18 | 2024-01-30 | 中国石油天然气股份有限公司 | Underground throttling production device for gas well full life cycle and application method thereof |
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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: 20120718 Termination date: 20201103 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |