CN202338304U - Easily-fished slip-type underground throttle with knock-off prevention cover - Google Patents
Easily-fished slip-type underground throttle with knock-off prevention cover Download PDFInfo
- Publication number
- CN202338304U CN202338304U CN2011204311035U CN201120431103U CN202338304U CN 202338304 U CN202338304 U CN 202338304U CN 2011204311035 U CN2011204311035 U CN 2011204311035U CN 201120431103 U CN201120431103 U CN 201120431103U CN 202338304 U CN202338304 U CN 202338304U
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- Prior art keywords
- slip
- prevention cover
- throttle
- type underground
- seat
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- Expired - Fee Related
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Abstract
The utility model discloses an easily-fished slip-type underground throttle with a knock-off prevention cover, which is designed for solving the problems that the underground throttle is difficult to fish and when a sand prevention cover is blocked, an upstream and downstream passage of the throttle cannot be formed. The slip-type underground throttle mainly comprises a body, a slip, a rubber barrel, a cone seat, a cone seat sleeve, a movable sleeve, the sand prevention cover and the like. When the movable sleeve moves downwards, the rubber barrel retracts and the friction force between the rubber barrel and the wall of a well is reduced, so that the slip-type underground throttle is easier to fish; and when the sand prevention cover of the throttle is blocked and the throttle is failed to fish, the sand prevention cover can be downwards knocked off, so that airflow passes through a gap between the sand prevention cover and an outer sleeve to form the upstream and downstream passage, and thus, the phenomenon that gas and liquid flow cannot flow upward in the kill operation process is avoided and the subsequent operation of the gas well is successfully carried out.
Description
Technical field
The utility model relates to a kind of easy salvaging can destroy sand cap slip-type underground throttle device, belongs to gas field development technique field.
Background technology
In natural gas extraction,, underground throttle device usually is installed in the gas well down-hole for step-down, throttling, limited production.The underground throttle device of extensive use at present is the slip-type underground throttle device, and this device is sent restriction choke into design attitude in the well through piano wire, relies on the slips location, utilizes the annular space between packing element Seal Oil inside pipe wall and the device body.In the prolonged application process, find; The packing element of part slip-type underground throttle device can't bounce back and take place permanent deformation when salvaging, and pick-up drag is crossed the phenomenon that steel wire appears breaking in conference during salvaging, causes down-hole accident; And in a single day the restriction choke sand cap is capped one deck fracturing sand or fracturing fluid; Will make upstream and downstream can't form passage, and the restriction choke salvaging is unsuccessful, can't carry out follow-up kill job.
Summary of the invention
The purpose of the utility model is to provide a kind of easy salvaging can destroy sand cap slip-type underground throttle device, promptly provides a kind of packing element to bounce back and when sand cap stops up, can valve be destroyed, so that upstream and downstream forms the brand-new slip-type underground throttle device of passage.
The concrete technology contents of the utility model is following:
Fishing neck, all be enclosed within on the body that is provided with top baffle ring, gingival cyst of mucous gland in the newborn button and bottom fastener by the fixing slips of slips hoop, awl seat, awl cover for seat, packing element, movable sleeve, the awl cover for seat is fixed its gingival cyst of mucous gland in the newborn button with awl seat screwed connection and by catch; Movable sleeve screwed connection overcoat; Block is located in the lateral surface groove of body; Center-pole is located in the body endoporus, and connects dispenser with pin, and valve is fixed in center-pole bottom endoporus, briquetting screwed connection sand cap by briquetting.
The advantage of the utility model is: when movable sleeve moves down, make packing element be able to retraction, reduce the frictional force of the packing element and the borehole wall, make to salvage to be more prone to; When restriction choke gas sand cap stops up and salvages failure, can below hit sand cap, make air communication cross the gap of sand cap and overcoat, form the upstream and downstream passage, gas-liquid flow can't be up when avoiding kill job, makes to go on foot operation under the gas well and carry out smoothly.
Description of drawings
Fig. 1 can destroy sand cap slip-type underground throttle device structural representation for being prone to salvaging.
Fig. 2 is awl seat and the body gingival cyst of mucous gland in the newborn button sketch map that is connected with a joggle.
The specific embodiment
Embodiment:
With reference to Fig. 1 and 2 the embodiment of the utility model is further specified:
The utility model has following three kinds of functions: the seat envelope, deblocking, destroy sand cap.
The seat envelope
During input, this utility model is transferred to design attitude in the well, carry steel wire on slowly, slips 8 is moved down and stuck with respect to body 3 and awl seat 9 in tube inner wall with steel wire; Carry steel wire in the continuation, make the fixedly gingival cyst of mucous gland in the newborn button engagement of gingival cyst of mucous gland in the newborn button 10 with the body 3 of awl seat 9, this moment, center-pole 6 promoted to move on the movable sleeve 14 together with sand cap 19; Packing element 13 is strutted and contact and reach pre-sealed effect with oil pipe; When opening well and making production,, move on sand cap 19 and the movable sleeve 14 because there is pressure reduction in the restriction choke upstream and downstream; Continue to strut packing element 13, reach the effect that fully seals with oil pipe; Hit again cut off dispenser 1 and body 3 and center-pole 6 be connected pin 4, seat seals successfully.
Deblocking
When salvaging restriction choke; At first with hitting core bar 6 under the special tool, (this fastener is that a plurality of grooves are axially opened in body 3 bottoms, and process special thermal treatment technology to make its bottom fastener of crossing body 3; Make it have radial elastic deformation) and promote sand cap 19 and move down; Movable sleeve 14 moves down with respect to body 3, makes packing element 13 be able to retraction, carries frictional resistance in the releasing.
Destroy sand cap
When being covered by fracturing sand and fracturing fluid, sand cap 19 results in blockage and restriction choke when salvaging failure; To hit core bar 6 under the steel wire connection special tool, make its bottom fastener of crossing body 3, and promotion sand cap 19 moves down; This moment, the gap appearred in sand cap 19 and 16 in overcoat; Sealing ring because of center-pole 6 skids off body 3 again, makes it lose sealing function, and air-flow just can flow to downstream from sand cap 19 and the gap of overcoat 16 and the perforate of center-pole 6.Can not fall into the shaft bottom because the existence of block 15, sand cap 19, overcoat 16, movable sleeve 14 and center-pole 6 hang on the body 3, destroy the sand cap success.
Claims (1)
1. an easy salvaging can be destroyed sand cap slip-type underground throttle device, it is characterized in that:
Fishing neck (5), slips (8), awl seat (9), awl cover for seat (12), packing element (13), the movable sleeve (14) fixed by slips hoop (7) all are enclosed within on the body (3) that is provided with top baffle ring (2), gingival cyst of mucous gland in the newborn button and bottom fastener; Awl cover for seat (12) and (9) screwed connection of awl seat, and by catch (11) that its gingival cyst of mucous gland in the newborn button (10) is fixing; Movable sleeve (14) screwed connection overcoat (16); Block (15) is located in the lateral surface groove of body (3); Center-pole (6) is located in body (3) endoporus, and connects dispenser (1) with pin (4), and valve (17) is fixed in center-pole (6) bottom endoporus, briquetting (18) screwed connection sand cap (19) by briquetting (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204311035U CN202338304U (en) | 2011-11-03 | 2011-11-03 | Easily-fished slip-type underground throttle with knock-off prevention cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204311035U CN202338304U (en) | 2011-11-03 | 2011-11-03 | Easily-fished slip-type underground throttle with knock-off prevention cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202338304U true CN202338304U (en) | 2012-07-18 |
Family
ID=46486997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204311035U Expired - Fee Related CN202338304U (en) | 2011-11-03 | 2011-11-03 | Easily-fished slip-type underground throttle with knock-off prevention cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202338304U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100239A (en) * | 2014-06-06 | 2014-10-15 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Atomizing device and foam discharging starting atomization water discharging gas recovery method thereof |
| CN104358550A (en) * | 2014-11-12 | 2015-02-18 | 中国石油天然气股份有限公司 | Clamping mechanism of large-diameter throttling device |
| 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 |
| CN105370252A (en) * | 2014-08-25 | 2016-03-02 | 中国石油天然气股份有限公司 | Method and equipment for exploiting gas-condensate well |
| CN109057749A (en) * | 2018-07-30 | 2018-12-21 | 中国石油天然气股份有限公司 | A kind of easy fishing slip formula underground throttle device |
| CN109306856A (en) * | 2017-07-26 | 2019-02-05 | 中国石油天然气股份有限公司 | A kind of multistage takes liquid device and method |
| CN109339751A (en) * | 2018-10-19 | 2019-02-15 | 中国石油天然气股份有限公司 | It is a kind of easily to bore formula composite throttling device and application method |
| 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 |
| CN109812248A (en) * | 2019-02-28 | 2019-05-28 | 中国石油天然气股份有限公司 | A kind of soluble flow controller and method |
| CN112343564A (en) * | 2020-11-03 | 2021-02-09 | 中国石油天然气股份有限公司 | Gas well underground throttler air faucet automatic falling mechanism and use method |
-
2011
- 2011-11-03 CN CN2011204311035U patent/CN202338304U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104100239B (en) * | 2014-06-06 | 2016-08-24 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of atomising device and bubble row thereof start atomization water pumping gas production method |
| CN104100239A (en) * | 2014-06-06 | 2014-10-15 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Atomizing device and foam discharging starting atomization water discharging gas recovery method thereof |
| CN105370252B (en) * | 2014-08-25 | 2017-11-10 | 中国石油天然气股份有限公司 | Condensate gas well recovery method and equipment |
| CN105370252A (en) * | 2014-08-25 | 2016-03-02 | 中国石油天然气股份有限公司 | Method and equipment for exploiting gas-condensate well |
| CN104358550B (en) * | 2014-11-12 | 2017-10-17 | 中国石油天然气股份有限公司 | A kind of locking mechanism of major diameter flow controller |
| 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 |
| CN104358550A (en) * | 2014-11-12 | 2015-02-18 | 中国石油天然气股份有限公司 | Clamping mechanism of large-diameter throttling device |
| CN109306856A (en) * | 2017-07-26 | 2019-02-05 | 中国石油天然气股份有限公司 | A kind of multistage takes liquid device and method |
| CN109057749A (en) * | 2018-07-30 | 2018-12-21 | 中国石油天然气股份有限公司 | A kind of easy fishing slip formula underground throttle device |
| CN109339751A (en) * | 2018-10-19 | 2019-02-15 | 中国石油天然气股份有限公司 | It is a kind of easily to bore formula composite throttling device and application method |
| 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 |
| CN109812248A (en) * | 2019-02-28 | 2019-05-28 | 中国石油天然气股份有限公司 | A kind of soluble flow controller and method |
| CN112343564A (en) * | 2020-11-03 | 2021-02-09 | 中国石油天然气股份有限公司 | Gas well underground throttler air faucet automatic falling mechanism and use method |
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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 |