CN202866673U - Clamping claw type release connector - Google Patents
Clamping claw type release connector Download PDFInfo
- Publication number
- CN202866673U CN202866673U CN 201220555612 CN201220555612U CN202866673U CN 202866673 U CN202866673 U CN 202866673U CN 201220555612 CN201220555612 CN 201220555612 CN 201220555612 U CN201220555612 U CN 201220555612U CN 202866673 U CN202866673 U CN 202866673U
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- CN
- China
- Prior art keywords
- sliding sleeve
- top connection
- overcoat
- boss
- claw
- 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 - Lifetime
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Abstract
Disclosed is a clamping claw type release connector. The clamping claw type release connector comprises an upper connector, wherein the lower portion of the upper connector is provided with an outer sleeve in a sleeved mode, a sliding sleeve is installed inside the upper connector and the sliding sleeve and the upper connector are connected through a disconnecting pin, the lower end of the upper connector is connected with a limiting sleeve through inner threads, a boss is placed inside the limiting sleeve, the upper connector is connected with an elastic claw through outer threads, the inner surface of the lower end of the elastic claw is provided with a boss and the outer surface of the elastic claw is provided with a boss, a boss is embedded inside a groove of the inner surface of the middle portion of the outer sleeve, the lower end of the sliding sleeve is connected with a fixed sleeve through the outer threads, the outer surface of the lower end of the fixed sleeve is provided with a boss, and the lower end of the outer sleeve is connected with the lower connector through the outer threads. The clamping claw type release connector is reliable in disconnection, convenient to refloat, simple in structure, and convenient to operate.
Description
Technical field
The utility model relates to a kind of instrument used in the oil extraction in oil field field, especially relates to a kind of jack catchs type back-off sub.
Background technology
Existing back-off sub on the oil field, all adopt left-hand thread to be threaded or pitching after just can cut off the structure that connects pin, the back-off sub of this structure in use will be suppressed by ground after ground back-off or the pitching could realize that packer separates with oil pipe, need to be lowered to anti-rotation slips instrument owing to adopt back-off to give up, increased difficulty of construction, adopt pitching give up then may because of the releasing tool lower end build the pressure or steel ball seat not tight, and the problem such as cause that tubing string is lost not opened.And salvage inconvenience, other foreign material are arranged.
Summary of the invention
In order to overcome the deficiency that exists in the background technology, the utility model provides a kind of jack catchs type back-off sub, and this back-off sub is thrown off reliable, and it is convenient to salvage; Simple in structure, easy to operate.
The technical solution of the utility model is: this jack catchs type back-off sub comprises top connection, top connection bottom cover has overcoat, sliding sleeve is housed in the top connection and connects by throwing off pin, the end of throwing off pin extends in the annular groove of sliding sleeve, the top connection lower end is connected with stop collar by internal thread, lower convex platform is arranged in the stop collar, top connection is connected with elastic claw by external screw thread, elastic claw lower end inner surface has the inner convex platform external surface that outer lug boss is arranged, outer lug boss is embedded in the groove of middle part inner surface of overcoat, the sliding sleeve lower end is connected with fixed cover by external screw thread, and fixed cover lower end external surface has boss, and the overcoat lower end is connected with lower contact by external screw thread.
Such scheme Elastic pawl top is tubulose, and the bottom evenly distributes vertically for a minute claw, minute claw; Sliding sleeve middle part outer wall is provided with cannelure, and cannelure is corresponding with the lower convex platform of stop collar lower end inwall; Stop collar, elastic claw and fixed cover are positioned at the overcoat of top connection below and the chamber of sliding sleeve.
The utlity model has following beneficial effect: because it is reliable to take this back-off sub of such scheme to throw off, it is convenient to salvage; Simple in structure, easy to operate.
Description of drawings:
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is structural representations of accompanying drawing 1 Elastic pawl.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, this jack catchs type back-off sub comprises top connection 1, top connection 1 bottom cover has overcoat 6, be provided with sealing ring B 5 between top connection 1 and the overcoat 6, sliding sleeve 4 is housed in the top connection 1 and connects by throwing off pin 3, the end of throwing off pin 3 extends in the annular groove 12 of sliding sleeve 4, sliding sleeve 4 upper port inboard is the conical surface 13, be provided with sealing ring A 2 between top connection 1 and the sliding sleeve 4, top connection 1 lower end is connected with stop collar 8 by internal thread, stop collar 8 lower end inwalls have lower convex platform 14, the 4 limited location effects of 14 pairs of sliding sleeves of lower convex platform, top connection 1 is connected with elastic claw 7 by external screw thread, and minute claw lower end inner surface of elastic claw 7 has inner convex platform 16 external surfaces that outer lug boss 17 is arranged, and outer lug boss 17 is embedded in the groove 18 of middle part inner surface of overcoat 6, sliding sleeve 4 lower ends are connected with fixed cover 9 by external screw thread, fixed cover 9 lower end external surfaces have boss 15, and boss 15 heads on inner convex platform 16 is embedded in the groove 18 outer lug boss 17, and overcoat 6 lower ends are connected with lower contact 11 by external screw thread.Be provided with sealing ring C 10 between overcoat 6 and the lower contact 11.
Such scheme Elastic pawl top is tubulose, and the bottom evenly distributes vertically for a minute claw, minute claw; Sliding sleeve middle part outer wall is provided with cannelure, and cannelure is corresponding with the lower convex platform of stop collar lower end inwall; Stop collar, elastic claw and fixed cover are positioned at the overcoat of top connection below and the chamber of sliding sleeve.
The utility model is gone into the well to design attitude with tubing string during use, throw steel ball in the tubing string, steel ball drops on the conical surface 13 of sliding sleeve 4, suppress in the tubing string, because the sealing function of steel ball, act on the sliding sleeve 4, disengagement pin 3 is cut off, it is descending that sliding sleeve 4 drives fixed cover 9, make boss 15 break away from elastic claw inner convex platform 16, outer lug boss 17 breaks away from the groove 18 of overcoat 6 inner surfaces under the effect of pulling force, the first half comprises that top connection, sliding sleeve, elastic claw, stop collar and fixed cover propose with tubing string, and the latter half such as overcoat, lower contact are stayed in the well.Well is interior without other polygamy junks.
Claims (5)
1. jack catchs type back-off sub, comprise top connection (1), it is characterized in that: top connection (1) bottom cover has overcoat (6), sliding sleeve (4) is housed in the top connection (1) and connects by throwing off pin (3), the end of throwing off pin (3) extends in the annular groove (12) of sliding sleeve (4), top connection (1) lower end is connected with stop collar (8) by internal thread, stop collar (8) lower end inwall has lower convex platform (14), top connection (1) is connected with elastic claw (7) by external screw thread, minute claw lower end inner surface of elastic claw (7) has inner convex platform (16) external surface that outer lug boss (17) is arranged, outer lug boss (17) is embedded in the groove (18) of middle part inner surface of overcoat (6), sliding sleeve (4) lower end is connected with fixed cover (9) by external screw thread, fixed cover (9) lower end external surface has boss (15), and overcoat (6) lower end is connected with lower contact (11) by external screw thread.
2. a kind of jack catchs type back-off sub according to claim 1 is characterized in that described sliding sleeve (4) upper port inboard is the conical surface (13).
3. a kind of jack catchs type back-off sub according to claim 1 is characterized in that: elastic claw (7) top is tubulose, and the bottom evenly distributes vertically for a minute claw, minute claw.
4. a kind of jack catchs type back-off sub according to claim 1 is characterized in that: sliding sleeve (4) middle part outer wall is provided with cannelure, and cannelure is corresponding with the lower convex platform (14) of stop collar (8) lower end inwall.
5. a kind of jack catchs type back-off sub according to claim 1 is characterized in that: stop collar (8), elastic claw (7) and fixed cover (9) are positioned at the chamber of overcoat (6) with the sliding sleeve (4) of top connection (1) below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220555612 CN202866673U (en) | 2012-10-28 | 2012-10-28 | Clamping claw type release connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220555612 CN202866673U (en) | 2012-10-28 | 2012-10-28 | Clamping claw type release connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202866673U true CN202866673U (en) | 2013-04-10 |
Family
ID=48033399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220555612 Expired - Lifetime CN202866673U (en) | 2012-10-28 | 2012-10-28 | Clamping claw type release connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202866673U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005712A (en) * | 2014-06-17 | 2014-08-27 | 江苏航天鸿鹏数控机械有限公司 | Differential pressure clutch type tail pipe rotating device |
| CN104879069A (en) * | 2015-05-29 | 2015-09-02 | 中国石油天然气股份有限公司 | Releasing joint capable of realizing telescopic compensation |
| CN108825157A (en) * | 2018-08-23 | 2018-11-16 | 成都西部石油装备股份有限公司 | A kind of novel packer back-off sub |
| CN109098678A (en) * | 2018-10-19 | 2018-12-28 | 中石化江汉石油工程有限公司 | Releasing pup joint for horizontal well conveying tractor perforation tool |
| CN109653694A (en) * | 2019-02-19 | 2019-04-19 | 中科金佳（北京）油田技术开发有限公司 | A kind of bearing assembly for tubing string |
| CN112012683A (en) * | 2019-05-28 | 2020-12-01 | 中国石油天然气集团有限公司 | Releasing tool for coiled tubing |
-
2012
- 2012-10-28 CN CN 201220555612 patent/CN202866673U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005712A (en) * | 2014-06-17 | 2014-08-27 | 江苏航天鸿鹏数控机械有限公司 | Differential pressure clutch type tail pipe rotating device |
| CN104005712B (en) * | 2014-06-17 | 2016-03-23 | 江苏航天鸿鹏数控机械有限公司 | A kind of pressure reduction clutch type tail pipe whirligig |
| CN104879069A (en) * | 2015-05-29 | 2015-09-02 | 中国石油天然气股份有限公司 | Releasing joint capable of realizing telescopic compensation |
| CN108825157A (en) * | 2018-08-23 | 2018-11-16 | 成都西部石油装备股份有限公司 | A kind of novel packer back-off sub |
| CN109098678A (en) * | 2018-10-19 | 2018-12-28 | 中石化江汉石油工程有限公司 | Releasing pup joint for horizontal well conveying tractor perforation tool |
| CN109098678B (en) * | 2018-10-19 | 2024-01-26 | 中石化江汉石油工程有限公司 | Releasing nipple for horizontal well conveying tractor perforating tool |
| CN109653694A (en) * | 2019-02-19 | 2019-04-19 | 中科金佳（北京）油田技术开发有限公司 | A kind of bearing assembly for tubing string |
| CN109653694B (en) * | 2019-02-19 | 2024-03-08 | 中科金佳（北京）油田技术开发有限公司 | Bearing assembly for tubular column |
| CN112012683A (en) * | 2019-05-28 | 2020-12-01 | 中国石油天然气集团有限公司 | Releasing tool for coiled tubing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130410 |