CN107575180A - Reversible drags for anchor - Google Patents
Reversible drags for anchor Download PDFInfo
- Publication number
- CN107575180A CN107575180A CN201710826464.1A CN201710826464A CN107575180A CN 107575180 A CN107575180 A CN 107575180A CN 201710826464 A CN201710826464 A CN 201710826464A CN 107575180 A CN107575180 A CN 107575180A
- Authority
- CN
- China
- Prior art keywords
- pole
- center
- claws
- drags
- top connection
- 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.)
- Pending
Links
- 230000002441 reversible effect Effects 0.000 title claims abstract description 9
- 210000000078 claw Anatomy 0.000 claims abstract description 15
- 230000009977 dual effect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003129 oil well Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
A kind of reversible drags for anchor, including center-pole, top connection, it is characterized in that：Center-pole threaded upper ends connect top connection, set ring cavity between top connection lower end and center-pole, bar-shaped trough is provided with the center-pole in ring cavity, drag for pin the inner affixed on pawl and be slidably arranged in bar-shaped trough；In center-pole, bottom be respectively equipped with middle boss, lower convex platform, the top of middle boss is taper surface, drags for and six claws are set on pawl, and the inner surface setting of six claws coordinates domatic with middle boss taper surface, and the outer surface of six claws is threaded.The characteristics of present invention has dual fishing and can moved back.
Description
Technical field
The invention belongs to a kind of oil well equipment, particularly a kind of reversible drags for anchor.
Background technology
The salvaging of oil field back-off packer for many years is always there is salvaging difficulty or because fishing tool designs endless
Rationally, although causing fishing tool to be coupled successfully with packer, because the complexity of underground situation does not make packer solution
Seal successfully；Because the fishing tool of routine can not depart from packer again, thus cause tubing string not rise out smoothly, not only influence
It normal production and may also result in new accident, bigger loss brought to oil well.
The content of the invention
It is an object of the invention to provide a kind of reversible to drag for anchor, the characteristics of having dual fishing and can move back, prevents accident
Occur, realize safety in production.
Technical scheme provided by the invention is as follows：Including center-pole, top connection, it is characterized in that：Center-pole threaded upper ends connect
Joint is connected, ring cavity is set between top connection lower end and center-pole, bar-shaped trough is provided with the center-pole in ring cavity, drags for pawl
Upper affixed pin the inner is slidably arranged in bar-shaped trough；In center-pole, bottom be respectively equipped with middle boss, lower convex platform, convexity
The top of platform is taper surface, drags for and six claws are set on pawl, the inner surface setting of six claws coordinate with middle boss taper surface it is domatic,
The outer surface of six claws is threaded.
The positive effect of the present invention：The characteristics of with dual fishing and can moving back, prevent the generation of accident, realize that safety is raw
Production.
Brief description of the drawings
Fig. 1 is that reversible drags for anchor structure figure.
Fig. 2 is Fig. 1 A-A sectional views.
Fig. 3 is that reversible drags for anchor fundamental diagram.
Component serial number in accompanying drawing：Top connection 1, center-pole 2 drag for pawl 3, pin 4, packer 5, bar-shaped trough B, six claw C,
Screw thread F, middle boss D, lower convex platform E.
Embodiment
See Fig. 1-3, concrete structure is as follows：The upper end of top connection 1 is machined with tubing round thread, the lower end of top connection 1 with center-pole 2
End is connected through a screw thread, and ring cavity is set between the lower end of top connection 1 and center-pole 2, and bar is provided with the center-pole 2 in ring cavity
Shape groove B, drag for the inner of pin 4 affixed on pawl 3 and be slidably arranged in bar-shaped trough B；In center-pole 2, bottom be respectively equipped with convexity
Platform D, lower convex platform E, middle boss D top are taper surface, drag for and six claw C are set on pawl 3, and six claw C inner surface setting is with
Boss D taper surfaces coordinate domatic, and six claw C outer surface is threaded F.
Operation principle：It will be dragged under anchor to desired depth with tubing string, and push tubing string until tubing string suspending weight is designated as 0, now may be used
The formula of moving back drag for the six claw C dragged on pawl 3 of anchor under weight interior receipts and with the threaded connection of the top connection upper end of packer 5, at this moment delay
Slow upper lifting pipe post, the boss D on center-pole 2 strut the six claw C dragged on pawl 3, when suspending weight instruction exceedes head pipe post weight of going into the well
When show that drag for anchor docks successfully with packer.Upper lifting pipe post can now be continued by removing seal for packer.Work as removing seal for packer
After success, the boss E that reversible is dragged on the center-pole 2 of anchor enters in the interior step M of the locating ring N on packer, further prevents
Only packer comes off.
Claims (1)
1. a kind of reversible drags for anchor, including center-pole, top connection, it is characterized in that：Center-pole threaded upper ends connect top connection, above connect
Ring cavity is set between head lower end and center-pole, bar-shaped trough is provided with the center-pole in ring cavity, drags for pin affixed on pawl
The inner is slidably arranged in bar-shaped trough；In center-pole, bottom be respectively equipped with middle boss, lower convex platform, the top of middle boss is cone
Shape face, drag for and six claws are set on pawl, the inner surface setting of six claws coordinates domatic, the appearance of six claws with middle boss taper surface
Face is threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710826464.1A CN107575180A (en) | 2017-09-14 | 2017-09-14 | Reversible drags for anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710826464.1A CN107575180A (en) | 2017-09-14 | 2017-09-14 | Reversible drags for anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107575180A true CN107575180A (en) | 2018-01-12 |
Family
ID=61033606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710826464.1A Pending CN107575180A (en) | 2017-09-14 | 2017-09-14 | Reversible drags for anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107575180A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU80189U1 (en) * | 2008-09-01 | 2009-01-27 | Общество с ограниченной ответственностью Научно-производственная фирма "Пакер" (ООО НПФ "Пакер") | CATCHER |
| CN201934046U (en) * | 2011-01-28 | 2011-08-17 | 天合石油集团汇丰石油装备股份有限公司 | Large-scale reseasing spear |
| CN202266221U (en) * | 2011-08-28 | 2012-06-06 | 中国石油集团长城钻探工程有限公司 | Salvageable bottom plug combination |
| CN103912232A (en) * | 2014-04-02 | 2014-07-09 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Returnable tubing sealing salvage gear |
| CN206000503U (en) * | 2016-09-18 | 2017-03-08 | 中国海洋石油总公司 | The retracting device of packer |
| CN207750058U (en) * | 2017-09-14 | 2018-08-21 | 吴晰 | Reversible fishing anchor |
-
2017
- 2017-09-14 CN CN201710826464.1A patent/CN107575180A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU80189U1 (en) * | 2008-09-01 | 2009-01-27 | Общество с ограниченной ответственностью Научно-производственная фирма "Пакер" (ООО НПФ "Пакер") | CATCHER |
| CN201934046U (en) * | 2011-01-28 | 2011-08-17 | 天合石油集团汇丰石油装备股份有限公司 | Large-scale reseasing spear |
| CN202266221U (en) * | 2011-08-28 | 2012-06-06 | 中国石油集团长城钻探工程有限公司 | Salvageable bottom plug combination |
| CN103912232A (en) * | 2014-04-02 | 2014-07-09 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Returnable tubing sealing salvage gear |
| CN206000503U (en) * | 2016-09-18 | 2017-03-08 | 中国海洋石油总公司 | The retracting device of packer |
| CN207750058U (en) * | 2017-09-14 | 2018-08-21 | 吴晰 | Reversible fishing anchor |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |