CN207750058U - Reversible fishing anchor - Google Patents
Reversible fishing anchor Download PDFInfo
- Publication number
- CN207750058U CN207750058U CN201721176590.9U CN201721176590U CN207750058U CN 207750058 U CN207750058 U CN 207750058U CN 201721176590 U CN201721176590 U CN 201721176590U CN 207750058 U CN207750058 U CN 207750058U
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- CN
- China
- Prior art keywords
- pole
- center
- claws
- top connection
- middle boss
- 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.)
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Abstract
A kind of reversible fishing anchor, including center-pole, top connection, it is characterized in that：Center-pole threaded upper ends connect top connection, and ring cavity is arranged between top connection lower end and center-pole, and bar-shaped trough is equipped on the center-pole in ring cavity, drag for pin inner end affixed on pawl and are slidably arranged in bar-shaped trough；In center-pole, lower part be respectively equipped with middle boss, lower convex platform, the top of middle boss is taper surface, drags for and six claws are arranged on pawl, and the slope surface of the inner surface setting and the cooperation of middle boss taper surface of six claws, the outer surface of six claws is threaded.The utility model has the characteristics that dual fishing and can move back.
Description
Technical field
The utility model belongs to a kind of oil well equipment, especially a kind of reversible fishing anchor.
Background technology
The salvaging of oil field back-off packer for many years always exists salvaging difficulty or since fishing tool designs endless
Rationally, although causing fishing tool to be coupled successfully with packer, since the complexity of underground situation does not make packer solution
It seals successfully；Since conventional fishing tool cannot be detached from packer again, thus tubing string is caused to can not be successfully out, not only influenced
It normal production and may also result in new accident, the loss of bigger brought to oil well.
Invention content
The purpose of this utility model is to provide a kind of reversible fishing anchor, has the characteristics that dual fishing and can move back, prevents thing
Therefore generation, realize safety in production.
The technical scheme that the utility model is provided is as follows：Including center-pole, top connection, it is characterized in that：Center-pole upper end spiral shell
Line connects top connection, and ring cavity is arranged between top connection lower end and center-pole, and bar-shaped trough is equipped on the center-pole in ring cavity,
Affixed pin inner end is slidably arranged in bar-shaped trough on fishing pawl；In center-pole, lower part be respectively equipped with middle boss, lower convex platform,
The top of middle boss is taper surface, drags for and six claws are arranged on pawl, inner surface setting and the cooperation of middle boss taper surface of six claws
The outer surface of slope surface, six claws is threaded.
The good effect of the utility model：Have the characteristics that dual fishing and can move back, prevent the generation of accident, realizes safety
Production.
Description of the drawings
Fig. 1 is reversible fishing anchor structure figure.
Fig. 2 is the A-A sectional views of Fig. 1.
Fig. 3 is reversible fishing anchor fundamental diagram.
Component serial number in attached drawing：Top connection 1, center-pole 2, fishing pawl 3, pin 4, packer 5, bar-shaped trough B, six claw C,
Screw thread F, middle boss D, lower convex platform E.
Specific implementation mode
See Fig. 1-3, concrete structure is as follows：1 upper end of top connection is machined with tubing round thread, 1 lower end of top connection on center-pole 2
End is connected through a screw thread, and ring cavity is arranged between 1 lower end of top connection and center-pole 2, and item is equipped on the center-pole 2 in ring cavity
Shape slot B drags for 4 inner end of pin affixed on pawl 3 and is slidably arranged in bar-shaped trough B；In center-pole 2, lower part be respectively equipped with convexity
Platform D, lower convex platform E, middle boss D top be taper surface, drag for pawl 3 on be arranged six claw C, six claw C inner surface setting in
The slope surface of boss D taper surfaces cooperation, the outer surface of six claw C is threaded F.
Operation principle：With tubing string by fishing anchor down toward predetermined depth, pushing tubing string is designated as 0 up to tubing string suspending weight, at this time may be used
Move back formula fishing anchor fishing pawl 3 on six claw C under weight it is interior receipts and with the threaded connection of 5 top connection upper end of packer, at this moment delay
Slow upper lifting pipe post, the boss D on center-pole 2 strut six claw C on fishing pawl 3, when suspending weight instruction is more than head pipe post weight of going into the well
When show that fishing anchor is docked successfully with packer.It can continue upper lifting pipe post at this time by removing seal for packer.Work as removing seal for packer
After success, the boss E on the center-pole 2 of reversible fishing anchor enters in the interior step M of the locating ring N on packer, further prevents
Only packer falls off.
Claims (1)
1. a kind of reversible fishing 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 equipped on the center-pole in ring cavity, drags for pin affixed on pawl
Inner end is slidably arranged in bar-shaped trough；In center-pole, lower part be respectively equipped with middle boss, lower convex platform, the top of middle boss is cone
Shape face drags for and six claws is arranged on pawl, the slope surface of the inner surface setting and the cooperation of middle boss taper surface of six claws, the appearance of six claws
Face is threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721176590.9U CN207750058U (en) | 2017-09-14 | 2017-09-14 | Reversible fishing anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721176590.9U CN207750058U (en) | 2017-09-14 | 2017-09-14 | Reversible fishing anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207750058U true CN207750058U (en) | 2018-08-21 |
Family
ID=63146690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721176590.9U Active CN207750058U (en) | 2017-09-14 | 2017-09-14 | Reversible fishing anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207750058U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575180A (en) * | 2017-09-14 | 2018-01-12 | 吴晰 | Reversible drags for anchor |
-
2017
- 2017-09-14 CN CN201721176590.9U patent/CN207750058U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575180A (en) * | 2017-09-14 | 2018-01-12 | 吴晰 | Reversible drags for anchor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |