CN204299526U - Fisher for underground testing instruments - Google Patents
Fisher for underground testing instruments Download PDFInfo
- Publication number
- CN204299526U CN204299526U CN201420642596.0U CN201420642596U CN204299526U CN 204299526 U CN204299526 U CN 204299526U CN 201420642596 U CN201420642596 U CN 201420642596U CN 204299526 U CN204299526 U CN 204299526U
- Authority
- CN
- China
- Prior art keywords
- urceolus
- salvaging
- tooth assembly
- salvage
- fisher
- 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
Links
Abstract
The utility model relates to a kind of fisher for underground testing instruments, is applicable to the salvaging to the shaft-like small falling object in sleeve pipe, belongs to oilfield downhole operation workover tool technical field.It comprises top connection, urceolus, and top connection and urceolus, by being threaded, are provided with in the lower end of urceolus and salvage tooth assembly, and salvage tooth assembly and comprise annular ledge, annular ledge is evenly equipped with at least 3 card teeth, and card tooth is fixed on bearing by bearing pin and spring.The utility model is by salvaging the folding of the built-in salvaging tooth assembly of urceolus, increase the effective drift diameter salvaging urceolus, the shaft-like tester fallen in sleeve pipe is entered smoothly and salvages outer tube inner chamber, and salvaged tooth assembly firmly blocks, salvage wide accommodation, success rate is high.
Description
Technical field
The utility model relates to a kind of fisher for underground testing instruments, is applicable to the salvaging to the shaft-like small falling object in sleeve pipe, belongs to oilfield downhole operation workover tool technical field.
Background technology
At present, tester is in the process of testing the empty well cylinder of Oil/gas Well, and normal generation carries its steel wire cable fracture accident of going into the well, and causes tester to fall in well.Known general test instrument is with special fishing head, Special fishing tool can be used to salvage fishing head, but contact with internal surface of sleeve pipe because of tester top, the internal diameter of existing Special fishing tool is relatively fixing, the well instrument that falls not easily is introduced into fishing tool inner chamber, causes fishing success ratio low; Especially when the well instrument top that falls is with residual steel wire cable, can not mount between fishing tool and steel wire cable, interim self-made tool can only be carried to implement to salvage by oil pipe, this kind of measure operating cost is high, it is long to stop the well time, and fishing success ratio cannot ensure, simultaneously because the intensity of tester own is not high, operation does not very easily cause the damage of tester, increases additional economic loss.
Summary of the invention
The utility model object is constructed into the defects such as power is low, long construction period to overcome the salvaging of above-mentioned prior art, provides a kind of fisher for underground testing instruments.
The utility model comprises top connection, urceolus, top connection and urceolus, by being threaded, are provided with in the lower end of urceolus and salvage tooth assembly, salvage tooth assembly and comprise annular ledge, annular ledge is evenly equipped with at least 3 card teeth, and card tooth is fixed on bearing by bearing pin and spring.
The utility model is by salvaging the folding of the built-in salvaging tooth assembly of urceolus, increase the effective drift diameter salvaging urceolus, the shaft-like tester fallen in sleeve pipe is entered smoothly and salvages outer tube inner chamber, and salvaged tooth assembly firmly blocks, salvage wide accommodation, success rate is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the top view of salvaging tooth assembly 5 of the present utility model.
Detailed description of the invention
From Fig. 1,2, the utility model comprises top connection 1, urceolus, top connection 1 and urceolus are by being threaded, be provided with in the lower end of urceolus and salvage tooth assembly 5, salvage tooth assembly 5 and comprise annular ledge 6, annular ledge 6 is evenly equipped with at least 3 card teeth 7, and card tooth 7 is fixed on annular ledge 6 by bearing pin 9 and spring 8.
The bottom of described urceolus is provided with guide shoe 4.
Described urceolus comprises upper shell 2 and lower shell 3, and the bottom of upper shell 2 and lower shell 3 is separately installed with one group and salvages tooth assembly 5.
When using the utility model to salvage the shaft-like tester fallen within sleeve pipe, the utility model is delivered to top of fish by steel wire cable or fishing string, the shaft-like tester fallen within sleeve pipe enters under the effect of guide shoe 4 of the present utility model salvages outer tube inner chamber, continue to transfer the utility model, the tester fallen within sleeve pipe will back down the card tooth 7 on two groups of annular ledges 6 successively, increase urceolus effective drift diameter, make it all enter outer tube inner chamber.On when carrying the utility model, card tooth 7, under the effect of spring 8, by shaft-like tester stuck fast, and is promoted to ground with the utility model, thus is successfully pulled out by well build-in test instrument.
Claims (3)
1. fisher for underground testing instruments, comprise top connection (1), urceolus, top connection (1) and urceolus are by being threaded, it is characterized in that: be provided with in the lower end of urceolus and salvage tooth assembly (5), salvage tooth assembly (5) and comprise annular ledge (6), annular ledge (6) is evenly equipped with at least 3 card teeth (7), and card tooth (7) is fixed on annular ledge (6) by bearing pin (9) and spring (8).
2. fisher for underground testing instruments according to claim 1, is characterized in that: the bottom of described urceolus is provided with guide shoe (4).
3. fisher for underground testing instruments according to claim 1 and 2, is characterized in that: described urceolus comprises upper shell (2) and lower shell (3), and the bottom of upper shell (2) and lower shell (3) is separately installed with one group and salvages tooth assembly (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420642596.0U CN204299526U (en) | 2014-10-31 | 2014-10-31 | Fisher for underground testing instruments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420642596.0U CN204299526U (en) | 2014-10-31 | 2014-10-31 | Fisher for underground testing instruments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204299526U true CN204299526U (en) | 2015-04-29 |
Family
ID=53105072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420642596.0U Expired - Fee Related CN204299526U (en) | 2014-10-31 | 2014-10-31 | Fisher for underground testing instruments |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204299526U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723400A (en) * | 2018-12-27 | 2019-05-07 | 贵州航天凯山石油仪器有限公司 | A kind of downhole instrument salvaging structure |
-
2014
- 2014-10-31 CN CN201420642596.0U patent/CN204299526U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723400A (en) * | 2018-12-27 | 2019-05-07 | 贵州航天凯山石油仪器有限公司 | A kind of downhole instrument salvaging structure |
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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: 20150429 Termination date: 20161031 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |