CN2055533U - Permanent-magnet broken-rod fishing tool for well drilling - Google Patents
Permanent-magnet broken-rod fishing tool for well drilling Download PDFInfo
- Publication number
- CN2055533U CN2055533U CN 89208139 CN89208139U CN2055533U CN 2055533 U CN2055533 U CN 2055533U CN 89208139 CN89208139 CN 89208139 CN 89208139 U CN89208139 U CN 89208139U CN 2055533 U CN2055533 U CN 2055533U
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- CN
- China
- Prior art keywords
- magnetic
- permanent
- rod
- broken
- magnet
- 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
The utility model discloses a permanent-magnet broken-rod fishing tool for well drilling, belonging to a fishing tool for treating the accident of breaking a drill rod in a drilling engineering construction. The fishing tool adopts permanent magnetic material of Na-Fe-B, a magnetic pole is arranged as a magnet square matrix of 5 rows 4 lines with the adjacent opposite poles, and the magnetic pole and half side of a pipe shell forms a magnetic circuit. The dissipation of magnetic force line is avoided, the magnetic attractive force is enhanced, with more than 250 kg of total attracting force, and the magnetic force can accurately attracts the righting broken-rod. The permanent-magnet broken-rod fishing tool is suitable for the drilling well with the bore diameter less than 76 mm and the broken-rod fishing with the diameter of drill rod less than 50 mm.
Description
The utility model belongs to the disconnected bar fishing tool of a kind of drilling well.
In the drilling project drillng operation, because the stratum that boring is passed is soft, rock joint is grown, hole wall collapse usually appears, the aperture is little about causing, " urceolus " oversize hole section that median pore radius is big, in the section of " urceolus " hole, drilling rod fractures easily, one section drilling rod broken end in the hole after fractureing, and hole wall usually reclines, during salvaging, be difficult to find the drilling rod broken end, form the accident that is difficult for eliminating, in the past because no special tool, people have to insert in the drilling well with recovery hook, seek so that the drilling rod broken end is set upright with artificial stirring, insert then and salvage the clamping device bar that will break and extract, but this method wastes time and energy, can't exactly the bar that breaks be set upright, very the person can not salvage because of disconnected bar and causes drilling well discarded.
The purpose of this utility model provides a kind of suitable fisher, it adopts permanent magnet to improve magnetic energy, magnetic structure can avoid the magnetic line of force to scatter and disappear, total magnetic attraction reaches more than 250 kilograms, can attract, catch and set upright the drilling rod broken end and enter in the salvaging clamping device, reach the purpose of accurately successfully salvaging the disconnected bar of drilling well.
Fig. 1 is the utility model structure chart, fisher combines by salvaging clamping device and magnetic mechanism, (4) can break end tapping to be lifted out disconnected bar with Gong Cone Huo Mu Cone (5) forms ， Gong Cone Huo Mu Cone (5) with the bar that breaks by drilling rod (1) drive by reducing joint (2), conduit reducing joint (3), conduit to salvage clamping device.Magnetic mechanism is made up of copper alloy anchor clamps (7), permanent magnet (9), the half of steel pipe of head of the trumpet (6), copper alloy anchor clamps (7) are half garden housing, have 5 row, the 4 row rectangle inclined hole of totally 20 Ge Dai Cone degree above, embedded identical shaped permanent magnet (9), permanent magnet (9) is arranged by adjacent unlike pole and is formed matrix, and constitutes magnetic circuit with the half of steel pipe of head of the trumpet (6) of copper alloy anchor clamps (7) outer lining, has avoided the magnetic line of force to scatter and disappear, strengthen magnetic attraction greatly, total magnetic attraction can reach 250 kilograms.
Permanent magnet (9) adopts the Nd-Fe-B alloy of high energy product, specification is totally 20 of 7 * 38mm, pole arrangement is that 5 row 4 are listed as the adjacent magnet square formation of unlike pole that is, the copper alloy anchor clamps (7) of magnet carrier square formation are anchored on the lower end of the half of steel pipe of head of the trumpet (6) with rivet (8).
The mode of occupation of narration fisher below: drilling rod takes place in the drillng operation fracture after the accident, at first observe drilling rod fracture situation, and select suitable De Gong Cone Huo Mu Cone (5) to pack into and salvage in the clamping device, determine the hole depth of disconnected bar broken end in the hole,, explore through upper and lower, left and right again with in the hand-hole under the fisher, the magnetic mechanism bar that just will break holds and sets upright, then general who has surrendered's broken end under the fisher is included among public Cone or the female Cone (5), promoted after the tapping of rotation drilling rod (1), salvage disconnected bar.
The utility model has the advantage of to seek and set upright disconnected bar accurate quick, magnetic attraction is big, is no less than 76mm and the disconnected bar salvaging below the drill pipe diameter 50mm applicable to the drilling well aperture.
Fig. 2 is copper alloy anchor clamps views.
Claims (2)
1, a kind of drilling well is with the disconnected bar fisher of permanent magnetism, combine by magnetic mechanism and salvaging clamping device, it is characterized in that magnetic mechanism is made up of copper alloy anchor clamps (7), permanent magnet (9), the half of steel pipe of head of the trumpet (6), copper alloy anchor clamps (7) are half garden shelly, have the rectangle inclined hole of band tapering above, embedded identical shaped permanent magnet (9), permanent magnet (9) are arranged by adjacent unlike pole and are formed matrix, and constitute magnetic circuit with the half of steel pipe of head of the trumpet (6) of copper alloy anchor clamps (7) outer lining.
2, fisher according to claim 1 is characterized in that pole arrangement is that 5 row 4 are listed as the adjacent magnet square formation of unlike pole that is.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89208139 CN2055533U (en) | 1989-05-29 | 1989-05-29 | Permanent-magnet broken-rod fishing tool for well drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89208139 CN2055533U (en) | 1989-05-29 | 1989-05-29 | Permanent-magnet broken-rod fishing tool for well drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2055533U true CN2055533U (en) | 1990-04-04 |
Family
ID=4864871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89208139 Withdrawn CN2055533U (en) | 1989-05-29 | 1989-05-29 | Permanent-magnet broken-rod fishing tool for well drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2055533U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988485B (en) * | 2009-08-07 | 2012-05-23 | 陈际军 | Electric fishing tool |
| CN108005604A (en) * | 2017-11-10 | 2018-05-08 | 中国石油天然气股份有限公司 | Half-sheet type grindable strong-magnetic fishing device |
| CN108678699A (en) * | 2018-05-16 | 2018-10-19 | 中国煤炭地质总局勘查研究总院 | A kind of fishing tool and its Refloatation method |
-
1989
- 1989-05-29 CN CN 89208139 patent/CN2055533U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988485B (en) * | 2009-08-07 | 2012-05-23 | 陈际军 | Electric fishing tool |
| CN108005604A (en) * | 2017-11-10 | 2018-05-08 | 中国石油天然气股份有限公司 | Half-sheet type grindable strong-magnetic fishing device |
| CN108678699A (en) * | 2018-05-16 | 2018-10-19 | 中国煤炭地质总局勘查研究总院 | A kind of fishing tool and its Refloatation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |