CN202064867U - Strongly magnetic special tool for fishing balls in oil-gas well - Google Patents
Strongly magnetic special tool for fishing balls in oil-gas well Download PDFInfo
- Publication number
- CN202064867U CN202064867U CN2011201200539U CN201120120053U CN202064867U CN 202064867 U CN202064867 U CN 202064867U CN 2011201200539 U CN2011201200539 U CN 2011201200539U CN 201120120053 U CN201120120053 U CN 201120120053U CN 202064867 U CN202064867 U CN 202064867U
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- China
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- magnetic
- permanent magnet
- magnet assembly
- special tool
- balls
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Abstract
The utility model relates to a strongly magnetic special tool for fishing balls in an oil-gas well, which is applied to fishing the balls in petroleum and natural gas logging. Weight bars are fixed at the lower end of a cable connector; the outer wall of each weight bar is sheathed with a centering guide; the lower end of the weight bar is connected with a cylindrical guide bar; the guide bar penetrates into the central hole at the top part of a permanent magnet assembly; the lower end of the guide bar is connected onto a sliding magnetic block in the permanent magnet assembly; the sliding magnetic block is arranged in a magnetic shielding housing; the lower end of the magnetic shielding housing is of an open type; return springs are arranged between the weight bars and the permanent magnet assembly; the return springs are sheathed onto the guide bar; and the return springs are cylinder helical compression springs. The strongly magnetic special tool for fishing the balls in the oil-gas well has the effects that a permanent magnet is adopted to serve as a ball fishing carrier, and a magnetic force is far greater than the weight of steel balls in the well, thereby, the steel balls in the well can be fished.
Description
Technical field
The utility model relates to oil, natural gas logging technique field.Being particularly related to a kind of down-hole special tool, is that the ball special tool is dragged in a kind of strong-magnetic oil gas down-hole.
Background technology
At present, because the oil gas well operations can cause the pressure break sand setting, have a strong impact on gas well production, reduce oil recovery gas production cost for reducing operating cost, the oil gas well operations very need drag for sand, drag for the ball instrument, and we have designed special-purpose strong-magnetic and have dragged for the ball instrument for this reason, drag for sand earlier and drag for ball again, solve layering pilot production problem.
The utility model content
The purpose of this utility model is: provide a kind of strong-magnetic oil gas down-hole to drag for the ball special tool, the ball instrument is dragged for strong-magnetic in the oil gas down-hole, designs ingeniously, and volume is little, flexible and convenient operation.
The technical solution adopted in the utility model is: the ball special tool is dragged in strong-magnetic oil gas down-hole, mainly form by cable connector, weighted lever, centralizer, back-moving spring, guide rod and permanent magnet assembly, the lower end of cable connector is fixed with weighted lever, on the outer wall of weighted lever, be with centralizer, it is characterized in that: be connected with cylinder bodily form guide rod in the lower end of weighted lever, guide rod penetrates permanent magnet assembly top center hole, and the lower end of guide rod is connected on the interior slip magnetic patch of permanent magnet assembly, and the slip magnetic patch is in the magnetic screen cover.The magnetic screen cover is cylindrical shape, and magnetic screen cover lower end is an open type; Between weighted lever and permanent magnet assembly back-moving spring is arranged, back-moving spring is enclosed within on the guide rod, and back-moving spring is a cylindroid helical-coil compression spring.
Owing in the outside of slip magnetic patch the magnetic screen cover is arranged, making does not have magnetic around the permanent magnet assembly, can not be adsorbed onto other ferromagnetic objects of down-hole.
The beneficial effects of the utility model: the ball special tool is dragged in the utility model strong-magnetic oil gas down-hole, has adopted permanent magnet as dragging for the ball carrier, and magnetic force is far longer than the weight of down-hole steel ball, can salvage the down-hole steel ball.When dragging for the ball special tool and going into the well, designed magnet shielding structure for avoiding the permanent magnet absorption borehole wall, make drag for the ball special tool around do not have magnetic force, simultaneously can be from a distance steel ball being sucked up.
Description of drawings
Fig. 1 is that ball special tool structural representation is dragged in the utility model strong-magnetic oil gas down-hole.
Fig. 2 is to pressing down special tool, the view when steel ball is held.
Fig. 3 upwards carries special tool, and steel ball is brought into the view in the magnetic screen cover.
Among the figure, 1-cable connector, 2-weighted lever, 3-centralizer, 4-back-moving spring, 5-guide rod, 6-permanent magnet assembly, 7-magnetic screen cover, 8-steel ball.
The specific embodiment
Embodiment 1: dragging for the ball special tool with a strong-magnetic oil gas down-hole is example, and the utility model is described in further detail.
Consult Fig. 1.The ball special tool is dragged in the utility model strong-magnetic oil gas down-hole, mainly is made up of cable connector 1, weighted lever 2, centralizer 3, back-moving spring 4, guide rod 5 and permanent magnet assembly 6.The lower end of cable connector 1 is fixed with weighted lever 2, is with two groups of centralizers 3 on the outer wall of weighted lever 2.Be connected with a cylinder bodily form guide rod 5 in the lower end of weighted lever 2, guide rod 5 penetrates permanent magnet assembly 6 top center holes, and the lower end of guide rod 5 is connected on the slip magnetic patch in the permanent magnet assembly 6, and the slip magnetic patch is in magnetic screen cover 7.Magnetic screen cover 7 is a cylindrical shape, and it is open type that 7 lower ends are overlapped in magnetic screen.A back-moving spring 4 is arranged between weighted lever 2 and permanent magnet assembly 6, and back-moving spring 4 is enclosed within on the guide rod 5, and back-moving spring 4 is cylindroid helical-coil compression springs.What the material of magnetic screen cover 7 adopted is stainless steel.
Assembled on site and use that the ball special tool is dragged in summary strong-magnetic oil gas down-hole.The weighted lever 2 that needs to select according to well head pressure suitable weight before the ball special tool is gone into the well is dragged in strong-magnetic oil gas down-hole, install two centralizers 3, install cable connector 1, parts are connected according to assembling drawing, to drag for ball instrument assembly then and be loaded on centralizer bottom, whether the elasticity of checking back-moving spring 4 is good, and it is descending to drag for the ball instrument by the conveying of logging winch cable.
Consult Fig. 1.Because permanent magnet assembly 6 has magnetic screen cover 7, makes permanent magnet assembly 6 peripheries not have magnetic, can not be adsorbed onto other ferromagnetic objects of down-hole.
Consult Fig. 2.State when steel ball 8 is picked up.Go downwards to steel ball and buried when place when dragging for the ball special tool by fracturing sand, because the gravity of weighted lever 2 is compressed back-moving spring 4, permanent magnet assembly 6 comes downwards to the oral area of magnetic screen cover 7, because the structure that the magnetic line of force is designed in advance prolongs, permanent magnet assembly 6 can suck up steel ball 8 across fracturing sand at this moment.
Consult Fig. 3.Drag for the ball special tool when up, this moment back-moving spring 4 returns, make permanent magnet assembly 6 sorption steel balls 8 enter in the chamber of magnetic screen cover 7, picked up owing to steel ball this moment, make permanent magnet assembly 6 become magnetic line of force closed state, can not be drawn onto other ferromagnetic materials of down-hole, drag for the ball instrument and continue to rise to well head, finish and drag for the ball operation.
Claims (2)
1. the ball special tool is dragged in a strong-magnetic oil gas down-hole, mainly by cable connector (1), weighted lever (2), centralizer (3), back-moving spring (4), guide rod (5) and permanent magnet assembly (6) are formed, be fixed with weighted lever (2) in the lower end of cable connector (1), on the outer wall of weighted lever (2), be with centralizer (3), it is characterized in that: be connected with cylinder bodily form guide rod (5) in the lower end of weighted lever (2), guide rod (5) penetrates permanent magnet assembly (6) top center hole, and the lower end of guide rod (5) is connected on the interior slip magnetic patch of permanent magnet assembly (6), and the slip magnetic patch is in magnetic screen cover (7); Magnetic screen cover (7) is a cylindrical shape, and magnetic screen cover (7) lower end is an open type; Between weighted lever (2) and permanent magnet assembly (6) back-moving spring (4) is arranged, back-moving spring (4) is enclosed within on the guide rod (5), and back-moving spring (4) is a cylindroid helical-coil compression spring.
2. the ball special tool is dragged in strong-magnetic oil gas according to claim 1 down-hole, it is characterized in that: the material of magnetic screen cover (7) is a stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201200539U CN202064867U (en) | 2011-04-22 | 2011-04-22 | Strongly magnetic special tool for fishing balls in oil-gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201200539U CN202064867U (en) | 2011-04-22 | 2011-04-22 | Strongly magnetic special tool for fishing balls in oil-gas well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202064867U true CN202064867U (en) | 2011-12-07 |
Family
ID=45058735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201200539U Expired - Lifetime CN202064867U (en) | 2011-04-22 | 2011-04-22 | Strongly magnetic special tool for fishing balls in oil-gas well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202064867U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089229A (en) * | 2012-11-26 | 2013-05-08 | 慕武 | Acid fracturing pipe column ball seat capable of fishing and being used repeatedly |
| CN111894475A (en) * | 2020-06-29 | 2020-11-06 | 中国石油天然气股份有限公司西南油气田分公司工程技术研究院 | Snakelike weight bar |
| CN115874967A (en) * | 2021-09-28 | 2023-03-31 | 中国石油天然气集团有限公司 | Downhole ball fishing device and ball fishing system |
-
2011
- 2011-04-22 CN CN2011201200539U patent/CN202064867U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089229A (en) * | 2012-11-26 | 2013-05-08 | 慕武 | Acid fracturing pipe column ball seat capable of fishing and being used repeatedly |
| CN103089229B (en) * | 2012-11-26 | 2016-08-24 | 慕武 | Can acid fracturing pipe column ball seat capable of fishing and being used repeatedly |
| CN111894475A (en) * | 2020-06-29 | 2020-11-06 | 中国石油天然气股份有限公司西南油气田分公司工程技术研究院 | Snakelike weight bar |
| CN111894475B (en) * | 2020-06-29 | 2022-07-29 | 中国石油天然气股份有限公司西南油气田分公司工程技术研究院 | Snakelike weight bar |
| CN115874967A (en) * | 2021-09-28 | 2023-03-31 | 中国石油天然气集团有限公司 | Downhole ball fishing device and ball fishing system |
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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: 20111207 |