CN203383765U - Internal fishing tube strong magnetic fisher - Google Patents
Internal fishing tube strong magnetic fisher Download PDFInfo
- Publication number
- CN203383765U CN203383765U CN201320492216.5U CN201320492216U CN203383765U CN 203383765 U CN203383765 U CN 203383765U CN 201320492216 U CN201320492216 U CN 201320492216U CN 203383765 U CN203383765 U CN 203383765U
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- Prior art keywords
- strong magnetic
- sleeve
- magnet
- dipper
- valve structure
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Abstract
The utility model relates to an internal fishing tube strong magnetic fisher which comprises a magnet unit of a hollow structure and a one-way valve structure which is arranged above the magnet unit and only opened upwards. A valve opening in the lower end of the one-way valve structure is communicated with the hollow structure, a pipe body is communicated with a valve opening in the upper end of the one-way valve structure, a liquid outlet hole which penetrates through a pipe wall is formed in the pipe body, the liquid outlet hole is communicated with a check valve structure which only allows inverse well-flushing liquid to flow and pass through from the inside of the pipe body to the outside of the pipe body and stops the liquid from flowing and passing through from the outside of the pipe body to the inside of the pipe body, and the check valve structure is provided with an elastic check part used for stopping the check valve structure from being opened in the process of inverse well flushing and has set elastic force. The internal fishing tube strong magnetic fisher can flush all metal sundries into the magnetic unit in the process of inverse well flushing.
Description
Technical field
The utility model relates to interior dipper strong magnetic die.
Background technology
In the oil-water well workover treatment, often there will be some metal sundries in pit shaft, the irregular slips fragment that for example adopts the bridging plug fracturing technology to produce; along with the flushing of current is scattered in pit shaft; cause follow-up lower well tool to be hampered, can't to pass through, affected construction, increased construction cost.Generally can use strong magnetic die while in prior art, clearing up metal sundries, the disclosed a kind of strong magnetic die of Chinese patent that for example application number is 201220301733.5, notification number is CN202645487U, comprise open column shape fishing socket, be arranged on the magnet unit on the inwall of fishing socket end portion, enter in fishing socket under the liquid stream effect that during use, metal sundries can produce when the anti-flushing well operation and be adsorbed on the fishing socket inboard by magnet unit and accumulate, taken out of outside well with strong magnetic die when final strong magnetic die promotes.But, when this strong magnetic die is raised, the liquid in fishing socket can flow out and formation liquid stream downwards, metal sundries will be subject to the impact of liquid stream and partly come off from the fishing socket inwall, come back in pit shaft, therefore, use this strong magnetic die efficiency low, salvage weak effect.
In addition, the Chinese patent that notification number is CN2120877U discloses a kind of permanent-magnet fishing tool, the fishing socket that comprises equally open column shape, be arranged on the magnet unit on the inwall of fishing socket end portion, but, be provided with the valve seat that opening upwards enlarges in centre bore in this fishing tool in the top of magnet unit, valve seat is provided with corresponding spheroid and forms with valve seat the one way valve that stops liquid to flow to lower outflow, and run through the fluid hole that is provided with the pit shaft that is communicated with centre bore and fishing socket outside on the fishing socket barrel of valve seat top, like this, when fishing tool is raised, liquid in fishing socket will flow out fishing socket from fluid hole, and can not flow through from the magnet unit in centre bore, can not produce and impact the metal sundries at this place, can not cause metal sundries to come off yet.But, salvage efficiency and improve effect for improving, current fishing often coordinates anti-flushing well to carry out, and the fluid hole of above-mentioned permanent-magnet fishing tool is communicated with the pit shaft of centre bore and fishing socket outside always, if utilize it to carry out anti-flushing well, large quantity of fluid in pit shaft will directly enter in the centre bore of fishing socket magnet unit top from fluid hole, and the impact force of fishing socket lower end liquid stream is weakened, can not effectively metal sundries be poured to magnet unit, and likely cause that metal sundries is stuck damages fishing tool at fluid hole, cause the anti-flushing well operation normally to carry out.
The utility model content
The purpose of this utility model is to provide and a kind ofly can metal sundries be all poured to the interior dipper strong magnetic die of magnet unit when anti-flushing well.
The technical scheme that in the utility model, the dipper strong magnetic die adopts is: interior dipper strong magnetic die, the magnet unit that comprises hollow structure, the one-way valve structures that is arranged on the magnet unit top and only upwardly opens, the lower end valve port of one-way valve structures is communicated with hollow structure, the upper end valve port is communicated with body, described body is provided with the fluid hole that runs through tube wall, described fluid hole is communicated with and only allows liquid that anti-flushing well uses by flowing by stoping liquid by the check valve structure flowed through in body outside body outside body in body, described check valve structure has and is provided with for stoping the elasticity retaining element of the setting elastic force that described check valve structure opens when the anti-flushing well.
Described check valve structure comprises the sleeve that corresponding fluid hole is set on body and an end coordinates with the outer surface of tube body slipper seal, described interior dipper strong magnetic die is provided with the valve seat that seals described fluid hole for the other end top means of press seals with sleeve coordinates, be provided with annular gap between described sleeve and body, described elasticity retaining element provides check spring towards the active force of described valve seat motion for sleeve for being in transmission connection on described sleeve.
Described magnet unit be the annular magnet that arranged by outer sleeve, outer peripheral face and the laminating of described outer sleeve inwall, and the laminating neck bush that is arranged on the inwall of described annular magnet form, described annular magnet is the radially-arranged annular magnet of magnetic pole along neck bush.
Described neck bush is to be made by the non-magnetic rustproof Steel material of magnetic conduction.
Described annular magnet is that the multi-layer annular magnet piece splicing layout of arranging by joining up and down forms, and each layer of annular magnetic iron block is by polylith sector magnet iron block circumferentially being spliced around neck bush.
The lower end of described outer sleeve is provided with annular magnet and the neck bush spacing baffle ring of block that makes progress, and the internal face of described baffle ring has the structure that upwards closes up and upper surface and protrudes neck bush and be configured for stopping the barb that the metal sundries of baffle ring top comes off.
Described baffle ring is to be made by the non-magnetic rustproof Steel material of magnetic conduction.
Described one-way valve structures has ball seat and the spheroid for being sealed and matched with ball seat, and on described spheroid, top is installed with to be equipped with to spheroid and applies the spring towards the active force of ball seat.
Be provided with sieve plate between described magnet unit and described one-way valve structures, offer the through hole for the metal sundries of the filter bulk of combing on described sieve plate.
Adopt the technical scheme in the utility model, described fluid hole is communicated with and only allows liquid that anti-flushing well uses by flowing by stoping liquid by the check valve structure flowed through in body outside body outside body in body, and described check valve structure has and is provided with for stoping the elasticity retaining element of the setting elastic force that described check valve structure opens when the anti-flushing well.When anti-flushing well, force value is less than the setting value of elasticity retaining element, effect due to the elasticity retaining element, check valve structure will be closed and be stoped liquid to flow through in body by body is outer, guarantee that liquid flows into from the magnet unit lower ending opening, and drive metal sundries and enter from interior dipper strong magnetic die lower end in interior dipper strong magnetic die and further adsorbed by the strong magnet unit, collect better metal sundries, and anti-flushing well finish after in lifting during the dipper strong magnetic die, due to the acting in opposition without flushing fluid, the body internal pressure will reach the setting value of elasticity retaining element, check valve structure is opened, fluid hole is inside and outside by the conducting body, make the flushing fluid in body flow back to pit shaft from the magnet unit top, do not impact metal sundries and can oppositely not flow out by the hollow structure part of strong magnet unit, with respect to prior art, avoided large quantity of fluid directly to enter in the centre bore of fishing socket magnet unit top from fluid hole, strengthened the impact force of fishing socket lower end liquid stream, thereby can effectively metal sundries be poured to magnet unit, dipper strong magnetic die in this can be used in conjunction with anti-flushing well technique, salvage effective, operating efficiency is high.
The accompanying drawing explanation
Fig. 1: the structural representation of dipper strong magnetic die in the utility model;
The A of Fig. 2: Fig. 1-A schematic cross-section.
The name that in figure, each Reference numeral is corresponding is called: 1 magnet unit, 11 outer sleeves, 12 annular magnets, 121 annular magnetic iron blocks, 13 neck bush, 14 card type sieve plates, 141 well-flushing ducts, 15 baffle rings, 151 barbs, 16 salvage chamber, 2 one way valves, 21 ball seats, 22 spheroids, 23 springs, 24 valve seats, 3 bodys, 31 fluid holes, 4 sleeves, 41 packing holders, 42 sealing rings, 5 annular gaps, 6 check springs.
The specific embodiment
In the utility model, an embodiment of dipper strong magnetic die is as shown in Fig. 1 ~ Fig. 2, and interior dipper strong magnetic die, comprise the magnet unit 1 with hollow structure, the one way valve only upwardly opened 2 that is arranged on magnet unit 1 top.Magnet unit 1 upper end is provided with internal thread hole, one way valve 2 is provided with ball seat 21 and is spirally connected and is fixed in internal thread hole by ball seat 21, its lower end valve port is communicated with hollow structure, the upper end valve port is bolted and fixed with body 3 and be communicated with body 3, and described body 3 is provided with the fluid hole 31 that runs through tube wall.
The corresponding spheroid 22 be provided with for being sealed and matched with ball seat 21 on the ball seat 21 of described one way valve 2, be provided with the sieve plate with the through hole passed through for flushing fluid in body 3 in fluid hole 31 belows, between sieve plate and spheroid 22, top is installed with oriented spheroid 22 and applies the spring 23 towards the active force of ball seat 21.
Described fluid hole 31 is communicated with and only allows liquid that anti-flushing well uses by flowing by the check valve structure that stops liquid to flow through in body 3 outside by body 3 towards body 3 is outer in body 3, and described check valve structure has and is provided with for stoping the elasticity retaining element of the setting elastic force that described check valve structure opens when the anti-flushing well.In the present embodiment, described check valve structure comprises the sheathed sleeve 4 of corresponding fluid hole 31 on body 3, be provided with annular gap 5 between sleeve 4 and body 3, one end of sleeve 4 is provided with packing holder 41 and coordinates with the tank body slipper seal by sealing ring 42, the other end of sleeve 4 is divided edge structure, the cylindrical upper end of the ball seat 21 of described one way valve 2 is provided with tiltedly drapes over one's shoulders and forms valve seat 24, seals described fluid hole 31 for the divided edge structure top means of press seals with on sleeve 4 coordinates.The periphery of body 3 upper ends is provided with step and forms downward shoulder, between the upper surface of shoulder and sleeve 4, top is installed with and is equipped with the check spring 6 that the active force moved towards described valve seat 24 is provided for sleeve 4, as the elasticity retaining element of check valve structure, the elastic force of check spring 6 is according to stoping described check valve structure to open setting when the anti-flushing well.
Described magnet unit 1 be the annular magnet 12 that arranged by outer sleeve 11, outer peripheral face and the 11 inwalls laminatings of described outer sleeve, and the laminating neck bush 13 that is arranged on the inwall of described annular magnet 12 form, described annular magnet 12 is magnetic pole radially-arranged annular magnets 12 along neck bush 13.The internal face of outer sleeve 11 is provided with step and forms downward shoulder, between shoulder and annular magnet 12, pad is provided with card type sieve plate 14, offer the through hole for the metal sundries of the filter bulk of combing on card type sieve plate 14, form the well-flushing duct 141 of passing through for flushing fluid simultaneously.Card type sieve plate 14, outer sleeve 11, neck bush 13 and baffle ring 15 are enclosed in an enclosure space by annular magnet 12, can prevent that annular magnet 12 from coming off, and it is played a protective role, and safety is good.Described annular magnet 12 is that seven layers of annular magnetic iron block, the 121 splicing layouts of arranging by joining up and down form, each layer of annular magnetic iron block 121 is by eight sector magnet iron blocks 121 circumferentially being spliced around neck bush 13, certainly, in other embodiments, the form of annular magnet 12 also can replace to other forms.The lower end of described outer sleeve 11 is provided with annular magnet 12 and the neck bush 13 spacing baffle ring 15 of block upwards, and the internal face of described baffle ring 15 has the structure that upwards closes up and upper surface and protrudes neck bush 13 and be configured for stopping the barb 151 that the metal sundries of baffle ring 15 tops comes off.Described neck bush 13 and baffle ring 15 are all to be made by the non-magnetic rustproof Steel material of magnetic conduction, not every magnetic, intensity meets the demands, do not affect the attraction of magnet, can attract distant metal sundries, under the cooperation of anti-flushing well technique, can at an easy rate metal sundries be attracted in the past, to salvage effective.
During use, above-mentioned interior dipper strong magnetic die is connected to the tubing string lower end, and transferred in pit shaft by tubing string, while transferring the tubing string anti-flushing well, liquid stream injects from the annular space between sleeve pipe and pit shaft, effect due to check spring 6, check valve structure is in closed condition, liquid stream enters from interior dipper strong magnetic die bottom, through salvaging chamber 16, well-flushing duct 141 on card type sieve plate 14 enters the endoporus of ball seat 21, liquid stream backs down spheroid 22 and Compress Spring 23 is opened one way valve 2, enter again the internal channel of body 3 through the through hole on sieve plate, then turn back to ground, complete the circulation of liquid stream.In the cyclic process of liquid stream, the metal sundries fragments such as slips fragment that liquid stream will be scattered in pit shaft are carried to salvaging chamber 16, the metal sundries of bulk is blocked in and salvages that chamber 16 is interior to be adsorbed on neck bush 13 by the annular magnet 12 in magnet unit by card type sieve plate 14, and the metal sundries of fritter enters body 3 through card type sieve plate 14 and taken out of outside well with liquid stream.The barb 151 protruded on baffle ring 15 can prevent that the metal sundries be adsorbed is because the reasons such as vibrations come off.One of interior dipper strong magnetic die is transferred until behind shaft bottom, anti-flushing well circulation 1-2 hour again, stop anti-flushing well, spheroid 22 is closed under the effect of spring 23, then mention tubing string on, now body 3 inner and outside pressure will act on the upper of packing holder 41, on lower surface, and pressure differential will be higher than the setting value of check spring, the resistance that liquid stream will overcome check spring 6 will push away open described fluid hole 31 then on sleeve 4, the inside of body 3 and annular space will be by fluid holes 31, the annular gap 5 of sleeve 4 between body 3 and the valve port conducting of check valve structure, flushing fluid flows back to pit shaft by fluid hole 31, and can not let out for 16 times by salvaging chamber, can avoid the metal sundries of absorption to come off, can prevent that body 3 from proposing a large amount of excessive the splashing of liquid in rear tubing string simultaneously, thereby improve workman's construction environment.
Certainly, above-described embodiment is only preferred embodiment, the technical solution of the utility model is not limited to above-described embodiment, for example the check valve structure in above-described embodiment is to consist of sleeve 4, valve seat 24 and check spring 6, in other embodiment of the present utility model, check valve structure can also adopt other form, as long as can be only at the pressure of body 3 inside higher than outside pressure open described fluid hole 31 when setting value, for example, arrange along radially outward conducting of body 3 on each liquid outlet and be provided with the one way valve of spring, can realize same effect.In addition, the magnet unit in above-described embodiment also can replace to other forms, two kinds of magnet units for example mentioning in background technology; And the card type sieve plate 14 in the magnet unit of above-described embodiment is nonessential structures, in other embodiment of the present utility model, also can save.
Claims (9)
1. interior dipper strong magnetic die, the magnet unit that comprises hollow structure, the one-way valve structures that is arranged on the magnet unit top and only upwardly opens, the lower end valve port of one-way valve structures is communicated with hollow structure, the upper end valve port is communicated with body, described body is provided with the fluid hole that runs through tube wall, it is characterized in that: described fluid hole is communicated with and only allows liquid that anti-flushing well uses by flowing by stoping liquid by the check valve structure flowed through in body outside body outside body in body, described check valve structure has and is provided with for stoping the elasticity retaining element of the setting elastic force that described check valve structure opens when the anti-flushing well.
2. interior dipper strong magnetic die according to claim 1, it is characterized in that: described check valve structure comprises the sleeve that corresponding fluid hole is set on body and an end coordinates with the outer surface of tube body slipper seal, described interior dipper strong magnetic die is provided with the valve seat that seals described fluid hole for the other end top means of press seals with sleeve coordinates, be provided with annular gap between described sleeve and body, described elasticity retaining element provides check spring towards the active force of described valve seat motion for sleeve for being in transmission connection on described sleeve.
3. interior dipper strong magnetic die according to claim 1 and 2, it is characterized in that: described magnet unit be the annular magnet that arranged by outer sleeve, outer peripheral face and the laminating of described outer sleeve inwall, and the laminating neck bush that is arranged on the inwall of described annular magnet form, described annular magnet is the radially-arranged annular magnet of magnetic pole along neck bush.
4. interior dipper strong magnetic die according to claim 3, it is characterized in that: described neck bush is to be made by the non-magnetic rustproof Steel material of magnetic conduction.
5. interior dipper strong magnetic die according to claim 3, it is characterized in that: described annular magnet is that the multi-layer annular magnet piece splicing layout of arranging by joining up and down forms, and each layer of annular magnetic iron block is by polylith sector magnet iron block circumferentially being spliced around neck bush.
6. interior dipper strong magnetic die according to claim 3, it is characterized in that: the lower end of described outer sleeve is provided with annular magnet and the neck bush spacing baffle ring of block that makes progress, and the internal face of described baffle ring has the structure that upwards closes up and upper surface and protrudes neck bush and be configured for stopping the barb that the metal sundries of baffle ring top comes off.
7. interior dipper strong magnetic die according to claim 6, it is characterized in that: described baffle ring is to be made by the non-magnetic rustproof Steel material of magnetic conduction.
8. interior dipper strong magnetic die according to claim 1 and 2, it is characterized in that: described one-way valve structures has ball seat and the spheroid for being sealed and matched with ball seat, and on described spheroid, top is installed with to be equipped with to spheroid and applies the spring towards the active force of ball seat.
9. interior dipper strong magnetic die according to claim 1 and 2, is characterized in that: be provided with sieve plate between described magnet unit and described one-way valve structures, offer the through hole for the metal sundries of the filter bulk of combing on described sieve plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320492216.5U CN203383765U (en) | 2013-08-13 | 2013-08-13 | Internal fishing tube strong magnetic fisher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320492216.5U CN203383765U (en) | 2013-08-13 | 2013-08-13 | Internal fishing tube strong magnetic fisher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203383765U true CN203383765U (en) | 2014-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320492216.5U Expired - Fee Related CN203383765U (en) | 2013-08-13 | 2013-08-13 | Internal fishing tube strong magnetic fisher |
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| Country | Link |
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| CN (1) | CN203383765U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564028A (en) * | 2014-12-31 | 2015-04-29 | 贝兹维仪器(苏州)有限公司 | Near-bit strong magnet activating instrument with automatic protection function |
| CN107448161A (en) * | 2017-08-23 | 2017-12-08 | 中国石油天然气股份有限公司 | Strong magnetic die and its magnetic block method for arranging |
| CN109736776A (en) * | 2019-01-29 | 2019-05-10 | 中国石油集团川庆钻探工程有限公司 | Oil well test instruments catcher |
-
2013
- 2013-08-13 CN CN201320492216.5U patent/CN203383765U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564028A (en) * | 2014-12-31 | 2015-04-29 | 贝兹维仪器(苏州)有限公司 | Near-bit strong magnet activating instrument with automatic protection function |
| CN107448161A (en) * | 2017-08-23 | 2017-12-08 | 中国石油天然气股份有限公司 | Strong magnetic die and its magnetic block method for arranging |
| CN109736776A (en) * | 2019-01-29 | 2019-05-10 | 中国石油集团川庆钻探工程有限公司 | Oil well test instruments catcher |
| CN109736776B (en) * | 2019-01-29 | 2023-10-13 | 中国石油集团川庆钻探工程有限公司 | Trap for well testing instrument |
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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: 20140108 Termination date: 20190813 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |