CN105178902A - Lifting type fishing tool - Google Patents
Lifting type fishing tool Download PDFInfo
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- CN105178902A CN105178902A CN201510473673.3A CN201510473673A CN105178902A CN 105178902 A CN105178902 A CN 105178902A CN 201510473673 A CN201510473673 A CN 201510473673A CN 105178902 A CN105178902 A CN 105178902A
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- lifting
- described lifting
- fishing tool
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- type fishing
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Abstract
The invention provides a lifting type fishing tool. The lifting type fishing tool comprises an outer cylinder, an inner cylinder, a lifting cylinder, a lifting piece, a magnetic core and a self-sealing part, wherein the outer cylinder sleeves the inner cylinder; an annular runner is formed between the outer cylinder and the inner cylinder; the lifting cylinder is axially arranged in an inner cavity of the inner cylinder; a lifting cavity is formed in the lifting cylinder; the annular runner extends to the bottom of the lifting cavity, and is communicated with the lifting cavity; the lifting piece is inserted in the lifting cavity in an axial sliding manner; the magnetic core can absorb an underground dropping object, and is connected with the lifting piece; and the self-sealing part is connected below the outer cylinder, and can be gathered through pressing. The magnetic core is arranged to absorb the underground magnetic dropping object; the lifting cylinder and the lifting piece are arranged to lift the magnetic core and the absorbed underground dropping object; after the magnetic core and the underground dropping object are lifted into the inner cavity of the inner cylinder, a fishing pipe column can be downwards pressed to gather and self-seal the self-sealing part; underground dropping objects not be absorbed are captured, secondary dropping of the fished underground dropping object can be prevented; and the magnetic core is not damaged in downward pressing.
Description
Technical field
The present invention relates to oil drilling fishing operation field, especially a kind of have the lifting type fishing tool that magnetic force salvages function and self-sealing function.
Background technology
In oil drilling process, owing to lacking the conscious understanding to subsurface structure, lithological characteristic, in addition human operational error, often cause down-hole complex accident, wherein, it is a kind of down-hole complex accident more common at present that the small articles such as gear wheel, ball bearing, tooth drop in well, underground fishing operation must be carried out, and all pull out and just can carry out normal wellbore construction operation afterwards, light then at substantial human and material resources and financial resources, heavy then secondary complex accident can be caused, cause part well section even the scrapping of full well, bring massive losses to whole drilling operation.
At present, the special tools such as the instrument that down-hole small articles salvages mainly comprises strong magnetic die, tackles all problems at once, junk basket with reverse circulation, junk mill are usually used in.Strong magnetic die mainly utilize itself with permanent magnet to trouble of lost tool in hole carry out magnetization absorption, thus realize small falling object salvage; Tackling all problems at once is be made up of one section of low carbon steel pipe, and one end of steel pipe is cut into tooth pawl, catches for junk; Junk basket with reverse circulation utilizes drilling fluid to mince in income hoop in the local reverse-circulation effect near shaft bottom place by down-hole, purification shaft bottom; Junk mill is then rely on having of its surface overlaying directly to be ground by trouble of lost tool in hole from the graininess carbide alloy of whetstone effect.
Although above-mentioned fishing tool has possessed certain salvaging ability at present, its on-the-spot effect of salvaging is unsatisfactory, still needs further improvement perfect.Such as, strong magnetic die is transferred to shaft bottom, and when there being the pressure of the drill, non-rotatable drilling tool is with anti-tamper magnetic core, and meanwhile, when pulling out of hole, rotating disk shackle not allowable is de-to prevent junk to get rid of; Tackle all problems at once and be limited to its working mechanism, be usually only limited to shallow well operation, in addition, require that shaft bottom can not be too soft, otherwise pawl cannot be bent, thus middle junk cannot be dragged for; There is basket pawl and break in advance, salvage the defects such as efficiency is low in junk basket with reverse circulation; Junk mill milling process is consuming time long, affects overall progress.
Given this, be necessary to design a kind of novel fishing tool.
Summary of the invention
The object of this invention is to provide a kind of lifting type fishing tool, it has magnetic force concurrently and salvages function and self-sealing function.
For achieving the above object, the present invention proposes a kind of lifting type fishing tool, and a kind of lifting type fishing tool, is characterized in that, described lifting type fishing tool comprises: outer cylinder body; Inner barrel, is set in described outer cylinder body, forms annular channel between described outer cylinder body and described inner barrel; Lifting cylindrical shell, is located in the inner chamber of described inner barrel vertically, has lifting chamber in described lifting cylindrical shell, and described annular channel to extend to bottom described lifting chamber and is communicated with described lifting chamber; Lifting member, can be arranged in described lifting chamber axially slidably; The magnetic core of trouble of lost tool in hole can be adsorbed, be connected with described lifting member; Self-styled parts, are connected to below described outer cylinder body, and draw in by pressurized.
Lifting type fishing tool as above, wherein, described annular channel comprises annular vertically section and the annular horizontal section extended radially inwardly along described outer cylinder body, described lifting chamber is positioned at above described annular horizontal section, and described annular channel and described lifting chamber form opening up U-shaped runner.
Lifting type fishing tool as above, wherein, described lifting cylindrical shell is pillar buoy, and described lifting chamber is cylinder chamber, and described lifting member is shaft-like in what coordinate with described lifting chamber.
Lifting type fishing tool as above, wherein, the quantity of described lifting cylindrical shell and described lifting member is multiple, and multiple described lifting cylindrical shell is arranged in inside described inner barrel ringwise, and multiple described lifting member is arranged in corresponding described lifting cylindrical shell respectively.
Lifting type fishing tool as above, wherein, described lifting cylindrical shell comprises lifting overcoat and is sheathed on the lifting inner sleeve in described lifting overcoat, and form described lifting chamber between described lifting overcoat and described lifting inner sleeve, described lifting chamber and described lifting member are all ringwise.
Lifting type fishing tool as above, wherein, the upper end sidewall of described lifting cylindrical shell runs through the relief hole had with the inner space of described inner barrel.
Lifting type fishing tool as above, wherein, described lifting member bottom is fixed with seal head, and the internal face of described seal head and described lifting cylindrical shell seals fits.
Lifting type fishing tool as above, wherein, described lifting type fishing tool also comprises the lifting pressing plate be located at above described lifting cylindrical shell, and described lifting member and described magnetic core are all connected to below described lifting pressing plate, and described magnetic core is positioned at inside described lifting member.
Lifting type fishing tool as above, wherein, described self-styled parts are claw-like.
Lifting type fishing tool as above, wherein, described inner barrel top is provided with the ball seat for setting.
Feature and the advantage of lifting type fishing tool of the present invention are:
1, lifting type fishing tool of the present invention, the magnetic junk of down-hole is adsorbed by arranging magnetic core, the trouble of lost tool in hole of lifting magnetic core and absorption is carried out by arranging lifting cylindrical shell and lifting member, magnetic core and trouble of lost tool in hole are lifted to after in the inner chamber of inner barrel, fishing string can be pressed down and make the gathering of self-styled parts self-styled, fish for not by the trouble of lost tool in hole adsorbed, and prevent the trouble of lost tool in hole secondary salvaged from dropping, can not damage magnetic core when pressing down, safe and reliable, salvaging efficiency is high.
2, lifting type fishing tool structure of the present invention is simple, easy to operate.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the present invention and explain, not delimit the scope of the invention.Wherein:
Fig. 1 is the sectional view of one embodiment of the present of invention.
Fig. 2 is the schematic diagram of the lifting state of lifting type fishing tool in Fig. 1;
Fig. 3 is the combination schematic diagram of outer cylinder body and inner barrel in Fig. 1;
Fig. 4 is the combination schematic diagram of outer cylinder body in Fig. 1, inner barrel and lifting cylindrical shell;
Fig. 5 is the sectional view along A-A line in Fig. 4;
Fig. 6 is the combination schematic diagram of lifting member in Fig. 1, magnetic core and lifting pressing plate;
Fig. 7 is the upward view of combiner in Fig. 6;
Fig. 8 is the schematic diagram of self-styled parts;
Fig. 9 is the sectional view along B-B line in Fig. 8;
Figure 10 is the combination schematic diagram of outer cylinder body in an alternative embodiment of the invention, inner barrel and lifting cylindrical shell.
Critical element label declaration:
1 outer cylinder body 11 annular channel
2 inner barrel 21 ball seat 22 steel balls
3 lifting cylindrical shell 31 lifting chamber 32 relief holes
4 lifting member 5 magnetic core 6 lifting pressing plates
7 self-styled parts 8 top connections
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present invention, object and effect, now contrast accompanying drawing and the specific embodiment of the present invention is described.
As shown in Figure 1 and Figure 2, for the schematic diagram of first embodiment of lifting type fishing tool of the present invention, this lifting type fishing tool comprises outer cylinder body 1, inner barrel 2, lifting cylindrical shell 3, lifting member 4, the magnetic core 5 that can adsorb trouble of lost tool in hole, self-styled parts 7 and top connection 8.Inner barrel 2 is socketed in outer cylinder body 1, forms annular channel 11 between outer cylinder body 1 and inner barrel 2; Lifting cylindrical shell 3 is located in the inner chamber of inner barrel 1 along the axis of inner barrel, has lifting chamber 31 in lifting cylindrical shell 3, and annular channel 11 to extend to bottom lifting chamber 31 and is communicated with lifting chamber 11; Lifting member 4 can be arranged in lifting chamber 11 axially slidably, and seals with the sidewall in lifting chamber 31 and fit, and thus injecting fluid in annular channel 11 can upwards ejection lifting member 4 after entering lifting chamber 31;
Magnetic core 5 is such as in shaft-like or strip, be preferably strong magnetic magnetic core, magnetic core 5 is arranged in the inner chamber of inner barrel, and the upper end of magnetic core 5 is the link be connected with lifting member 4, can move up with lifting member, the lower end of magnetic core 5 is the absorption end that can adsorb down-hole magnetic junk; Self-styled parts 7 are connected to below outer cylinder body 1, and draw in by pressurized, and self-styled parts 7 are positioned at below magnetic core, and surround magnetic core, and magnetic core is positioned at self-styled part innerside in other words.Be lifted to after above self-styled parts 7 at the magnetic core 5 being adsorbed with magnetic junk, applying the pressure of the drill by ground makes self-styled parts pressurized draw in self-styled to the axis direction of inner barrel, non magnetic junk is fished on the one hand by drawing in, also can prevent trouble of lost tool in hole secondary from dropping on the other hand, in addition, because magnetic core 5 has been lifted to above self-styled parts 7, when applying the pressure of the drill, magnetic core can not be damaged, salvaging efficiency is high, safe and reliable.
Specifically, as shown in Figure 3, the longitudinal section of outer cylinder body 1 is L-shaped, the longitudinal section of inner barrel 2 is L-shaped, enclose by outer cylinder body 1 and inner barrel 2 annular channel 11 formed and comprise annular vertically section and the annular horizontal section extended radially inwardly along outer cylinder body 1, lifting chamber 31 is positioned at above annular horizontal section, and annular channel 11 and lifting chamber 31 form opening up U-shaped runner.
As shown in Figures 4 to 7, in the present embodiment, lifting cylindrical shell 3 is pillar buoy, and lifting chamber 31 is cylinder chamber, and lifting member 4 is in the rod-like structure coordinated with lifting chamber 31.The horizontal segment of inner barrel is connected with the horizontal segment of outer cylinder body, thus is fixed the position of inner barrel, and the lifting cylindrical shell 3 of cylindricality is such as fixed by a pin to above the horizontal segment of inner barrel and the horizontal segment of outer cylinder body, and is tightly connected with inner barrel and outer cylinder body.
Wherein, the quantity of lifting cylindrical shell 3 and lifting member 4 is multiple, and multiple lifting cylindrical shell 3 is arranged in inside inner barrel 2 ringwise, and multiple lifting member 4 is arranged in corresponding lifting cylindrical shell 3 respectively.Preferably, multiple lifting cylindrical shell 3 interval is arranged, and multiple lifting member 4 also interval is arranged.
As shown in Figure 6, Figure 7, lifting type fishing tool also comprises the lifting pressing plate 6 be located at above lifting cylindrical shell 3, and lifting member 4 and magnetic core 5 are all connected to below lifting pressing plate 6, and magnetic core 5 is positioned at inside lifting member 4, so that absorption trouble of lost tool in hole.In the present embodiment, lifting member 4 circular array below lifting pressing plate 6, and is enclosed in outside magnetic core 5, and magnetic core 5 also can be multiple, and ringwise, be spaced, to increase adsorption area, realize effectively adsorb.
In the embodiment shown in fig. 1, inner barrel 2 top is provided with the ball seat 21 for setting, to set alter central core of circulation by pitching, after dropping into steel ball 22 by ground to down-hole, steel ball 22 sets on ball seat 21, thus the pit shaft inner chamber above the inner chamber of inner barrel 3 and inner barrel 3 is cut off, fluid (as drilling fluid) all enters in annular channel 11.
Wherein, the upper end sidewall of lifting cylindrical shell 3 runs through the relief hole 32 had with the inner space of inner barrel 2, time above lifting member 4 moves to relief hole 32, the fluid entered in lifting chamber 31 by annular channel 11 is just flowed out by relief hole 32, fluid enters shaft bottom, recovers circulation.
In addition, lifting member 4 bottom is fixed with seal head 41, seal head 41 seals with the internal face of lifting cylindrical shell 3 and fits, thus, when seal head 41 is positioned at below relief hole 32, the lifting chamber 31 be positioned at below seal head 41 is the chamber that builds the pressure, after fluid enters this chamber that builds the pressure by annular channel 11, lifting member 4 can be promoted move up, time above seal head 41 moves to relief hole 32, the lifting chamber 31 be positioned at below seal head 41 is pressure-releasing chamber, and fluid can flow in the inner chamber of inner barrel via pressure-releasing chamber, relief hole, flow into shaft bottom again, re-establish down-hole circulation.In addition, also pad can be set between seal head and lifting member or bottom seal head.Lifting type fishing tool of the present invention, the sealing realizing lifting cavity fluid by seal head and pad builds the pressure, and being built the pressure by Fluid Sealing is realized magnetic core and the lifting of junk of catching, and structure is simple, convenient operation.
As shown in Figure 8, Figure 9, self-styled parts 7 in claw-like, such as, are tooth pawl, non-vertical structure when tooth pawl manufactures shaping, but the angle of holding together in having, and this angle is such as 2 ° ~ 3 °, thus by rotating, pressurizeing, complete salvaging and the self-sealing function of tooth pawl.
Again as shown in Figure 1, top connection 8 is the link of outer cylinder body 1 and fishing string, the two ends of top connection 8 are equipped with screw thread, the upper end of top connection connects fishing string, the lower end of top connection connects salvages cylindrical shell, i.e. outer cylinder body and inner barrel, is connected to above outer cylinder body 1, and the inner chamber of top connection 8 is communicated with annular channel 11.
When adopting lifting type fishing tool of the present invention to salvage trouble of lost tool in hole, first, top connection 8 be connected with fishing string, by under a whole set of tubing string together lower going-into-well, when lifting type fishing tool is down to distance 0.5 meter of, shaft bottom, turn on pump circulates, at the bottom of flushing manhole.After flushing, continue to transfer lifting type fishing tool to shaft bottom place, now magnetic core 5 can adsorb the magnetic junk of down-hole; Then, steel ball 22 is dropped into by ground, steel ball 22 sets in ball seat 21, in pit shaft, fluid is injected by well head, because steel ball sets in ball seat, fluid all enters the annular channel 11 between inner barrel 2 and outer cylinder body 1, and then enter in lifting chamber 31, along with the lasting injection of fluid, in lifting chamber 31, pressure raises, thus applies a lifting force upwards to lifting member 4, and lifting member 4 promotes lifting pressing plate 6 and moves up, lifting pressing plate 6 drives magnetic core 5 up, and then it is inner the junk of absorption to be promoted to inner barrel 2.When above seal head 41 is increased to relief hole 32, relief hole 32 is opened, and fluid is flowed out by relief hole 32 and enters in the inner chamber of inner barrel, then flows into shaft bottom, recovers circulation.Now, because magnetic core 5 goes upward to above tooth pawl, can apply the pressure of the drill by ground to fishing string, such as, rotate and press down drilling tool or fishing string, tooth pawl fishes for non magnetic junk and pressurized inside cylindrical shell axis direction draws in self-styled, complete the pressing down of tooth pawl, draw in, backing, thus the backing completed trouble of lost tool in hole, trouble of lost tool in hole can not drop again, so far, fishing terminates, and above carries drilling tool or fishing string.
As shown in Figure 10, in the second embodiment, lifting cylindrical shell 3 comprises lifting overcoat and is sheathed on the lifting inner sleeve in lifting overcoat, the horizontal segment of lifting overcoat and outer cylinder body 1 is tightly connected, the horizontal segment of lifting inner sleeve and inner barrel 2 is tightly connected, form lifting chamber 31 between lifting overcoat and lifting inner sleeve, lifting chamber 31 and lifting member 4 are all ringwise.Wherein, the top of lifting overcoat is also connected with the top of lifting inner sleeve, thus the position of inner barrel is fixed, or other modes also can be adopted to be fixed the position of inner barrel, the connecting rod that two ends are connected with inner barrel with outer cylinder body respectively is such as set in annular channel, only otherwise hinder flowing freely of fluid.Other structures, the operating principle of present embodiment are identical with first embodiment with beneficial effect, do not repeat them here.
Lifting type fishing tool of the present invention, effectively compensate for existing strong magnetic die behind shaft bottom when there being the pressure of the drill non-rotatable deficiency, overcome existing tackling all problems at once and be only limited to shallow well and require that shaft bottom possesses the defect of certain degree of hardness.Compared with existing fishing tool, lifting type fishing tool of the present invention has both following characteristics: (1) possesses magnetic force, the dual salvaging function of tooth pawl; (2) magnetic core is possessed from lifting function; (3) by pressurization, rotary manipulation, non magnetic trouble of lost tool in hole is salvaged; (4) possess self-sealing function, the junk salvaged in inner barrel can be held, prevent secondary from dropping.
The foregoing is only the schematic detailed description of the invention of the present invention, and be not used to limit scope of the present invention.Any those skilled in the art, the equivalent variations done under the prerequisite not departing from design of the present invention and principle and amendment, all should belong to the scope of protection of the invention.And it should be noted that, each ingredient of the present invention is not limited in above-mentioned overall applicability, the each technical characteristic described in manual of the present invention can select one to adopt separately or select the multinomial use that combines according to actual needs, therefore, the present invention covers other relevant with this case inventive point in the nature of things and combines and embody rule.
Claims (10)
1. a lifting type fishing tool, is characterized in that, described lifting type fishing tool comprises:
Outer cylinder body;
Inner barrel, is set in described outer cylinder body, forms annular channel between described outer cylinder body and described inner barrel;
Lifting cylindrical shell, is located in the inner chamber of described inner barrel vertically, has lifting chamber in described lifting cylindrical shell, and described annular channel to extend to bottom described lifting chamber and is communicated with described lifting chamber;
Lifting member, can be arranged in described lifting chamber axially slidably;
The magnetic core of trouble of lost tool in hole can be adsorbed, be connected with described lifting member;
Self-styled parts, are connected to below described outer cylinder body, and draw in by pressurized.
2. lifting type fishing tool as claimed in claim 1, it is characterized in that, described annular channel comprises annular vertically section and the annular horizontal section extended radially inwardly along described outer cylinder body, described lifting chamber is positioned at above described annular horizontal section, and described annular channel and described lifting chamber form opening up U-shaped runner.
3. lifting type fishing tool as claimed in claim 1, it is characterized in that, described lifting cylindrical shell is pillar buoy, and described lifting chamber is cylinder chamber, and described lifting member is shaft-like in what coordinate with described lifting chamber.
4. lifting type fishing tool as claimed in claim 3, it is characterized in that, the quantity of described lifting cylindrical shell and described lifting member is multiple, and multiple described lifting cylindrical shell is arranged in inside described inner barrel ringwise, and multiple described lifting member is arranged in corresponding described lifting cylindrical shell respectively.
5. lifting type fishing tool as claimed in claim 1, it is characterized in that, described lifting cylindrical shell comprises lifting overcoat and is sheathed on the lifting inner sleeve in described lifting overcoat, and form described lifting chamber between described lifting overcoat and described lifting inner sleeve, described lifting chamber and described lifting member are all ringwise.
6. lifting type fishing tool as claimed in claim 1, is characterized in that, the upper end sidewall of described lifting cylindrical shell runs through the relief hole had with the inner space of described inner barrel.
7. lifting type fishing tool as claimed in claim 1, it is characterized in that, described lifting member bottom is fixed with seal head, and the internal face of described seal head and described lifting cylindrical shell seals fits.
8. lifting type fishing tool as claimed in claim 1, it is characterized in that, described lifting type fishing tool also comprises the lifting pressing plate be located at above described lifting cylindrical shell, and described lifting member and described magnetic core are all connected to below described lifting pressing plate, and described magnetic core is positioned at inside described lifting member.
9. lifting type fishing tool as claimed in claim 1, it is characterized in that, described self-styled parts are claw-like.
10. lifting type fishing tool as claimed in claim 1, it is characterized in that, described inner barrel top is provided with the ball seat for setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510473673.3A CN105178902B (en) | 2015-08-05 | 2015-08-05 | A kind of lifting type fishing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510473673.3A CN105178902B (en) | 2015-08-05 | 2015-08-05 | A kind of lifting type fishing tool |
Publications (2)
| Publication Number | Publication Date |
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| CN105178902A true CN105178902A (en) | 2015-12-23 |
| CN105178902B CN105178902B (en) | 2018-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510473673.3A Active CN105178902B (en) | 2015-08-05 | 2015-08-05 | A kind of lifting type fishing tool |
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| CN (1) | CN105178902B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105840125A (en) * | 2016-06-13 | 2016-08-10 | 新疆如通石油技术服务有限公司 | Controllable reverse circulation structure |
| CN105863542A (en) * | 2016-05-05 | 2016-08-17 | 中盐金坛盐化有限责任公司 | In-wellbore fishing tool for salt well blocking improvement |
| CN111305783A (en) * | 2019-11-18 | 2020-06-19 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Fishing device and fishing method for underground junk |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105863542A (en) * | 2016-05-05 | 2016-08-17 | 中盐金坛盐化有限责任公司 | In-wellbore fishing tool for salt well blocking improvement |
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| CN111305783A (en) * | 2019-11-18 | 2020-06-19 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Fishing device and fishing method for underground junk |
| CN111305783B (en) * | 2019-11-18 | 2023-09-26 | 中国石油天然气集团有限公司 | Underground junk salvaging device and salvaging method |
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| Publication number | Publication date |
|---|---|
| CN105178902B (en) | 2018-01-05 |
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