CN205370491U - Fishing tool - Google Patents
Fishing tool Download PDFInfo
- Publication number
- CN205370491U CN205370491U CN201521143008.XU CN201521143008U CN205370491U CN 205370491 U CN205370491 U CN 205370491U CN 201521143008 U CN201521143008 U CN 201521143008U CN 205370491 U CN205370491 U CN 205370491U
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- China
- Prior art keywords
- piston
- outer tube
- ratchet
- fishing tool
- spring
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- 238000007789 sealing Methods 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 13
- 239000000463 material Substances 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002301 combined effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Abstract
The utility model discloses a fishing tool belongs to borehole operation instrument field. The fishing tool includes: the outer tube, at least two pawls, piston, spring and with at least two pawls one-to-one corresponding connecting plate, the lower extreme of every pawl inwards buckles into hook-like. The utility model discloses a lower extreme at the outer tube is equipped with two at least pawls, the inside at the outer tube is equipped with the piston, through the relative outer tube axial motion of piston, drive the link plate motion, drive the relative outer tube of every pawl through the link plate and open or withdraw, salvage the in-process of smallclothes, inwards withdraw through two at least pawls, will drop to the smallclothes in shaft bottom and bring into between two at least pawls, and inwards buckle into hook-like through every pawl lower extreme, prevent to promote the in-process smallclothes and drop, and easy operation, it is high to salvage the success rate, and avoid destroying the pawl, make the utility model discloses repeatedly usable reduces the consumption of material.
Description
Technical field
This utility model relates to underground operation tool field, particularly to a kind of fishing tool.
Background technology
In oil-water well operation maintenance process; often there will be staff's imprudence makes the smallclothes such as bolt, nut, steel ball or valve seat fall to the situation in oil-water well shaft bottom; the enforcement of measure is produced owing to smallclothes can restrict oil-water well in shaft bottom; the production of oil-water well can be affected to a certain extent, therefore must be salvaged out when smallclothes fall to shaft bottom.
The smallclothes falling to shaft bottom are salvaged at present usually through tackling all problems at once.The top tackled all problems at once is steel pipe, and bottom is 6～8 sharp pawls that the method cut by gas cutting is cut out in steel pipe bottom, and wherein, the length of point pawl is about 200～300 millimeters.During work, the upper end tackled all problems at once is fixing with fishing string to be connected, and will be tackled all problems at once down to shaft bottom by fishing string, when arriving shaft bottom soon when tackling all problems at once, transfer while rotating fishing string, make to tackle all problems at once slowly descending, when smallclothes enter into after between the sharp pawl tackled all problems at once, apply pressure by fishing string to the upper surface tackled all problems at once, under the combined effect in fishing string and shaft bottom, the sharp pawl tackled all problems at once bends inwards as hook-shaped, it is to avoid smallclothes drop, thus can salvage out by smallclothes.
In realizing process of the present utility model, inventor have found that prior art at least there is problems in that
Due to the restriction of material plasticity, the sharp pawl tackled all problems at once is bent over after once cannot reuse, and must again make again when smallclothes salvaged again by needs and tackle all problems at once, and consumption of materials is bigger；And executing in stressed process by fishing string to point pawl end face; owing to the situation in shaft bottom is complicated; can not each point stress size of pawl of tackling all problems at once of strict guarantee and Impact direction all meet the requirements; usually there will be part point pawl and bending or situation about bending to other directions do not occur; causing salvaging smallclothes difficulty, fishing success ratio is low.
Utility model content
In order to solve to use the consumption of materials that salvaging smallclothes of tackling all problems at once exist relatively big, salvaging the problem that smallclothes are difficult and fishing success ratio is low, this utility model embodiment provides one fishing tool.Described technical scheme is as follows:
A kind of fishing tool, described fishing tool includes: outer tube, at least two ratchet, piston, spring and with described at least two ratchet gusset piece one to one；
The upper end of described outer tube is provided with joint screw thread；
The upper end of each ratchet in described at least two ratchet is flexibly connected with the lower end of described outer tube respectively, and described each ratchet all can open around its described outer tube relative to the junction point of described outer tube or regain, and the lower end of described each ratchet is bent inwardly to hook-shaped；
Described piston is arranged on described outer tube, and the lower end of described piston is stretched out by described outer tube, and described piston can the axially-movable of relatively described outer tube；
Described spring is arranged between described outer tube and described piston, drives described piston upwards by described spring or limits described piston and move downward；
Being flexibly connected with the lower end of described piston with the one end of every piece of gusset piece in described at least two ratchet gusset piece one to one, the other end is flexibly connected with the middle part of described each ratchet；
By the relatively described outer tube axially-movable of described piston, drive described gusset piece to move, drive the relatively described outer tube of described each ratchet open or regain by described gusset piece.
Further, described outer tube includes upper exterior tube and lower outer pipe, and described upper exterior tube is fixing with described lower outer pipe to be connected；
It is provided with first step inside described upper exterior tube, it is provided with second step inside described lower outer pipe, the upper end of described piston is provided with outer lug boss, described outer lug boss is between described first step and described second step, described spring housing is at described piston exterior, and described spring is between described outer lug boss and described second step.
Further, described outer tube is provided with the 3rd step；
Described piston is positioned at below described 3rd step, described spring is arranged between lower plane and the upper surface of described piston of described 3rd step, and one end of described spring is fixing with the lower plane of described 3rd step is connected, the other end is fixed with the upper surface of described piston and is connected.
Further, described piston is provided with piston centre through hole vertically.
Specifically, described fishing tool also includes sealing ring, and described sealing ring is arranged in the annular gap of described piston and the formation of described outer tube wall.
Specifically, the quantity of described at least two ratchet is four, being axially uniformly distributed of four relatively described pistons of ratchet.
Specifically, the lower end outer wall of described outer tube is provided with at least two straight trough vertically, the quantity one_to_one corresponding of the quantity of described at least two straight trough and described at least two ratchet, the upper end of described each ratchet is arranged in corresponding straight trough respectively through the first bolt.
Specifically, the two ends of described every piece of gusset piece are flexibly connected with the middle part of described each ratchet and the lower end of described piston respectively through the second bolt.
The technical scheme that this utility model embodiment provides has the benefit that
This utility model is by being provided with at least two ratchet in the lower end of outer tube, it is provided with piston in the inside of outer tube, by the relative outer tube axially-movable of piston, drive gusset piece moves, the relative outer tube of each ratchet is driven to open or regain by gusset piece, salvage in the process of smallclothes, inwardly regained by least two ratchet, the smallclothes that will fall off to shaft bottom are brought between at least two ratchet, and it is bent inwardly to hook-shaped by each ratchet lower end, prevent smallclothes in lifting process from dropping, simple to operate, fishing success ratio is high, and avoid ratchet is destroyed, make this utility model reusable, reduce the consumption of material.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in this utility model embodiment, below the accompanying drawing used required during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the fishing tool that this utility model one embodiment provides；
Fig. 2 is that the A-A of Fig. 1 is to cross-sectional schematic；
Fig. 3 is the structural representation of the fishing tool that the another embodiment of this utility model provides；
Fig. 4 is that the B-B of Fig. 3 is to cross-sectional schematic.
Wherein:
1 outer tube, 11 upper exterior tubes, 12 lower outer pipes, 13 joint screw threads, 14 first steps, 15 second steps, 16 the 3rd steps, 17 straight troughs,
2 ratchets,
3 pistons, 31 piston centre through holes, 32 outer lug boss,
4 springs,
5 gusset pieces,
6 first bolts,
7 second bolts,
8 sealing rings,
9 annular gaps.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, this utility model embodiment is described in further detail.
As it is shown in figure 1, this utility model embodiment provides a kind of fishing tool, as in figure 2 it is shown, this fishing tool includes: outer tube 1, at least two ratchet 2, piston 3, spring 4 and with at least two ratchet 2 gusset piece 5 one to one；
The upper end of outer tube 1 is provided with joint screw thread 13；
The upper end of each ratchet 2 at least two ratchet 2 is flexibly connected with the lower end of outer tube 1 respectively, and each ratchet 2 all can open around its outer tube 1 relative to the junction point of outer tube 1 or regain, and the lower end of each ratchet 2 is bent inwardly to hook-shaped；
It is internal that piston 3 is arranged on outer tube 1, and the lower end of piston 3 is stretched out by outer tube 1, and piston 3 can the axially-movable of outer tube 1 relatively；
Spring 4 is arranged between outer tube 1 and piston 3, drives piston 3 to move upward by spring 4 or limits piston 3 and moves downward；
Being flexibly connected with the lower end of piston 3 with one end of the every piece of gusset piece 5 at least two ratchet 2 one to one gusset piece 5, the other end is flexibly connected with the middle part of each ratchet 2；
By relative outer tube 1 axially-movable of piston 3, drive gusset piece 5 to move, drive each relative outer tube 1 of ratchet 2 open or regain by gusset piece 5.
When using this utility model to salvage the smallclothes falling to shaft bottom, outer tube 1 is connected by the joint screw thread 13 of its upper end and fishing string are fixing, by fishing string by this utility model down to shaft bottom.Under original state, piston 3 is maintained at upper under the effect of spring 4, and makes each ratchet 2 be in retracted state by the gusset piece 5 corresponding with each ratchet 2, it is ensured that in the process of going into the well, ratchet 2 can bear higher load and be unlikely to deform.nullWhen ratchet 2 touches shaft bottom，Lift up fishing string，Ground connects pump truck，Liquid is injected to outer tube 1 is internal by fishing string，The pressure of liquid acts on piston 3 upper surface，Piston 3 is promoted to overcome the elastic force of spring 4 descending，Piston 3 drives gusset piece 5 to rotate clockwise around the wherein heart，Thus promoting ratchet 2 to be flared out，Now，Slowly transfer fishing string，When ratchet 2 touches shaft bottom again，Ground carries out pressure release，Piston 3 is up under the elastic force effect of spring 4，Inwardly regain thereby through gusset piece 5 band pawl 2，Smallclothes are brought between ratchet 2 by the process that ratchet 2 is regained，Piston 3 returns to upper under the effect of spring 4，Now，Each ratchet 2 is in retracted state，Smallclothes are wrapped in the middle of all ratchets 2，Lift up fishing string，This utility model and smallclothes can be taken out in the lump.
This utility model is by being provided with at least two ratchet 2 in the lower end of outer tube 1, it is provided with piston 3 in the inside of outer tube 1, by relative outer tube 1 axially-movable of piston 3, gusset piece 5 is driven to move, each relative outer tube 1 of ratchet 2 is driven to open or regain by gusset piece 5, salvage in the process of smallclothes, inwardly regained by least two ratchet 2, the smallclothes that will fall off to shaft bottom are brought between at least two ratchet 2, and it is bent inwardly to hook-shaped by each ratchet 2 lower end, prevent smallclothes in lifting process from dropping, simple to operate, fishing success ratio is high, and avoid ratchet 2 is destroyed, make this utility model reusable, reduce the consumption of material.
As in figure 2 it is shown, outer tube 1 includes upper exterior tube 11 and lower outer pipe 12, upper exterior tube 11 is fixing with lower outer pipe 12 to be connected；
Upper exterior tube 11 is internal is provided with first step 14, lower outer pipe 12 is internal is provided with second step 15, and the upper end of piston 3 is provided with outer lug boss 32, and outer lug boss 32 is between first step 14 and second step 15, it is outside that spring 4 is enclosed within piston 3, and spring 4 is between outer lug boss 32 and second step 15.
Wherein, it is fixedly connected as outer tube 1 by upper exterior tube 11 and lower outer pipe 12, it is simple to processing and assembling, and limits piston 3 upper surface by the first step 14 within upper exterior tube 11, support spring 4 by the second step 15 within lower outer pipe 12, improve the utilization rate of spring 4 elastic force.
Being illustrated in figure 3 the structural representation of the fishing tool that the another embodiment of this utility model provides, be illustrated in figure 4 the cross-sectional schematic of Fig. 3, wherein, outer tube 1 is internal is provided with the 3rd step 16；
Piston 3 is positioned at below the 3rd step 16, and spring 4 is arranged between lower plane and the upper surface of piston 3 of the 3rd step 16, and one end of spring 4 is fixed with the lower plane of the 3rd step 16 and is connected, and the other end is fixing with the upper surface of piston 3 to be connected.
Wherein, it is fixed on the lower plane of the 3rd step 16 by one end of spring 4, the other end of spring 4 is fixed on the upper surface of piston 3, in piston 3 process axially movable stretch or compression spring 4, thereby through spring 4 limit piston 3 descending or promote piston 3 up.And in this utility model embodiment, the simple in construction of outer tube 1, it is simple to processing.
As shown in figures 2 or 4, in this utility model embodiment, piston 3 is provided with piston centre through hole 31 vertically.Wherein, the diameter of piston centre through hole 31 is 5 millimeters, the internal diameter of outer tube 1 is more than 40 millimeters, when by ground to injection liquid in fishing string, by piston centre through hole 31, liquid is throttled, increase fluid pressure so that highly pressurised liquid sprays from piston 3 lower end, shaft bottom is rinsed, it is to avoid smallclothes are embedded in the silt in shaft bottom to be difficult to salvage.
As shown in figures 2 or 4, in this utility model embodiment, fishing tool also includes sealing ring 8, and sealing ring 8 is arranged in the annular gap 9 of piston 3 and the formation of outer tube 1 inwall.Wherein, the upper end of piston 3 is provided externally with seal groove, and sealing ring 8 is arranged in seal groove, seals, by sealing ring 8, the annular gap 9 that piston 3 is formed with outer tube 1 inwall, it is to avoid liquid enters outer tube 1 lower end from piston 3 surrounding, it is ensured that the restriction effect of piston 3.
As shown in Figure 1, it is possible to referring to Fig. 2 to Fig. 4, the quantity of at least two ratchet 2 is four, being axially uniformly distributed of four ratchet 2 opposing pistons 3, and clamping smallclothes consolidate, and are easy to the installing space of reasonable Arrangement ratchet 2.Certainly, skilled person will appreciate that, the quantity of at least two ratchet 2 is alternatively 2,3,5 or more, it is preferable that being axially uniformly distributed of at least two ratchet 2 opposing pistons 3.
As shown in figures 2 or 4, in this utility model embodiment, the lower end outer wall of outer tube 1 is provided with at least two straight trough 17 vertically, the quantity one_to_one corresponding of the quantity of at least two straight trough 17 and at least two ratchet 2, the upper end of each ratchet 2 is arranged in corresponding straight trough 17 respectively through the first bolt 6.Wherein, two the relative sidewalls being parallel to outer tube 1 axis of straight trough 17 are provided with relative bolt hole, and the first bolt 6 is through the upper end of ratchet 2, and the two ends of the first bolt 6 are goed deep in the bolt hole on the two side of straight trough 17 respectively.Certainly, skilled person will appreciate that, ratchet 2 is arranged on the lower end of outer tube 1 also by hinge.
As shown in Figure 1, it is possible to referring to Fig. 2 to Fig. 4, in this utility model embodiment, the two ends of every piece of gusset piece 5 are flexibly connected with the middle part of each ratchet 2 and the lower end of piston 3 respectively through the second bolt 7, simple in construction, it is simple to install.
Above-mentioned this utility model embodiment sequence number, just to describing, does not represent the quality of embodiment.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within protection domain of the present utility model.
Claims (8)
1. a fishing tool, it is characterised in that described fishing tool includes: outer tube, at least two ratchet, piston, spring and with described at least two ratchet gusset piece one to one；
The upper end of described outer tube is provided with joint screw thread；
The upper end of each ratchet in described at least two ratchet is flexibly connected with the lower end of described outer tube respectively, and described each ratchet all can open around its described outer tube relative to the junction point of described outer tube or regain, and the lower end of described each ratchet is bent inwardly to hook-shaped；
Described piston is arranged on described outer tube, and the lower end of described piston is stretched out by described outer tube, and described piston can the axially-movable of relatively described outer tube；
Described spring is arranged between described outer tube and described piston, drives described piston upwards by described spring or limits described piston and move downward；
Being flexibly connected with the lower end of described piston with the one end of every piece of gusset piece in described at least two ratchet gusset piece one to one, the other end is flexibly connected with the middle part of described each ratchet；
By the relatively described outer tube axially-movable of described piston, drive described gusset piece to move, drive the relatively described outer tube of described each ratchet open or regain by described gusset piece.
2. fishing tool according to claim 1, it is characterised in that described outer tube includes upper exterior tube and lower outer pipe, described upper exterior tube is fixing with described lower outer pipe to be connected；
It is provided with first step inside described upper exterior tube, it is provided with second step inside described lower outer pipe, the upper end of described piston is provided with outer lug boss, described outer lug boss is between described first step and described second step, described spring housing is at described piston exterior, and described spring is between described outer lug boss and described second step.
3. fishing tool according to claim 1, it is characterised in that described outer tube is provided with the 3rd step；
Described piston is positioned at below described 3rd step, described spring is arranged between lower plane and the upper surface of described piston of described 3rd step, and one end of described spring is fixing with the lower plane of described 3rd step is connected, the other end is fixed with the upper surface of described piston and is connected.
4. the fishing tool according to claim 1-3 any one claim, it is characterised in that described piston is provided with piston centre through hole vertically.
5. fishing tool according to claim 4, it is characterised in that described fishing tool also includes sealing ring, described sealing ring is arranged in the annular gap of described piston and the formation of described outer tube wall.
6. the fishing tool according to claim 1-3 any one claim, it is characterised in that the quantity of described at least two ratchet is four, being axially uniformly distributed of four relatively described pistons of ratchet.
7. the fishing tool according to claim 1-3 any one claim, it is characterized in that, the lower end outer wall of described outer tube is provided with at least two straight trough vertically, the quantity one_to_one corresponding of the quantity of described at least two straight trough and described at least two ratchet, the upper end of described each ratchet is arranged in corresponding straight trough respectively through the first bolt.
8. the fishing tool according to claim 1-3 any one claim, it is characterised in that the two ends of described every piece of gusset piece are flexibly connected with the middle part of described each ratchet and the lower end of described piston respectively through the second bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521143008.XU CN205370491U (en) | 2015-12-31 | 2015-12-31 | Fishing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521143008.XU CN205370491U (en) | 2015-12-31 | 2015-12-31 | Fishing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205370491U true CN205370491U (en) | 2016-07-06 |
Family
ID=56274906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521143008.XU Active CN205370491U (en) | 2015-12-31 | 2015-12-31 | Fishing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205370491U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108952614A (en) * | 2018-08-01 | 2018-12-07 | 西南石油大学 | A kind of ratchet type down-hole fishing device |
-
2015
- 2015-12-31 CN CN201521143008.XU patent/CN205370491U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108952614A (en) * | 2018-08-01 | 2018-12-07 | 西南石油大学 | A kind of ratchet type down-hole fishing device |
| CN108952614B (en) * | 2018-08-01 | 2020-08-11 | 西南石油大学 | Ratchet type is fishing device in pit |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |