CN220434695U - Fishing tool - Google Patents

Abstract

The utility model relates to an fisher, which comprises a fisher body, wherein the fisher body is provided with a salvaging surface capable of contacting with falling objects, the fisher body at the salvaging surface is connected with an outer hook salvaging structure and a magnetic salvaging structure, the outer hook salvaging structure comprises a plurality of salvaging hooks, each salvaging hook is rotationally connected with the fisher body, a limiting structure is arranged below each salvaging hook, the limiting structure is connected with the fisher body, and the opening angle of the salvaging hooks is smaller than or equal to 90 degrees through the limiting structure. The fisher realizes the purpose of multiple functions of a single tool through the combination of the outer hook salvaging structure and the magnetic salvaging structure, and can improve the salvaging operation efficiency; and the setting of outer hook salvage structure can be better salvage foraminiferous smallclothes junk.

Description

Fishing tool

Technical Field

The utility model belongs to the technical field of salvaging of underground junk, and particularly relates to a salvaging device.

Background

At present, the salvaging efficiency of rope and cable junk is low in underground operation, and a phenomenon of accumulation of multi-section rope scraps in the underground after multiple salvaging occurs, so that a conventional salvaging tool is unprecedented about the rope, and the salvaging difficulty is high, the construction period is long, and the cost is high. Moreover, during drilling, finishing and well repairing operations, small objects with holes such as wellhead portable slip handles and the like sometimes happen to drop down the well carelessly, and after the similar events happen, the small objects are difficult to process by adopting a conventional fishing tool, so that the fishing effect is poor and the processing period is long.

Disclosure of Invention

In order to solve all or part of the problems, the utility model aims to provide an overshot, which can improve the salvaging efficiency by combining an outer hook salvaging structure and a magnetic salvaging structure, and the arrangement of the outer hook salvaging structure can better salvage small objects with holes.

According to one aspect of the utility model there is provided an overshot comprising an overshot body having an overshot surface capable of contacting a landing object, the overshot body at the overshot surface being connected to an outer hook overshot structure and a magnetic overshot structure.

Further, the outer hook salvage structure comprises a plurality of salvage hooks, each salvage hook is rotationally connected with the salvage device body, a limiting structure is arranged below each salvage hook, the limiting structure is connected with the salvage device body, and the opening angle of the salvage hooks is smaller than or equal to 90 degrees through the limiting structure.

Further, each salvage hook comprises a salvage hook body, each salvage hook body is rotationally connected with the salvage device body, each salvage hook body is fixedly connected with a supporting block, and when any salvage hook body is opened to the maximum included angle with the vertical direction, the supporting block connected with the salvage hook body falls on the limiting structure; the limiting structure is a shear pin, and the shear pin can be sheared.

Further, each salvaging hook is connected with the salvaging device body through an elastic structure, and the salvaging hooks are in an open state through the elastic structure.

Further, all the salvaging hooks are spirally arranged on the salvaging surface, or all the salvaging hooks are divided into two or more rows, and each row is spirally arranged on the salvaging surface.

Further, the magnetism salvage structure includes a plurality of magnet piece, every the magnet piece is all fixed on the fisher body.

Further, the fisher body comprises a salvaging part, the salvaging part is of an arc-shaped structure, and the salvaging surface is arranged on the inner cambered surface of the arc-shaped structure; or the salvaging part is of an arch structure, and the salvaging surface is arranged on the plane of the arch structure.

Further, the upper end of the salvaging part is connected with a connecting part, and the connecting part is provided with a connecting structure for being connected with an external structure.

Further, the connecting structure is a connecting thread.

Further, a liquid flow channel extending from the upper end to the lower end to penetrate through the connecting portion is arranged on the connecting portion, the axis of the liquid flow channel is perpendicular to the normal line of the salvaging surface, and the lower end of the salvaging portion is provided with a tip.

According to the technical scheme, the fisher provided by the utility model has the following beneficial effects:

the fisher realizes the purpose of multiple functions of a single tool through the combination of the outer hook salvaging structure and the magnetic salvaging structure, and can improve the salvaging operation efficiency; and the setting of outer hook salvage structure can be better salvage foraminiferous smallclothes junk.

Drawings

FIG. 1 is a front cross-sectional view of an embodiment of the present utility model;

FIG. 2 is a schematic diagram of an embodiment of the present utility model in which an overshot salvages small pieces with holes;

FIG. 3 is a schematic diagram of an embodiment of the present utility model in which an overshot salvages rope drops;

FIG. 4 is a cross-sectional view of an embodiment of the present utility model at a fishing hook;

FIG. 5 is a left side view of an embodiment of the present utility model of an overshot;

the reference numerals in the drawings are: the fishing device comprises a fishing device body 1, a fishing part 11, a fishing surface 111, a connecting part 12, a connecting structure 121, a liquid flow channel 122, a fishing hook 2, a fishing hook body 21, a supporting block 22, a magnet block 3 and a limiting structure 4.

Detailed Description

For a better understanding of the objects, structure and function of the present utility model, a latch jack according to the present utility model will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, an embodiment of the present utility model is shown, which includes an overshot body 1, the overshot body 1 has an overshot surface 111 capable of contacting with a falling object, and the overshot body 1 at the overshot surface 111 is connected with an outer hook salvaging structure and a magnetic salvaging structure.

Specifically, when the latch jack body 1 is in the latch jack operation, the latch jack body can be lowered into a well with a falling object through a rope.

The fisher body 1 is provided with a salvage surface 111 which can be contacted with falling objects, and the fisher body 1 at the salvage surface 111 is connected with an outer hook salvage structure and a magnetic salvage structure, wherein the outer hook salvage structure is used for salvaging falling objects with holes, as shown in fig. 2, or used for salvaging rope falling objects, as shown in fig. 3; specifically, the outer hook salvaging structure can hook up falling objects with holes or rope falling objects, and the magnetic salvaging structure is used for attracting ferromagnetic substances, such as iron, nickel, cobalt and other metals, through a magnetic field generated by the magnetic salvaging structure.

After the fisher body 1 is put into the well, the position of the salvaging surface 111 is adjusted to enable the falling objects to be located at the salvaging surface 111, and then salvaging of the falling objects with holes or rope falling objects can be achieved through the outer hook salvaging structure, and/or salvaging of ferromagnetic falling objects can be achieved through the magnetic salvaging structure.

In an embodiment, as shown in fig. 1-3 and 4, the outer hook salvaging structure comprises a plurality of salvaging hooks 2, each salvaging hook 2 is rotationally connected with the salvaging device body 1, a limiting structure 4 is arranged below each salvaging hook 2, the limiting structure 4 is connected with the salvaging device body 1, and the opening angle of the salvaging hooks 2 is smaller than or equal to 90 degrees by the limiting structure 4.

In this embodiment, the outer hook salvage structure is a plurality of salvage hooks 2 that set up on salvage face 111, and every salvage hook 2 all rotates with the fisher body 1 of salvage face 111 department to be connected, and limit structure 4 is used for spacing salvage hook 2's limit angle of opening, and salvage hook's angle of opening is salvage hook's upper end from vertical direction rotation to the angle of opening downwards, and limit structure 4 makes salvage hook 2's angle of opening be less than or equal to 90 degrees in this embodiment, and this angle is salvage hook 2's limit angle of opening promptly to make salvage hook 2 can hook up the junk smoothly.

In the process of entering the fisher, the salvaging hook 2 is positioned at the position with the largest opening angle under the action of gravity, namely, the salvaging hook 2 falls on the limiting structure 4; after the salvaging hook 2 contacts with the falling object below from above, the salvaging hook 2 can rotate upwards under the action of the falling object, so that the salvaging hook 2 can smoothly pass through the falling object to the lower side of the falling object, and the salvaging hook 2 can be hooked up to the falling object through the upward lifting salvaging device.

In an embodiment, as shown in fig. 1-3, each salvage hook 2 includes a salvage hook body 21, each salvage hook body 21 is rotatably connected with the salvage device body 1, each salvage hook body 21 is fixedly connected with a supporting block 22, and when any salvage hook body 21 is opened to the maximum included angle with the vertical direction, the supporting block 22 connected with the salvage hook body 21 falls on the limiting structure 4.

In this embodiment, the salvage hook 2 includes a salvage hook body 21 and a supporting block 22, where the salvage hook body 21 may be an integrally formed structure or an integral structure connected together by a fixed connection manner. The salvage hook body 21 is rotationally connected with the salvage device body 1, the supporting block 22 is connected to the lower part of the salvage hook body 21, when the salvage hook body 21 rotates to a limit opening angle for any salvage hook body 21, the supporting block 22 at the lower part of the salvage hook body 21 just falls on the limit structure 4, so that the salvage hook body 21 cannot continue to move, and the opening angle of the salvage hook body 21 is the largest at the moment. The limit of the maximum opening angle of the fishing hook body 21 is realized through the cooperation of the limiting structure 4 and the supporting block 22, and the condition that falling objects fall off due to the fact that the fishing hook body 21 continues to rotate downwards after opening to 90 degrees is avoided.

In one embodiment, the limiting structure 4 is a shear pin, which can be sheared.

The shear pin can be sheared when the shearing force born by the shear pin is greater than the limit value, and the limiting structure 4 is set to be the shear pin, so that when the falling object on the salvage hook body 21 still has downward pulling force on the salvage hook body 21, and the supporting block 22 falls on the shear pin, the salvage hook body 21 transmits the received force to the shear pin through the supporting block 22, so that the shear pin is sheared when the stress is overlarge, the salvage hook 2 rotates downwards after the shear pin is sheared, and the falling object falls off, so that the salvage device can be lifted upwards. The setting of shearing pin has avoided the junk to lead to the unable condition of pulling up of fisher.

In one embodiment, each fishing hook 2 is connected to the latch body 1 by a resilient structure that holds the fishing hook 2 open.

From the foregoing, the salvage hook 2 is rotationally connected with the salvage device body 1, and the salvage hook 2 is opened to the maximum angle under the action of gravity, so that the salvage hook 2 can hook the object, but the salvage hook 2 is easily retracted to the opening angle after being acted by the object, so that the salvage hook 2 can be influenced to smoothly hook the object, in this embodiment, an elastic structure is further provided, the salvage hook 2 is in an opening state, and therefore after the salvage hook 2 is acted by the object, the salvage hook 2 can be retracted when the acting force is required to be greater than the acting force of the elastic structure on the salvage hook 2, so that the salvage hook 2 can easily hook the object.

When the fishing hook is specifically arranged, for example, the elastic structure is arranged as a spring, one end of the spring is connected with the fisher body 1, the other end of the spring is connected with the fishing hook 2, and the spring is in a compressed state so that the spring has an outward pressure on the fishing hook 2, and the pressure enables the fishing hook 2 to be in an open state.

In one embodiment, as shown in FIG. 5, all of the fishing hooks 2 are arranged in a spiral on the fishing surface 111, or all of the fishing hooks 2 are divided into two or more rows, each of which is arranged in a spiral on the fishing surface 111.

The arrangement of the fishing hooks 2 on the fishing surface 111 is further limited in this embodiment, specifically, all the fishing hooks 2 may be arranged in a single-row spiral, a double-row spiral or a multi-row spiral on the fishing surface 111, and the number of the fishing hooks 2 is 6, and the number of the 6 fishing hooks 2 is arranged in a double-row spiral of every 3 on the fishing surface 111 according to the upper end of the fishing surface 111 from the lower end of the upper end, as shown in fig. 5.

In one embodiment, the magnetic salvage structure comprises a plurality of magnet blocks 3, and each magnet block 3 is fixed on the salvage device body 1.

In this embodiment, magnetism salvage structure includes a plurality of magnet piece 3, and every magnet piece 3 is all fixed on the fisher body 1, and when specifically setting up, magnet piece 3 can be fixed on the fisher body 1 through the mode of pasting, still can fix on the fisher body 1 through connecting screw, and secondly, magnet piece 3 is the magnet piece of strong magnetism.

Next, as shown in fig. 5, the magnet blocks 3 may be disposed above the salvage hooks 2, below the salvage hooks 2, and between two rows of salvage hooks 2, as needed.

In an embodiment, the latch jack body 1 includes a latch jack portion 11, the latch jack portion 11 has an arc structure, and a latch jack surface 111 is disposed on an intrados surface of the arc structure; or the fishing part 11 is of an arch structure, and the fishing surface 111 is arranged on the plane of the arch structure.

In this embodiment, the latch body 1 includes a latch portion 11, and the latch portion 11 may have an arc-shaped structure (as shown in fig. 4) or an arcuate structure. And when the fishing part 11 is of an arc structure, as shown in fig. 4, the fishing surface 111 is arranged on the intrados of the arc structure, and the fishing hook 2 is also arranged on the fisher body 1 at the intrados. When the salvage part 11 has an arch structure, the salvage surface 111 is disposed on the plane of the arch structure, and when the salvage part 11 has an arch structure, the strength of the salvage part 11 can be improved.

In an embodiment, as shown in fig. 1 to 3, the upper end of the salvaging part 11 is connected with a connecting part 12, and the connecting part 12 is provided with a connecting structure 121 for connecting with an external structure.

In this embodiment, the upper end of the fishing part 11 is provided with a connecting part 12, and a connecting structure 121 is provided on the connecting part 12, where the connecting structure 121 is used for realizing connection between the fisher and an external structure, for example, the fisher is connected with an upper pipe column through the connecting structure 121, so that the fisher is lowered into the well through the upper pipe column.

In an embodiment, as shown in fig. 1-3, the connection structure 121 is a connection thread, the connection portion 12 is provided with a flow channel 122 extending from an upper end to a lower end to penetrate the connection portion 12, an axis of the flow channel 122 is perpendicular to a normal line of the fishing surface 111, and a tip is provided at a lower end of the fishing portion 11.

In this embodiment, the connection structure 121 is specifically a connection thread, and the connection thread may be an external thread connected to the threaded hole or a connection threaded hole connected to the external thread when specifically set.

Second, the flow channel 122 is configured to inject fluid by which small bottom hole junks are suspended, thereby facilitating salvaging small bottom hole junks.

Again, the provision of the tip at the lower end of the fishing part 11 makes the fishing part 11 aggressive, and enables the fishing part 11 to smoothly extend into the well.

According to the fisher provided by the embodiment of the utility model, through the combination of the radial liquid flow channel 122 and the axial rotation of the fisher, the liquid flow channel 122 is arranged for injecting liquid to suspend the small junk at the bottom of the well, and the axial rotation of the fisher is used for capturing the junk through the outer hook salvaging structure or the magnetic salvaging structure, so that salvaging is realized.

According to the embodiment of the utility model, the salvaging hooks 2 are arranged in a spiral manner, and the salvaging hook body 1 is rotated, so that the rope type junk can be wound on the salvaging hooks 2, and the junk capturing rate is improved.

According to the embodiment of the utility model, the salvaging hook 2 is rotationally connected with the salvaging device body 1 for small objects with irregular holes, so that the salvaging hook 2 can automatically retract after meeting blockage, the rope winding rate or the perforation salvaging success rate is improved, and the salvaging effect is maximized.

The fishing hook 2 provided by the embodiment of the utility model has a safe shearing function, and after a dropped object is fished, if the dropped object cannot be released, the shearing pin can be sheared by lifting the pipe column, so that the underground drill clamping accident or secondary fish of the fishing hook 2 is avoided.

It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

Furthermore, the terms "a," "an," "the" and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is two or more unless specifically defined otherwise.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (10)

1. The utility model provides a fisher, its characterized in that includes the fisher body, the fisher body has a salvage face that can contact with the junk, salvage face department the fisher body is connected with outer hook salvage structure and magnetism salvage structure.

2. The fisher of claim 1, wherein the outer hook salvaging structure comprises a plurality of salvaging hooks, each salvaging hook is rotatably connected with the fisher body, a limiting structure is arranged below each salvaging hook, the limiting structure is connected with the fisher body, and the limiting structure enables the opening angle of the salvaging hook to be smaller than or equal to 90 degrees.

3. The latch according to claim 2, wherein each latch hook includes a latch hook body, each latch hook body is rotatably connected to the latch hook body, each latch hook body is fixedly connected to a support block, and when any latch hook body is opened to a maximum angle with respect to the vertical direction, the support block connected to the latch hook body falls on the limit structure.

4. The latch of claim 2 wherein said limit structure is a shear pin, said shear pin being capable of being sheared.

5. The latch according to claim 2, wherein each of said latch hooks is connected to said latch body by a resilient structure, said resilient structure causing said latch hooks to be in an open position.

6. The latch according to claim 2, wherein all of said latch hooks are arranged in a spiral on said latch face or wherein all of said latch hooks are divided into two or more rows, each row being arranged in a spiral on said latch face.

7. The latch according to claim 1, wherein said magnetic latch structure includes a plurality of magnet blocks, each of said magnet blocks being secured to said latch body.

8. The latch according to any one of claims 1-7, wherein said latch body includes a latch portion, said latch portion being of arcuate configuration, said latch face being disposed on an intrados of said arcuate configuration; or the salvaging part is of an arch structure, and the salvaging surface is arranged on the plane of the arch structure.

9. The latch jack of claim 8 wherein a connection is connected to an upper end of the latch jack, the connection having a connection structure for connection to an external structure.

10. The latch jack of claim 9 wherein said connection structure is a connecting thread; the connecting part is provided with a liquid flow channel extending from the upper end to the lower end to penetrate through the connecting part, the axis of the liquid flow channel is perpendicular to the normal line of the salvaging surface, and the lower end of the salvaging part is provided with a tip.