Oil well fishing device
Technical Field
The invention relates to oil well junk fishing equipment, in particular to an oil well fishing device.
Background
In the oil gas development and production process, operating tools or sundries often fall into an oil well, the production of the oil well is easily stopped, and the oil well is even scrapped in severe cases, so that the junk needs to be salvaged by salvage equipment.
The existing salvage equipment generally adsorbs or hooks a falling body through a strong magnet or a hook-shaped object which is placed in a shaft, so that the falling body is salvaged to the ground, and the salvage purpose is realized. However, in the process of fishing operation, the existing fishing tool lacks protection for the object to be fished, and both the object to be fished and the fishing equipment are easy to scrape and rub the pipe wall, and are easy to drop again due to scraping and rubbing, so that not only can the collision to the oil well be avoided, but also the fishing efficiency can be reduced, and even the oil well equipment is damaged.
In summary, there is a need for a new fishing device with safer structure design and capable of effectively improving the operation efficiency.
Disclosure of Invention
The invention aims to solve the technical problem that the existing oil well fishing equipment lacks a safe and stable protection structure.
In order to solve the technical problems, the technical scheme adopted by the invention is to provide an oil well fishing device, which comprises a supporting frame arranged at a well mouth, wherein a control box body is fixedly arranged on the supporting frame, a motor and a control circuit for paying off and taking up are respectively arranged in the control box body, the output end of the motor downwards penetrates out of the control box body and is connected with a cable, a cable is arranged in the cable, the bottom of the cable is connected with a fishing body, the fishing body is controlled by the motor to move and lift in an oil well, the fishing body is respectively provided with a hook-shaped fishing piece and an electromagnetic fishing piece, the electromagnetic fishing piece is connected with the control circuit through the cable, the control circuit controls the electromagnetic fishing piece to be switched on or off, the oil well fishing device also comprises a protective sleeve which is movably arranged relative to the fishing body, and the protective sleeve moves up and down along, to reveal or cover the fishing body.
In the above scheme, the drive assembly including connect in the protective sheath with vice cable between the control box, be equipped with in the control box and be used for the unwrapping wire and receive the vice motor of line, the output of vice motor is worn to locate downwards outside the control box and connect in vice cable, be equipped with magnetic sensing element on the inside wall of protective sheath, magnetic sensing element orientation the electromagnetism is salvaged a layout, and along with switching on or breaking off of electromagnetism salvage, the electromagnetism is salvaged a absorption or is loosened magnetic sensing element.
In the above scheme, the two secondary cables are respectively arranged in bilateral symmetry.
In the above scheme, the control box body is provided with an auxiliary motor switch, and the auxiliary motor switch is connected with the control circuit through an electric wire.
In the above scheme, the drive assembly includes vertical arrangement in the slide on the electromagnetism is salvaged the piece, the upper and lower both ends of slide are equipped with an electromagnetic induction component respectively, the electromagnetic induction component passes through cable junction in control circuit, be equipped with the magnetic sensing component on the inside wall of protective sheath, the embedded and sliding connection in of magnetic sensing component in the slide, be equipped with inductive switch on the control box, inductive switch with control circuit passes through the connection of electric lines, control circuit controls respectively the electromagnetic induction component opens and close, and makes the magnetic sensing component drives the protective sheath orientation arbitrary one the vertical migration of electromagnetic induction component.
In the above scheme, the magnetic sensing element is made of steel, and the electromagnetic induction element is an electromagnet.
In the above scheme, the control box body is respectively provided with an electromagnetic switch and a motor switch, and the electromagnetic switch and the motor switch are respectively connected with the control circuit through electric wires.
In the scheme, the electromagnetic fishing piece is an electromagnet.
In the above scheme, the protective sleeve is in a straight cylinder shape or a stepped cylinder shape with a small upper part and a large lower part matched with the shape of the fishing body.
In the above scheme, the protective sleeve is an insulator and is an absolute magnet.
According to the invention, through designing the driving protection structure carried by the fishing equipment, the scraping and impacting of sundries on the pipe wall can be effectively avoided, the secondary falling is avoided, the fishing operation efficiency is improved, and the damage to oil well equipment is reduced.
Drawings
FIG. 1 is a schematic external view of a first embodiment of the present invention;
FIG. 2 is a perspective view of the internal structure of FIG. 1;
FIG. 3 is a usage state change diagram of the first embodiment of the present invention;
FIG. 4 is a schematic external view of a second embodiment of the present invention;
FIG. 5 is a perspective view of the internal structure of FIG. 4;
fig. 6 is a diagram illustrating a change in the usage state of the second embodiment of the present invention.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings.
The invention discloses an oil well fishing device, which can be realized by appropriately improving process parameters by a person skilled in the art by referring to the content in the text. It is expressly intended that all such alterations and modifications which are obvious to those skilled in the art are deemed to be incorporated herein by reference, and that the techniques of the invention may be practiced and applied by those skilled in the art without departing from the spirit, scope and range of equivalents of the invention.
In the present invention, unless otherwise defined, scientific and technical terms used herein have the meanings that are commonly understood by those skilled in the art.
As shown in fig. 1 to 6, the oil well fishing device provided by the invention comprises a support frame 1 arranged at a well mouth, wherein a control box body 2 is fixedly arranged on the support frame 1, a motor and a control circuit for paying off and taking up are respectively arranged in the control box body 2, the output end of the motor is downwards penetrated outside the control box body 2 and is sequentially connected with a cable 3 and a fishing body 4, a motor switch is arranged on the control box body 2, the motor switch is connected with the control circuit through an electric wire, when in use, the motor is driven by the control circuit to operate to drive the cable 3 to stretch, so that the fishing body 4 is moved and lifted in an oil well to fish fallen objects, control buttons of all corresponding parts are arranged on the control box body 2, and all the control buttons are connected with the control circuit through electric wires to achieve the purpose.
In the invention, because the motor and the electric wire are relatively conventional connecting elements, and the installation, penetration and layout modes of the electric wire among all parts are relatively simple and common, the electric wire is not taken as a core innovation point of the invention, and only by means of related technologies, so that the connection diagram of the lead group and the schematic diagram of the motor among all parts are omitted in the drawing in order to avoid confusion caused by circuit diagram.
Further, hawser 3 embeds has the cable, salvage and be equipped with hook-shaped salvage 5 and electromagnetism salvage 6 respectively protrudingly on the body 4, electromagnetism salvage 6 is the electro-magnet, hook-shaped salvage 5 and electromagnetism salvage 6 are comparatively ripe prior art, both can the exclusive use, also can use multipurposely, consequently can realize salvage the function with the help of adopting the correlation technique in a flexible way, wherein, electromagnetism salvage 6 and pass through cable junction in control circuit, be equipped with electromagnetic switch on the control box 2, electromagnetic switch passes through electric wire connection with control circuit, can operate control circuit like this and control the switching on or the disconnection of electromagnetism salvage 6 and be used for adsorbing the junk.
In addition, the invention also comprises a protective sleeve 7 which is arranged in a way of moving relative to the fishing body 4, wherein the material of the protective sleeve 7 is preferably an insulator and a dead magnet body, the shape can be a straight cylinder (with larger volume) or a step cylinder (with small space) which is matched with the shape of the fishing body 4 and has a small upper part and a large lower part, and the protective sleeve 7 can be selected according to the actual situation and is arranged between the fishing body 4 and the inner wall of the oil well, so the maximum outer diameter of the protective sleeve 7 is smaller than the inner diameter of the oil well and larger than the outer diameter of the fishing body 4, therefore, the protective sleeve 7 can move up and down along the direction of the oil well under the driving of the driving component to expose or cover the fishing body 4, for example, the protective sleeve 7 can expose the fishing body 4 during the fishing operation at the bottom of the well, thus the fishing operation can not be obstructed, when the fishing body 4 is lifted up, play the guard action, can also avoid falling the thing and drop once more because of the collision.
The driving structure of the invention is divided into the following two implementation modes:
example 1
As shown in fig. 1 to 3, the first driving structure specifically includes two secondary cables 8 connected between the protective sheath 7 and the control box 2, the two secondary cables 8 are respectively arranged in bilateral symmetry to keep the balance of forces applied when the protective sheath 7 is pulled by the secondary cables 8, a secondary motor for paying off and taking up wires is arranged in the control box 2, an output end of the secondary motor penetrates out of the control box 2, and then is connected to the secondary cable 8 to realize the transmission and output of the lifting power, a secondary motor switch is arranged on the control box 2, and the secondary motor switch is connected to the control circuit through an electric wire, so that manual control can be realized, thereby the protective sheath 7 can be driven to lift in the arrow direction in the figure along with the forward and reverse operation of the secondary motor, in this embodiment, as a further preferable design, a magnetic sensing element 9 can be fixedly embedded on the inner side wall of the protective sheath 7, and the magnetic sensing element 9 can be made of steel, and the magnetic sensing element 9 is arranged towards the direction of the electromagnetic fishing piece 6 inwards, so that the electromagnetic fishing piece 6 can automatically adsorb a main magnetic sensor or loosen the magnetic sensing element 9 along with the connection or disconnection of the electromagnetic fishing piece 6, the design has the advantages that the shaking and dislocation between the protective sleeve 7 and the fishing body 4 in the lifting process can be avoided, and the possibility of rubbing and secondary falling of an oil pipe is also avoided.
Example 2
As shown in fig. 4 to 6, the second driving structure specifically includes a slide way 10 vertically provided on the electromagnetic fishing component 6, an electromagnetic induction element is preferably embedded in each of the upper and lower ends of the slide way 10, the electromagnetic induction element is preferably an electromagnet, the electromagnetic induction element is connected to the control circuit through a cable, a magnetic sensing element 9 is fixedly embedded on the inner side wall of the protective sleeve 7, the magnetic sensing element 9 is preferably made of steel, the magnetic sensing element 9 is designed in a slider shape that is embedded in the slide way 10 and can vertically slide along the slide way 10, the control box 2 is provided with an induction switch, the induction switch is connected with the control circuit through a wire, and the control circuit controls the electromagnetic induction element to open and close, so that the required electromagnetic induction element generates magnetic force to attract and drives the magnetic sensing element 9 to move up and down to two high and low limit positions and then firmly attract, and thus along the arrow direction in the figure, the magnetic sensing element 9 can drive the protective sleeve 7 to vertically move towards any one electromagnetic sensing element, compared with the first embodiment, the design saves the use of an auxiliary motor, and the lifting can be driven by utilizing the electromagnetic property of the fishing body 4.
According to the invention, through designing the driving protection structure carried by the fishing equipment, the scraping and impacting of sundries on the pipe wall can be effectively avoided, the secondary falling is avoided, the fishing operation efficiency is improved, and the damage to oil well equipment is reduced.
The present invention is not limited to the above-mentioned preferred embodiments, and any structural changes made under the teaching of the present invention shall fall within the protection scope of the present invention, which has the same or similar technical solutions as the present invention.