A multifunctional fishing tool for drilling

Abstract

The utility model discloses a multifunctional fishing tool for drilling, including the lifting rope, the lifting hook is fixedly arranged to the lifting rope lower extreme, the fishing mechanism is provided to the fishing work at the lifting hook lower extreme, the fishing mechanism includes the casing, the jaw, the mounting seat, the first electric push rod, the lifting hook lower extreme is provided with the casing, the casing lower extreme surface is swingly provided with the jaw through the pivot, the jaw is provided with three, and evenly interval distribution is in the casing lower extreme outside surface, the casing lower extreme is fixedly provided with the mounting seat one side of jaw, the mounting seat lower extreme is swingly provided with the first electric push rod through the pivot, and the movable end of first electric push rod is swingly connected between the pivot and the jaw. The utility model has good use effect, and the electromagnet magnetic attraction fixed and the jaw are integrated together, thereby when facing the fishing inside drilling well mouth, the fishing success probability is bigger, and the fishing effect is better.

Description

Technical Field

[0001] This utility model relates to the field of drilling tools technology, specifically a multi-functional retrieval tool for drilling. Background Technology

[0002] During drilling operations, tools, pipes, and other debris often fall into the well due to various reasons (such as drill string breakage or component detachment). These debris not only affect the normal progress of drilling work but may also lead to more serious accidents, such as stuck drill bits. Therefore, timely and effective retrieval of debris from the well is crucial.

[0003] Currently, existing retrieval tools on the market have relatively limited functions, typically only effective for specific types or states of fallen objects. For example, hook-type tools for retrieving pipes are ineffective at retrieving irregularly shaped or small objects; while magnetic retrieval tools can only attract magnetic metal objects, rendering them ineffective against non-magnetic ones. In actual drilling operations, the types and states of objects in the well are complex and diverse. Single-function retrieval tools often cannot meet the actual needs, requiring multiple tool changes for retrieval. This not only increases operation time and costs but may also cause missed optimal retrieval opportunities, further increasing the difficulty of retrieval. Therefore, developing a multi-functional retrieval tool capable of adapting to various types and states of fallen objects is of significant practical importance. Utility Model Content

[0004] The purpose of this utility model is to provide a multi-functional retrieval tool for drilling, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-functional retrieval tool for drilling, including a lifting rope, a hook fixedly installed at the lower end of the lifting rope, and a retrieval mechanism for retrieval work installed at the lower end of the hook. The retrieval mechanism includes a housing, grippers, a mounting base, and a first electric push rod. The housing is installed at the lower end of the hook, and grippers are movably installed on the lower surface of the housing via a rotating shaft. There are three grippers, which are evenly spaced on the outer surface of the lower end of the housing. A mounting base is fixedly installed on one side of the grippers at the lower end of the housing. A first electric push rod is movably installed at the lower end of the mounting base via a rotating shaft. The movable end of the first electric push rod is movably connected to the grippers via the rotating shaft. A magnetic attraction mechanism for magnetic retrieval is installed in the middle of the inner side of the housing.

[0006] Preferably, the magnetic attraction mechanism includes a second electric push rod, a mounting head, and an electromagnet. The second electric push rod is fixedly disposed in the middle of the inner side of the housing, and the mounting head is fixedly disposed in the movable end of the second electric push rod. An electromagnet is fixedly disposed in the middle of the lower end of the mounting head. The magnetic attraction mechanism can assist the retrieval mechanism, thereby increasing the probability of successful retrieval and improving the retrieval effect.

[0007] Preferably, a camera is fixedly installed at the lower middle part of the mounting head, which can conveniently capture real-time images of the well, thereby facilitating clamping and magnetic retrieval operations.

[0008] Preferably, supplementary lights are fixedly installed around the outer perimeter of the camera to illuminate the area around the camera, thereby improving the camera's shooting effect.

[0009] Preferably, the upper end of the housing is provided with a lifting lug, and the lifting rope of this device fixes the housing through the hook and the lifting lug, thereby facilitating subsequent disassembly and assembly work.

[0010] Preferably, the suspension rope is internally equipped with a steel wire rope and a power cable. The suspension rope of this device is a composite rope, with the main load-bearing structure being the steel wire rope, while the internal structure is also wrapped with a power cable for transmitting camera images and supplying power to structures such as electromagnets and electric actuators.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model organically integrates two retrieval methods: mechanical clamping and electromagnetic adsorption. Three evenly distributed grippers can stably clamp regular or irregular objects such as pipes and blocks, while the electromagnet can attract magnetic metal objects. The two methods can be used alone or in combination, effectively covering various types of objects such as magnetic / non-magnetic, regular / irregular, large / small size, etc., solving the problem of poor adaptability of traditional single-function tools and greatly improving the retrieval success rate.

[0013] 2. This utility model enables real-time monitoring and high-definition imaging of the underground environment by installing a camera and supplementary lighting on the mounting head. Operators on the ground can clearly grasp the location, shape, and surrounding environment of the fallen object, avoiding blind operation, accurately controlling the opening and closing of the gripper and the start and stop of the electromagnet, reducing ineffective operation time, and improving retrieval efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a multi-functional retrieval tool for drilling according to this utility model;

[0015] Figure 2 This is a cross-sectional view of a multi-functional retrieval tool for drilling according to the present invention;

[0016] Figure 3 This is a bottom view of a multi-functional retrieval tool for drilling according to this utility model;

[0017] Figure 4 This is an overall structural view of the mounting head in a multi-functional retrieval tool for drilling according to this utility model.

[0018] In the diagram: 1. Lifting rope; 101. Steel wire rope; 102. Power cable; 2. Hook; 3. Salvage mechanism; 301. Housing; 302. Gripper; 303. Mounting base; 304. First electric push rod; 4. Magnetic attraction mechanism; 401. Second electric push rod; 402. Mounting head; 403. Electromagnet; 5. Camera; 6. Fill light; 7. Lifting lug. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 This utility model provides a technical solution: a multi-functional retrieval tool for drilling, including a hoisting rope 1. The hoisting rope 1 is a composite structure, internally encapsulating a steel wire rope 101 and a power cable 102. The steel wire rope 101 is made of high-strength alloy steel to ensure load-bearing stability during hoisting. The power cable 102 uses wear-resistant and oil-resistant insulated wires to avoid interference from the complex underground environment on signal transmission and power supply. A hook 2 is bolted to the lower end of the hoisting rope 1. The hook 2 is made by forging and has high structural strength. A lifting lug 7 is hooked at its lower end. The lifting lug 7 is fixed to the upper surface of the housing 301 by welding. This connection method facilitates subsequent disassembly and maintenance of the housing 301 and its internal components.

[0021] The housing 301, as the core load-bearing component, is made of stainless steel, possessing excellent corrosion resistance and structural rigidity, and adaptable to harsh environments such as downhole mud. Three mounting protrusions are evenly spaced along the circumference of the lower surface of the housing 301. Each mounting protrusion is movably connected to a gripper 302 via a pivot. The gripping end of the gripper 302 is provided with anti-slip teeth to enhance friction when in contact with the object, preventing the object from falling off during gripping. A mounting seat 303 is welded to one side of the lower end of the housing 301 corresponding to each gripper 302. The lower end of the mounting seat 303 is movably connected to the fixed end of the first electric push rod 304 via a pivot. The movable end of the first electric push rod 304 is movably connected to the middle position of the gripper 302 via a pivot. When the first electric push rod 304 extends or retracts, it drives the gripper 302 to rotate around the pivot at the lower end of the housing 301, realizing the opening and closing action of the gripper 302. The three grippers 302 work together to form a stable three-point clamping structure.

[0022] A second electric push rod 401 is fixedly mounted on the inner center of the housing 301 via a bracket. The axis of the second electric push rod 401 coincides with the axis of the housing 301 to ensure the stability of its driving direction. The movable end of the second electric push rod 401 is fixed to a mounting head 402 via a threaded connection. The mounting head 402 is made of lightweight aluminum alloy, reducing the overall weight while ensuring structural strength. An electromagnet 403 is fixed to the lower center of the mounting head 402 via bolts. The electromagnet 403 is a DC electromagnet, and its magnetic force can be adjusted by the ground control terminal to accommodate magnetic objects of different weights. A camera 5 is also fixedly mounted on the lower end of the mounting head 402, inside the electromagnet 403. The camera 5 is a waterproof and dustproof industrial-grade camera with its lens facing downwards, capable of capturing real-time images of objects falling into the well. Four supplementary lights 6 are evenly distributed around the outer perimeter of the camera 5. The supplementary lights 6 use LED light sources, which are characterized by low energy consumption and high brightness, providing sufficient illumination for the camera 5.

[0023] The working process of this utility model is as follows: Before operation, the power cable 102 inside the hoisting rope 1 is connected to the ground control terminal and power supply equipment to complete equipment debugging and ensure that the first electric push rod 304, the second electric push rod 401, the electromagnet 403, the camera 5, and the supplementary light 6 are all working normally. During operation, the hoisting rope 1 is slowly lowered through the hoisting equipment, so that the retrieval mechanism 3 gradually enters the well. At the same time, the camera 5 and the supplementary light 6 are turned on, and the image from the well is transmitted to the ground terminal in real time. The operators can judge the position, type, and status of the fallen object through the image.

[0024] When encountering regularly shaped or non-magnetic objects such as pipes, the second electric push rod 401 is retracted to retract the electromagnet 403 into the housing 301, preventing it from interfering with the action of the gripper 302. The position of the lifting rope 1 is adjusted so that the gripper 302 is aligned with the object. The first electric push rod 304 is extended to drive the gripper 302 to open. After the gripper 302 catches the object, the first electric push rod 304 is retracted, the gripper 302 closes and firmly holds the object, and then the object is lifted to the ground by the lifting equipment.

[0025] When encountering magnetic metal fragments, small parts, or other falling objects, the first electric push rod 304 is extended to keep the gripper 302 open, thus avoiding interference with the magnetic attraction operation. The second electric push rod 401 is extended to push the electromagnet 403 to a position close to the falling object. The electromagnet 403 is energized to generate magnetic force, attracting the magnetic falling object. Then, the second electric push rod 401 is retracted to bring the falling object back below the housing 301, and then it is lifted to the ground by the hoisting rope 1.

[0026] When encountering large, irregular magnetic objects, the gripper 302 and electromagnet 403 can be activated simultaneously. The mechanical gripping of the gripper 302 and the magnetic attraction of the electromagnet 403 form a double fixation, ensuring that the object will not fall off during the lifting process, thus further improving the reliability of the retrieval.

[0027] After the salvage operation is completed, the equipment will be brought back to the ground, the power will be turned off, and components such as the gripper 302, electromagnet 403, and camera 5 will be cleaned and maintained to ensure that the equipment can be used normally next time.

[0028] This invention effectively solves the problems of limited functionality and poor adaptability of traditional retrieval tools by combining mechanical clamping and magnetic adsorption with visual monitoring technology. It significantly improves the success rate and efficiency of retrieving objects dropped into drilling wells, reduces operating costs, and has good practical value and prospects for promotion.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-functional fishing tool for drilling, comprising a hoisting rope (1), characterized in that: A hook (2) is fixedly installed at the lower end of the hoisting rope (1). A retrieval mechanism (3) for retrieval work is installed at the lower end of the hook (2). The retrieval mechanism (3) includes a housing (301), a gripper (302), a mounting base (303), and a first electric push rod (304). The housing (301) is installed at the lower end of the hook (2). A gripper (302) is movably installed on the lower surface of the housing (301) via a rotating shaft. The gripper (302) is provided with three... There are 1, and they are evenly distributed on the outer surface of the lower end of the housing (301). The lower end of the housing (301) is fixedly provided with a mounting base (303) on one side of the gripper (302). The lower end of the mounting base (303) is movably provided with a first electric push rod (304) through a rotating shaft. The movable end of the first electric push rod (304) is movably connected to the gripper (302) through the rotating shaft. The inner middle of the housing (301) is provided with a magnetic attraction mechanism (4) for magnetic attraction retrieval.

2. The multi-functional fishing tool for drilling according to claim 1, characterized in that: The magnetic attraction mechanism (4) includes a second electric push rod (401), a mounting head (402), and an electromagnet (403). The second electric push rod (401) is fixedly installed in the middle of the inner side of the housing (301). The mounting head (402) is fixedly installed at the movable end of the second electric push rod (401). An electromagnet (403) is fixedly installed in the middle of the lower end of the mounting head (402).

3. The multi-functional fishing tool for drilling according to claim 2, characterized in that: A camera (5) is fixedly installed at the lower middle part of the mounting head (402).

4. A multi-functional fishing tool for drilling according to claim 3, characterized in that: The camera (5) is equipped with fill lights (6) around its outer perimeter.

5. A multi-functional fishing tool for drilling according to claim 1, characterized in that: The upper end of the housing (301) is provided with a lifting lug (7).

6. A multi-functional fishing tool for drilling according to claim 1, characterized in that: The hoisting rope (1) is equipped with a steel wire rope (101) and a power cable (102).

Images