Impact type physical exploration well hole trimming tool

Abstract

The utility model discloses an impact type physical exploration well hole trimming tool, which comprises a Luoyang shovel head, a guide cylinder, an upper beating pad and a lower beating pad, and is characterized in that an impact head sliding along the inner wall of the guide cylinder is arranged in the guide cylinder, an impact rod is fixed on the impact head, and the upper beating pad and the lower beating pad are plugged and fixed at openings at the upper end and the lower end of the guide cylinder. The Luoyang shovel head is fixed to the bottom of the lower beating pad, the impact rod penetrates through the upper beating pad, and the upper end of the impact rod is connected with the extension rod through a connecting piece. Compared with the prior art, the tool is convenient to turn over, easy to apply force and capable of effectively finishing a defective well hole.

Description

Technical Field

[0001] This utility model pertains to geophysical drilling equipment, specifically to an impact-type geophysical well preparation tool. Background Technology

[0002] During geophysical drilling, due to the wear of drilling tools and the complexity of geological structures, problems such as well shrinkage, well collapse, and rough well walls may occur in the well. These problems are difficult to detect during the drilling process. In the subsequent process of laying explosives, the tubular explosives may not be able to be successfully lowered to the bottom of the well, affecting the acquisition of seismic data. Therefore, it is necessary to repair the problematic well so that the tubular explosives can be successfully lowered to the bottom of the well.

[0003] Currently, the common methods for repairing problematic wells are milling with drilling equipment or poking with a Luoyang shovel. Due to the special nature of geophysical exploration operations (high mountains, dense forests, no roads, etc.), it is extremely difficult and costly to manually transport the removed drilling equipment back to the problematic well. The Luoyang shovel is difficult to use for repairing hard well walls, and for wells with high water content, the adhesion of mud and water makes repeated poking difficult. Utility Model Content

[0004] The purpose of this invention is to overcome the problems of existing wellbore repair tools and provide an impact geophysical wellbore repair tool that is easy to use, easy to apply force to, and can effectively repair problematic wellbores.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an impact-type geophysical well hole repair tool, including a Luoyang shovel head, a guide cylinder, an upper impact pad and a lower impact pad. An impact head that slides along the inner wall of the guide cylinder is provided inside the guide cylinder. An impact rod is fixed on the impact head. The upper and lower impact pads are sealed and fixed at the upper and lower openings of the guide cylinder. The Luoyang shovel head is fixed at the bottom of the lower impact pad. The impact rod passes through the upper impact pad. The upper end of the impact rod is connected to an extension rod through a connector.

[0006] Optionally, the impact head and the upper impact pad are provided with multiple vent holes.

[0007] Optionally, the connector is a connecting joint.

[0008] The usage and principle of this utility model are as follows: In use, the existing well rod is used as an extension rod, connected to the impact rod via a connector. The Luoyang shovel head and guide cylinder are placed into the problematic well hole. The worker pulls up the extension rod to position the impact head at a high position within the guide cylinder, then forcefully pushes the extension rod down, causing the impact head to quickly move downwards and impact the impact pad. The impact force from the impact head causes the guide cylinder to move downwards, driving the Luoyang shovel head to cut and trim the well wall, collecting the trimmed soil inside the well hole into the internal cavity of the Luoyang shovel head. Once a certain amount of soil has accumulated in the internal cavity of the Luoyang shovel head, the Luoyang shovel head is pulled out of the well hole. After clearing the soil from the cavity, the shovel is placed into the well for further repair. When the Luoyang shovel head gets stuck in the well and cannot be pulled out, the worker lowers the extension rod to position the impact head in the lower part of the guide tube. Then, the extension rod is pulled up forcefully, causing the impact head to move upward quickly and impact the upper pad. The impact force from the impact head causes the guide tube and the Luoyang shovel head to receive an upward force. After multiple upward impacts, the guide tube and the Luoyang shovel head are loosened, allowing them to be easily removed from the well. Through the accumulated upward and downward impact force of the impact head, the Luoyang shovel head can smoothly repair the well downward and smoothly remove the soil upward. The overall structure is simple, can make full use of on-site materials, and is easy to move around.

[0009] Compared with the prior art, the present invention has at least the following advantages: the present invention is easy to handle, easy to apply force, and can effectively repair problematic well holes. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the longitudinal section structure of this utility model;

[0011] The components in the attached drawings are labeled as follows: Luoyang shovel head 1, guide cylinder 2, upper impact pad 3, lower impact pad 4, impact head 5, impact rod 6, connecting piece 7, extension rod 8. Detailed Implementation

[0012] Example 1, in conjunction with the following Figure 1Further description of this utility model: The impact-type geophysical well preparation tool includes a Luoyang shovel head 1, a guide cylinder 2, an upper impact pad 3, and a lower impact pad 4. The Luoyang shovel head is made of high-strength metal, while the upper and lower impact pads are made of alloy or specially treated steel. An impact head 5, which slides along the inner wall of the guide cylinder, is provided inside the guide cylinder. The impact head is cylindrical, and an impact rod 6 is vertically welded to the top of the impact head. The impact rod drives the impact head to make linear reciprocating motion inside the guide cylinder. The upper and lower impact pads are welded to the upper and lower ends of the guide cylinder, respectively, and seal the openings at the upper and lower ends of the guide cylinder. The Luoyang shovel head is fitted onto the bottom of the lower impact pad and welded thereto. The impact rod passes through the upper impact pad, forming a sliding hole in the middle of the upper impact pad. The upper end of the impact rod is connected to an extension rod 8 through a connector 7. The connector is a connecting joint, which can be threaded or pin-type. The extension rod can be one or more well rods connected end to end. The guide cylinder, impact head, Luoyang shovel head, impact rod, and extension rod share the same axis.

[0013] To reduce the air resistance encountered by the impact head during its up-and-down movement within the guide cylinder, multiple ventilation holes are made in the impact head and the upper impact pad.

[0014] The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the protection scope of the present invention.

Claims

1. An impact-type geophysical well preparation tool, comprising a Luoyang shovel head (1), a guide tube (2), an upper impact pad (3), and a lower impact pad (4), characterized in that: An impact head (5) that slides along its inner wall is provided inside the guide cylinder. An impact rod (6) is fixed on the impact head. The upper and lower impact pads are sealed and fixed at the upper and lower openings of the guide cylinder. The Luoyang shovel head is fixed at the bottom of the lower impact pad. The impact rod passes through the upper impact pad. The upper end of the impact rod is connected to the extension rod (8) through the connector (7).

2. The impact geophysical well preparation tool according to claim 1, characterized in that: The impact head and the upper impact pad are equipped with multiple vent holes.

3. The impact geophysical well preparation tool according to claim 1, characterized in that: The connector is a connecting joint.

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