A downhole geophysical measurement auxiliary device

Abstract

This application relates to an auxiliary device for downhole geophysical exploration measurements, comprising: a base, a fixed plate, a telescopic rod, and a lifting rod. A rotating rod is located at the front end of the base, connecting the end of the telescopic rod to the fixed plate, and the fixed plate's tilt angle is adjusted based on the rotating rod. The other end of the fixed plate is mounted on the base via the lifting rod. A connecting guide rail is provided on the fixed plate, and a slider is slidably connected within the connecting guide rail. The slider has a latch for connecting a transmitting coil. Universal wheels are installed below the base. The device can quickly and accurately adjust the transmitting coil angle, avoiding errors from manual adjustment, reducing measurement data errors caused by angle deviations, and improving the reliability of geophysical exploration results. The movable base effectively reduces the physical burden on downhole workers, especially in complex downhole environments, saving significant time and effort in moving equipment. The device has a simple structure, is easy to operate, and can be adapted to transmitting coils of different specifications, exhibiting strong versatility and practicality.

Description

Technical Field

[0001] This application relates to the field of downhole exploration equipment technology, and in particular to a downhole geophysical measurement auxiliary device. Background Technology

[0002] With the continuous development of exploration technology, geophysical exploration methods are widely used in deep geological exploration in mines, with detection depths ranging from hundreds to thousands of meters. These methods are characterized by low cost, short cycle time, and high accuracy in geological exploration. Among them, the transient electromagnetic method (TEM) offers advantages such as high precision and high resolution, allowing for greater depth measurements and a higher signal-to-noise ratio. It is well-suited for large-scale exploration of weakened control structures and is currently widely used in hydrogeology, mineral exploration, and environmental monitoring, achieving good results. The TEM geophysical measurement device mainly consists of a transmitting coil and a receiving coil. The working process is divided into three parts: transmission, electromagnetic induction, and reception. Signal transmission is completed by energizing the transmitting coil. The tilt angle of the transmitting coil during geophysical measurement has a significant impact on the measurement results. Therefore, it is necessary to synchronously adjust the angle of the transmitting coil according to the tilt angle of the geological body being measured during the geophysical measurement process to ensure the accuracy of the geophysical measurement results.

[0003] Currently, the handling and coil placement angle adjustment of transient electromagnetic geophysical exploration (TEM) equipment mainly rely on manual handling and adjustment. TEM equipment is relatively heavy, and manually handling it over long distances downhole increases the workload for operators. Furthermore, the angle needs to be calculated before manual adjustment, which can easily introduce significant errors and affect the final geophysical measurement results. Utility Model Content

[0004] To address or partially address the problems existing in related technologies, this application provides a downhole geophysical measurement auxiliary device. Based on the device, the transmitting coil can be moved quickly, fixedly installed, and its angle adjusted. It is applicable to different types of transmitting coils.

[0005] The first aspect of this application provides a downhole geophysical measurement auxiliary device, including: a base, a fixed plate, a telescopic rod, and a lifting rod. A rotating rod is provided at the front end of the base. The rotating rod is connected to the end of the fixed plate based on the telescopic rod, and the fixed plate adjusts its tilt angle based on the rotating rod. The other end of the fixed plate is mounted on the base based on the lifting rod. A connecting guide rail is provided on the fixed plate. A slider is slidably connected in the connecting guide rail. A buckle for connecting a transmitting coil is provided on the slider. A caster wheel is installed under the base.

[0006] The connecting rail has a "C-shaped" structure, and the buckle clamps the transmitting coil bracket with locking bolts.

[0007] The telescopic rod includes a first sleeve and a first connecting rod. The first sleeve is installed at both ends of the rotating rod, and the first connecting rod is connected to both ends of the fixed plate based on the ball head assembly. The first sleeve and the first connecting rod are respectively provided with connecting holes, and are fixedly connected by bolts passing through the connecting holes.

[0008] The lifting rod includes a second sleeve and a second connecting rod. The second connecting rod is installed on the base. Ear plates are provided at the connection between the second sleeve and the fixing plate. The ear plates are connected by bolts. The second sleeve and the second connecting rod are respectively provided with connection holes, and are fixedly connected by bolts passing through the connection holes.

[0009] The two ends of the rotating rod are fixed to the base by bearings.

[0010] The base also features a multi-level storage platform, on which a compass and a reference table are installed.

[0011] The technical solution provided in this application may include the following beneficial effects:

[0012] This application provides a downhole geophysical measurement auxiliary device that can quickly and accurately adjust the angle of the transmitting coil, avoiding errors from manual adjustment, ensuring the accuracy of geological body measurement angles, reducing measurement data errors caused by angle deviations, and improving the reliability of geophysical results. The movable base effectively reduces the physical burden on downhole workers, especially in complex downhole environments, saving significant time and effort in moving equipment. The device has a simple structure, is easy to operate, can be adapted to different specifications of transmitting coils, and can be used in various downhole geophysical exploration scenarios, exhibiting strong versatility and practicality, providing powerful support for geophysical measurement work under various geological conditions.

[0013] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0014] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0015] Figure 1 This is a schematic diagram of the structure of the device shown in the embodiments of this application;

[0016] Figure 2 This is a schematic diagram of the installation of the transmitting coil of the device shown in the embodiments of this application;

[0017] Figure label:

[0018] In the diagram, 1—fixed plate, 2—connecting guide rail, 3—transmitting coil, 31—coil bracket, 4—slider, 5—buckle, 51—locking bolt, 6—lifting rod, 7—base, 8—storage platform, 9—power supply, 10—storage platform, 11—compass, 12—lighting lamp, 13—reference table, 14—handrail, 15—telescopic rod, 16—rotating rod, 17—caster wheel. Detailed Implementation

[0019] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0020] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0021] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0022] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0024] like Figure 1 The illustrated downhole geophysical surveying auxiliary device includes: a base 7, a fixed plate 1, a telescopic rod 15, and a lifting rod 6. The base 7 is formed by welding multiple rods to create a rectangular frame. Wall panels are installed on the side walls and bottom of the frame. A rotating rod 16 is installed at the front end of the base 7, and both ends of the rotating rod 16 are fixed to the base 7 via bearings, allowing the rotating rod 16 to rotate in a vertical plane. Universal wheels 17 are installed below the base 7, enabling free transport downhole. The wheels can be locked during measurement using a locking mechanism. The base 7 has a multi-layered storage platform. A shelf 10 is installed on top of the storage platform, and a compass 11 and a reference table 13 are installed on the shelf 10. After the transmitting coil 3 is installed on the fixed plate 1, the height-angle comparison table is consulted, and the height of the fixed plate 1 is adjusted and fixed to accurately control the angle of the transmitting coil 3, based on the geological body measurement angle. A handrail 14 is also connected to the storage platform for propelling the device. Hooks and a storage shelf 8 are provided for storing items, and a lighting lamp 12 is provided for downhole illumination.

[0025] The two ends of the rotating rod 16 are connected to the fixed plate 1 via the telescopic rod 15. The fixed plate 1 is installed at an angle on the base 7, and its tilt angle can be adjusted based on the rotating rod 16. The telescopic rod 15 includes a first sleeve and a first connecting rod. The first sleeve is installed at both ends of the rotating rod 16, and the first connecting rod is connected to both sides of the lower end of the fixed plate 1 via a ball joint assembly. Corresponding connecting holes are provided on the first sleeve and the first connecting rod, and they are fixedly connected by bolts passing through the connecting holes. When angle adjustment is required, the relative positions of the first sleeve and the first connecting rod are adjusted, and the position of the first connecting rod inside the first sleeve is extended or pulled out. The bolts are used to fix the telescopic adjustment. The ball joint seat is fixed to the fixed plate 1, and the ball joint rod is threadedly connected to the connecting rod. When the angle of the fixed plate 1 changes, the ball joint allows the connecting rod to deviate at multiple angles between itself and the fixed plate 1, ensuring that the connecting rod is not stuck when it extends or retracts within the sleeve.

[0026] The upper end of the fixed plate 1 is mounted on the base 7 based on the lifting rod 6. The tilt angle of the fixed plate 1 can be adjusted by adjusting the height of the lifting rod 6. The lifting rod 6 includes a second sleeve and a second connecting rod. The second connecting rod is mounted on the base 7. Ear plates are respectively provided at the connection between the second sleeve and the fixed plate 1. The ear plates are connected by bolts. Corresponding connecting holes are opened on the second sleeve and the second connecting rod. The bolts pass through the connecting holes for fixed connection, which is consistent with the adjustment method of the telescopic rod 15. The "angle-hole position corresponding scale" is marked on the lifting rod 6 and the telescopic rod 15, and the hole position spacing of the telescopic rod 15 and the lifting rod 6 is accurately calculated. In actual adjustment, the hole position spacing can accurately match the angle in the reference table 13.

[0027] A lug plate is installed at the top of the lifting rod 6, and two symmetrical lug plates are fixed at the corresponding positions on the upper end of the fixing plate 1. When connecting, the lug plates of the lifting rod 6 are clamped in the middle to increase stability. Align the round holes of the three lug plates, insert bolts, and tighten the bolts with nuts at both ends to form a single-axis hinge structure. At this time, the fixing plate 1 can rotate freely around the axis of the bolt to meet the needs of adjusting the tilt angle of the fixing plate 1.

[0028] At least one set of connecting guide rails 2 are provided on the fixed plate 1, and a slider 4 is slidably connected inside the connecting guide rail 2, such as... Figure 2 As shown, the connecting guide rail 2 has a "C-shaped" structure, which supports and limits the slider 4, allowing the slider 4 to move within the rail. A clip 5 for connecting the transmitting coil 3 is provided on the right side of the slider 4. When installing the transmitting coil 3, the clip 5 is inserted into the bracket of the transmitting coil 3 to form a clamp, and then fixed with the locking bolt 51 to achieve a fixed installation of the transmitting coil 3. After adjusting the angle, the transmitting coil 3 is connected to the power supply 9 via a cable. Positioning holes are made on the slider 4, and multiple positioning holes are also made on the rail. After the slider 4 is slid to the connection position, the position of the slider 4 is fixed by bolts passing through the positioning holes.

[0029] Finally, it should be noted that in this document, relationships such as "first" and "second" are used merely 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 "include," "contain," or any other variations 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 a process, method, article, or apparatus.

[0030] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0031] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. An auxiliary device for downhole geophysical surveying, characterized in that, include: The system comprises a base, a fixed plate, a telescopic rod, and a lifting rod. A rotating rod is provided at the front end of the base. The rotating rod is connected to the end of the fixed plate based on the telescopic rod, and the fixed plate is tilted based on the rotating rod. The other end of the fixed plate is mounted on the base based on the lifting rod. A connecting guide rail is provided on the fixed plate, and a slider is slidably connected within the connecting guide rail. The slider is provided with a buckle for connecting a transmitting coil. Universal wheels are installed under the base.

2. The device of claim 1, wherein, The connecting guide rail has a "C-shaped" structure, and the buckle clamps the support of the transmitting coil through locking bolts.

3. The downhole geophysical measurement auxiliary device according to claim 1, characterized in that, The telescopic rod includes a first sleeve and a first connecting rod. The first sleeve is installed at both ends of the rotating rod. The first connecting rod is connected to both ends of the fixed plate based on the ball joint assembly. The first sleeve and the first connecting rod are respectively provided with connecting holes, and are fixedly connected by bolts passing through the connecting holes.

4. The downhole geophysical measurement auxiliary device according to claim 1, characterized in that, The lifting rod includes a second sleeve and a second connecting rod. The second connecting rod is installed on the base. Ear plates are respectively provided at the connection between the second sleeve and the fixing plate. The ear plates are connected by bolts. The second sleeve and the second connecting rod are respectively provided with connection holes, and are fixedly connected by bolts passing through the connection holes.

5. The downhole geophysical measurement auxiliary device according to claim 1, characterized in that, The two ends of the rotating rod are fixed to the base by bearings.

6. The downhole geophysical measurement auxiliary device according to claim 1, characterized in that, The base is also equipped with a multi-layered storage platform, on which a compass and a reference table are installed.

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