While-drilling transmitting module mounting bracket and while-drilling transmitting module
By designing separate power supply boards and main control boards, combined with alloy skeletons and rubber rings, the problems of easy damage and inconvenient disassembly and assembly of the drilling launch module downhole were solved, achieving stable signal transmission and convenient maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-17
- Publication Date
- 2026-03-10
AI Technical Summary
Existing drilling launch modules are easily damaged in the harsh downhole environment, and are inconvenient to disassemble and maintain, have poor protection, and have a complex structure.
The system employs separate power supply board and main control board mounting positions, and utilizes an alloy frame and rubber ring design, combined with electromagnetic isolation and thermal management, to ensure signal transmission stability and mechanical strength, while facilitating disassembly and maintenance.
It improves the reliability and anti-interference capability of signal transmission, reduces electromagnetic interference, enhances mechanical strength, simplifies the maintenance process, and reduces on-site operation costs.
Smart Images
Figure CN223984470U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of logging-while-drilling instrument technology, specifically relating to a mounting bracket for a logging-while-drilling module and a logging-while-drilling module. Background Technology
[0002] In the modern oil and gas industry, logging-while-drilling (LWD) technology is widely used because it can acquire underground geological information in real time. By integrating various sensors and data acquisition devices inside the drill collar, LWD technology can simultaneously monitor formation parameters, such as rock properties and fluid characteristics, during drilling, thus providing crucial support for optimizing the drilling path and improving oil recovery.
[0003] In measurement-while-drilling (MWD) instruments, the transmitter module is the core component of the downhole data transmission system. Its location and function directly affect whether data can be efficiently and reliably transmitted from the bottom of the well back to the surface. The transmitter module is usually located in the upper middle part of the downhole instrument, close to the sensor module, to facilitate the rapid reception of sensor data (such as temperature, pressure, gamma rays, etc.), while also being away from the drill bit impact area to avoid damage to the module due to vibration or mud erosion.
[0004] The core function of the launch module is data conversion and transmission. It is one of the main power-consuming modules in logging-while-drilling (LOD) instruments, especially in situations involving high-frequency electromagnetic waves for data transmission, such as deep wells, high-density mud, or high temperatures. In practical applications, the downhole environment can be extremely harsh, with temperatures exceeding 150°C and pressures exceeding 200 MPa, accompanied by strong vibrations and impacts. This places extremely high demands on the structural design of the LOD launch module. Therefore, providing a more stable, better-sealed, and more interference-resistant structural design for the launch module is one of the main directions for optimizing the design of LOD instruments.
[0005] While existing technologies offer some installation methods for drilling launch modules, they either lack adequate protection or have complex structures that are inconvenient for disassembly and maintenance, thus leaving room for optimization. Utility Model Content
[0006] To address this, this utility model proposes a mounting bracket and a drilling launch module that not only possesses sufficient mechanical strength to withstand complex downhole conditions, but also boasts excellent thermal management and electromagnetic interference resistance, ensuring efficient and accurate signal transmission. Furthermore, it facilitates disassembly and maintenance, reducing on-site operating costs.
[0007] This utility model protects a mounting bracket for a drilling launch module, including an overall cylindrical frame. The frame has independent power board mounting positions and main control board mounting positions along the axial direction. The power board mounting positions and main control board mounting positions are grooves embedded in the frame, and the frame portion between the two forms a spacer.
[0008] As a preferred embodiment, one end of the frame is connected to a terminal block, and the other end is connected to a fixed end. The power board mounting position is located near the terminal block, and the main control board mounting position is located near the fixed end.
[0009] As a preferred embodiment, multiple rubber rings are embedded in the radial direction of the skeleton, including those embedded in the spacer and those embedded at both ends of the skeleton.
[0010] As a preferred option, the bottom surface of the frame is fitted with an anti-slip rubber ring.
[0011] As a preferred embodiment, the power board mounting position and the main control board mounting position are fixed in their respective mounting positions by bolts using power board fixing blocks and main control board fixing blocks.
[0012] As a preferred embodiment, at least two power board mounting blocks and two main control board mounting blocks are provided, which are fixed at different positions on the circuit board.
[0013] As a preferred embodiment, the power board fixing block is provided with a through hole for passing power cables, and the spacer section is provided with a through hole for passing power cables.
[0014] As a preferred option, PEek material spacers are provided in the power board mounting position and the main control board mounting position respectively.
[0015] This utility model also protects a drilling launch module, including the above-mentioned drilling launch module mounting bracket and a power board and a main control board respectively fixed in the power board mounting position and the main control board mounting position;
[0016] The power supply board is used to step down the voltage provided by the external power supply to the operating voltage required by the main control board, thus powering the main control board. The power supply board's power cable is connected to the main control board through the cable pass-through hole and through hole; the external power supply is connected through the terminal block.
[0017] The beneficial effects of this utility model are:
[0018] 1. Less signal interference: By placing the main control board or power board in different installation units, electromagnetic isolation is facilitated. Furthermore, the main control board is far away from the wiring terminals, which helps reduce the interference of electrical current on the main control board. This reduces the complexity of the electromagnetic environment, significantly reduces signal attenuation and noise, and improves data quality and reliability.
[0019] 2. Good mechanical strength: Traditional structural designs often cannot effectively resist the huge static and dynamic loads downhole, which can easily lead to the risk of circuit boards loosening or even falling off. This utility model separates the power board and the main control board and sets them up independently. While setting the power supply module nearby, it also reduces the weight of the power board and the main control board themselves, thereby reducing the installation strength requirements and improving installation reliability.
[0020] 3. Good thermal stability: The curved side (bottom) of the mounting bracket fits the drill collar, while the other side (top) is the mounting chamber. This design can quickly dissipate heat through heat conduction and avoid excessive local temperature through heat convection, thereby preventing damage to sensitive electronic components.
[0021] 4. Easier maintenance: In case of malfunction or need to replace parts, simply disconnect the terminal block and loosen the fixing bolts to remove the entire mounting bracket from the drill collar; then remove the fixing block to remove the main control board or power board for maintenance. Attached Figure Description
[0022] Figure 1 This is a three-dimensional structural diagram of the drilling launch module mounting bracket disclosed in Example 1;
[0023] Figure 2 This is a side sectional view of the drilling launch module mounting bracket disclosed in Example 1;
[0024] Figure 3 This is a bottom view of the drilling launch module mounting bracket disclosed in Example 1;
[0025] Figure 4 This is a top view of the drilling launch module mounting bracket disclosed in Example 1. Detailed Implementation
[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.
[0027] Example 1
[0028] A mounting bracket for a drilling launch module, such as Figure 1 As shown, it includes a cylindrical frame 1, with independent power board mounting positions 2 and main control board mounting positions 3 along the axial direction.
[0029] Since the core function of the transmitter module is data conversion and transmission, it is one of the main power-consuming modules in logging-while-drilling instruments, especially when using high-frequency electromagnetic waves for data transmission, and under conditions of deep wells, high-density mud, or high temperatures. Long-distance power supply can lead to voltage attenuation; therefore, local power supply ensures a stable input voltage for the transmitter module, avoiding signal distortion or module restarts due to voltage drop.
[0030] Therefore, in this embodiment, the transmitting module is equipped with a separate power supply module, namely a power board, located nearby. The input voltage of the power board comes from power sources such as underground generators or battery packs. Its main responsibility is to provide a stable and reliable power supply to the transmitting module, to convert the input voltage into different levels suitable for the operation of various subsystems of the transmitting module, and to ensure that these output voltages have good stability and purity.
[0031] The power supply board can eliminate potential noise interference through built-in voltage regulators and filtering circuits, ensuring a stable and fluctuation-free output voltage. It can also have overcurrent and overheat protection mechanisms to prevent equipment damage due to abnormal conditions. Furthermore, it can employ electrical isolation technology to prevent mutual interference between different components, improving system safety. Since the circuit design of the power supply board is not the core focus of this embodiment, it will not be elaborated upon here.
[0032] The main control board is the brain of the drill-while-launch module, responsible for coordinating and controlling the operation of all internal components, processing acquired data, and executing commands to send to other peripheral devices. It typically includes a microprocessor, memory, and other necessary interface circuits. Below is a brief list of some of the main functions of the main control board. It's important to understand that the main control board's functionality can be expanded as needed.
[0033] 1. Receive signals from sensors and preprocess the raw data, such as analog-to-digital conversion, filtering, and calculation, for subsequent analysis;
[0034] 2. Used for command parsing and execution: Based on the instructions received from the ground station or other control systems, it parses the instructions and drives the corresponding actuators to perform actions, such as starting the motor or adjusting parameter settings.
[0035] 3. Establish and maintain a wireless or wired communication link with the ground monitoring center to upload important information such as work status reports and measurement results in real time;
[0036] 4. Monitor the working status of itself and connected equipment, and react promptly in case of any abnormality, such as triggering alarms or taking emergency measures, to ensure operational safety;
[0037] 5. Supports remote software upgrades, facilitating firmware optimization and improvement by technical personnel, while also recording log files for post-incident troubleshooting.
[0038] As can be seen from the above functional introduction of the power board and the main control board, the power board and the main control board have different operating voltage and frequency characteristics. The power board focuses on electrical control, while the main control board focuses on signal processing. Therefore, separating the two is beneficial to reducing mutual interference.
[0039] The frame 1 is made entirely of alloy materials, such as titanium alloy or nickel-based alloy, to meet the requirements for strength, temperature resistance, and corrosion resistance in extreme environments. To further block electromagnetic interference between the power board and the main control board, a spacer 4 is provided between the power board mounting position 2 and the main control board mounting position 3 to achieve physical isolation. The spacer 4 can be an independent structure, welded and fixed to the frame on both sides, but in this embodiment, the spacer 4 is preferably an integral structure with the frame 1.
[0040] Reference Figure 1 , Figure 2 As shown, the power board mounting position 2 and the main control board mounting position 3 are recesses embedded in the frame 1, and the frame portion between them naturally forms a spacer 4. The spacer 4 and the frame 1 are an integral structure, which can improve the electromagnetic interference blocking effect while providing better mechanical strength.
[0041] Since the power board also needs to be supplied with input voltage through power supply channels such as underground generators or battery packs, in this embodiment, a terminal 11 is connected to one end of the frame 1, and the power board mounting position 2 is set close to the terminal 11 to facilitate the access of input voltage; the other end of the frame 1 is connected to the fixed end 12, and the main control board mounting position 3 is set close to the fixed end 12.
[0042] Since the drilling launch module mounting bracket also needs to be fitted with a drill collar sleeve, in order to fix the drill collar sleeve relative to the drilling launch module mounting bracket, multiple rubber rings 5 are embedded in the radial direction of the frame 1, including those embedded in the spacer 4 and those embedded at both ends of the frame 1, see [reference]. Figure 2 , Figure 3 Simply put, rubber rings 5 are embedded in the middle and both ends of the frame 1. In this embodiment, the rubber rings 5 are embedded by setting an annular groove on the frame 1, so that the rubber rings 5 are embedded therein. The outer end face of the rubber rings 5 in the annular groove contacts the inner wall of the drill collar sleeve, which plays a role in anti-slip and vibration reduction.
[0043] In addition, this embodiment also adds a stable anti-slip and shock absorption solution, namely, as follows: Figure 3 As shown, an anti-slip rubber ring 13 is embedded on the bottom surface of the frame 1. The bottom surface here is relative to the mounting position of the power board and the main control board. When the mounting position of the power board and the main control board is vertically upward, the vertically downward side is the bottom surface of the frame 1. Figure 3 The anti-slip rubber rings shown are respectively installed at the power board mounting position 2 and the main control board mounting position 3, and are generally elliptical in shape. In this embodiment, the anti-slip rubber ring 13 is embedded by creating an inwardly inclined groove 14 on the bottom surface of the frame 1, see [reference]. Figure 2 The outer end face of the anti-slip rubber ring 13 is in oblique contact with the inner wall of the drill collar sleeve, which has better anti-slip and vibration reduction effects and can prevent the launch module from shifting due to vibration or impact during the drilling process.
[0044] There are various ways to install the power board and main control board. The most common method is to drill mounting holes at the four corners of the circuit board and secure them with bolts, washers, and springs. However, in logging-while-drilling applications, the circuit board surface is usually coated with an insulating coating, commonly known as conformal coating, which makes it relatively smooth. This method makes the bolts more prone to loosening due to vibration. Therefore, in this embodiment, the power board mounting position 2 and the main control board mounting position 3 are secured in their respective positions using power board fixing blocks 7 and main control board fixing blocks 8, along with bolts (including washers and springs). See [link to documentation]. Figure 1 Anti-slip pads can be added to the contact surface between the fixing block 7 / 8 and the circuit board (the general term for the power board and the main control board, the same below). The fixing block 7 / 8 can also be made of a material that is not easy to slip or a material with a treated surface to reduce the possibility of the bolts loosening under vibration.
[0045] Meanwhile, at least two power board fixing blocks 7 and two main control board fixing blocks 8 are each provided and fixed at different positions on the circuit board. Figure 1 In the disclosed mounting bracket, three power board fixing blocks 7 and three main control board fixing blocks 8 are provided, corresponding to the middle and both ends of the circuit board respectively, thus achieving a more stable fixation. Understandably, the circuit board design needs to make room for the contact positions of the fixing blocks.
[0046] Since the power board needs to supply power to the main control board, this embodiment provides a cable guide hole 9 for the power board fixing block 7 and a through hole 10 for the power cable on the spacer section 4. This prevents the power cable from dangling inside the drill collar sleeve and becoming loose at the end under prolonged vibration. A cable tie can also be installed at the through hole 10 to further limit the swaying of the power cable. In addition, the cable guide hole 9 can also be located on the main control board fixing block 8 near the power board side to facilitate the limiting of the power cable after passing through the through hole 10. The power interface on the main control board is preferably located close to the main control board fixing block.
[0047] To prevent excessive pressure from the mounting bolts / washers on the circuit board, which could lead to localized damage, this embodiment includes PEek spacers 6 in the power board mounting position 2 and the main control board mounting position 3. PEek material has excellent high-temperature resistance, electrical insulation, high strength, and high rigidity, which can improve the reliability of the circuit board mounting.
[0048] Example 2
[0049] A drilling launch module includes the aforementioned drilling launch module mounting bracket and a power board and a main control board respectively fixed in the power board mounting position 2 and the main control board mounting position 3;
[0050] The power supply board is used to step down the voltage provided by the external power supply to the operating voltage required by the main control board, and to power the main control board. The power supply board’s power cable is connected to the main control board through the cable hole 9 and the through hole 10; the external power supply is connected through the terminal 11.
[0051] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without inventive effort should fall within the protection scope of this utility model.
Claims
1. A drilling-while-transmitting module mounting bracket comprising a skeleton (1) in the shape of a cylinder as a whole, characterized in that, The skeleton (1) is divided into power board mounting position (2) and main control board mounting position (3) along the axial direction, the power board mounting position (2) and the main control board mounting position (3) are recessed in the skeleton (1), and the skeleton part between the two forms a spacing section (4).
2. The drill-while-traveling launch module mounting bracket of claim 1, wherein, The skeleton (1) is connected with a wiring end (11) at one end and a fixed end (12) at the other end, the power board mounting position (2) is arranged close to the wiring end (11), and the main control board mounting position (3) is arranged close to the fixed end (12).
3. The drill transmit module mounting bracket of claim 2, wherein, The skeleton (1) is embedded with rubber rings (5) in multiple places in the radial direction, including those embedded in the spacing section (4) and those embedded in the two ends of the skeleton (1).
4. The drill transmit module mounting bracket of claim 1, wherein, The bottom surface of the skeleton (1) is embedded with an anti-skid rubber ring (13).
5. The drill transmitting module mounting bracket according to any one of claims 1-4, characterized in that, The power board mounting position (2) and the main control board mounting position (3) are fixed in the corresponding mounting positions by the power board fixing block (7) and the main control board fixing block (8) cooperating with bolts.
6. The drill transmit module mounting bracket of claim 5, wherein, The power board fixing block (7) and the main control board fixing block (8) are respectively provided with at least two blocks, which are fixed at different positions of the circuit board.
7. The drill transmit module mounting bracket of claim 5, wherein, The power board fixing block (7) is provided with a wire hole (9) for passing the power line, and the spacing section (4) is provided with a through hole (10) for passing the power line.
8. The drill transmit module mounting bracket of claim 5, wherein, The power board mounting position (2) and the main control board mounting position (3) are respectively provided with a peek spacer (6).
9. A while-drilling launch module, characterized by, The drill transmitting module mounting bracket according to any one of claims 1-8 and the power board and the main control board respectively fixed in the power board mounting position (2) and the main control board mounting position (3); The power board is used for reducing the voltage provided by the external power supply to the working voltage required by the main control board, and supplying power to the main control board, and the power line of the power board is connected to the main control board through the wire hole (9) and the through hole (10).
10. The while-drilling launch module of claim 9, wherein, The external power supply is connected through the wiring end (11).