Measurement-while-drilling exploring tube nipple and using method thereof

Abstract

The invention provides a measurement-while-drilling exploring tube short section and a using method thereof. The measurement-while-drilling exploring tube short section comprises a sleeve assembly, a protective cap and a connecting short section are connected to the sleeve assembly, and a centralizer short section is connected to the connecting short section; the sleeve assembly comprises a pressure-bearing outer cylinder, a ceramic fiber sleeve is installed in the pressure-bearing outer cylinder, and a signal processing assembly is installed in the ceramic fiber sleeve. The connecting short section comprises a mounting sleeve, and the mounting sleeve is in threaded connection with the pressure-bearing outer barrel and the centralizer short section; a nickel-based superalloy partition plate is mounted in the mounting sleeve; the interior of the mounting sleeve is divided into a plurality of mounting cavities by the nickel-based superalloy partition plates, and a detection assembly used for detecting external data is independently mounted in each mounting cavity. According to the exploring tube short section, the combination of the pressure-bearing outer cylinder and the ceramic fiber sleeve is adopted, the pressure resistance of the exploring tube is enhanced, stable work in an extreme underground environment is ensured, the interior of the mounting sleeve is divided into a plurality of independent mounting cavities through the nickel-based superalloy partition plates in the connecting short section, mutual interference among signals is effectively avoided, and the working efficiency is improved. And the data acquisition precision and efficiency are improved.

Description

Technical Field

[0001] This invention belongs to the field of oil well exploration technology, specifically to a measurement-while-drilling probe section and its usage method. Background Technology

[0002] In recent years, 60% of the world's newly added oil and gas reserves have come from deep formations. Deep and ultra-deep formations have become the main battleground for major oil and gas discoveries, with deep and ultra-deep oil and gas resources reaching 67.1 billion tons of oil equivalent, accounting for 34% of the total oil and gas resources. Deep and ultra-deep unconventional and complex oil and gas geological conditions are complex, with high temperatures and pressures in the formations, complex stratigraphy, and high risks. This necessitates multiple explorations before drilling, resulting in low drilling efficiency, relatively long cycles, and persistently high costs. Drilling costs for unconventional and complex oil and gas formations can reach up to 80% of the total oil and gas exploration and development costs, requiring revolutionary technologies to drive oil and gas extraction, improve drilling efficiency, and achieve large-scale, cost-effective development of complex oil and gas resources.

[0003] The probe sub is a commonly used logging tool in oil drilling engineering. During drilling operations, as the drill bit penetrates the downhole formations, it can measure multiple physical parameters of the formations in real time, including electrical properties, density, and natural gamma rays. The measuring part of the probe sub contains sensors that can measure parameters such as azimuth, natural gamma ray intensity, and pressure. However, deep and ultra-deep wells operate in high-temperature and high-pressure environments. Under these conditions, the probe sub is prone to damage, including to the probe itself and the sensors inside, rendering it ineffective and resulting in low drilling efficiency in deep and ultra-deep wells. Summary of the Invention

[0004] To address the problem that existing probe subs are prone to damage to the probe and its internal sensors under high temperature and pressure in deep and ultra-deep wells, resulting in low drilling efficiency, this invention provides a measurement-while-drilling probe sub and its usage method.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention proposes a measurement-while-drilling (MWD) probe section, including a sleeve assembly, one end of which is connected to a protective cap, and the other end of which is connected to one end of a connecting section, and the other end of the connecting section is connected to a centralizer section. The sleeve assembly includes a pressure-bearing outer cylinder, a ceramic fiber sleeve installed inside the pressure-bearing outer cylinder, and the outer wall of the ceramic fiber sleeve fitting against the inner wall of the pressure-bearing outer cylinder; a signal processing component is installed inside the ceramic fiber sleeve. The connecting section includes a mounting sleeve, one end of which is threaded to the pressure-bearing outer cylinder, and the other end of which is threaded to the centralizer section; The mounting sleeve is equipped with a nickel-based superalloy partition; the nickel-based superalloy partition divides the interior of the mounting sleeve into multiple mounting cavities that can shield external signals, and each mounting cavity is independently equipped with a detection component for detecting external data.

[0006] Preferably, the nickel-based superalloy partition divides the interior of the mounting sleeve into five mounting cavities, one of which is located at the center of the mounting sleeve, and the remaining mounting cavities are arranged around the mounting cavity at the center of the mounting sleeve.

[0007] Preferably, the detection assembly includes a pressure sensor, an azimuth gamma detector one, a temperature sensor, an azimuth gamma detector two, and a rotation sensor, all of which are signal-connected to the signal processing assembly. The rotation sensor is installed in the mounting cavity at the center of the mounting sleeve. The pressure sensor, the azimuth gamma detector one, the temperature sensor, and the azimuth gamma detector two are installed in other mounting cavities, and the pressure sensor, the temperature sensor, the azimuth gamma detector one, and the azimuth gamma detector two are symmetrically installed about the rotation sensor.

[0008] Preferably, threaded posts are provided at both ends of the mounting sleeve, and the threaded post at one end of the mounting sleeve is connected to the pressure-bearing outer cylinder, while the threaded post at the other end of the mounting sleeve is connected to the centralizer section.

[0009] Preferably, a ternary alloy thin film of iron, cobalt, and ruthenium is disposed on the inner wall of the mounting cavity inside the mounting sleeve.

[0010] Preferably, the signal processing component includes a battery module, a data processing unit, a wireless receiver, a wireless transmitter, and a power amplifier module; the wireless receiver, the power amplifier module, the wireless transmitter, the battery module, and the data processing unit are installed inside the pressure-bearing outer cylinder, and are installed sequentially from the end furthest from the mounting sleeve; The battery module is electrically connected to the data processing unit, the wireless receiver, the pressure sensor, the first azimuth gamma detector, the temperature sensor, the second azimuth gamma detector, the rotation sensor, the wireless transmitter, and the power amplifier module, respectively. The pressure sensor, the first azimuth gamma detector, the rotation sensor, the temperature sensor, and the second azimuth gamma detector are respectively connected to the wireless transmitter. The wireless transmitter is connected to the power amplifier module. The power amplifier module is connected to the data processing unit. The data processing unit is connected to the wireless receiver. The wireless receiver is connected to the ground signal controller.

[0011] Preferably, the power amplification module includes a signal amplification unit, a bandpass filter unit, and an A / D conversion unit. The signal amplification unit is signal-connected to the bandpass filter unit and the wireless transmitter, the bandpass filter unit is signal-connected to the A / D conversion unit, and the A / D conversion unit is signal-connected to the data processing unit.

[0012] Preferably, an aerogel felt is provided between the mounting sleeve and the centralizer section.

[0013] Preferably, the straightener section includes a fixing sleeve, and a straightening wing is provided on the outer wall of the fixing sleeve. One end of the fixing sleeve is connected to the mounting sleeve.

[0014] The present invention also proposes a method for using a measurement-while-drilling (MWD) probe sub, which, based on the aforementioned probe sub, includes the following steps; Step 1: Lower the probe section into the deep well and straighten it using the centralizer section; Step 2: Control the detection component to acquire data from inside the deep well and transmit the data to the signal processing component; Step 3: The signal processing component amplifies the data inside the deep well and transmits it to the surface.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: This invention discloses a short section for measurement while drilling (MWD) probes. This short section employs a combination of a pressure-bearing outer cylinder and a ceramic fiber sleeve, enhancing the probe's pressure resistance and ensuring stable operation in extreme downhole environments. Furthermore, the high insulation properties of the ceramic fiber sleeve effectively isolate electrical interference, protecting the internal precision signal processing components and improving the accuracy and reliability of signal transmission. A nickel-based superalloy baffle is installed within the short section, precisely dividing the interior of the mounting sleeve into multiple independent shielded mounting cavities. Each mounting cavity is equipped with a dedicated detection component, enabling accurate detection and independent processing of external geological data, effectively avoiding mutual interference between signals and improving the accuracy and efficiency of data acquisition. The excellent corrosion resistance of the nickel-based superalloy ensures the long-term stable operation of the baffle under harsh conditions. The cap and centralizer short section ensure smooth insertion and stable operation of the probe during drilling, and facilitate subsequent maintenance and replacement. The centralizer short section enhances the alignment and stability of the probe in the wellbore, reducing measurement errors caused by vibration or offset.

[0016] Furthermore, the nickel-based superalloy partition in this probe section cleverly divides the mounting sleeve into five independent mounting chambers, maximizing space utilization and achieving diversified and efficient synergy of detection functions. The central mounting chamber provides an ideal environment for the installation of the rotary sensor. As a key component, the rotary sensor can monitor the rotation status of the probe in real time, providing accurate data for directional control and trajectory correction during drilling. Its central location effectively reduces measurement errors caused by eccentricity or vibration, ensuring the accuracy and reliability of the data. The other four mounting chambers are arranged around the central mounting chamber and respectively house a pressure sensor, azimuth gamma detector one, a temperature sensor, and azimuth gamma detector two, enhancing the structural stability of the probe and ensuring that each detection component is subjected to uniform stress, reducing damage caused by stress concentration. The invention eliminates the risk of interference between different detection components, enabling independent and precise measurement of key parameters such as downhole pressure, temperature, and azimuth gamma radiation, providing comprehensive and detailed data support for geological analysis. The pressure and temperature sensors, as well as azimuth gamma detectors one and two, are symmetrically installed about the rotating sensor, improving the balance and symmetry of data acquisition. This helps eliminate measurement deviations caused by probe position offset or attitude changes, improving data accuracy and repeatability. By comparing data from detection components at different locations, a more detailed analysis and judgment of the downhole environment can be made, providing strong support for drilling decisions. In summary, the measurement-while-drilling (MWD) probe section of this invention, through optimized layout of the nickel-based superalloy partition and configuration of the detection components, achieves multi-dimensional, high-precision, and real-time monitoring of the downhole environment.

[0017] Furthermore, this probe section enhances the overall mechanical strength of the probe by setting threaded posts at both ends of the mounting sleeve and connecting them to the pressure-bearing outer cylinder and the centralizer section respectively. This ensures stable operation in complex downhole environments, simplifies the installation and disassembly process, improves operational efficiency, and provides excellent sealing of the threaded connection, effectively preventing the infiltration of drilling fluid or other fluids and protecting the internal electronic components from damage.

[0018] Furthermore, this probe sub has an iron-cobalt-ruthenium ternary alloy thin film on the inner wall of the mounting cavity inside the mounting sleeve. This film can effectively shield external electromagnetic interference, protect the internal probe components and signal processing components from external signal influence, ensure the accuracy and stability of measurement data, and improve the overall performance of measurement while drilling.

[0019] Furthermore, this probe section is equipped with components such as battery modules and data processing units sequentially from the end furthest from the mounting sleeve. This optimizes space utilization and avoids the impact of electromagnetic interference on sensitive components, enabling the measurement-while-drilling probe section to work stably and efficiently in complex and variable drilling environments, providing accurate and real-time data support for geological exploration.

[0020] Furthermore, this probe sub's power amplification module integrates a signal amplification unit, a bandpass filter unit, and an A / D conversion unit to achieve precise processing and conversion of the probe signal. The signal amplification unit effectively enhances signal strength, ensuring the reliability of long-distance transmission; the bandpass filter unit filters out clutter interference, improving signal purity; and the A / D conversion unit converts analog signals into digital signals, facilitating efficient and accurate analysis and processing by the data processing unit. This significantly improves the accuracy and stability of data transmission, providing strong support for the efficient operation of the measurement-while-drilling probe sub in complex downhole environments.

[0021] Furthermore, this probe section incorporates an aerogel felt between the mounting sleeve and the centralizer section, significantly enhancing the probe's thermal insulation performance in extreme temperature environments. This effectively protects internal electronic components from damage caused by high or low temperatures, ensuring stable operation of the probe under complex well conditions. The centralizer section utilizes a fixed sleeve and centralizing wings, enhancing the probe's stability in the wellbore and reducing measurement errors caused by vibration or deviation. The guiding effect of the centralizing wings further improves the probe's centering and guidance, providing more precise directional control for drilling operations. Together, these improvements enhance the overall performance of the measurement-while-drilling probe section.

[0022] This invention also proposes a method for using a measurement-while-drilling (MWD) probe section. By precisely lowering the probe section and using a centralizer to stabilize it in the center, the detection assembly can accurately capture data from deep wells. Subsequently, an efficient data transmission and signal processing mechanism rapidly amplifies the acquired data and transmits it to the surface, providing real-time and accurate information support for geological analysis. This not only simplifies the operation process and improves work efficiency but also significantly enhances the accuracy and reliability of MWD, bringing significant convenience and benefits to deep well exploration. Attached Figure Description

[0023] Figure 1 A schematic diagram of the structure of a measurement-while-drilling probe section provided by the present invention; Figure 2 This invention provides a schematic diagram of the structure of a sleeve assembly in a drilling measurement probe sub. Figure 3 A cross-sectional structural schematic diagram of a sleeve assembly in a drilling measurement probe section provided by the present invention; Figure 4 A front view schematic diagram of the installation sleeve in a drilling measurement probe section provided by the present invention; Figure 5 A side view of the installation sleeve in a short section of a measurement-while-drilling probe provided by the present invention; In the attached diagram: 1. Sleeve assembly; 2. Battery module; 3. Data processing unit; 4. Wireless receiver; 5. Power amplifier module; 6. Wireless transmitter; 7. Mounting sleeve; 8. Ceramic fiber sleeve; 9. Nickel-based superalloy separator; 10. Pressure sensor; 11. Azimuth gamma detector one; 12. Temperature sensor; 13. Azimuth gamma detector two; 14. Rotation sensor; 15. Centralizer short section. Detailed Implementation

[0024] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0025] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In this invention, unless otherwise explicitly 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, an electrical connection, or a communication 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 invention according to the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0030] like Figures 1-5 As shown, the present invention provides a measurement while drilling (MWD) probe section. The probe section includes a sleeve assembly 1. A protective cap is connected to the left end of the sleeve assembly 1. The protective cap protects the probe section from external substances entering the sensitive parts of the equipment during operation and also prevents the probe section from being affected by mechanical impact or vibration. The left end of the connecting section is connected to the right end of the sleeve assembly 1. A centralizer section 15 is connected to the right end of the connecting section. The connecting section, the sleeve assembly 1 and the centralizer section 15 are axially collinear. like Figure 1As shown, the sleeve assembly 1 includes a pressure-bearing outer cylinder. Connecting flanges are provided at both ends of the pressure-bearing outer cylinder for connecting other short sections. The outer wall of the pressure-bearing outer cylinder is coated with a polytetrafluoroethylene (PTFE) anti-corrosion coating to improve its durability. A self-healing metal coating layer is provided on the inner wall of the pressure-bearing outer cylinder. This self-healing metal coating layer can self-repair minor damage to the pressure-bearing outer cylinder during operation, ensuring the continuity of probe operation and improving work efficiency. A ceramic fiber sleeve 8 is installed inside the pressure-bearing outer cylinder. The outer wall of the ceramic fiber sleeve 8 is fitted to the inner wall of the self-healing metal coating layer. A signal receiver is installed inside the ceramic fiber sleeve 8. The component includes a mounting sleeve 7, with the left end of the mounting sleeve 7 threadedly connected to a pressure-bearing outer cylinder and the other end of the mounting sleeve 7 threadedly connected to a centralizer sub 15. A nickel-based superalloy partition 9 is installed inside the mounting sleeve 7. The nickel-based superalloy partition 9 divides the interior of the mounting sleeve 7 into multiple mounting cavities that can shield external signals. Each mounting cavity independently houses a detection component for detecting external data. When this detection sub is lowered into a deep well, it acquires data from inside the deep well through the detection component, then transmits the data to a signal processing component for processing before transmitting it to the surface, enabling drilling personnel to clearly obtain information about the interior of the deep well. This invention increases the heat insulation of the probe section by setting a ceramic fiber sleeve 8 inside the pressure-bearing outer cylinder, reducing the impact of high temperature inside the deep well on the internal components of the probe section, and improving the high temperature resistance of the probe section. Then, an installation sleeve 7 is connected to the right end of the pressure-bearing outer cylinder to install each component in the detection assembly independently. Then, a nickel-based superalloy partition 9 is used for signal shielding to avoid the interference of signals between the components during operation.

[0031] like Figure 5 As shown, the nickel-based superalloy partition 9 divides the interior of the mounting sleeve 7 into five mounting cavities. One mounting cavity is located at the center of the mounting sleeve 7, and the remaining mounting cavities are arranged at equal intervals around the mounting cavity at the center of the mounting sleeve 7. The mounting cavity above the mounting cavity at the center of the mounting sleeve 7 is symmetrically arranged with the mounting cavity below the mounting cavity at the center of the mounting sleeve 7. The mounting cavity to the left of the mounting cavity at the center of the mounting sleeve 7 is symmetrically arranged with the mounting cavity to the right of the mounting cavity at the center of the mounting sleeve 7. This arrangement can greatly shorten the length of the probe and make it easier to replace after damage.

[0032] like Figures 2-5As shown, the detection assembly includes a pressure sensor 10, an azimuth gamma detector 11, a temperature sensor 12, an azimuth gamma detector 13, and a rotation sensor 14, all of which are connected to the signal processing assembly. The rotation sensor 14 is installed in the mounting cavity at the center of the mounting sleeve 7. The pressure sensor 10, the azimuth gamma detector 11, the temperature sensor 12, and the azimuth gamma detector 13 are installed in other mounting cavities, and are symmetrically installed about the rotation sensor 14. The azimuth gamma detectors 11 and 13 are installed at 180° angles to facilitate more accurate orientation determination.

[0033] like Figure 4 As shown, threaded posts are provided along the axial direction on both ends of the mounting sleeve 7. The threaded post on the left end of the mounting sleeve 7 is connected to the right end of the pressure-bearing outer cylinder, and the threaded post on the right end of the mounting sleeve 7 is connected to the left end of the centralizer short section 15. The threaded posts enable the connecting short section to be easily connected to the centralizer short section 15 and the pressure-bearing outer cylinder, improving the ease of assembly and maintenance of this probe short section.

[0034] To further enhance the high-temperature resistance of the connecting short section, a ternary iron-cobalt-ruthenium alloy thin film is installed on the inner wall of the mounting cavity inside the mounting sleeve 7. The ternary iron-cobalt-ruthenium alloy thin film isolates the high temperature of the deep well, preventing the high temperature from damaging the detection components installed inside the mounting sleeve 7.

[0035] The signal processing component includes a battery module 2, a data processing unit 3, a wireless receiver 4, a wireless transmitter 6, and a power amplifier module 5. The wireless receiver 4, power amplifier module 5, wireless transmitter 6, battery module 2, and data processing unit 3 are installed inside the pressure-bearing outer cylinder and are installed sequentially from the end furthest from the mounting sleeve 7. The battery module 2 is electrically connected to the data processing unit 3, wireless receiver 4, pressure sensor 10, azimuth gamma detector 11, temperature sensor 12, azimuth gamma detector 2 13, rotation sensor 14, wireless transmitter 6, and power amplifier module 5. The pressure sensor 10, azimuth gamma detector 11, rotation sensor 14, temperature sensor 12, and azimuth gamma detector 2 13 are signal-connected to the wireless transmitter 6, the wireless transmitter 6 is signal-connected to the power amplifier module 5, the power amplifier module 5 is signal-connected to the data processing unit 3, the data processing unit 3 is signal-connected to the wireless receiver 4, and the wireless receiver 4 is signal-connected to the ground signal controller.

[0036] The wireless transmitter 6 includes a control circuit unit, an electromagnetic wave transmitting unit, a data modulation unit, and a power amplification unit. The control circuit unit is signal-connected to the pressure sensor 10, azimuth gamma detector 11, rotation sensor 14, temperature sensor 12, and azimuth gamma detector 13, respectively, to control the deep well interior data acquired by these sensors. The acquired deep well interior data is then transmitted to the electromagnetic wave transmitting unit for processing. The electromagnetic wave transmitting unit is signal-connected to the data modulation unit, which in turn is signal-connected to the power amplification unit, which is signal-connected to the power amplification module 5. The main function of the electromagnetic wave transmitting unit is to convert electrical signals into electromagnetic waves. It typically includes an oscillator, an amplifier, and an antenna. The oscillator generates a continuous carrier signal, which is the basis for data transmission. The amplifier amplifies the weak carrier signal generated by the oscillator to sufficient power for transmission through the antenna. The antenna is responsible for converting electrical signals into electromagnetic waves and radiating them into the surrounding space; the data modulation unit is responsible for converting raw data (usually digital signals) from a data source (such as a sensor) into a format suitable for transmission on a carrier wave. Modulation can be done in different ways, including amplitude modulation (AM), frequency modulation (FM), or phase modulation (PM); the modulation process combines the data signal with the carrier signal for efficient transmission over the wireless channel. Modulation allows for efficient use of spectrum resources and improves the reliability and efficiency of communication; the power amplification unit increases the signal power to a level sufficient to cover the required communication distance. In probe applications, additional power is needed to ensure signal strength due to signal attenuation.

[0037] Battery module 2 includes a battery, a charging circuit, and a voltage regulator. The battery is electrically connected to data processing unit 3, wireless receiver 4, pressure sensor 10, azimuth gamma detector 11, temperature sensor 12, azimuth gamma detector 2 13, rotation sensor 14, wireless transmitter 6, and power amplifier module 5, providing a stable power supply to these components.

[0038] The power amplifier module 5 includes a signal amplification unit, a bandpass filter unit, and an A / D conversion unit. The signal amplification unit is connected to the bandpass filter unit and the wireless transmitter 6. The bandpass filter unit is connected to the A / D conversion unit, and the A / D conversion unit is connected to the data processing unit 3. The main function of the signal amplification unit is to amplify the received weak signal (which may come from a sensor or other receiving device) to a sufficient power level for efficient transmission. The bandpass filter unit allows signals within a specific frequency range to pass through while blocking signals of other frequencies. For the power amplifier module in the probe section, the bandpass filter ensures that only signals of specific frequencies are amplified, thereby reducing unnecessary noise and interference. The A / D conversion unit converts analog signals (such as voltage or current signals from sensors) into digital signals, which are more suitable for calculation, storage, and processing.

[0039] A multi-layered strain gauge is installed inside the mounting sleeve 7 near its right end. This multi-layered strain gauge provides higher mechanical strength and durability, making it suitable for extreme environments with high temperatures and pressures. It can measure ambient pressure. An aerogel felt is installed between the mounting sleeve 7 and the centralizer section 15. This aerogel felt completely wraps around the inside of the probe, effectively insulating it and extending the operating time of the sensors inside. The aerogel felt also provides some vibration damping within the probe.

[0040] The centralizer section includes a fixed sleeve, and a centralizing wing is provided on the outer wall of the fixed sleeve. One end of the fixed sleeve is connected to the mounting sleeve 7.

[0041] The present invention also provides a method for using a measurement-while-drilling (MWD) probe sub, which, based on the above-mentioned probe sub, includes the following steps; Step 1: Lower the probe section into the deep well and use the centralizing wing in the centralizer section to centralize the well. Step 2: The ground signal controller sends a control signal to control the control circuit unit to work. The control circuit unit controls the pressure sensor, azimuth gamma detector 1, temperature sensor, azimuth gamma detector 2, and rotation sensor to acquire deep well internal data, and then transmits the acquired deep well internal data to the wireless transmitter. Step 3: The wireless transmitter amplifies the data inside the deep well, then transmits it to the power amplifier module for further amplification, then to the data processing unit for processing, and finally transmits the data to the wireless receiver, which then transmits the signal to the ground signal controller.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. A short section for measurement while drilling, characterized in that, Includes a sleeve assembly (1), one end of which is connected to a protective cap, and the other end of which is connected to one end of a connecting short section, and the other end of which is connected to a centralizer short section (15). The sleeve assembly (1) includes a pressure-bearing outer cylinder, and a ceramic fiber sleeve (8) is installed inside the pressure-bearing outer cylinder. The outer wall of the ceramic fiber sleeve (8) is in contact with the inner wall of the pressure-bearing outer cylinder. A signal processing component is installed inside the ceramic fiber sleeve (8). The connecting section includes an installation sleeve (7), one end of which is threaded to the pressure-bearing outer cylinder, and the other end of which is threaded to the centralizer section (15). The mounting sleeve (7) is equipped with a nickel-based superalloy partition (9); the nickel-based superalloy partition (9) divides the interior of the mounting sleeve (7) into multiple mounting cavities that can shield external signals, and each mounting cavity is independently equipped with a detection component for detecting external data.

2. The measurement-while-drilling (MWD) probe sub according to claim 1, characterized in that, The nickel-based superalloy partition (9) divides the interior of the mounting sleeve (7) into five mounting cavities, one of which is located at the center of the mounting sleeve (7), and the remaining mounting cavities are arranged around the mounting cavity at the center of the mounting sleeve (7).

3. The measurement-while-drilling (MWD) probe sub according to claim 2, characterized in that, The detection assembly includes a pressure sensor (10), an azimuth gamma detector one (11), a temperature sensor (12), an azimuth gamma detector two (13), and a rotation sensor (14), all of which are connected to the signal processing assembly. The rotation sensor (14) is installed in the mounting cavity at the center of the mounting sleeve (7). The pressure sensor (10), the azimuth gamma detector one (11), the temperature sensor (12), and the azimuth gamma detector two (13) are installed in other mounting cavities, and the pressure sensor (10), the temperature sensor (12), the azimuth gamma detector one (11), and the azimuth gamma detector two (13) are symmetrically installed about the rotation sensor (14).

4. The measurement-while-drilling (MWD) probe sub according to claim 1, characterized in that, The mounting sleeve (7) has threaded posts at both ends, and the threaded post at one end of the mounting sleeve (7) is connected to the pressure-bearing outer cylinder, while the threaded post at the other end of the mounting sleeve (7) is connected to the centralizer short section (15).

5. The measurement-while-drilling (MWD) probe sub according to claim 1, characterized in that, A ternary alloy film of iron, cobalt, and ruthenium is provided on the inner wall of the mounting cavity inside the mounting sleeve (7).

6. The measurement-while-drilling (MWD) probe sub according to claim 3, characterized in that, The signal processing component includes a battery module (2), a data processing unit (3), a wireless receiver (4), a wireless transmitter (6), and a power amplifier module (5); the wireless receiver (4), the power amplifier module (5), the wireless transmitter (6), the battery module (2), and the data processing unit (3) are installed inside the pressure-bearing outer cylinder and are installed sequentially from the end away from the mounting sleeve (7); The battery module (2) is electrically connected to the data processing unit (3), the wireless receiver (4), the pressure sensor (10), the first azimuth gamma detector (11), the temperature sensor (12), the second azimuth gamma detector (13), the rotation sensor (14), the wireless transmitter (6), and the power amplifier module (5). The pressure sensor (10), the first azimuth gamma detector (11), the rotation sensor (14), the temperature sensor (12), and the second azimuth gamma detector (13) are respectively connected to the wireless transmitter (6). The wireless transmitter (6) is connected to the power amplifier module (5). The power amplifier module (5) is connected to the data processing unit (3). The data processing unit (3) is connected to the wireless receiver (4). The wireless receiver (4) is connected to the ground signal controller.

7. A measurement-while-drilling (MWD) probe sub according to claim 6, characterized in that, The power amplification module (5) includes a signal amplification unit, a bandpass filter unit, and an A / D conversion unit. The signal amplification unit is signal-connected to the bandpass filter unit and the wireless transmitter (6). The bandpass filter unit is signal-connected to the A / D conversion unit. The A / D conversion unit is signal-connected to the data processing unit (3).

8. The measurement-while-drilling (MWD) probe sub according to claim 1, characterized in that, An aerogel felt is provided between the mounting sleeve (7) and the straightener section (15).

9. A measurement-while-drilling (MWD) probe sub according to claim 1, characterized in that, The straightener section includes a fixing sleeve, and a straightening wing is provided on the outer wall of the fixing sleeve. One end of the fixing sleeve is connected to the mounting sleeve (7).

10. A method for using a measurement-while-drilling (MWD) probe sub, based on the probe sub according to any one of claims 1 to 9, comprising the following steps; Step 1: Lower the probe section into the deep well and straighten it using the centralizer section; Step 2: Control the detection component to acquire data from inside the deep well and transmit the data to the signal processing component; Step 3: The signal processing component amplifies the data inside the deep well and transmits it to the surface.

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