Testing device for azimuth resistivity while drilling

Abstract

The invention relates to the field of soil layer or rock drilling, in particular to a while-drilling azimuth resistivity testing device which comprises a drill bit, azimuth resistivity measuring equipment is arranged in the drill bit, the drill bit is further communicated with a drill collar, and a testing unit used for conducting scale calibration on the resistivity measuring equipment is arranged in the drill collar. The current end and the test end are activated through the controller, the current end inputs a current signal into an electrical loop and simulates the process that the emitting electrode emits current to the stratum, the resistivity measurement equipment receives the current signal, the current change is measured through the receiving electrode, and the resistivity change of the simulated stratum is reflected. And the test unit is periodically started to carry out calibration test on the resistivity measurement equipment, so that test data under different resistance conditions can be rapidly and periodically obtained through multiple times of measurement and adjustment of the position change of the sliding block, and the accuracy of calibration test data is improved.

Description

Technical Field

[0001] The invention relates to the field of soil layer or rock drilling, and in particular to a device for testing azimuthal resistivity while drilling. Background Art

[0002] In geological exploration, resistivity logging is one of the commonly used detection methods. The properties of different strata are identified by measuring resistivity. Resistivity measurement while drilling plays a vital role in the exploration and development of resources such as oil and natural gas. Among them, the resistivity measurement while drilling instrument measures the resistivity / conductivity of the strata near the wellbore, and uses the resistivity difference of the strata to identify and divide different oil, gas and water layers. It can upload data to the surface during the drilling process to help drillers optimize and adjust the trajectory, ensure that the wellbore accurately hits the reservoir and passes through the best position in the reservoir that is conducive to oil and gas production. At the same time, in order to ensure the accuracy and reliability of resistivity measurement while drilling, the measurement system needs to be calibrated regularly.

[0003] However, the common technical means for while-drilling measurement calibration usually have some problems in daily use. With the development of science and technology, technicians in related fields have also optimized the technical means for while-drilling measurement calibration in large quantities. In order to make a more accurate comparison, for example, the Chinese patent with publication number CN114442193A discloses a while-drilling lateral imaging resistivity instrument calibration device and method, which includes a port, a formation environment simulation module and an annular drilling fluid simulation module, etc. When in use, the while-drilling lateral imaging resistivity instrument calibration device and method provided connect the calibration device port with the electrode according to the current loop relationship between the transmitting electrode and the receiving electrode and the formation, simulate the electrical environment of the formation where the downhole instrument is located on the ground, flexibly change the contribution value of the formation and mud resistivity around the instrument, realize the verification test of the function of the while-drilling lateral imaging resistivity instrument in the workshop or drilling site, and calibrate the relationship between the instrument measurement signal and the formation resistivity, so as to realize the rapid calibration of the while-drilling lateral imaging resistivity instrument, and the device is compact and portable, which improves flexibility.

[0004] However, the above resistivity calibration device has some shortcomings in actual use. The above-mentioned device controls the analog unit to adjust and switch through the linkage device and the gear switching device, so as to realize the calibration effect of the downhole resistivity instrument in multiple gears. During use, since its multi-gear switching method needs to drive the resistance network in the analog unit to form an electrical circuit in parallel or in series, the design of the resistance network and the control technology of the linkage device are highly complex, requiring professional technicians to operate and maintain. In addition, switching of multiple gears means that more electrical components need to be deployed, which will undoubtedly lead to an increase in equipment cost. At the same time, since the resistance network is connected in parallel or in series between each gear during use, it will also lead to an increase in the access resistance and contact resistance in the electrical circuit, affecting the accuracy of the calibration result.

[0005] Therefore, based on the above-stated viewpoint, there is still room for improvement in the existing technical means for resistivity calibration testing. Summary of the invention

[0006] In order to solve the above problems, the present invention provides a device for testing azimuthal resistivity while drilling, including a drill bit, wherein the drill bit has an azimuthal resistivity measuring device built therein, and the drill bit is also connected to a drill collar, wherein a test unit for calibrating the resistivity measuring device is arranged in the drill collar.

[0007] The test unit comprises: There are at least two mounting plates, which are spaced apart along the axial direction of the drill collar; A port is provided on one of the mounting plates near the drill bit, and is used to electrically connect to a resistivity measuring device on the drill bit, so as to achieve the effect of regularly calibrating and testing the resistivity measuring device; The formation environment simulation component is arranged between the two mounting plates and is used to simulate the resistance condition characteristics under different formation environments during the test process to complete the calibration test of the resistivity measurement equipment.

[0008] Preferably, the formation environment simulation component includes a resistance simulation terminal connected to one of the mounting plates, the resistance simulation terminal is electrically connected to the resistivity measuring device through a port, and the resistance simulation terminal is also electrically connected to the current terminal and the test terminal to form an electrical circuit required for testing the resistivity measuring device.

[0009] Preferably, the resistance simulation end includes a resistance module connected to an upper limit on the mounting plate, the resistance module is electrically connected to the resistivity measuring device through a port, an adjustment slider is connected to the upper limit of the resistance module, one end of the adjustment slider and the resistance module are electrically connected to the test end, and an electrical circuit of a series configuration is formed between the test end, the adjustment slider and a section of the resistance module.

[0010] Preferably, extension blocks connected to the mounting plate are symmetrically extended at both ends of the resistance module, and a driven slider is connected to the end of the adjustment slider away from the resistance module. An adjustment screw is passed through the two extension blocks and the driven slider, and the adjustment screw and the driven slider are threadedly connected.

[0011] Preferably, the driven slider and the extension block are both made of insulating materials.

[0012] Preferably, the current end includes a battery module connected to a limit position on a mounting plate away from the drill bit, which is used to provide the test current required for the test. The two ends of the battery module are electrically connected to the two ends of the resistance module respectively, and the battery module is connected to a controller for configuring the required test current.

[0013] Preferably, the outer side of the battery module is also electrically connected to a power storage module, and the power storage module is controlled by a controller to supplement electric energy for the battery module.

[0014] Preferably, the electricity storage module is limit-connected to one of the mounting plates and is arranged in a ring structure.

[0015] Preferably, a connecting support column is commonly connected between the battery module and the test end to limit the installation of the test end.

[0016] Preferably, the two mounting plates are provided with a plurality of connecting pipes to facilitate the introduction of drilling fluid to the drill bit during the drilling process.

[0017] In summary, the present application includes at least one of the following beneficial technical effects: 1. After the resistivity measuring device is electrically connected to the test unit, the present invention activates the current end and the test end through the controller, the current end inputs a current signal into the electrical circuit to simulate the process of the transmitting electrode transmitting current to the formation, the resistivity measuring device receives the current signal, and measures the current change through the receiving electrode to reflect the resistivity change of the simulated formation. In this process, different positions of the slider on the resistance module are adjusted to correspond to different resistance values, thereby simulating different formation resistance environments. The test end measures and records the circuit signals at the resistance simulation end and the resistivity measuring device measurement point, and the resistivity measuring device is calibrated and tested by regularly starting the test unit, so that the test data under different resistance conditions can be obtained quickly and regularly through multiple measurements and adjustments of the slider position changes, thereby improving the accuracy of the calibration test data.

[0018] 2. The present invention recovers the waste heat generated during the drilling process of the drill bit and converts it into electrical energy. It can provide stable electrical energy for the test unit during the while-drilling calibration test, realize self-power supply of the test unit, reduce dependence on external power supply, avoid the influence of external power supply fluctuation on test results, and improve the accuracy and stability of the calibration test. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 It is a structural schematic diagram of the test unit of the present invention.

[0022] Figure 3 It is a structural schematic diagram of the formation environment simulation component of the present invention.

[0023] Figure 4 It is a structural schematic diagram of the current end of the present invention.

[0024] Figure 5 It is a structural schematic diagram of the resistance simulation terminal of the present invention.

[0025] Figure 6 It is a structural schematic diagram of the power supply end of the present invention.

[0026] Figure 7 It is a schematic structural diagram of the heat conducting rod of the present invention.

[0027] Figure 8 It is a schematic structural diagram of the heat-conducting groove of the present invention.

[0028] In the figure, 1, drill bit; 10, drill collar; 2, test unit; 20, mounting plate; 21, port; 22, formation environment simulation component; 220, resistance simulation end; 2201, resistance module; 2202, adjustment slider; 2203, extension block; 2204, driven slider; 2205, adjustment screw; 221, current end; 2210, battery module; 2211, power storage module; 222, test end; 23, connecting support column; 24, connecting through pipe; 25, power supply end; 250, temperature variable power generation module; 251, heat conducting rod; 252, heat conducting ring; 253, cooler; 254, heat conducting groove. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1 To Attachment Figure 8 Embodiments of the present invention are described in detail.

[0030] The embodiment of the present application discloses a device for testing azimuthal resistivity while drilling, which explains that the test device is mainly used in the process of calibrating and testing resistivity measuring equipment, and achieves the effect of calibrating and testing the resistivity equipment in terms of technical effect; in particular, during the calibration test, after the resistivity equipment is electrically connected to the device, different formation resistance conditions are simulated by the resistance simulation end to complete the effect of calibrating and testing the resistivity equipment under different resistance conditions; further, the test device also recovers and converts the waste heat generated during the drilling process of the drill bit into electrical energy, and can provide stable electrical energy for the test unit during the calibration test while drilling, thereby realizing self-power supply of the test unit, reducing dependence on an external power supply, and avoiding the influence of external power supply fluctuations on the test results.

[0031] Example 1: Reference Figure 1 and Figure 2 As shown, a device for testing azimuth resistivity while drilling includes a drill bit 1, a resistivity measuring device is built in the drill bit 1, a drill collar 10 is also connected to the drill bit 1, and a test unit 2 for calibrating the resistivity measuring device is arranged in the drill collar 10. When in use, the test unit 2 is periodically activated to perform a calibration test on the resistivity measuring device in the drill bit 1, thereby achieving the effect of quickly and regularly calibrating the resistivity measuring device.

[0032] It should be noted that the drill bit 1 has a built-in conventional resistivity measurement device while drilling, which has an azimuth measurement function and includes a transmitting electrode and a receiving electrode. The transmitting electrode injects current into the formation inside the drill bit 1, and the current then returns through the receiving electrode to form a measurement loop. The current change measured on the receiving electrode can reflect the change in the resistivity of the formation. Both the transmitting electrode and the receiving electrode can be configured in an array form to obtain measurement curves at different depths, or generate images with azimuth recognition capabilities.

[0033] Reference Figures 2 to 4 As shown, a test unit 2 is used to calibrate the resistivity measuring device; specifically, the test unit 2 includes: At least two mounting plates 20 are provided and are distributed along the axial direction of the drill collar 10 at intervals. A mounting cavity is formed between the two mounting plates 20 and the drill collar 10 to facilitate calibration testing of the resistivity measuring device.

[0034] The port 21 is arranged on one of the mounting plates 20 close to the drill bit 1, and is used to be electrically connected to the resistivity measuring device on the drill bit 1, so as to achieve the effect of regularly calibrating and testing the resistivity measuring device.

[0035] The formation environment simulation component 22 is arranged between the two mounting plates 20 and is used to simulate the resistance condition characteristics under different formation environments during the test process to complete the calibration test of the resistivity measurement equipment.

[0036] Reference Figures 3 to 5 As shown, it is used to simulate the resistance condition characteristics under different formation environments during the test process; specifically, the formation environment simulation component 22 includes a resistance simulation terminal 220 connected to one of the mounting plates 20, and the resistance simulation terminal 220 is electrically connected to the resistivity measuring device through the port 21. The resistance simulation terminal 220 is also electrically connected to the current terminal 221 and the test terminal 222 to form an electrical circuit required for testing the resistivity measuring device. It should be noted that the test terminal 222 is a measuring instrument for measuring circuit signals such as voltage, current and resistance in the electrical circuit.

[0037] When in use, after the resistivity measuring device is connected to the port 21, the current terminal 221 and the test terminal 222 accordingly, the current signal is input into the entire electrical circuit by controlling the current terminal 221, and then different resistance condition characteristics are formed by adjusting the control resistance simulation terminal 220. At this time, the circuit signal at the resistance simulation terminal 220 and the resistivity measuring device measurement point is measured and recorded through the test terminal 222, thereby achieving the effect of calibrating the resistivity measuring device under different resistance condition characteristics.

[0038] Reference Figures 3 to 5 As shown, the resistance simulation terminal 220 includes a resistance module 2201 connected to the upper limit of the mounting plate 20, the resistance module 2201 is electrically connected to the resistivity measuring device through the port 21, an adjusting slider 2202 is connected to the upper limit of the resistance module 2201, and one end of the adjusting slider 2202 and the resistance module 2201 are both electrically connected to the test terminal 222, and a series-configured electrical circuit is formed between the test terminal 222, the adjusting slider 2202, a section of the resistance module 2201 and the resistivity measuring device.

[0039] During use, after the resistivity measuring device is electrically connected to the port 21 to form an electrical circuit, the adjusting slider 2202 is driven to slide and adjust on the resistance module 2201. At this time, the electrical signals between the adjusting slider 2202, a section of the resistance module 2201 and the resistivity measuring device are tested and recorded through the test end 222 when the adjusting slider 2202 slides at different positions on the resistance module 2201, so as to complete the calibration test effect of the resistivity measuring device. At the same time, through multiple measurement calibrations, the accuracy of the results after the calibration test of the resistivity measuring device is effectively guaranteed.

[0040] Reference Figures 4 to 6As shown, extension blocks 2203 connected to the mounting plate 20 are symmetrically extended at both ends of the resistance module 2201, and the end of the adjusting slider 2202 away from the resistance module 2201 is connected to the driven slider 2204, and an adjusting screw 2205 is commonly penetrated between the two extension blocks 2203 and the driven slider 2204, and the adjusting screw 2205 and the driven slider 2204 are threadedly connected.

[0041] When in use, by rotating the adjusting screw 2205, the driven slider 2204 will move axially along its thread, and simultaneously drive the adjusting slider 2202 to slide on the resistance module 2201, so as to achieve precise adjustment of the positions of the driven slider 2204 and the adjusting slider 2202, thereby achieving the purpose of adjusting the resistance value between the resistance module 2201, the test end 222 and the adjusting slider 2202.

[0042] Further, refer to Figures 4 to 6 As shown, since it is necessary to form an electrical circuit between the resistance module 2201, the adjustment slider 2202, the test terminal 222, the resistivity measuring device and the current terminal 221, and to complete the calibration test of the resistivity measuring device by detecting the electrical signal in the electrical circuit, in order to avoid connecting additional contact resistance in the electrical circuit and affecting the accuracy of the calibration result, the driven slider 2204 and the extension block 2203 are correspondingly made of insulating materials, and all the above-mentioned electrical connection wires are preferably low-resistance shielded wires.

[0043] Reference Figures 4 to 6 As shown, the current end 221 includes a battery module 2210 connected to the upper limit of a mounting plate 20 away from the drill bit 1, which is used to provide the test current required for the test. The two ends of the battery module 2210 are electrically connected to the two ends of the resistance module 2201 accordingly. Specifically, the positive electrode of the battery module 2210 is connected to one end of the resistance module 2201, and the negative electrode of the battery module 2210 is connected to the other end of the resistance module 2201, thereby forming a complete current output and input loop between the battery module 2210 and the resistance module 2201. The battery module 2210 is electrically connected to a controller for configuring the required test current.

[0044] When in use, the battery module 2210 is used as a current source, and then the controller controls the battery module 2210 to output the test current to ensure stable current output during the test. At the same time, the battery module 2210 can avoid dependence on an external power supply as much as possible, and is suitable for use at the drilling site. The battery module 2210 can provide a stable current output to ensure the accuracy of the test results.

[0045] Reference Figures 4 to 6As shown, the battery module 2210 is also electrically connected to a power storage module 2211 on the outside, and the power storage module 2211 is controlled by the controller to supplement the power of the battery module 2210. When in use, when the voltage of the battery module 2210 drops below a preset threshold, the controller will automatically activate the power storage module 2211 to charge the battery module 2210, and flexibly adjust the output current of the power storage module 2211 according to the real-time status of the battery module 2210, so as to accurately control the charging speed and effectively prevent the battery from overheating or damage caused by over-fast charging; when the voltage of the battery module 2210 reaches a fully charged state, the controller stops the charging process.

[0046] During the test, the controller controls the battery module 2210 to supply power to the resistivity measuring device. When the voltage of the battery module 2210 is lower than a certain value, the controller starts the power storage module 2211 to provide additional power. At the same time, the controller monitors the discharge current to ensure that the current is within a safe range. If the current exceeds the safety threshold, the controller will start the safety protection mechanism, such as limiting the current output or stopping the power supply.

[0047] Reference Figures 4 to 6 As shown, the power storage module 2211 is limitedly connected to one of the mounting plates 20 and is arranged in a ring structure.

[0048] Reference Figures 4 to 6 As shown, a connecting support column 23 is commonly connected between the battery module 2210 and the test end 222 to limit the installation of the test end 222, and the connecting support column 23 is also preferably made of insulating material.

[0049] Reference Figures 4 to 6 As shown, the two mounting plates 20 are provided with a plurality of connecting pipes 24 so that the drilling fluid can be introduced into the drill bit 1 during the drilling process.

[0050] Example 2: Reference Figures 6 to 8As shown, on the basis of the first embodiment, since it is necessary to calibrate the resistivity measuring equipment in the drill bit 1 regularly while drilling, in order to improve the accuracy and stability during the calibration test while drilling, a power supply end 25 is electrically connected to the outside of the power storage module 2211, and the power supply end 25 includes a plurality of temperature-variable power generation modules 250 circumferentially limited on the drill collar 10, and the temperature-variable power generation module 250 is connected to a heat-conducting rod 251, and all the heat-conducting rods 251 are connected to a heat-conducting ring 252 at one end away from the temperature-variable power generation module 250 connected thereto. The medium temperature variable power generation module 250 is made of thermoelectric material, and the heat conductive rod 251 and the heat conductive ring 252 are preferably made of thermoelectric material with good thermal conductivity. The side of the temperature variable power generation module 250 away from the connected heat conductive rod 251 is connected to a cooler 253 penetrated on one of the mounting plates 20 away from the drill bit 1. The drill collar 10 is preferably made of a material with a certain thermal insulation ability. A heat conductive groove 254 is formed on the drill collar 10 corresponding to the heat conductive ring 252 so that the heat conductive ring 252 can contact with the formation environment, thereby realizing heat conduction.

[0051] When used under normal circumstances, after the drill bit 1 drills to a certain depth underground, as the drill bit 1 continues to drill, the continuous friction between the drill bit 1 and the underground formation generates a large amount of excess heat. At this time, the staff needs to pump drilling fluid into the drill string (mainly composed of the drill bit 1 at the front end, the drill collar 10 and a number of drill rods) through external equipment. The lower temperature drilling fluid contacts the high-temperature drill bit 1 and takes away part of the heat on the drill bit 1 and enters the formation. The drilling fluid absorbs heat to reduce the temperature of the drill bit 1 and prevent the drill bit 1 from overheating and damage. The flow of the drilling fluid also plays a lubricating role, reducing the friction between the drill bit 1 and the formation, further reducing the generation of heat.

[0052] At this time, a large amount of heat generated between the drill bit 1 and the formation contacts the heat-conducting ring 252 and the heat-conducting rod 251, and then conducts the high heat to the temperature-variable power generation module 250 and the cooler 253 along the heat-conducting ring 252 and the heat-conducting rods 251. Since the cooler 253 contacts the drilling fluid with a lower temperature in the drill collar 10, the high heat conducted from the heat-conducting rod 251 and the temperature-variable power generation module 250 is cooled by the drilling fluid with a lower temperature. In this process, the temperature-variable power generation module 250 has high heat conducted on one side and contacts the drilling fluid with a lower temperature in the drill collar 10 on the other side, thereby forming a temperature difference. The temperature-variable power generation module 250 converts the temperature difference into electrical energy and outputs direct current. Under the control of the controller, the power storage module 2211 and the current terminal 221 are powered. During use, the heat energy that was originally wasted is recycled and utilized, and partial self-power supply is achieved during the drilling process, reducing dependence on external power supplies, reducing energy consumption and carbon emissions, and improving energy utilization efficiency.

[0053] Further, refer to Figures 6 to 8As shown, the drilling fluid discharged into the formation through the drill bit 1 also has a certain amount of heat due to the contact with the high-temperature drill bit 1. After the drilling fluid discharged into the formation contacts the heat-conducting ring 252 on the drill collar 10, the heat in the drilling fluid is directly contacted with the heat-conducting ring 252, thereby effectively increasing the heat transfer efficiency between the heat-conducting ring 252, the heat-conducting rod 251 and the temperature-variable power generation module 250. At this time, in order to further increase the heat transfer rate between the heat-conducting ring 252 and the drilling fluid discharged into the formation, the heat-conducting ring 252 is set as a spiral ring structure to increase the heat transfer area between the heat-conducting ring 252 and the drilling fluid discharged into the formation.

[0054] Further, refer to Figures 6 to 8 As shown, the cooler 253 is a bent structure, and its vertical section is connected to the temperature-variable power generation module 250. At the same time, its vertical section and the bent section are penetrated by a connected mounting plate 20. A plurality of through grooves are evenly formed on the bent section of the cooler 253, which are used to increase the heat transfer area between the cooler 253 and the drilling fluid in the drill collar 10, thereby increasing the efficiency of the temperature-variable power generation module 250 in generating electricity using temperature difference.

[0055] During operation: Step 1: Connect the azimuth resistivity measuring device built into the drill bit 1 to the electrical connection part (resistance simulation terminal 220, current terminal 221 and test terminal 222) of the test unit 2 through the port 21 to form an electrical circuit required for the test.

[0056] Step 2: Activate the current terminal 221 and the test terminal 222 through the controller. The current terminal 221 inputs a current signal into the electrical circuit to simulate the process of the transmitting electrode transmitting current to the formation. The resistivity measuring device receives the current signal and measures the current change through the receiving electrode to reflect the resistivity change of the simulated formation.

[0057] Step 3: Adjust the slider 2202 to different positions on the resistance module 2201 to correspond to different resistance values, thereby simulating different formation resistance environments. The test end 222 measures and records the circuit signals at the resistance simulation end 220 and the resistivity measurement device to complete the calibration test of the resistivity measurement device. By measuring and adjusting the position of the slider 2202 for multiple times, the test data under different resistance conditions are obtained to improve the accuracy of the calibration test data.

[0058] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered as exemplary and non-restrictive in all respects.

[0059] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A device for testing azimuthal resistivity while drilling, comprising a drill bit (1), characterized in that: The drill bit (1) is equipped with an azimuthal resistivity measuring device. The drill bit (1) is also connected to a drill collar (10). The drill collar (10) is provided with a test unit (2) for calibrating the resistivity measuring device, wherein: The testing unit (2) comprises: At least two mounting plates (20) are provided and are distributed at intervals along the axial direction of the drill collar (10); A port (21) is arranged on one of the mounting plates (20) close to the drill bit (1), and is used to electrically connect to a resistivity measuring device on the drill bit (1) so as to achieve the effect of regularly calibrating and testing the resistivity measuring device; The formation environment simulation component (22) is arranged between the two mounting plates (20) and is used to simulate the resistance condition characteristics under different formation environments during the test process to complete the calibration test of the resistivity measurement equipment.

2. The device for testing azimuthal resistivity while drilling according to claim 1, characterized in that: The formation environment simulation component (22) comprises a resistance simulation terminal (220) connected to one of the mounting plates (20); the resistance simulation terminal (220) is electrically connected to the resistivity measurement device via the port (21); the resistance simulation terminal (220) is also electrically connected to a current terminal (221) and a test terminal (222) to form an electrical circuit required for testing the resistivity measurement device.

3. A device for testing azimuthal resistivity while drilling according to claim 2, characterized in that: The resistance simulation terminal (220) comprises a resistance module (2201) connected to the upper limit of the mounting plate (20); the resistance module (2201) is electrically connected to the resistivity measuring device via the port (21); an adjustment slider (2202) is connected to the upper limit of the resistance module (2201); one end of the adjustment slider (2202) and the resistance module (2201) are both electrically connected to the test terminal (222); and a series-connected electrical circuit is formed between the test terminal (222), the adjustment slider (2202) and a section of the resistance module (2201).

4. The device for testing azimuthal resistivity while drilling according to claim 3, characterized in that: Extension blocks (2203) connected to the mounting plate (20) are symmetrically extended from both ends of the resistance module (2201); an end of the adjustment slider (2202) away from the resistance module (2201) is connected to a driven slider (2204); an adjustment screw (2205) is provided between the two extension blocks (2203) and the driven slider (2204); and the adjustment screw (2205) and the driven slider (2204) are threadedly connected.

5. The device for testing azimuthal resistivity while drilling according to claim 4, characterized in that: The driven slider (2204) and the extension block (2203) are both made of insulating materials.

6. The device for testing azimuthal resistivity while drilling according to claim 3, characterized in that: The current end (221) comprises a battery module (2210) connected to an upper limit position of a mounting plate (20) away from the drill bit (1), and is used to provide a test current required for the test. The two ends of the battery module (2210) are electrically connected to the two ends of the resistance module (2201) respectively. The battery module (2210) is connected to a controller for configuring the required test current.

7. The device for testing azimuthal resistivity while drilling according to claim 6, characterized in that: The battery module (2210) is also electrically connected to an electric storage module (2211) on the outside, and the electric storage module (2211) is controlled by a controller to supplement electric energy for the battery module (2210).

8. The device for testing azimuthal resistivity while drilling according to claim 7, characterized in that: The electricity storage module (2211) is positionally connected to one of the mounting plates (20) and is arranged in a ring structure.

9. The device for testing azimuthal resistivity while drilling according to claim 6, characterized in that: A connecting support column (23) is commonly connected between the battery module (2210) and the test end (222) to limit the installation of the test end (222).

10. The device for testing azimuthal resistivity while drilling according to claim 1, characterized in that: The two mounting plates (20) are provided with a plurality of connecting pipes (24) so ​​that the drilling fluid can be introduced into the drill bit (1) during the drilling process.

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