A device for testing azimuthal resistivity while drilling

Abstract

The present invention relates to the field of drilling soil or rock, and in particular to a device for testing azimuthal resistivity while drilling. The device comprises a drill bit, wherein an azimuthal resistivity measuring device is built in the drill bit, and a drill collar is connected to the drill bit, wherein a test unit for calibrating the resistivity measuring device is provided in the drill collar. The device activates a current terminal and a test terminal through a controller, wherein the current terminal inputs a current signal into an electrical circuit to simulate a process in which a transmitting electrode transmits current to a formation, wherein the resistivity measuring device receives the current signal and measures current changes through the receiving electrode to reflect resistivity changes of the simulated formation. The device is calibrated by regularly starting the test unit, thereby achieving rapid and regular acquisition of test data under different resistance conditions by repeatedly measuring and adjusting the position of a slider, thereby improving the accuracy of the calibrated test data.

Description

Technical Field

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

[0002] In geological exploration, resistivity logging is a commonly used detection method. Resistivity measurement is used to identify the properties of different strata by measuring resistivity. Resistivity measurement while drilling (LWD) plays a vital role in the exploration and development of resources such as oil and natural gas. Resistivity measurement instruments measure the resistivity / conductivity of strata near the wellbore, using resistivity differences to identify and delineate different oil, gas, and water layers. These instruments can upload data to the surface during drilling, helping drillers optimize and adjust their trajectory, ensuring the wellbore accurately hits the reservoir and penetrates the optimal location within the reservoir conducive to oil and gas extraction. To ensure the accuracy and reliability of LWD resistivity measurements, the measurement system requires regular calibration.

[0003] However, common techniques for measuring while drilling (MWD) calibration often have some problems in daily use. With the development of science and technology, technicians in related fields have also made a lot of optimizations to the techniques for measuring while drilling (MWD) calibration. In order to make more accurate comparisons, for example, the Chinese patent publication No. CN114442193A discloses a device and method for calibrating a MWD lateral imaging resistivity instrument, which includes a port, a formation environment simulation module, and an annular drilling fluid simulation module. When in use, the device and method connect the port of the calibration device to the electrodes according to the current loop relationship between the transmitting electrode and the receiving electrode and the formation, simulating the electrical environment of the formation where the downhole instrument is located on the ground. The contribution value of the formation and mud resistivity around the instrument can be flexibly changed, enabling functional verification testing of the MWD lateral imaging resistivity instrument in a workshop or at the drilling site, as well as calibration of the relationship between the instrument measurement signal and the formation resistivity. This allows for rapid calibration of the MWD lateral imaging resistivity instrument. The device is compact and portable, which improves flexibility.

[0004] However, the above resistivity calibration device has some shortcomings in actual use.

[0005] The above-mentioned device controls the simulation unit for adjustment and switching through the linkage device and the gear switching device, thereby realizing the calibration effect of the downhole resistivity instrument in multiple gears. During use, since its multi-gear switching method requires driving the resistance network in the simulation 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 and require professional technicians to operate and maintain. In addition, switching of multiple gears means that more electrical components need to be arranged, 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 results.

[0006] 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

[0007] 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 in. The drill bit is also connected to a drill collar, and the drill collar is provided with a test unit for calibrating the resistivity measuring device.

[0008] The testing unit comprises:

[0009] There are at least two mounting plates provided and spaced apart along the axial direction of the drill collar;

[0010] 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 performing calibration tests on the resistivity measuring device;

[0011] The formation environment simulation component is set 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.

[0012] Preferably, the formation environment simulation component includes a resistance simulation end connected to one of the mounting plates, the resistance simulation end is electrically connected to the resistivity measuring device through a port, and the resistance simulation end is also electrically connected to the current end and the test end to form the electrical circuit required for testing the resistivity measuring device.

[0013] 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, and one end of the adjustment slider and the resistance module are electrically connected to the test end, forming a series-configured electrical circuit between the test end, the adjustment slider and a section of the resistance module.

[0014] Preferably, extension blocks connected to the mounting plate are symmetrically extended at both ends of the resistance module, and the end of the adjustment slider away from the resistance module is connected to the driven slider. An adjustment screw is commonly provided between the two extension blocks and the driven slider, and the adjustment screw and the driven slider are threadedly connected.

[0015] Preferably, the driven slider and the extension block are both made of insulating materials.

[0016] 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.

[0017] Preferably, the outside of the battery module is also electrically connected to a power storage module, and the power storage module is controlled by the controller to replenish electric energy for the battery module.

[0018] Preferably, the electricity storage module is positionally connected to one of the mounting plates and is arranged in a ring structure.

[0019] Preferably, a connecting support column is commonly connected between the battery module and the test end to limit the installation of the test end.

[0020] Preferably, the two mounting plates are provided with a plurality of connecting pipes so that the drilling fluid can be introduced to the drill bit during the drilling process.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 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. By regularly starting the test unit to perform calibration testing on the resistivity measuring device, it is possible to quickly and regularly obtain test data under different resistance conditions by multiple measurements and adjustments to the slider position changes, thereby improving the accuracy of the calibration test data.

[0023] 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 drilling calibration test, realize self-powering 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

[0024] The present invention will be further described below with reference to the accompanying drawings and examples.

[0025] Figure 1 It is a structural schematic diagram of the present invention.

[0026] Figure 2 It is a structural schematic diagram of the test unit of the present invention.

[0027] Figure 3 It is a structural schematic diagram of the formation environment simulation component of the present invention.

[0028] Figure 4 It is a structural schematic diagram of the current end of the present invention.

[0029] Figure 5 It is a structural diagram of the resistance simulation terminal of the present invention.

[0030] Figure 6 It is a structural diagram of the power supply end of the present invention.

[0031] Figure 7 It is a schematic structural diagram of the heat conducting rod of the present invention.

[0032] Figure 8 It is a structural schematic diagram of the heat-conducting groove of the present invention.

[0033] 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 terminal; 2201. resistance module; 2202. adjustment slider; 2203. extension block; 2204. driven slider; 2205. adjustment screw; 221. current terminal; 2210. battery module; 2211. power storage module; 222. test terminal; 23. connecting support column; 24. connecting pipe; 25. power supply terminal; 250. temperature-variable power generation module; 251. thermal conductive rod; 252. thermal conductive ring; 253. cooler; 254. thermal conductive groove. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1 To the attached Figure 8 The embodiments of the present invention are described in detail.

[0035] 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 technically achieves the effect of calibrating and testing the resistivity equipment; 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 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.

[0036] Example 1: Reference Figure 1 and Figure 2 The figure shows a device for testing azimuthal resistivity while drilling, comprising a drill bit 1 with a built-in resistivity measuring device. The drill bit 1 is also connected to a drill collar 10, which houses a test unit 2 for calibrating the resistivity measuring device. During use, the test unit 2 is periodically activated to perform calibration tests on the resistivity measuring device within the drill bit 1, thereby achieving rapid and regular calibration of the resistivity measuring device.

[0037] It should be noted that the drill bit 1 is equipped with a conventional downhole resistivity measurement device with an azimuth measurement function, which 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.

[0038] Reference Figures 2 to 4 As shown, the test unit 2 is used to calibrate the resistivity measuring device; specifically, the test unit 2 includes:

[0039] 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 equipment.

[0040] The port 21 is provided on one of the mounting plates 20 close to the drill bit 1 and is used to electrically connect to the resistivity measuring device on the drill bit 1 so as to achieve the effect of regularly performing calibration tests on the resistivity measuring device.

[0041] 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.

[0042] 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.

[0043] During use, after correspondingly connecting the resistivity measuring device to the port 21, the current terminal 221 and the test terminal 222, 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.

[0044] 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, and 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-configured electrical circuit is formed between the test terminal 222, the adjustment slider 2202, a section of the resistance module 2201 and the resistivity measuring device.

[0045] During use, after the resistivity measuring device is electrically connected to the port 21 and the like 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 terminal 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 and calibration, the accuracy of the results after the calibration test of the resistivity measuring device is effectively guaranteed.

[0046] Reference Figures 4 to 6As shown, extension blocks 2203 connected to the mounting plate 20 are symmetrically extended from both ends of the resistance module 2201, and the end of the adjustment slider 2202 away from the resistance module 2201 is connected to the driven slider 2204, and an adjustment screw 2205 is commonly 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.

[0047] During use, by rotating the adjusting screw 2205, the driven slider 2204 will move axially along its thread, and synchronously drive the adjusting slider 2202 to slide on the resistance module 2201, thereby achieving precise adjustment of the positions of the driven slider 2204 and the adjusting slider 2202, and thus achieving the purpose of adjusting the resistance value between the resistance module 2201, the test end 222 and the adjusting slider 2202.

[0048] 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.

[0049] Reference Figures 4 to 6 As shown, the current end 221 includes a battery module 2210 connected to the upper limit of the 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. Specifically, the positive pole of the battery module 2210 is connected to one end of the resistance module 2201, and the negative pole 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.

[0050] 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 use of 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.

[0051] Reference Figures 4 to 6As shown, the battery module 2210 is also electrically connected to a power storage module 2211 on the outside. The power storage module 2211 is controlled by the controller to replenish power for the battery module 2210. During use, when the voltage of the battery module 2210 drops below a preset threshold, the controller automatically activates the power storage module 2211 to charge the battery module 2210. The controller also flexibly adjusts the output current of the power storage module 2211 based on the real-time status of the battery module 2210, thereby precisely controlling the charging speed and effectively preventing battery overheating or damage caused by overcharging. When the voltage of the battery module 2210 reaches a full charge, the controller stops the charging process.

[0052] During the test, the controller controls battery module 2210 to supply power to the resistivity measurement equipment. When the voltage of battery module 2210 falls below a certain threshold, the controller activates power storage module 2211 for additional power. Simultaneously, the controller monitors the discharge current to ensure it remains within a safe range. If the current exceeds a safety threshold, the controller activates safety protection mechanisms, such as limiting current output or stopping power supply.

[0053] 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.

[0054] Reference Figures 4 to 6 As shown, a connecting support 23 is commonly connected between the battery module 2210 and the test end 222 to limit the installation of the test end 222. The connecting support 23 is also preferably made of insulating material.

[0055] Reference Figures 4 to 6 As shown, the two mounting plates 20 are jointly provided with a plurality of connecting pipes 24 so as to allow the drill bit 1 to introduce drilling fluid to the drill bit 1 during the drilling process.

[0056] Example 2: Reference Figures 6 to 8As shown, based on 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 modules 250 are connected to the heat-conducting rods 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 to which they are connected. The medium temperature variable power generation module 250 is made of thermoelectric material, and the heat conducting rod 251 and the heat conducting 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 conducting rod 251 is connected to a cooler 253 which is 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 conducting groove 254 is formed on the drill collar 10 corresponding to the heat conducting ring 252 so that the heat conducting ring 252 can contact the formation environment to achieve heat conduction.

[0057] 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 use external equipment to pump drilling fluid into the drill string (mainly composed of the drill bit 1 at the front end, the drill collar 10 and several drill rods). The lower temperature drilling fluid contacts the high-temperature drill bit 1 and takes away part of the heat from the drill bit 1 and enters the formation. The drilling fluid absorbs heat, lowering the temperature of the drill bit 1 and preventing the drill bit 1 from overheating and damage. The flow of the drilling fluid also acts as a lubricant, reducing the friction between the drill bit 1 and the formation, further reducing heat generation.

[0058] 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 along the heat-conducting ring 252 and several heat-conducting rods 251 to the temperature-variable power generation module 250 and the cooler 253. 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 is subjected to high heat on one side, while the other side contacts the drilling fluid with a lower temperature in the drill collar 10, 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, it completes the effect of powering the power storage module 2211 and the current terminal 221. During use, by recycling the heat energy that was originally wasted, partial self-powering is achieved during the drilling process, reducing dependence on external power supplies, reducing energy consumption and carbon emissions, and improving energy utilization efficiency.

[0059] 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.

[0060] Further, refer to Figures 6 to 8 As shown, the cooler 253 is arranged as 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 passed through the connected mounting plate 20. A number 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.

[0061] During operation: Step 1: Connect the azimuthal 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 the electrical circuit required for the test.

[0062] 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.

[0063] 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 of the resistance simulation end 220 and the resistivity measurement device, completing the calibration test of the resistivity measurement device. By repeatedly measuring and adjusting the position changes of the slider 2202, test data under different resistance conditions is obtained, thereby improving the accuracy of the calibration test data.

[0064] It will be apparent 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 characteristics of the present invention. Therefore, the embodiments should be considered in all respects as exemplary and non-restrictive.

[0065] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method 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 can also be appropriately combined to form other implementation methods 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 azimuth 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 test 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 provided on one of the mounting plates (20) near 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 performing calibration tests on the resistivity measuring device; A formation environment simulation component (22) is provided 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; The formation environment simulation component (22) includes a resistance simulation terminal (220) connected to one of the mounting plates (20), the resistance simulation terminal (220) being electrically connected to the resistivity measurement device via the port (21), and the resistance simulation terminal (220) being further electrically connected to the current terminal (221) and the test terminal (222) to form an electrical circuit required for testing the resistivity measurement device; 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 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); 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.

2. The device for testing azimuthal resistivity while drilling according to claim 1, wherein: The driven slider (2204) and the extension block (2203) are both made of insulating materials.

3. The device for testing azimuthal resistivity while drilling according to claim 1, wherein: 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), and 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) respectively. The battery module (2210) is connected to a controller for configuring the required test current.

4. The device for testing azimuthal resistivity while drilling according to claim 3, characterized in that: The battery module (2210) is also electrically connected to an electricity storage module (2211) on the outside. The electricity storage module (2211) is controlled by a controller to supplement electric energy for the battery module (2210).

5. The device for testing azimuthal resistivity while drilling according to claim 4, 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.

6. The device for testing azimuthal resistivity while drilling according to claim 3, 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).

7. 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 drill bit (1) can introduce drilling fluid to the drill bit (1) during the drilling process.

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