A formation resistivity measuring device and method for a rotary steerable system

Abstract

The application discloses a formation resistivity measuring device and method for a rotary steering system, and comprises a drill collar body, which is provided with conductive parts at both ends, wherein the drill collar body is connected with the rotary steering system through the conductive parts; a control device connected with the conductive parts, which is configured to identify a current device working mode, and perform control on a formation resistivity measuring task matched with the device working mode, so as to obtain resistivity measuring data, wherein the device working mode is a low-power consumption working mode or a continuous measuring working mode; and a resistivity measuring device arranged on the outer wall of the drill collar body, which is configured to perform the formation resistivity measuring task under the control of the control device, and calculate the resistivity measuring data. The coil packaging mode is simple, the production process is less, the material cost is reduced, and the production cycle is shortened.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil and gas drilling, in particular to a formation resistivity measuring device and method for a rotary steerable system. BACKGROUND

[0002] With the progress of oil and gas exploration and development technology, complex technology wells such as horizontal wells and highly deviated wells have been more and more widely developed. In the construction process of complex technology wells, the rotary steerable system has been more and more widely used in geosteering drilling operations. In order to make the rotary steerable system more efficient, it is necessary to understand the formation information when directional drilling, and to equip the rotary steerable system with "eyes", that is, to add a formation resistivity while drilling device and a gamma measurement device in the rotary steerable system. Today, these formation information measuring devices while drilling are developing towards high measurement accuracy, high resolution and high reliability.

[0003] In the process of implementing the present application, the inventors have found that the resistivity measuring device matched with the existing rotary steerable system, although its reliability is relatively high, its processing technology is complex, especially the packaging and protection structure of the resistivity measuring antenna, which needs to go through multiple processes such as slotting, welding, polishing, threading and glue sealing in the manufacturing process, with high quality control cost and long working hours. This results in high material cost and time cost for producing a formation resistivity measuring device. Therefore, under the premise of ensuring the reliability of the device, reducing the material cost and shortening the production cycle of the device is an important guarantee for improving market competitiveness.

[0004] In addition, in the process of implementing the present application, the inventors have also found that when drilling with the rotary steerable system, the resistivity measuring device should have different working modes to meet different needs. For example, when the rotary steerable system has a power consumption limit, the resistivity measuring device should work in a low-power mode, that is, measure according to the requirements of the rotary steerable system; and when the geologist needs a large amount of formation data, the resistivity of the formation should be measured automatically and the data should be stored. However, most of the formation resistivity measuring devices connected to the existing rotary steerable system can only work in one mode and cannot be switched.

[0005] In summary, the prior art needs to provide a new formation resistivity measuring scheme for a rotary steerable system to solve one or more of the above technical problems. SUMMARY

[0006] In order to solve the above technical problems, the present application provides a formation resistivity measuring device for a rotary steering system, comprising: a drill collar body, two ends of the drill collar body are respectively provided with conductive members, wherein the drill collar body is connected with the rotary steering system through the conductive members; a control device connected with the conductive members, configured to identify a current device working mode, and perform control on a formation resistivity measuring task matched with the device working mode, so as to obtain resistivity measuring data, wherein the device working mode is a low-power consumption working mode or a continuous measuring working mode; a resistivity measuring device arranged on an outer wall of the drill collar body, configured to perform a formation resistivity measuring task under the control of the control device, and calculate the resistivity measuring data.

[0007] Preferably, the control device is further configured to obtain power energy and instructions provided from the rotary steering system, wherein after the power energy is reobtained, a current device working mode written before entering the well or set by a surface device is read, wherein the power energy is provided to the control device by the rotary steering system when mud circulation or the system is re-powered.

[0008] Preferably, the formation resistivity measuring device further comprises: bus holes respectively communicated with the conductive members at two ends of the drill collar body, the bus holes are arranged in the side wall of the drill collar body, wherein the bus holes comprise a first bus hole and a second bus hole, the first bus hole is configured to provide a line connection channel for the connection of the first conductive member with the control device, and the second bus hole is configured to provide a line connection channel for the connection of the second conductive member with the control device.

[0009] Preferably, the control device comprises: a power module configured to obtain the power energy through the conductive members, and convert the power energy into different levels of voltage to provide corresponding power supply for each module in the control device; a master control module configured to obtain system instructions sent by the rotary steering system through the conductive members, read the content of the system instructions, and send the data obtained by the current measurement to the rotary steering system through the conductive members after obtaining the resistivity measuring data; a transmission control module connected with the master control module through a wiring hole, configured to control the resistivity measuring device to perform a formation resistivity measuring task under the control of a measurement instruction when the master control module reads the measurement instruction; a receiving control module connected with the master control module through a wiring hole, configured to receive an electromagnetic wave receiving signal fed back by the resistivity measuring device in real time, calculate the resistivity measuring data, and send the data measured in real time to the master control module.

[0010] Preferably, the resistivity measuring device comprises a plurality of first type coil units for transmitting electromagnetic wave signals and a plurality of second type coil units for receiving electromagnetic wave signals, wherein the first type coil units are arranged inside the sidewall of the drill collar body and connected to the main control module in the control device through transmission holes, wherein the transmission holes provide corresponding line connection channels for the connection between the main control module and each first type coil unit; the second type coil units are arranged inside the sidewall of the drill collar body and connected to the main control module in the control device through receiving holes, wherein the receiving holes provide corresponding line connection channels for the connection between the main control module and each second type coil unit.

[0011] Preferably, the coil unit comprises: a component groove for accommodating the current coil unit, the component groove is configured as an annular groove circumferentially surrounding the outer wall of the drill collar body; a sealing groove arranged at the middle position of the component groove, configured as an annular groove circumferentially surrounding the groove bottom sidewall of the component groove; a coil groove for accommodating the coil piece, the coil groove is configured at the middle position in the width direction of the sealing groove and configured as an annular groove circumferentially surrounding the groove bottom sidewall of the sealing groove; a plurality of magnetic core grooves configured to be uniformly distributed in the circumferential direction at a preset angle, wherein each magnetic core groove is configured to cover the drill collar sidewall groove structure formed by the component groove, the sealing groove and the coil groove; a plurality of magnetic cores, each magnetic core is placed in the magnetic core groove; the coil piece is configured to be wound in the coil groove by copper wire; a rubber ring is configured to be formed by sealing glue in the sealing groove.

[0012] Preferably, the radial section of the component groove is configured as a convex structure, wherein the coil unit further comprises: a first non-metallic ring and a second non-metallic ring arranged at both ends of the groove in the component groove respectively, each non-metallic ring is circumferentially surrounded by the groove end of the component groove with a convex structure as the radial section, and covers the end of the drill collar body and the magnetic core groove at the same time; a metal ring located between the first non-metallic ring and the second non-metallic ring, the metal ring is configured to cover the end position of the rubber ring and each non-metallic ring at the same time, and the radial section structure of the metal ring matches the radial section structure of each non-metallic ring.

[0013] Preferably, the metal ring further comprises: a plurality of inlaid blocks, the plurality of inlaid blocks are uniformly distributed in the circumferential direction at the middle position of the radial section of the metal ring.

[0014] Preferably, the coil unit further comprises a pin hole arranged at the coil slot in each coil unit, the pin hole is in communication with the receiving hole or the transmitting hole, and a sealing pin is arranged in the pin hole and connected with both ends of the coil.

[0015] Preferably, in the low-power-consumption mode, the control device is further configured to control the measuring device to be in a standby state, and after receiving the system instruction sent by the rotary steering system, diagnose whether the system instruction is related to the measuring device, and then identify the specific content of the system instruction, wherein the identification of the specific content of the system instruction comprises: sequentially identifying whether it is a measurement instruction, a reading instruction, a mode conversion instruction, and a rotary steering time writing instruction.

[0016] Preferably, when the current system instruction is a reading instruction, the control device is further configured to read the latest resistivity measurement data in the local storage, send the measurement data to the rotary steering system, and write the device time recorded by the current measuring device and a sending data identifier into the local storage.

[0017] Preferably, when the current system instruction is a mode conversion instruction, the control device is further configured to write a continuous measurement mode into the local storage, and write the device time recorded by the current measuring device and a mode conversion identifier into the local storage.

[0018] Preferably, when the current system instruction is not a rotary steering time writing instruction, the control device is further configured to read the device time recorded by the current measuring device, and write the current device time and a received unknown instruction identifier into the local storage.

[0019] Preferably, in the continuous measurement mode, the control device is further configured to control the resistivity measuring device to perform a formation resistivity measurement task according to a preset measurement time interval, wherein when a system instruction sent by the rotary steering system is received, the state of the current measuring device is reserved, and an interruption program is entered, so that after the interruption program ends, the continuous measurement task is continued from the reserved device state, and in the interruption program, whether it is a measurement instruction, a reading instruction, a mode conversion instruction, and a rotary steering time writing instruction is sequentially identified.

[0020] Preferably, in the interruption program, the control device is further configured to, when the current system instruction is a measurement instruction, read the device time recorded by the current measuring device, write the current device time and a measurement instruction identifier into the local storage, and end the interruption program.

[0021] Preferably, the control device is further configured to, when the current system instruction is a mode conversion instruction, write the low-power mode into the local storage first, and then write the device time recorded by the current measuring device and the mode conversion identifier into the local storage, thereby ending the interruption procedure.

[0022] Preferably, the control device is further configured to, when the current system instruction is not a rotary steering time writing instruction, read the device time recorded by the current measuring device, and write the current device time and the received unknown instruction identifier into the local storage, thereby ending the interruption procedure.

[0023] Preferably, the coil unit is further connected with the control device through a tuning module, wherein the tuning module is installed inside the sidewall of the drill collar body, a tuning cover plate is arranged on the outer side of the tuning module, and the outer side edge of the tuning cover plate is flush with the sidewall edge of the drill collar body.

[0024] In another aspect, the present application also provides a formation resistivity measuring method for a rotary steering system, which is implemented by using the formation resistivity measuring device as described above, and comprises: identifying, by the control device, a current device working mode, and performing control on a formation resistivity measuring task matched with the device working mode; performing, by the resistivity measuring device, the formation resistivity measuring task under the control of the control device, and calculating resistivity measuring data; and acquiring, by the control device, the resistivity measuring data, and sending the resistivity measuring data to the rotary steering system through the conductive members arranged at both ends of the drill collar body.

[0025] Compared with the prior art, one or more embodiments of the above scheme can have the following advantages or beneficial effects:

[0026] The present application discloses a formation resistivity measuring device and method for a rotary steering system. The device and method comprise a coil member, a magnetic core, a measuring drill collar, a metal protection ring, a non-metal protection ring, a control device, a circuit cover plate, a conductive ring, etc. The coil packaging method provided by the present application is simple, has fewer production procedures, reduces material costs and shortens the production cycle. At the same time, the measuring device and method have two working modes of low power consumption and continuous measurement, and can control the switching of two drilling modes, and can meet more needs. The device has a simple structure, is safe and reliable, can measure the formation resistivity when drilling complex technology wells such as horizontal wells and high-inclination wells, and provides data for geosteering.

[0027] Additional advantages, objects, and features of the application will be apparent from the following description, taken in conjunction with the accompanying drawings, and upon practice of the application in its various embodiments. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application, as claimed. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application. In the drawings:

[0029] Figure 1 It is a whole structure schematic view of the stratum resistivity measuring device for rotary steering system of the embodiment of the present application.

[0030] Figure 2 It is an A direction sectional view of the application environment schematic view of the stratum resistivity measuring device for rotary steering system of the embodiment of the present application.

[0031] Figure 3 It is a B direction sectional view of the application environment schematic view of the stratum resistivity measuring device for rotary steering system of the embodiment of the present application.

[0032] Figure 4 It is a circuit wiring schematic view of the control device in the stratum resistivity measuring device for rotary steering system of the embodiment of the present application.

[0033] Figure 5 It is an internal structure schematic view of the control device in the stratum resistivity measuring device for rotary steering system of the embodiment of the present application.

[0034] Figure 6 It is an enlarged view of the coil unit in the stratum resistivity measuring device for rotary steering system of the embodiment of the present application.

[0035] Figure 7 It is a structure schematic view of the internal recesses of the coil unit in the stratum resistivity measuring device for rotary steering system of the embodiment of the present application.

[0036] Figure 8 It is a structure schematic view of the metal ring in the stratum resistivity measuring device for rotary steering system of the embodiment of the present application.

[0037] Figure 9 It is a working step schematic view of the stratum resistivity measuring device for rotary steering system of the embodiment of the present application.

[0038] Figure 10A working flow diagram in a low-power mode of a formation resistivity measuring device for a rotary steering system according to an embodiment of the present application.

[0039] Figure 11 A working flow diagram in a continuous working mode of a formation resistivity measuring device for a rotary steering system according to an embodiment of the present application.

[0040] Figure 12 A step diagram of a formation resistivity measuring method for a rotary steering system according to an embodiment of the present application.

[0041] In the present application, all the drawings are schematic drawings, only for illustrating the principles of the present application, and are not drawn in actual proportion.

[0042] Among them, the list of reference signs is as follows:

[0043] 110: collar body

[0044] 111: coil groove

[0045] 112: magnetic core groove

[0046] 113: pin hole

[0047] 114: glue sealing groove

[0048] 115: component groove

[0049] 120: conductive part

[0050] 130: wiring hole

[0051] 131: receiving hole

[0052] 132: transmitting hole

[0053] 133: bus hole

[0054] 210: coil part

[0055] 211: first coil unit of second type coil unit

[0056] 212: second coil unit of second type coil unit

[0057] 213: third coil unit of first type coil unit

[0058] 214: fourth coil unit of first type coil unit

[0059] 215: fifth coil unit of first type coil unit

[0060] 216: sixth coil unit of first type coil unit

[0061] 220: magnetic core

[0062] 230: metal ring

[0063] 2301: inlay block

[0064] 231: non-metal ring

[0065] 232: rubber ring

[0066] 240: sealing pin

[0067] 310: control device

[0068] 311: control board

[0069] 312: transmitting board

[0070] 313: receiving board

[0071] 314: power supply board

[0072] 315: bus board

[0073] 316: tuning board

[0074] 320: circuit cover plate

[0075] 321: tuning cover plate DETAILED DESCRIPTION

[0076] The embodiments of the present application will be described in detail with reference to the drawings and examples, so that the application can be understood as how to solve the technical problems and achieve the technical effects by applying technical means. It should be noted that the various embodiments in the present application and the various features in each embodiment can be combined with each other without conflict, and the technical solutions formed thereby are within the protection scope of the present application.

[0077] With the progress of oil and gas exploration and development technology, complex process wells such as horizontal wells and highly deviated wells have been increasingly widely developed. In the construction process of complex process wells, the rotary steering system has been increasingly widely applied in geosteering drilling operations. In order to make the rotary steering system more efficient, it is necessary to understand the formation information when directional drilling, and to equip the rotary steering system with "eyes", that is, to add a formation resistivity device while drilling and a gamma measurement device in the rotary steering system. Today, these formation information measurement while drilling devices are developing towards high measurement accuracy, high resolution and high reliability.

[0078] In the process of implementing the present application, the inventors found that the resistivity measuring device matched with the existing rotary steering system has high reliability, but its processing technology is complex, especially the packaging and protection structure of the resistivity measuring antenna, which needs multiple processes such as slotting, welding, polishing, threading and glue sealing in the manufacturing process, with high quality control cost and long working hours. This results in high material cost and time cost for producing a formation resistivity measuring device. Therefore, under the premise of ensuring the reliability of the device, reducing the material cost and shortening the production cycle of the device is an important guarantee for improving market competitiveness.

[0079] In addition, in the process of implementing the present application, the inventors also found that the resistivity measuring device should have different working modes to meet different needs when the rotary steering system is drilling. For example, when the rotary steering system has a power consumption limit, the resistivity measuring device should work in a low-power mode, that is, measure according to the requirements of the rotary steering system; when the geologist needs a large amount of formation data, the resistivity measuring device should automatically measure the formation resistivity and store the data. However, most of the formation resistivity measuring devices connected to the existing rotary steering system can only work in one mode and cannot be switched.

[0080] Therefore, in order to solve one or more of the above technical problems, the present application discloses a formation resistivity measuring device and method for a rotary steering system. The device and method optimize the coil system packaging method, reduce the production process, reduce the material cost and shorten the production cycle. At the same time, the scheme has two working modes of low power consumption and continuous measurement, can control the switching of the two working modes, and can meet the needs of more drilling conditions.

[0081] Figure 1 The figure is a schematic diagram of the overall structure of the formation resistivity measuring device for a rotary steering system according to an embodiment of the present application. As shown in the figure, the device comprises a coil system, a signal processing system and a power supply system. Figure 1As shown, the formation resistivity measuring device (hereinafter referred to as "formation resistivity measuring device" or "measuring device") for the rotary steerable system according to the present application comprises a drill collar body A (or 110), a control device B (or 310) and a resistivity measuring device C. Wherein, the drill collar body A is provided with a conductive part 120 at both ends. Wherein, the drill collar body A is connected with other drill collars (such as x, y) in the rotary steerable system (the rotary steerable system where the formation resistivity measuring device is installed) through the conductive part 120. The control device B is connected with the conductive part 120. The control device B is configured to identify the current working mode of the formation resistivity measuring device, and perform control on the formation resistivity measuring task matched with the current device working mode, so as to obtain the resistivity measuring data. The resistivity measuring device C is arranged on the outer wall of the drill collar body A. The resistivity measuring device C is configured to perform the formation resistivity measuring task and calculate the resistivity measuring data under the control of the control device B. In the embodiment of the present application, the device working mode is a low-power working mode or a continuous measuring working mode.

[0082] Further, in the embodiment of the present application, the control device B is also configured to obtain the power energy provided from the rotary steerable system and the (system) instruction. Wherein, the control device B will read the current device working mode written before entering the well or set by the ground device (drilling platform) after regaining the power energy. At this time, the control device B will provide the power energy to the control device B from the rotary steerable system when the mud circulation or the system is powered on again.

[0083] Specifically, in one aspect, the control device B obtains power energy from the rotary steering system, and also receives system instructions for operating control of the measuring device from the rotary steering system. Further, in actual application, the formation resistivity measurement task of the resistivity measuring device C starts from the power-on of the measuring device. After the measuring device is powered on, self-checking is first performed, the local time of the device is read, and the stored working mode is determined to use the low-power working mode or the continuous measurement working mode. The low-power working mode or the continuous measurement working mode is written into the local memory in the measuring device before the device is put into the well, or the measuring device can be set by the downlink device of the rotary steering system during real-time drilling, and the set working mode to be converted is stored in the local memory in the measuring device. However, each working mode only takes effect after the measuring device is re-powered (for example, the measuring device is re-powered due to mud circulation, or the measuring device is re-powered due to the re-powering of the rotary steering system). For example, when the rotary steering system is drilling, the ground staff changes the working mode in the measuring device by using the downlink device, but at this time, the measuring device still measures according to the current working mode, so that the measuring device re-reads the working mode and then measures according to the new working mode after waiting for mud circulation or the rotary steering system to be powered off, and the measuring device is powered on again.

[0084] The specific structure and application installation environment of the control device B and the resistivity measuring device C will be described in detail below.

[0085] Further, the control device B at least includes: a bus module (not numbered), a power module (not numbered), a main control module (not numbered), a transmission control module (not numbered), and a receiving control module (not numbered). The bus module is integrated in the bus board 315, the power module is integrated in the power board 314, the main control module is integrated in the control board 311, the transmission control module is integrated in the transmission board 312, and the receiving control module is integrated in the receiving board 313.

[0086] Figure 2 A vertical sectional view of the application environment schematic diagram of the formation resistivity measuring device for the rotary steering system. Figure 3 A vertical sectional view of the application environment schematic diagram of the formation resistivity measuring device for the rotary steering system. It should be noted that the plane of the A direction and the plane of the B direction are perpendicular to each other in the embodiment of the application.

[0087] As Figure 2 and Figure 3As shown, the formation resistivity measuring device further comprises a bus hole 133. The bus hole 133 is in communication with the conductive member 120 at both ends of the drill collar body 110 respectively. And the bus hole 133 is arranged inside the sidewall of the drill collar body. The bus hole 133 comprises a first bus hole and a second bus hole respectively at both ends of the drill collar body 110. The first bus hole is configured to provide a line connection channel for the (electrical) connection between the first conductive member 120 and the control device B, and the second bus hole is configured to provide a line connection channel for the (electrical) connection between the second conductive member 120 and the control device B.

[0088] As shown in Figure 2 and Figure 3 The drill collar body A is a measuring drill collar 110, and each end of the measuring drill collar has a conductive member 120. The conductive member 120 is implemented by a conductive ring. The conductive member 120 is connected with other drill collars of the rotary steering system, and the power of the rotary steering system is transmitted to the power board 314 through the conductive ring 120 and the bus hole 133. In addition, on the one hand, the data and system instructions of the rotary steering system are transmitted to the bus board 315 through the conductive ring 120 and the bus hole 133, and on the other hand, the resistivity measurement data measured by the resistivity measuring device C is transmitted and fed back to the rotary steering system through the conductive ring 120 and the bus hole 133.

[0089] Further, in the embodiment of the present application, the power module in the power board 314 is configured to obtain power energy through the conductive member 120, and convert the obtained power energy into different levels of voltage to provide corresponding power for each module in the control device B. The main control module in the control board 311 is configured to obtain the system instructions sent by the rotary steering system through the conductive member 120, read the content of the system instructions, and after obtaining the resistivity measurement data from the resistivity measuring device C, transmit the currently measured data to the rotary steering system through the conductive member 120. The transmission control module in the transmission board 312 is connected with the main control module in the control board 311 through the wiring hole 131. The transmission control module is configured to control the resistivity measuring device C to perform the current required formation resistivity measurement task under the control of the measurement instruction when the main control module reads the measurement instruction. The reception control module in the reception board 313 is connected with the main control module in the control board 311 through the wiring hole 131. The reception control module is configured to receive the electromagnetic wave receiving signal fed back by the resistivity measuring device C in real time, calculate the resistivity measurement data, and transmit (feed back) the real-time measured data to the main control module in the control board 311. In this embodiment, one end of the wiring hole 131 is connected with the main control module in the control board 311, and the other end is fixedly connected with the bottom of the drill collar body 110. And the wiring hole 131 is arranged inside the sidewall of the drill collar body 110.

[0090] Figure 4 The circuit wiring diagram of the control device in the formation resistivity measuring device for the rotary steering system in the embodiment of the application. Figure 5 The internal structure diagram of the control device in the formation resistivity measuring device for the rotary steering system in the embodiment of the application. As shown in Figure 4 and Figure 5 The power board 314 converts the voltage on the bus into the voltage required by each circuit board after taking power from the bus in the bus hole 133, and connects with each circuit board through the wiring hole 130 to supply power to each circuit board. The main control module in the control board 311 is connected with the transmission control module in the transmission board 312, the receiving control module in the receiving board 313 and the bus module in the bus board 315 through the wiring hole 130. The rotary steering system transmits data and instructions to the bus module in the bus board 315 through the bus in the bus hole 133, and then converts the bus protocol into 485 protocol through the bus module in the bus board 315 to transmit to the main control module in the control board 311. The main control module in the control board 311 processes the instructions and data connected to it, sends control signals to the transmission control module in the transmission board 312, and the transmission control module in the transmission board 312 controls each first type coil unit (the third coil unit 213, the fourth coil unit 214, the fifth coil unit 215 and the sixth coil unit 216 described below) in the resistivity measuring device C to send electromagnetic wave signals in turn. Each second type coil unit (the first coil unit 211 and the second coil unit 212 described below) in the resistivity measuring device C processes the received signals through the receiving control module in the receiving board 313 after receiving the signals, converts the resistivity measurement data, and transmits it to the main control module in the control board 311. The main control module in the control board 311 transmits the calculated resistivity measurement data to the bus module in the bus board 315, and then transmits it to the rotary steering system through the bus board 315.

[0091] Reference Figure 4 In the embodiment of the application, the transmission board (not shown) formed by the transmission board 312, the receiving board 313, the control board 311 and the power board 314 is uniformly distributed along the inner wall of the drill collar body 110 in turn. Further, the transmission board (not shown) is distributed along the inner wall of the drill collar body 110 in turn at intervals of 90°, wherein the transmission board 312 is arranged opposite to the control board 311, and the receiving board 313 is arranged opposite to the transmission board. The wiring hole 130 is arranged in the inner wall of the drill collar body 110, and the wiring hole 130 is used to connect the transmission board 312, the receiving board 313, the control board 311 and the transmission board (not shown) in turn to provide internal wiring connection channels between each module in the control device.

[0092] Further, referring to Figures 2-4 , the control board 311, the transmitting board 312, the receiving board 313, the power supply board 314 and the bus board 315 are installed in the recess on the measuring drill collar 110. The circuit cover plate 320 is installed in the recess on the measuring drill collar 110 and is installed outside the control board 311, the transmitting board 312, the receiving board 313, the power supply board 314 and the bus board 315, and the outer edge of the circuit cover plate 320 is flush with the side wall edge of the drill collar body 110. In this way, the present application uses the circuit cover plate 320 to protect the control board 311, the transmitting board 312, the receiving board 313, the power supply board 314 and the bus board 315.

[0093] As shown in Figure 2 and Figure 3 , in the embodiment of the present application, the resistivity measuring device C includes a plurality of first type coil units for transmitting electromagnetic wave signals and a plurality of second type coil units for receiving electromagnetic wave signals. Each first type coil unit is arranged inside the side wall of the drill collar body 110 and connected together along the axial direction of the drill collar through the transmitting hole 132 arranged inside the side wall of the drill collar. Each first type coil unit is connected to the main control module in the control device B through the transmitting hole 132. The transmitting hole 132 provides a corresponding line connection channel for the connection between the main control module and each first type coil unit.

[0094] Further, each second type coil unit is arranged inside the side wall of the drill collar body 110 and connected together along the axial direction of the drill collar through the receiving hole 131 arranged inside the side wall of the drill collar. Each second type coil unit is connected to the main control module in the control device B through the receiving hole 131. The receiving hole 131 provides a corresponding line connection channel for the connection between the main control module and each second type coil unit.

[0095] In one embodiment, the present application is provided with two second type coil units, which are the first coil unit 211 and the second coil unit 212, and four first type coil units, which are the third coil unit 213, the fourth coil unit 214, the fifth coil unit 215 and the sixth coil unit 216. The first coil unit 211, the second coil unit 212, the third coil unit 213, the fourth coil unit 214, the fifth coil unit 215 and the sixth coil unit 216 all have the same packaging structure. Therefore, the internal structure and packaging structure of each coil unit (211-216) will be described in detail below by taking one coil unit (211-216) as an example.

[0096] Figure 7 is a structural diagram of the internal recesses of the coil units in the resistivity measuring device for the rotary steering system according to the embodiment of the present application. AsFigure 7 As shown, the coil unit (211-216) comprises a component slot 115, an encapsulation slot 114, a coil slot 111, a plurality of magnetic core slots 112, a plurality of magnetic cores 220, a coil component 210, and a rubber ring 232. The component slot 115 is configured to accommodate the current coil unit. The component slot 115 is configured as an annular groove circumferentially surrounding the outer wall of the drill collar body 110. The radial section of the component slot 115 is configured as a convex structure. The encapsulation slot 114 is arranged at the middle position of the slot bottom sidewall of the component slot 115 in the axial direction. The encapsulation slot 114 is configured as an annular groove circumferentially surrounding the slot bottom sidewall of the component slot 115. The width of the encapsulation slot 114 is less than the width of the groove bottom of the component slot 115.

[0097] The coil slot 111 is configured to accommodate the coil slot of the current coil component 210. The coil slot 111 is configured at the middle position of the width direction (axial direction) of the encapsulation slot 115 and formed as an annular groove circumferentially surrounding the slot bottom sidewall of the encapsulation slot 114. The width of the coil slot 111 is less than the width of the encapsulation slot 114.

[0098] With continued reference to Figure 7 The plurality of magnetic core slots 112 are configured to be uniformly distributed in the circumferential direction at a preset angle. Each magnetic core slot 112 is configured as a strip-shaped structure, and each magnetic core slot 112 covers the drill collar sidewall groove structure formed by the component slot 115, the encapsulation slot 114, and the coil slot 111. The length of each magnetic core slot 112 is greater than the width of the encapsulation slot 114 and less than the width of the groove bottom of the component slot 115. That is, each magnetic core slot 112 partially covers the groove bottom of the component slot 115 in the length direction and completely covers the groove bottom of the encapsulation slot 114 and the coil slot 111 in the length direction. Each magnetic core 220 is placed in the corresponding magnetic core slot 112. The coil component 210 is configured to be wound in the coil slot 111 by copper wire. The rubber ring 232 is configured to be formed by encapsulation in the encapsulation slot 114.

[0099] Figure 6 is a magnified view of the coil unit in the formation resistivity measuring device for the rotary steerable system according to the embodiments of the present application. As shown in the figure, Figure 6As shown, the coil units (211-216) also include a pin hole 113 and a sealing pin 240. The pin hole 113 is located at the coil slot 111 within each coil unit (211-216). The pin hole 113 communicates with either the receiving port 131 or the transmitting port 132. Specifically, when the current coil unit is a first-type coil unit, the pin hole 113 in the coil slot 111 of the current coil unit (211-216) communicates with the transmitting port 132. When the current coil unit is a second-type coil unit, the pin hole 113 in the coil slot 111 of the current coil unit (211-216) communicates with the receiving port 131. Furthermore, a sealing pin 240 is provided within the pin hole 113 in each coil unit (211-216). The sealing pin 240 is connected to both ends of the coil 210. The coil 210 is further connected to the main control module through the sealing pin 240, the pin hole 113, the receiving hole 131 or the transmitting hole 132, so that the main control module can control the electromagnetic wave emission of each first type of coil unit (i.e., achieve the purpose of controlling the formation resistivity measurement task of the resistivity measuring device under the control of the measurement command), or enable the main control module to obtain the detected electromagnetic wave reception signal from each second type of coil unit (i.e., achieve the purpose of feeding back the electromagnetic wave reception signal detected by the resistivity measuring device to the main control module).

[0100] Continue to refer to Figure 6 Each coil unit (211-216) further includes: a first non-metallic ring 231 and a second non-metallic ring 231 respectively disposed at both ends of the groove in the component groove 115, and a metal ring 230 located between the first non-metallic ring 231 and the second non-metallic ring 231. Each non-metallic ring (first non-metallic ring 231, second non-metallic ring 231) has a convex radial cross-section, surrounds the end of the groove in the component groove 115, and simultaneously covers the ends of the drill collar body 110 and the magnetic core groove 112. In addition, the metal ring 230 is configured to simultaneously cover the end positions of the rubber ring 232 and each non-metallic ring 231. Furthermore, the radial cross-sectional structure of the metal ring 230 matches the radial cross-sectional structure of each non-metallic ring 231. Further, the outer edges of each non-metallic ring 231 and the metal ring are flush with the sidewall edge of the drill collar body 110.

[0101] Figure 8 This is a schematic diagram of the metal ring structure in the formation resistivity measuring device for a rotary guide system according to an embodiment of this application. Figure 8 As shown, the metal ring 230 further includes a plurality of insert blocks 2301. The plurality of insert blocks 2301 are disposed at the middle position of the radial cross section of the metal ring 230, and are uniformly distributed in the circumferential direction at this position.

[0102] In a specific example, such as Figure 6 andFigure 7 As shown, 23 magnetic core grooves 112 are arranged on the outer wall of the measuring drill collar 110 in the circumferential direction, and the included angle between two adjacent magnetic core grooves 112 is 15°. First, the magnetic core 220 is placed in the magnetic core groove 112, and then the single-core copper wire is wound into the coil groove 111 on the measuring drill collar 110 to form the coil part 210, and the two ends of the coil part 210 are inserted into the pin hole 113 and connected with the sealing pin 240. After the coil part 210 is wound, a special mold is used to seal the glue in the glue sealing groove 114 on the measuring drill collar 110 to form the rubber ring 232. The rubber ring 232 completely fills all the magnetic core grooves 112 and pin holes 113, and completely wraps the coil part 210. The rubber ring 232 is sealed by using high-temperature-resistant rubber, such as fluororubber. An adhesive needs to be coated on the surface of the sealing metal before sealing to enhance the adhesion between the rubber and the metal. Then, the non-metallic protective ring 231 is sleeved on the measuring drill collar 110, as shown in Figure 6 As shown in the lower part of Figure 6 As shown in the lower part of

[0103] Then, the metal protective ring 230 is sleeved to protect the rubber ring 232, the coil 210 and the magnetic core 220. The non-metallic protective ring 231 is made of non-metallic material, and one of PEEK, glass steel, polyimide and other high-temperature-resistant and high-strength materials is recommended. The non-metallic protective ring 231 has a step at the edge, which is pressed below the measuring drill collar 110 and the metal protective ring 230 to ensure the structural reliability of the non-metallic protective ring 231.

[0104] As shown in Figure 6 and Figure 8 As shown in

[0105] Figure 5This is a schematic diagram of the internal structure of the control device in the formation resistivity measuring equipment for a rotary guide system according to an embodiment of this application. Figure 5 As shown, each coil unit (211-216) is also connected to the main control module of the control board 311 in the control device B via a tuning module. Specifically, the control device described in this embodiment of the invention further includes multiple tuning modules. The first end of the tuning module is connected to both ends of the coil element 210 in the first type of coil unit or the second type of coil unit, and the second end of the tuning module is connected to the transmission control module in the transmitting board 312 or the receiving control module in the receiving board 313 (wherein, when the first end of the tuning module is connected to both ends of the coil element 210 in the first type of coil unit, the second end of the tuning module is connected to the transmission control module in the transmitting board 312; when the first end of the tuning module is connected to both ends of the coil element 210 in the second type of coil unit, the second end of the tuning module is connected to the receiving control module in the receiving board 313). Additionally, refer to... Figure 2 and Figure 3 Each tuning board is located between the control device B and the resistivity measuring device C.

[0106] Furthermore, after the transmission control module receives the measurement command from the main control module, it transmits the command through the transmission port 132 to one or more tuning modules connected to the transmission control module. The current tuning module controls each first-type coil unit to transmit electromagnetic wave signals according to the parameters such as the transmission frequency indicated in the current measurement command through the transmission port 132. At this time, each second-type coil unit receives the electromagnetic wave reception signal fed back from the stratum, and the tuning module connected to the second-type coil unit obtains the electromagnetic wave reception signal through the receiving port 131, processes the signal, and then feeds back the tuned electromagnetic wave reception signal to the receiving control module through the receiving port 131. The receiving control module then calculates the corresponding resistivity measurement data based on the obtained electromagnetic wave reception signal, and feeds back the calculated resistivity measurement data to the main control module.

[0107] The tuning module is integrated on the tuning plate 316, which is installed inside the side wall of the drill collar body 110. A tuning cover plate 321 is provided on the outer side of the tuning plate 316 where the tuning module is located. The outer edge of the tuning cover plate 321 is flush with the edge of the side wall of the drill collar body 110.

[0108] refer to Figure 2 and Figure 3 In this embodiment of the invention, the control board 311, transmitter board 312, receiver board 313, power supply board 314, bus board 315, and tuning board 316 are all installed in the groove on the measuring drill collar 110. The tuning cover plate 321 is installed in the groove on the measuring drill collar 110 to protect the tuning board 316.

[0109] Since the rotary steering system is powered by the downhole generator when working, according to the characteristics of the drilling process, the mud is not circulated when connecting the drill pipe, therefore, the rotary steering system is not continuously powered when working downhole, but the downhole generator only powers the rotary steering system when the mud is circulated; and the downhole generator does not power the rotary steering system when the mud is not circulated. Therefore, based on the power supply characteristics of the rotary steering system, the formation resistivity measuring device is provided with a specific working process.

[0110] Figure 9 The figure is a working step diagram of the formation resistivity measuring device for the rotary steering system of the embodiment of the present application. As shown in Figure 9 The working process of the formation resistivity measuring device starts when the rotary steering system is powered on. The working of the measuring device is mainly completed by the control board 311. After the rotary steering system is powered on, the measuring device is powered to start working, first performing self-checking of the measuring device, reading the local time of the measuring device and the stored working mode, and determining whether the current working mode is the low-power working mode or the continuous measurement working mode.

[0111] Among them, the device working mode (low-power working mode or continuous measurement working mode) stored by the embodiment of the present application can be written into the measuring device in the rotary steering system before the measuring device is put into the well, or can be received by the measuring device and set after the rotary steering system sends a system instruction when setting parameters to the rotary steering system through the ground device during the drilling process. However, each working mode can only take effect after the rotary steering system is powered on again. In addition, the control board 311 is provided with a time module, the measuring device actively reads the local time after the rotary steering system is powered on, then reads the latest device working mode stored in the working mode storage area of the local memory, and finally writes the local time, power-on identifier and device working mode into the data storage area of the storage.

[0112] Figure 10 The figure is a working process diagram in the low-power mode of the formation resistivity measuring device for the rotary steering system of the embodiment of the present application. As shown in Figure 10 When the current device working mode is the low-power working mode, the control device B is configured to control the measuring device to be in standby state, and after receiving the system instruction sent by the rotary steering system, first diagnoses whether the system instruction is related to the measuring device, and then identifies the specific content of the system instruction. Among them, in the process of identifying the content of the system instruction, it includes: identifying in turn whether it is a measurement instruction, whether it is a reading instruction, whether it is a mode conversion instruction and whether it is a rotary steering time writing instruction.

[0113] Reference Figure 10If it is the low-power mode, the current measuring device is in standby state, and the main control module in the control device waits for the system instruction sent by the rotary steering system. When the main control module receives the system instruction, it first judges whether the current system instruction is related to the current formation resistivity measuring device. If it is related, it continues to identify the specific content of the current system instruction. If it is not related, it continues to standby and waits for the next system instruction. When identifying the specific content of the system instruction, it is judged whether the current system instruction is a resistivity measurement instruction. If it is a measurement instruction, the main control module in the control board 311 sends an instruction to the transmission control module in the transmission board 312, controls the third coil unit 213, the fourth coil unit 214, the fifth coil unit 215 and the sixth coil unit 216 to send electromagnetic wave signals in turn, and then the first coil unit 211 and the second coil unit 212 receive the electromagnetic wave signals. Then, the receiving control module in the receiving board 313 calculates the resistivity measurement data according to the received electromagnetic wave signals, and sends the resistivity measurement data to the main control module in the control board 311. The main control module in the control board 311 reads the local time of the current measuring device, stores the received data and the current local time in the data storage area of the local storage, so as to achieve the standby state and wait for the next system instruction.

[0114] If the current system instruction is not a resistivity measurement instruction, it is judged whether it is a read (data) instruction. If it is a read data instruction, the main control module in the control board 311 actively reads the latest formation resistivity measurement data in the data storage area of the local storage, and sends the measurement data to the rotary steering system. Then, it reads the local device time recorded by the current measuring device, and writes the local device time and the current data identification into the data storage area of the local storage, so as to achieve the standby state and wait for the next system instruction.

[0115] If the current system instruction is not a read data instruction, it is judged whether it is a mode conversion instruction. If it is a mode conversion instruction, the continuous measurement mode is written into the working mode storage area of the local storage, and the device time recorded by the current measuring device is read. The local device time, the working mode conversion identification and the time comparison identification are written into the working mode storage area of the local storage, so as to achieve the standby state and wait for the next system instruction.

[0116] If the current system instruction is not a mode conversion instruction, it is judged whether it is a rotary steering time writing instruction. If it is a rotary steering time writing instruction, the device time recorded by the current measuring device is read. The local device time, the time of the rotary steering system indicated in the current rotary steering time writing instruction and the time comparison identification are written into the working mode storage area of the local storage, so as to achieve the standby state and wait for the next system instruction.

[0117] If the current system instruction is not the time of the rotary steering system, the device time recorded by the current measuring device, the local device time, and the received unknown instruction identification are written into the local storage working mode storage area, so as to achieve a standby state and wait for the next system instruction.

[0118] Figure 11 The figure shows the working flow in the continuous working mode of the formation resistivity measuring device for the rotary steering system in the embodiment of the application. As shown in the figure, when the current device working mode is the continuous measuring working mode, the control device B is configured to control the resistivity measuring device C to perform the formation resistivity measuring task according to the preset measuring time interval. When a system instruction sent by the rotary steering system is received during the performance of the formation resistivity measuring task, the state of the current measuring device is reserved, and the interrupt program is entered, so that after the end of the interrupt program, the continuous measuring task is continued with the system state reserved as the starting point. Figure 11

[0119] In the interrupt program, the following is included: sequentially identifying whether it is a measuring instruction, whether it is a reading instruction, whether it is a mode conversion instruction, and whether it is a rotary steering time writing instruction.

[0120] Reference is made to the figure. Figure 11 If it is the continuous measuring working mode, the main control module in the control board 311 sends an instruction to the transmission control module in the transmission board 312, controls the third coil unit 213, the fourth coil unit 214, the fifth coil unit 215, and the sixth coil unit 216 to sequentially emit electromagnetic wave signals, and then the electromagnetic wave signals are received by the first coil unit 211 and the second coil unit 212. Then, the received electromagnetic wave receiving signals are calculated by the receiving control module in the receiving board 313 to obtain resistivity measuring data, and the resistivity measuring data is sent to the main control module in the control board 311. The main control module in the control board 311 reads the local time of the current measuring device, stores the received data and the current local time in the data storage area of the local storage, and then delays for 3 minutes, and repeats the above process of transmitting electromagnetic waves (resistivity measuring task).

[0121] When the rotary steering system sends a system instruction during the performance of the resistivity measuring task, the main control module in the control board 311 receives the system instruction, reserves the state of the current measuring device, and enters the interrupt program. After the system instruction is executed (i.e., the end of the interrupt program), the program returns to the previously saved device state, and the measurement of the formation resistivity is continued.

[0122] ​After entering the interrupt program, firstly, it is judged whether the current system instruction is a resistivity measurement instruction. If it is a measurement instruction, the main control module in the control board 311 reads the device time recorded by the current measurement device, stores the current local device time and the measurement instruction identification into the data storage area of the local storage, ends the interrupt program to go to the interrupt program exit, and then reaches the standby state and waits for the next system instruction.

[0123] If the current system instruction is not a measurement instruction, it is judged whether it is a read (data) instruction. If it is a read data instruction, the main control module in the control board 311 actively reads the latest formation resistivity measurement data in the data storage area of the local storage, sends the measurement data to the rotary steering system, reads the local device time recorded by the current measurement device, writes the local device time and the current data sending identification into the data storage area of the local storage, ends the interrupt program to go to the interrupt program exit, and then reaches the standby state and waits for the next system instruction.

[0124] If the current system instruction is not a read data instruction, it is judged whether it is a mode conversion instruction. If it is a mode conversion instruction, the continuous measurement working mode is written into the working mode storage area of the local storage, the local device time recorded by the current measurement device is read, the local device time and the working mode conversion identification are written into the working mode storage area of the local storage, the interrupt program is ended to go to the interrupt program exit, and then the standby state is reached and the next system instruction is waited.

[0125] If the current system instruction is not a mode conversion instruction, it is judged whether it is a rotary steering time writing instruction. If it is a rotary steering time writing instruction, the local device time recorded by the current measurement device is read, the local device time, the time of the rotary steering system indicated in the current rotary steering time writing instruction, and the time comparison identification are written into the working mode storage area of the local storage, the interrupt program is ended to go to the interrupt program exit, and then the standby state is reached and the next system instruction is waited.

[0126] If the current system instruction is not the time of the rotary steering system, the local device time recorded by the current measurement device is read, the local device time and the received unknown instruction identification are written into the working mode storage area of the local storage, the interrupt program is ended to go to the interrupt program exit, and then the standby state is reached and the next system instruction is waited.

[0127] On the other hand, based on the above-mentioned measurement device, the embodiment of the present application also provides a formation resistivity measurement method (hereinafter referred to as “measurement method”) for a rotary steering system. The formation resistivity measurement method is realized by using the formation resistivity measurement device as described above.

[0128] Figure 12 A step diagram of the method for measuring formation resistivity of a rotary steering system according to an embodiment of the present application is shown in FIG. 12. Figure 12 As shown in the figure, the method for measuring formation resistivity according to the present application comprises the following steps:

[0129] Step S1201: The control device B identifies the current device working mode and performs control on the formation resistivity measurement task matched with the device working mode.

[0130] Step S1202: The resistivity measurement device C performs the formation resistivity measurement task under the control of the control device B and calculates the resistivity measurement data.

[0131] Step S1203: The control device B acquires the resistivity measurement data calculated in step S1202 and sends the resistivity measurement data to the rotary steering system through the conductive member 120 arranged at both ends of the drill collar body 110.

[0132] The present application provides a device and method for measuring formation resistivity of a rotary steering system. The device and method comprise a coil member, a magnetic core, a measurement drill collar, a metal protection ring, a non-metal protection ring, a control device, a circuit cover plate, a conductive ring, etc. The coil packaging method of the present application is simple, has fewer production procedures, reduces material costs and shortens the production cycle. At the same time, the measurement device and method have two working modes of low power consumption and continuous measurement, and can control the switching of the two drilling modes, and can meet more needs. The device has a simple structure, is safe and reliable, can measure formation resistivity when drilling horizontal wells, high-inclination wells and other complex technology wells, and provides data for geosteering.

[0133] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A formation resistivity measuring device for a rotary steering system, comprising: a drill collar body, two ends of the drill collar body are respectively provided with conductive members, wherein the drill collar body is connected with the rotary steering system through the conductive members; a control device connected with the conductive members, configured to identify a current device working mode and perform control on a formation resistivity measuring task matched with the device working mode, so as to obtain resistivity measuring data, wherein the device working mode is a low-power consumption working mode or a continuous measuring working mode; a resistivity measuring device arranged on an outer wall of the drill collar body, configured to perform the formation resistivity measuring task and calculate the resistivity measuring data under the control of the control device, the resistivity measuring device comprises a plurality of first coil units for transmitting electromagnetic wave signals and a plurality of second coil units for receiving electromagnetic wave signals, wherein the first coil units are arranged inside a side wall of the drill collar body and connected with a master control module in the control device through a transmitting hole, wherein the transmitting hole provides a corresponding line connection channel for the connection between the master control module and each first coil unit; the second coil units are arranged inside the side wall of the drill collar body and connected with the master control module in the control device through a receiving hole, wherein the receiving hole provides a corresponding line connection channel for the connection between the master control module and each second coil unit, wherein the coil unit comprises: a component groove for accommodating a current coil unit, the component groove is configured as an annular groove circumferentially surrounding an outer wall of the drill collar body; a sealing groove arranged at a middle position of the component groove, configured as an annular groove circumferentially surrounding a groove bottom side wall of the component groove, a radial section of the component groove is configured as a convex structure; a coil groove for accommodating a coil piece, the coil groove is configured at a middle position in a width direction of the sealing groove and configured as an annular groove circumferentially surrounding a groove bottom side wall of the sealing groove; a plurality of magnetic core grooves, configured to be uniformly distributed in a circumferential direction at a preset angle, wherein each magnetic core groove is configured to cover a drill collar side wall groove structure formed by the component groove, the sealing groove and the coil groove; a plurality of magnetic cores, each magnetic core is placed in the magnetic core groove; the coil piece is configured to be wound in the coil groove by copper wire; a rubber ring is configured to be formed by sealing glue in the sealing groove; a first non-metallic ring and a second non-metallic ring are respectively arranged at both ends of the groove in the component groove, each non-metallic ring is circumferentially surrounded around the groove end of the component groove with a convex structure as a radial section, and simultaneously covers the end of the drill collar body and the magnetic core groove. A metal ring between the first non-metal ring and the second non-metal ring, the metal ring is configured to cover the end position of the rubber ring and each non-metal ring at the same time, and the radial cross-sectional structure of the metal ring matches the radial cross-sectional structure of each non-metal ring, so that the outer edge of each non-metal ring and metal ring is flush with the side wall edge of the drill collar body.

2. The formation resistivity measuring device according to claim 1, wherein, The control device is further configured to obtain power energy and instructions provided by the rotary steering system, wherein, after the power energy is reacquired, the current device operation mode written before entering the well or set by the ground device is read, and wherein the power energy is provided by the rotary steering system to the control device when mud circulation or system power is reacquired.

3. The formation resistivity measuring device of claim 2, wherein, The formation resistivity measuring device further comprises bus holes in communication with the conductive members at both ends of the drill collar body, the bus holes being arranged inside the side wall of the drill collar body, wherein, The bus holes comprise a first bus hole and a second bus hole, the first bus hole being configured to provide a line connection channel for the connection of the first conductive member to the control device, and the second bus hole being configured to provide a line connection channel for the connection of the second conductive member to the control device.

4. The formation resistivity measuring device of claims 2 or 3, wherein, The control device comprises: A power module configured to acquire the power energy through the conductive members and convert the power energy into different levels of voltage to provide corresponding power supply for each module in the control device; A master control module configured to acquire system instructions sent by the rotary steering system through the conductive members, read the content of the system instructions, and send the data obtained by the current measurement to the rotary steering system through the conductive members after obtaining the resistivity measurement data; A transmission control module connected to the master control module through a wiring hole and configured to control the resistivity measurement device to perform formation resistivity measurement tasks under the control of the measurement instructions when the master control module reads the measurement instructions; A receiving control module connected to the master control module through a wiring hole and configured to receive electromagnetic wave receiving signals fed back by the resistivity measurement device in real time, calculate the resistivity measurement data, and send the real-time measured data to the master control module.

5. The formation resistivity measuring device of claim 1, wherein, The metal ring further comprises: A plurality of inlaid blocks uniformly distributed in the circumferential direction at the middle position of the radial cross-section of the metal ring.

6. The formation resistivity measuring device of claim 1, wherein, The coil unit further comprises a pin hole arranged at the coil slot in each coil unit, the pin hole being in communication with the receiving hole or the transmission hole, and a sealing pin being arranged in the pin hole and connected to both ends of the coil.

7. The formation resistivity measuring device of claim 2, wherein, In the current device operation mode is a low-power operation mode, wherein, The control device is further configured to control the measurement device to be in a standby state, and after receiving the system instruction sent by the rotary steering system, diagnose whether the system instruction is related to the measurement device, and identify the specific content of the system instruction, wherein in the process of identifying the content of the system instruction, the following steps are included: sequentially identifying whether it is a measurement instruction, whether it is a reading instruction, whether it is a mode conversion instruction, and whether it is a rotary steering time writing instruction.

8. The formation resistivity measuring device according to claim 7, characterized in that, The control device is further configured to, when the current system instruction is a reading instruction, read the latest resistivity measurement data in the local storage, send the measurement data to the rotary steering system, and write the device time recorded by the current measurement device and a data sending identifier into the local storage.

9. The formation resistivity measuring device according to claim 7, characterized in that, The control device is further configured to, when the current system instruction is a mode conversion instruction, write a continuous measurement working mode into the local storage, and write the device time recorded by the current measurement device and a mode conversion identifier into the local storage.

10. The formation resistivity measuring device according to claim 7, characterized in that, The control device is further configured to, when the current system instruction is not a rotary steering time writing instruction, read the device time recorded by the current measurement device, and write the current device time and an unknown instruction receiving identifier into the local storage.

11. The formation resistivity measuring device of claim 2, wherein, When the current device working mode is a continuous measurement working mode, wherein, The control device is further configured to control the resistivity measuring device to perform a formation resistivity measurement task according to a preset measurement time interval, wherein when a system instruction sent by the rotary steering system is received, the state of the current measurement device is reserved, and an interruption program is entered, so that after the interruption program ends, the continuous measurement task is continued with the reserved device state as a starting point, wherein in the interruption program, the following steps are included: sequentially identifying whether it is a measurement instruction, whether it is a reading instruction, whether it is a mode conversion instruction, and whether it is a rotary steering time writing instruction.

12. The formation resistivity measuring device of claim 11, wherein, In the interruption program, the following steps are included: The control device is further configured to, when the current system instruction is a measurement instruction, read the device time recorded by the current measurement device, and write the current device time and a measurement instruction identifier into the local storage, thereby ending the interruption program.

13. The formation resistivity measuring device according to claim 11, characterized in that, The control device is further configured to, when the current system instruction is a mode conversion instruction, write a low-power-consumption mode into the local storage, and write the device time recorded by the current measurement device and a mode conversion identifier into the local storage, thereby ending the interruption program.

14. The formation resistivity measuring device according to claim 11, characterized in that, The control device is further configured to read the device time recorded by the current measuring device and write the current device time and the received unknown instruction identifier into the local storage when the current system instruction is not a rotary steering time writing instruction, thereby ending the interrupt program.

15. The formation resistivity measuring device according to claim 1, characterized in that, The coil unit is further connected with the control device through a tuning module, wherein the tuning module is installed inside the sidewall of the drill collar body, and a tuning cover plate is arranged on the outer side of the tuning module, and the outer side edges of the tuning cover plate are flush with the sidewall edges of the drill collar body.

16. A method for formation resistivity measurement for a rotary steerable system, the method comprising: The formation resistivity measuring method is implemented by using the formation resistivity measuring device according to any one of claims 1-15, and the formation resistivity measuring method comprises: The control device identifies the current device working mode and performs execution control on the formation resistivity measuring task matched with the device working mode; The resistivity measuring device performs the formation resistivity measuring task under the control of the control device and calculates resistivity measurement data; The control device acquires the resistivity measurement data and transmits the resistivity measurement data to the rotary steering system through the conductive members arranged at both ends of the drill collar body.

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