A cable logging communication method and system

Abstract

The present invention discloses a cable logging communication method and system, comprising: receiving a synchronous pulse signal transmitted from the ground, wherein the synchronous pulse signal is a signal that transmits a receiving synchronous pulse and a communication synchronous pulse in a fixed period in a preset order and an alternating time interval; the cable communication module and the signal receiving and acquisition module respectively count the pulses of the synchronous pulse signal, and judge the type of the current synchronous pulse signal according to the corresponding counting results; according to the current signal type, determine the first working mode and the second working mode corresponding to the current logging instrument, and then execute the corresponding control strategy of the first working mode and disable the second working mode. The present invention can reduce the adverse effects of logging cable communication on weak received signals.

Description

Technical Field

[0001] The invention relates to the technical field of mine geophysical logging, and in particular to a cable logging communication method. Background Art

[0002] In interwell electromagnetic and interwell acoustic logging, transient electromagnetic and acoustic long-distance logging, electromagnetic waves and acoustic waves need to penetrate metal casings to reach the receiver. The received signals are extremely weak, with signal amplitudes in the microvolt and nanovolt levels, and such signals are easily interfered with. In addition, the signals measured in real time in cable logging need to be converted into digital signals, which need to be sent to the logging cable through signal modulation and cable drive. Since the logging cable is long, generally more than 5,000 meters, in order to ensure accurate demodulation and recovery on the ground, the signals sent to the cable must be amplified and driven, and the amplified signals reach about 10-15 volts. Since these cable signals are AC pulsating signals, corresponding electromagnetic induction signals will be generated. These AC pulsating signals are huge compared to the microvolt and nanovolt signals that are useful to the formation received by the receiver, which will seriously affect the precision and accuracy of the measurement.

[0003] Therefore, the prior art needs to provide a new solution that can solve the problem that the useful formation signal received by the receiver in inter-well electromagnetic and inter-well acoustic logging or transient electromagnetic and acoustic long-distance logging is interfered by the cable signal, so as to improve the precision and accuracy of the logging data. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a cable logging communication method, comprising: receiving a synchronization pulse signal transmitted from the ground, wherein the synchronization pulse signal is a signal that transmits a transmission and reception synchronization pulse and a communication synchronization pulse in a fixed period in a preset order and an alternating time interval; the cable communication module and the signal receiving and acquisition module respectively count the pulses of the synchronization pulse signal, and judge the type of the current synchronization pulse signal according to the corresponding counting results; according to the current signal type, determine the first working mode and the second working mode corresponding to the current logging instrument, and then execute the corresponding control strategy of the first working mode and disable the second working mode.

[0005] Preferably, in the step of determining the first working mode and the second working mode corresponding to the current logging instrument according to the current signal type, and then executing the corresponding control strategy of the first working mode and disabling the second working mode, it includes: when the current signal type is the transmission and reception of synchronous pulses, determining that the first working mode is the inter-well communication and data acquisition mode, and the second working mode is the ground communication mode, and then digitizing the first data body obtained by the current inter-well communication, and sending the digitized processing result to the memory in the cable communication module for downhole storage.

[0006] Preferably, when the current signal type is a communication synchronization pulse, the first working mode is determined to be a ground communication mode, and the second working mode is determined to be an inter-well communication and data acquisition mode, and then the stored data is modulated and cable driven, and the processed transmission information is transmitted to the ground via a cable.

[0007] Preferably, the step of judging the type of the current synchronization pulse signal according to the corresponding counting result includes: judging the current real-time function mode of the downhole instrument according to the current pulse counting result, in combination with the transmission synchronization number, receiving synchronization number and communication synchronization number corresponding to different functional stages, and determining the corresponding pulse signal type according to the real-time function mode.

[0008] Preferably, the method further includes: extracting the synchronization pulse signal from a high-precision time module in a surface machine, and transmitting the synchronization pulse signal to a downhole instrument via a communication cable; starting the current fixed cycle and having the surface machine count the pulses of the synchronization pulse signal.

[0009] Preferably, the surface machine receives the transmission information obtained from the underground via the communication cable and performs signal recovery, and the current fixed cycle ends to start the next fixed cycle.

[0010] Preferably, the method further comprises: performing shaping and driving processing on the extracted synchronization pulse signal, so as to transmit the processed synchronization pulse signal to the wellbore.

[0011] On the other hand, the present invention also provides a cable logging communication system, which is used to execute according to the cable logging communication method as described above, and the system includes: a downhole instrument, wherein the downhole instrument has: a signal receiving and acquisition module, which is used to receive a synchronization pulse signal transmitted from the ground, and count the pulses of the signal, so as to send the current calculation result to the cable communication module, wherein the synchronization pulse signal is a signal that sends the transmission and reception synchronization pulse and the communication synchronization pulse in a fixed period in a preset order and alternating time interval; the cable communication module is used to receive the synchronization pulse signal synchronously with the signal receiving and acquisition module, count the pulses of the signal, and judge the type of the current synchronization pulse signal according to the two pulse counting results, and then determine the first working mode and the second working mode corresponding to the current logging instrument according to the current signal type, and finally execute the corresponding control strategy of the first working mode and disable the second working mode.

[0012] Preferably, the cable communication module is further used to determine that the first working mode is the inter-well communication and data acquisition mode, and the second working mode is the ground communication mode when the current signal type is the transmission and reception synchronization pulse, and then digitize the first data body obtained by the current inter-well communication, and send the digitized processing result to the memory in the cable communication module for downhole storage.

[0013] Preferably, the system also includes: a surface machine, wherein the surface machine is used to extract the synchronization pulse signal from the high-precision time module, transmit the synchronization pulse signal to the downhole instrument through a communication cable, and start the current fixed cycle and count the pulses of the synchronization pulse signal.

[0014] Compared with the prior art, one or more embodiments of the above scheme may have the following advantages or beneficial effects:

[0015] The present invention discloses a cable logging communication method and system. The method and system start and stop the receiving and collecting functions and the cable communication function of the downhole instrument through a synchronous pulse control signal, reduce the interference of the logging cable communication on the weak received signal, ensure that the cable communication is turned off when transmitting, receiving and collecting signals, and turn off the transmission, reception and collection during cable communication, and ensure that the two modes do not interfere with each other. The present invention is simple and reliable to implement, easy to implement, and can greatly reduce the adverse effects of the logging cable communication on the weak received signal.

[0016] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a step diagram of the cable logging communication method according to an embodiment of the present application.

[0019] Figure 2 It is a flow chart of the cable logging communication method according to an embodiment of the present application.

[0020] Figure 3 It is a schematic diagram of the structure of the cable logging communication system of the embodiment of the present application. DETAILED DESCRIPTION

[0021] The following will describe the implementation methods of the present invention in detail with reference to the accompanying drawings and embodiments, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. It should be noted that as long as there is no conflict, the various embodiments of the present invention and the various features in the embodiments can be combined with each other, and the technical solutions formed are all within the protection scope of the present invention.

[0022] In addition, the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions. Also, although a logical sequence is shown in the flowchart, in some cases, the steps shown or described can be performed in a sequence different from that here.

[0023] In interwell electromagnetic and interwell acoustic logging, transient electromagnetic and acoustic long-distance logging, electromagnetic waves and acoustic waves need to penetrate metal casings to reach the receiver. The received signals are extremely weak, with signal amplitudes in the microvolt and nanovolt levels, and such signals are easily interfered with. In addition, the signals measured in real time in cable logging need to be converted into digital signals, which need to be sent to the logging cable through signal modulation and cable drive. Since the logging cable is long, generally more than 5,000 meters, in order to ensure accurate demodulation and recovery on the ground, the signals sent to the cable must be amplified and driven, and the amplified signals reach about 10-15 volts. Since these cable signals are AC pulsating signals, corresponding electromagnetic induction signals will be generated. These AC pulsating signals are huge compared to the microvolt and nanovolt signals that are useful to the formation received by the receiver, which will seriously affect the precision and accuracy of the measurement.

[0024] Therefore, in order to solve the above technical problems, the present invention provides a cable logging communication method and system. The method and system use synchronous control signals to time-share control the receiving and collecting functions of the downhole instrument and the cable communication function, and only one function is controlled to be effective at the same time, thereby effectively reducing the adverse effects of cable communication on the signal receiving and collecting functions of the downhole logging instrument, and solving the problem that the useful formation signal received by the receiver in the inter-well electromagnetic and inter-well acoustic logging or transient electromagnetic and acoustic long-distance logging is interfered by the cable signal, so as to improve the precision and accuracy of the logging data.

[0025] Figure 1 This is a step diagram of the cable logging communication method of the embodiment of the present application. Figure 1 The cable logging communication method described in the embodiment of the present invention is described.

[0026] In step S110, the downhole logging instrument receives the synchronization pulse signal transmitted from the ground. In the actual well-to-well electromagnetic and well-to-well acoustic logging technology or transient electromagnetic and acoustic long-distance logging technology, the ground equipment (surface machine) will be connected to the downhole logging instrument through a cable for communication. In step S110, the downhole logging instrument will receive the synchronization pulse signal transmitted from the surface machine through the communication cable. Among them, the synchronization pulse signal is a signal that transmits the transmission and reception synchronization pulse and the communication synchronization pulse in a fixed period according to a preset order and alternating time intervals.

[0027] In the embodiment of the present invention, the fixed cycle is a cycle experienced by the surface equipment and the downhole logging instrument for information transmission and data acquisition (i.e., the time experienced by the surface equipment from starting a new cycle to receiving the measurement data transmitted by the downhole instrument and completing the data recovery process). In a fixed cycle, the surface equipment will continuously send synchronization pulse signals to the downhole. More specifically, in a fixed cycle, the surface equipment will send transmission and reception synchronization pulses (i.e., transmission and reception instructions based on synchronization pulses) and communication synchronization pulses (communication instructions based on synchronization pulses) to the downhole logging instrument in a time-sharing manner through the communication cable in a preset order and at a preset alternating time interval.

[0028] For example: within a fixed cycle, the communication synchronization pulse and the transmit-receive synchronization pulse are sent in a time-sharing manner in the order of first sending the communication synchronization pulse and lasting for the first time period, and then sending the transmit-receive synchronization pulse and lasting for the second time period, wherein the sum of the first time period and the second time period is a fixed cycle; within a fixed cycle, the communication synchronization pulse and the transmit-receive synchronization pulse are sent in a time-sharing manner in the order of first sending the communication synchronization pulse and lasting for the first time period, and then sending the transmit-receive synchronization pulse and lasting for the second time period, and the aforementioned order is continuously repeated, wherein the sum of the first time period and the second time period is: a fixed cycle time divided by the number of cycles.

[0029] In step S120, during the process of the downhole logging instrument continuously receiving the synchronous pulse signal sent in step S110, the cable communication module and the signal receiving and collecting module in the downhole logging instrument respectively count the pulses of the synchronous pulse signal received in real time, and judge the type of the current synchronous pulse signal according to the counting results of the two modules. In step S120, the cable communication module is needed to count the pulses of the synchronous pulse signal received in real time, and the signal receiving and collecting module also counts the pulses of the synchronous pulse signal received in real time, and then, according to the counting results of the two modules, judge whether the current synchronous pulse signal is a communication synchronous pulse signal or a transmission and reception synchronous pulse signal, so as to enter step S130.

[0030] In step S130, the cable communication module determines the first working mode and the second working mode corresponding to the current downhole logging instrument according to the current signal type judgment result, and then executes the corresponding control strategy of the first working mode and disables the second working mode. In the embodiment of the present invention, the first working mode is the working mode corresponding to the current signal type judgment result. The second working mode is another working mode of the downhole logging instrument other than the current first working mode.

[0031] In an embodiment of the present invention, the working modes of the downhole logging instrument are divided into two types, one of which is the inter-well communication and data acquisition mode. Under this working mode, the downhole logging instrument in the embodiment of the present invention will perform acoustic transmission communication with instruments located at other downhole locations (such as inter-well acoustic logging communication and acoustic long-distance logging), thereby completing the collection of the corresponding logging data transmitted (i.e., direct communication between different downhole instruments); and the other working mode is the ground communication mode. Under this working mode, the current downhole logging instrument communicates with the ground machine through a communication cable (i.e., direct communication between the downhole and the ground).

[0032] In one embodiment, in step S130, when the current signal type is a communication synchronization pulse signal, the first working mode is determined to be a ground communication mode, and the second working mode is determined to be an inter-well communication and data acquisition mode, thereby executing the corresponding control strategy of the current first working mode and disabling the second working mode. At this time, the downhole logging instrument only communicates with the ground machine, and does not collect logging data corresponding to the downhole communication.

[0033] In another embodiment, in step S130, when the current signal type is a transmitting and receiving synchronous pulse signal, the first working mode is determined to be an inter-well communication and data acquisition mode, and the second working mode is determined to be a ground communication mode, thereby executing the corresponding control strategy of the current first working mode and disabling the second working mode. At this time, the downhole logging instrument only communicates with other downhole instruments, but not with the ground machine.

[0034] Thus, an extremely weak signal cable logging communication method is provided in an embodiment of the present invention, which uses a synchronous control signal to switch between the receiving and collecting mode and the cable communication mode, thereby effectively reducing the adverse effects of the cable logging communication on signal reception and collection.

[0035] Figure 2 Schematic diagram of the process of the cable logging communication method of the present application embodiment. Figure 2 , the cable logging communication method described in the embodiment of the present invention is described in detail.

[0036] Before the measurement task is started, in step P0 (not shown), the surface machine extracts the synchronization pulse signal from the high-precision time module 1 and transmits the currently extracted synchronization pulse signal to the downhole instrument through the communication cable. Figure 3 ) The surface machine is equipped with a clock extraction module 2 and a high-precision time module 1. Among them, the extraction rules of the synchronization pulse signal are written into the clock extraction module 2, so that the clock extraction module 2 is used to extract the synchronization pulse signal that satisfies the time-sharing transmission of the transmission and reception synchronization pulse and the communication synchronization pulse in a fixed period according to the preset order and alternating time intervals. Therefore, in step P0, the clock extraction module 2 in the surface machine will extract the synchronization pulse signal that meets the preset rules from the high-precision time module 1, and transmit the currently extracted synchronization pulse signal to the downhole instrument through the communication cable, thereby entering step P1. Among them, the synchronization pulse signal is a signal that sends the transmission and reception synchronization pulse and the communication synchronization pulse in a fixed period according to the preset order and alternating time intervals. In an embodiment of the present invention, the high-precision time module 1 is preferably a GPS timing module.

[0037] In addition, in an embodiment of the present invention, step P0 will also perform shaping and cable driving processing on the extracted synchronization pulse signal, thereby transmitting the synchronization pulse signal after shaping and cable driving processing to the downhole logging instrument to ensure that it is received by the downhole cable communication module 3 and the signal receiving and acquisition module 4.

[0038] Step P1 starts the current fixed cycle and the ground machine counts the pulses of the synchronization pulse signal extracted in step P0, thereby entering step P2. Step P2 The downhole logging instrument receives the synchronization pulse signal transmitted from the ground. In step P2, the synchronization pulse signal reaches the cable communication module 3 and the signal receiving and acquisition module 4 in the downhole logging instrument via the communication cable. Step P3 uses the cable communication module to count the pulses of the synchronization pulse signal received in real time, and step P4 also uses the signal receiving and acquisition module to count the pulses of the synchronization pulse signal received in real time, and in step P5, the cable communication module 3 determines the type of the currently received synchronization pulse signal as a transmission and reception synchronization pulse signal or a communication synchronization pulse signal based on the pulse counting statistics of the cable communication module and the signal receiving and acquisition module.

[0039] Specifically, in step P5, the cable communication module 3 and the signal receiving and collecting module 4 in the downhole logging instrument will count the pulses of the synchronization pulse signal, and judge the current downhole instrument real-time function mode in combination with the transmission synchronization number, reception synchronization number and communication synchronization number corresponding to different functional stages, and determine the corresponding pulse signal type according to the real-time function mode. In the embodiment of the present invention, since the synchronization pulse signal is a signal that transmits the transmission and reception synchronization pulse and the communication synchronization pulse in a fixed period according to a preset order and an alternating time interval, the downhole logging instrument usually has three functional stages, namely, the transmission stage of the transmission and reception stage, the reception stage of the transmission and reception stage, and the communication synchronization stage, and the time corresponding to each functional stage is the time formed by the corresponding fixed number of synchronization pulses (wherein the number of synchronization pulses corresponding to different functional stages matches the aforementioned alternating time interval). When the real-time counting result reaches the number of synchronization pulses corresponding to the transmitting stage, the number of synchronization pulses corresponding to the receiving stage, or the number of synchronization pulses corresponding to the communication synchronization stage, the functional stage of the current downhole logging instrument is determined. When it is in the transmitting stage or the receiving stage, the current pulse signal type is the transmitting and receiving synchronization pulse; when it is in the communication synchronization stage, the current pulse signal type is the communication synchronization pulse.

[0040] Further, when the current signal type is a transmitting and receiving synchronous pulse signal, the process proceeds from step P5 to step P6, where the cable communication module 3 determines that the current first working mode is the well-to-well communication and data acquisition mode, and the current second working mode is the ground communication mode, and then digitizes the first data body collected by the current well-to-well communication (the current downhole logging instrument communicates with other downhole instruments), and sends the digitized processing result to the memory inside the cable communication module 3 for downhole storage, thereby caching the currently collected first data body. In step P6, the cable communication module 3 controls the downhole logging instrument to stop communicating with the ground machine, and controls the signal receiving and acquisition module 4 to communicate with other downhole instruments for transmission, reception and acquisition, so that after transmission, reception and acquisition, the information of the real-time collected signal after digitization is sent to the memory of the cable communication module 3, so as to cache the collected logging information.

[0041] Further, when the current signal type is a communication synchronization pulse signal, the process proceeds from step P5 to step P7, where the cable communication module 3 determines that the current first working mode is the ground communication mode, and the current second working mode is the well-to-well communication and data acquisition mode, and then modulates and drives the stored data, and transmits the processed transmission information to the ground through the cable. In step P7, the cable communication module 3 controls the signal receiving and acquisition module 4 in the downhole logging instrument to stop transmitting, receiving and acquiring, and modulates and drives the logging information cached in the memory of the cable communication module 3, and then transmits the logging information after modulation and cable drive processing to the ground machine through the communication cable, thereby proceeding to step P8.

[0042] In step P8, the communication demodulation module 5 in the surface machine receives the transmitted logging information obtained from the underground through the communication cable, and uses the communication demodulation module 5 to perform signal recovery on the currently transmitted information. Then, in step P9, the pulse counting of the synchronous pulse signal for the current fixed cycle is ended, and the current fixed cycle is ended to start the next fixed cycle. In addition, at the end of the current fixed cycle, the next fixed cycle is started from step P9 to step P1, and the counting of the synchronous pulse signal of the next fixed cycle is started until all measurement tasks are completed.

[0043] Based on the above cable logging communication method, an embodiment of the present invention further provides a cable logging communication system, wherein the cable logging communication system described in the embodiment of the present invention is executed according to the steps and processes described in the above cable logging communication method.

[0044] Figure 3 Schematic diagram of the structure of the cable logging communication system of the embodiment of the present application. Figure 3The cable logging communication system described in the present invention includes a downhole (logging) instrument. The downhole logging instrument includes: a signal receiving and acquisition module 4 and a cable communication module 3. The signal receiving and acquisition module 4 is used to receive the synchronization pulse signal transmitted from the ground, and count the pulses of the signal, so as to send the current calculation result to the cable communication module. The synchronization pulse signal is a signal that transmits the transmission and reception synchronization pulse and the communication synchronization pulse in a fixed period in a preset order and alternating time interval. The cable communication module 3 is used to receive the synchronization pulse signal synchronously with the signal receiving and acquisition module, count the pulses of the signal, and judge the type of the current synchronization pulse signal according to the two pulse counting results, and then determine the first working mode and the second working mode corresponding to the current logging instrument according to the current signal type, and finally control the downhole instrument to execute the corresponding control strategy of the first working mode and disable the second working mode.

[0045] Furthermore, the cable communication module 3 is also used to determine that the current first working mode is the inter-well communication and data acquisition mode, and the current second working mode is the ground communication mode when the current signal type is the transmission and reception synchronization pulse, and then digitize the first data body obtained by the current inter-well communication, and send the digitized processing result to the memory in the cable communication module for underground storage.

[0046] Furthermore, the cable communication module 3 is also used to determine that the current first working mode is the ground communication mode and the current second working mode is the inter-well communication and data acquisition mode when the current signal type is a communication synchronization pulse, and then modulate and cable drive the stored data, and transmit the processed transmission information to the ground via the cable.

[0047] Furthermore, the cable logging communication system described in the embodiment of the present invention also includes: a surface machine. Among them, the surface machine includes a high-precision time module 1, a clock extraction module 2 and a communication demodulation module 5. Specifically, the surface machine is used to extract the synchronization pulse signal from the high-precision time module 1 through the clock extraction module 2, and use the clock extraction module 2 to transmit the synchronization pulse signal to the downhole instrument through the communication cable, and start the current fixed cycle and count the pulses of the synchronization pulse signal. In addition, the communication demodulation module 5 in the surface machine is used to receive the transmitted logging information obtained from the downhole through the communication cable, and perform signal recovery on the currently transmitted information. In the embodiment of the present invention, the high-precision time module 1 is preferably a GPS timing module.

[0048] The present invention discloses a cable logging communication method and system. The method and system start and stop the receiving and collecting functions and the cable communication function of the downhole instrument through a synchronous pulse control signal, reduce the interference of the logging cable communication on the weak received signal, ensure that the cable communication is turned off when transmitting, receiving and collecting signals, and turn off the transmission, reception and collection during cable communication, and ensure that the two modes do not interfere with each other. The present invention is simple and reliable to implement, easy to implement, and can greatly reduce the adverse effects of the logging cable communication on the weak received signal.

[0049] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any person familiar with the technology within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

[0050] It should be understood that the embodiments disclosed in the present invention are not limited to the specific structures, processing steps or materials disclosed herein, but should be extended to equivalent substitutions of these features understood by ordinary technicians in the relevant field. It should also be understood that the terms used herein are only used for the purpose of describing specific embodiments and are not meant to be limiting.

[0051] The "one embodiment" or "embodiment" mentioned in the specification means that the specific features, structures or characteristics described in conjunction with the embodiment are included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment" or "embodiment" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0052] Although the embodiments disclosed in the present invention are as above, the contents described are only embodiments adopted for facilitating the understanding of the present invention and are not intended to limit the present invention. Any technician in the technical field to which the present invention belongs can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in the present invention, but the patent protection scope of the present invention shall still be subject to the scope defined in the attached claims.

Claims

1. A cable logging communication method, characterized in that: include: Receiving a synchronization pulse signal transmitted from the ground, wherein the synchronization pulse signal is a signal that transmits a transmission and reception synchronization pulse and a communication synchronization pulse in a time-sharing manner according to a preset order and an alternating time interval within a fixed period; The cable communication module and the signal receiving and collecting module respectively count the pulses of the synchronization pulse signal, and determine the type of the current synchronization pulse signal according to the corresponding counting results; According to the current signal type, the first working mode and the second working mode corresponding to the current logging instrument are determined, and then the corresponding control strategy of the first working mode is executed and the second working mode is disabled, which includes: When the current signal type is a transmitting and receiving synchronous pulse, determining that the first working mode is an inter-well communication and data acquisition mode, and the second working mode is a ground communication mode, and then digitizing the first data body obtained by the current inter-well communication, and sending the digitized processing result to the memory in the cable communication module for downhole storage; When the current signal type is a communication synchronization pulse, the first working mode is determined to be a ground communication mode, and the second working mode is determined to be an inter-well communication and data acquisition mode, and then the stored data is modulated and cable driven, and the processed transmission information is transmitted to the ground via a cable.

2. The cable logging communication method according to claim 1, characterized in that: The step of judging the type of the current synchronization pulse signal according to the corresponding counting result includes: According to the current pulse counting result, combined with the transmission synchronization number, reception synchronization number and communication synchronization number corresponding to different functional stages, the current downhole instrument real-time function mode is judged, and the corresponding pulse signal type is determined according to the real-time function mode.

3. The cable logging communication method according to claim 1 or 2, characterized in that: The method further comprises: Extract the synchronization pulse signal from the high-precision time module in the surface machine, and transmit the synchronization pulse signal to the downhole instrument through the communication cable; The current fixed cycle is started and the ground machine counts the pulses of the synchronization pulse signal.

4. The cable logging communication method according to claim 3, characterized in that: The surface machine receives the transmission information obtained from the underground through the communication cable and performs signal recovery. The current fixed cycle ends to start the next fixed cycle.

5. The cable logging communication method according to claim 3, characterized in that: The method further comprises: The extracted synchronization pulse signal is shaped and driven, so that the processed synchronization pulse signal is transmitted to the well.

6. A cable logging communication system, characterized in that: The system is used to execute the cable logging communication method according to any one of claims 1 to 5, and the system comprises: a downhole instrument, wherein the downhole instrument has: A signal receiving and collecting module, which is used to receive the synchronous pulse signal transmitted from the ground, and count the pulses of the signal, so as to send the current calculation result to the cable communication module, wherein the synchronous pulse signal is a signal that transmits the transmission and reception synchronous pulse and the communication synchronous pulse in a time-sharing manner according to a preset order and alternating time intervals within a fixed period; The cable communication module is used to synchronously receive the synchronous pulse signal with the signal receiving and acquisition module, count the pulses of the signal, and determine the type of the current synchronous pulse signal according to the two pulse counting results, and then determine the first working mode and the second working mode corresponding to the current logging instrument according to the current signal type, and finally execute the corresponding control strategy of the first working mode and disable the second working mode, wherein, The cable communication module is further used to determine that the first working mode is the well communication and data acquisition mode, and the second working mode is the ground communication mode when the current signal type is the transmission and reception synchronization pulse, and then digitize the first data body obtained by the current well communication, and send the digitization result to the memory in the cable communication module for downhole storage; The cable communication module is also used to determine that the first working mode is the ground communication mode and the second working mode is the well-to-well communication and data acquisition mode when the current signal type is a communication synchronization pulse, and then modulate and cable drive the stored data, and transmit the processed transmission information to the ground via the cable.

7. The cable logging communication system according to claim 6, characterized in that: The system further comprises: a ground machine, wherein: The surface machine is used to extract the synchronization pulse signal from the high-precision time module of the surface machine, transmit the synchronization pulse signal to the downhole instrument through the communication cable, and start the current fixed cycle and count the pulses of the synchronization pulse signal.

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