Logging instrument circuit device for measuring dielectric constant and resistivity

Abstract

The invention relates to the field of petroleum logging, and discloses a logging instrument circuit device for measuring dielectric constant and resistivity. The device comprises an array transmitting and receiving antenna which is used for generating a broadband electromagnetic field so as to measure stratum information of multiple depths; the broadband impedance matching module is used for matching transmitting and receiving circuit port impedance; the broadband coupler is used for measuring the absolute phase and amplitude of a transmitted signal and measuring the phase and amplitude of a reflected signal; the power amplifier is used for amplifying the power of the broadband signal; the A / D is used for synchronous sampling of multi-channel received signals; the signal processor is used for controlling detection of stratums with different depths and performing synchronous sampling of multi-channel received signals; processing the digital signals to obtain absolute phases and amplitudes of the signals of all the receiving channels; and the synchronous signal source is used for outputting three paths of synchronous signals. Detection of stratums with different depths is achieved, and the quality of a measurement curve can be monitored in real time.

Description

Technical Field

[0001] The present application relates to the technical field of petroleum logging, and in particular to a logging instrument circuit device for measuring dielectric constant and resistivity, a method for detecting formation dielectric constant and resistivity, determination of formation dielectric constant and resistivity, a storage medium, and electronic equipment. Background Art

[0002] The purpose of the background technology description provided here is to give an overall background of the present application. The statements in this section merely provide background related to the present application and do not necessarily constitute prior art.

[0003] Unconventional oil and gas resources such as deep oil and gas and shale oil and gas are feasible alternative energy sources in the future and are the new oil and gas layers that my country's oil and gas industry is currently focusing on exploring and developing.

[0004] Oil-based mud drilling fluid is often used in the development of deep oil and gas and shale oil and gas wells due to its advantages such as resistance to high temperature, resistance to salt and calcium invasion, good stability of wellbore wall and less damage to oil and gas layers. However, due to the non-conductivity of oil-based mud, conventional dual lateral isotropic DC resistivity logging technology cannot be applied to deep oil and gas and shale oil and gas wells using oil-based mud; at the same time, the resistivity of deep oil and gas and shale oil and gas reservoirs is relatively high, up to 10KΩ·M, which exceeds the effective measurement range of current conventional induction logging instruments.

[0005] Conventional induction and array induction logging instruments operate at frequencies of 10kHz to 150kHz, and can effectively measure formation resistivity of 0.2 to 100Ω·M, with a low measurement range. The operating frequency of electromagnetic wave logging while drilling is 250KHz to 2MHz, and it uses different transmission-reception spacings to perform multiple depth detections. Although this improves the resistivity measurement range of the instrument, its transmission-reception spacing is limited by the length of the drill collar, and the operating frequency is not high enough, resulting in a limited resistivity range. At the same time, the instrument usually ignores or reduces the influence of the dielectric constant, resulting in the measurement value of the electromagnetic wave logging while drilling instrument being greatly affected by the coupling of the resistivity and the dielectric constant in the high-resistance formation measurement environment, and the measurement result is not accurate enough.

[0006] However, the resistivity of deep oil and gas and shale oil and gas reservoirs is relatively high, usually between 100 and 10 KΩ·M. The above instruments cannot meet the exploration and development needs of high-resistance formations such as deep oil and gas and shale oil and gas. Summary of the invention

[0007] In view of the above problems, the present application proposes a well logging instrument circuit device for measuring dielectric constant and resistivity, a method for detecting dielectric constant and resistivity of formations, a method for determining dielectric constant and resistivity of formations, a storage medium and an electronic device. The invention innovatively proposes synchronous measurement of the absolute phase and amplitude value of the transmitting and receiving channel signals, increases the measurement information of the well logging instrument circuit without reducing the signal strength, and realizes the detection of deep formations by the well logging instrument; realizes the measurement of formations at different depths by the instrument, and obtains array dielectric constant and resistivity curves, which has the advantages of deep detection, high resolution, and rich information.

[0008] In a first aspect of the present application, a logging instrument circuit device for measuring dielectric constant and resistivity is provided, comprising:

[0009] An arrayed transmitting and receiving antenna 1 is used to generate a broadband electromagnetic field and combine the electromagnetic field responses of the formations at different transmitting-receiving source distances to measure formation information at multiple depths;

[0010] A broadband impedance matching module 2, electrically connected to the arrayed transmitting and receiving antenna 1, for matching the impedance of the transmitting and receiving circuit ports to achieve maximum power transmission and improve the receiving sensitivity of small signals;

[0011] The broadband coupler 4 is electrically connected to the power amplifier 5, and is used to couple the broadband transmission signal and monitor the transmission signal, and measure the absolute phase and amplitude of the transmission signal; and to couple the reflected signal of the arrayed transmission and receiving antenna 1, and measure the phase and amplitude of the reflected signal for instrument calibration;

[0012] A power amplifier 5, used for power amplification of broadband signals;

[0013] Analog-to-digital converter A / D9, used for conversion between analog and digital signals, and synchronous sampling of multi-channel received signals;

[0014] The signal processor 10 is electrically connected to the analog-to-digital converter A / D9, and is used to control the arrayed transmitting and receiving antennas 1 to detect strata at different depths; control the analog-to-digital converter A / D9 to perform synchronous sampling of multi-channel receiving signals; and process the digital signals to obtain the absolute phase and amplitude of each receiving channel signal;

[0015] The synchronization signal source 11 is electrically connected to the power amplifier 5 and the analog-to-digital converter A / D9 respectively, and is used to output three synchronization signals, namely, a broadband signal, a local oscillator signal and a synchronous acquisition main clock signal.

[0016] Furthermore, it also includes:

[0017] The intermediate frequency amplifier 8 is used to amplify the signal down-converted to a low frequency; wherein the signal processor is also used to control the intermediate frequency amplifier 8 to adjust the gain of the receiving channel to expand the dynamic range of receiving weak signals.

[0018] Furthermore, it also includes:

[0019] The low noise amplifier 6 is used to amplify the received weak signal to improve the measurement sensitivity.

[0020] Furthermore, it also includes:

[0021] The mixer 7 is used to convert the received wide-band high-frequency signal into a low-frequency signal.

[0022] Furthermore, the wideband signal is used as a transmitting signal; the local oscillator signal is used to mix with the transmitting signal to convert the wideband transmitting signal down to a low frequency for analog digitization and other processing; the synchronous acquisition master clock signal is used as the acquisition master clock signal of the analog-to-digital converter A / D9.

[0023] Furthermore, it also includes:

[0024] The radio frequency switch 3 is electrically connected to the broadband coupler 4 and the broadband impedance matching module 2 respectively, and is used to switch the transmitting antennas with different source distances in the arrayed transmitting and receiving antennas 1 to perform stratum detection at different depths.

[0025] A second aspect of the present application provides a method for detecting dielectric constant and resistivity of a formation, which is implemented based on the logging instrument circuit device for measuring dielectric constant and resistivity as described above, and the method comprises:

[0026] The signal generated by the synchronization signal source 11 is processed by the power amplifier 5 to obtain a processed signal;

[0027] The processed signal is sent to the wideband coupler 4 for signal measurement and monitoring; and the processed signal is loaded to the transmitting antenna of the arrayed transmitting and receiving antenna 1 through the radio frequency switch 3, and the working mode of the source distance antenna is switched through the radio frequency switch 3 according to preset requirements to detect strata at different depths.

[0028] A third aspect of the present application provides a method for determining a formation dielectric constant and resistivity, which is implemented based on the logging instrument circuit device for measuring dielectric constant and resistivity as described above, and the method comprises:

[0029] The broadband transmission signal coupled by the broadband coupler 4 is digitally converted by an analog-to-digital converter A / D9 to obtain a first digitized signal, and the absolute phase and amplitude of the first digitized signal are determined by a signal processor 10;

[0030] At the same time, the reflected signal of the arrayed transmitting and receiving antenna 1 coupled by the wideband coupler 4 is digitally converted to obtain a second digital signal, and the absolute phase and amplitude of the second digital signal are determined by the signal processor 10;

[0031] The high-frequency array logging system is calibrated according to the absolute phase and amplitude of the first digitized signal and the absolute phase and amplitude of the second digitized signal to determine the dielectric constant and resistivity curves of formations at different depths.

[0032] A fourth aspect of the present application provides a computer-readable storage medium, which stores a computer program that can be executed by one or more processors to implement the steps of the method described above.

[0033] The fifth aspect of the present application provides an electronic device, including a memory and one or more processors, wherein the memory stores a computer program, the memory and the one or more processors are communicatively connected to each other, and when the computer program is executed by the one or more processors, the steps of the method described above are implemented.

[0034] Compared with the prior art, the advantages or beneficial effects of the technical solution of the present application include:

[0035] An innovative circuit system with wide-band (MHz to GHz) high frequency applied to petroleum logging instruments was designed, which uses a multi-frequency working mode to measure the dielectric constant and resistivity of high-resistance formations of oil-based mud.

[0036] The innovative method of synchronously measuring the absolute phase and amplitude of the transmitting and receiving channel signals increases the measurement information of the logging instrument circuit without reducing the signal strength, thus realizing the detection of deep formations by the logging instrument.

[0037] The wide-band (MHz to GHz) working mode is adopted to achieve the measurement of strata at different depths, and obtain array dielectric constant and resistivity curves, which has the advantages of deep detection, high resolution and rich information.

[0038] It can perform circuit calibration in real time, monitor the quality of instrument measurement curve in real time, and improve the measurement accuracy of the instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in the relevant field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0040] It should also be noted that, for the convenience of description, only the parts related to the present disclosure are shown in the drawings. The drawings constituting a part of the specification of this application are used to provide a further understanding of the present application. The illustrative embodiments and their descriptions in this application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0041] Figure 1 A schematic diagram of the structure of a well logging instrument circuit device for measuring dielectric constant and resistivity provided in an embodiment of the present application;

[0042] Figure 2 A flow chart of a method for detecting dielectric constant and resistivity of a formation provided in an embodiment of the present application;

[0043] Figure 3 A flow chart of a method for determining the dielectric constant and resistivity of a formation provided in an embodiment of the present application. DETAILED DESCRIPTION

[0044] The following will describe the implementation methods of the present application in detail with reference to the accompanying drawings and embodiments, so that the implementation process of how the present application applies technical means to solve technical problems and achieve corresponding technical effects can be fully understood and implemented accordingly. The embodiments of the present application and the various features in the embodiments can be combined with each other without conflict, and the technical solutions formed are all within the protection scope of the present application.

[0045] It should be clear that the embodiments described below are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by technicians in the relevant field without making creative work are within the scope of protection of the present application.

[0046] The purpose of this application is to provide a dielectric constant and resistivity logging instrument circuit system and implementation method suitable for oil-based mud high-resistance formations. Through this patent, the distance between the transmitting and receiving antennas is increased, the combination of the transmitting and receiving antennas is optimized, the operating frequency of the instrument circuit system is increased to, and a multi-frequency working mode is adopted to improve the transmission power and receiving sensitivity of the instrument circuit system, thereby realizing the measurement of the dielectric constant and resistivity of oil-based mud high-resistance formations.

[0047] Embodiment 1

[0048] This embodiment provides a logging instrument circuit device for measuring dielectric constant and resistivity. Figure 1 A schematic diagram of a circuit device for measuring dielectric constant and resistivity of a well logging instrument provided in an embodiment of the present application is shown in FIG. Figure 1 As shown, the device disclosed in this embodiment includes:

[0049] An arrayed transmitting and receiving antenna 1 is used to generate a broadband electromagnetic field and combine the electromagnetic field responses of the formations at different transmitting-receiving source distances to measure formation information at multiple depths;

[0050] A broadband impedance matching module 2, electrically connected to the arrayed transmitting and receiving antenna 1, for matching the impedance of the transmitting and receiving circuit ports to achieve maximum power transmission and improve the receiving sensitivity of small signals;

[0051] The broadband coupler 4 is electrically connected to the power amplifier 5, and is used to couple the broadband transmission signal and monitor the transmission signal, and measure the absolute phase and amplitude of the transmission signal; and to couple the reflected signal of the arrayed transmission and receiving antenna 1, and measure the phase and amplitude of the reflected signal for instrument calibration;

[0052] A power amplifier 5, used for power amplification of broadband signals;

[0053] Analog-to-digital converter A / D9, used for conversion between analog and digital signals, and synchronous sampling of multi-channel received signals;

[0054] The signal processor 10 is electrically connected to the analog-to-digital converter A / D9, and is used to control the arrayed transmitting and receiving antennas 1 to detect strata at different depths; control the analog-to-digital converter A / D9 to perform synchronous sampling of multi-channel receiving signals; and process the digital signals to obtain the absolute phase and amplitude of each receiving channel signal;

[0055] The synchronization signal source 11 is electrically connected to the power amplifier 5 and the analog-to-digital converter A / D9 respectively, and is used to output three synchronization signals, namely, a broadband signal, a local oscillator signal and a synchronous acquisition main clock signal.

[0056] In some embodiments, it also includes:

[0057] The intermediate frequency amplifier 8 is used to amplify the signal down-converted to a low frequency; wherein the signal processor is also used to control the intermediate frequency amplifier 8 to adjust the gain of the receiving channel to expand the dynamic range of receiving weak signals.

[0058] In some embodiments, it also includes:

[0059] The low noise amplifier 6 is used to amplify the received weak signal to improve the measurement sensitivity.

[0060] In some embodiments, it also includes:

[0061] The mixer 7 is used to convert the received wide-band high-frequency signal into a low-frequency signal.

[0062] In some embodiments, the wideband signal is used as a transmitting signal; the local oscillator signal is used to mix with the transmitting signal to convert the wideband transmitting signal down to a low frequency for analog digitization and other processing; the synchronous acquisition master clock signal is used as the acquisition master clock signal of the analog-to-digital converter A / D9.

[0063] In some embodiments, it also includes:

[0064] The radio frequency switch 3 is electrically connected to the broadband coupler 4 and the broadband impedance matching module 2 respectively, and is used to switch the transmitting antennas with different source distances in the arrayed transmitting and receiving antennas 1 to perform stratum detection at different depths.

[0065] Optionally, the RF switch 3 may include multiple ones, which can be specifically configured according to actual needs.

[0066] As an example, the logging instrument circuit device for measuring dielectric constant and resistivity disclosed in this embodiment includes: an arrayed transmitting and receiving antenna 1, a broadband impedance matching module 2, a multi-channel radio frequency switch 3, a broadband coupler 4, a power amplifier 5, a low noise amplifier 6, a mixer 7, an intermediate frequency amplifier 8, an analog-to-digital converter A / D9, a signal processor 10 and a synchronization signal source 11.

[0067] Optionally, the analog-to-digital converter A / D9 includes a high-precision multi-channel synchronous analog-to-digital converter A / D.

[0068] Specifically, the following is a brief introduction to the functions of each module:

[0069] (1) Arrayed transmitting and receiving antennas 1: Generate a broadband electromagnetic field, combine the electromagnetic field responses of the formation at different transmitting-receiving source distances, and measure the formation information at multiple depths.

[0070] (2) Wideband impedance matching module 2: realizes the impedance of the transmitting and receiving antennas in a wide band (MHz to GHz) of 50 ohms, matches the impedance of the transmitting and receiving circuit ports, realizes maximum power transmission, and improves the sensitivity of small signal reception.

[0071] (3) Radio frequency switch 3: may include a multi-channel radio frequency switch to switch transmitting antennas with different source distances to perform ground detection at different depths.

[0072] (4) Wideband coupler 4: A four-port coupler at the front end of the antenna RF switch. Its main functions include: ① coupling wideband (MHz~GHz) transmission signals, monitoring the transmission signals, and measuring the absolute phase and amplitude of the transmission signals; ② coupling the reflected signals from the antenna end, measuring the phase and amplitude of the reflected signals, and calibrating the instrument.

[0073] (5) Power amplifier 5: Amplifies the power of broadband (MHz to GHz) signals.

[0074] (6) Low noise amplifier 6: Amplifies the received weak signal to improve the measurement sensitivity of the instrument.

[0075] (7) Mixer 7: Converts the received wideband (MHz to GHz) high-frequency signal down to a low frequency.

[0076] (8) Intermediate frequency amplifier 8: amplifies the down-converted low-frequency signal.

[0077] (9) Signal processor 10: As the main control and signal processing unit of the downhole circuit system, it controls the working status of the instrument, including: ① controlling the multi-channel RF switch at the antenna end to switch the transmitting antennas with different source distances to detect strata at different depths; ② controlling the intermediate frequency amplifier processors of multiple receiving channels to adjust the gain of the receiving channels and expand the dynamic range of receiving weak signals; ③ controlling the high-precision multi-channel synchronous analog-to-digital converter A / D to perform synchronous sampling of multi-channel receiving signals; ④ performing correlation signal processing on the digital signal to solve the absolute phase and amplitude of each receiving channel signal.

[0078] (11) Synchronous signal source 11: As the synchronization source of each circuit unit of the instrument circuit system, it outputs three synchronous signals: ① wideband (MHz~GHz) signal, used as the transmission signal; ② local oscillator signal, mixed with the transmission signal (MHz~GHz). The wideband transmission signal is downconverted to a low frequency for analog digitization and other processing. ③ Synchronous acquisition master clock signal, used as the acquisition master clock signal of the high-precision multi-channel synchronous analog-to-digital converter A / D.

[0079] Embodiment 2

[0080] This embodiment discloses a method for detecting the dielectric constant and resistivity of a formation, which can be applied to the well logging instrument circuit device for measuring the dielectric constant and resistivity disclosed in the above embodiments.

[0081] Furthermore, based on the first embodiment, the method disclosed in this embodiment is further explained and illustrated by way of example. Figure 2 As shown, the method disclosed in this embodiment includes the following steps:

[0082] Step 210: Process the signal generated by the synchronization signal source 11 through the power amplifier 5 to obtain a processed signal;

[0083] Step 220, sending the processed signal to the wideband coupler 4 for signal measurement and monitoring; and loading the processed signal to the transmitting antenna of the arrayed transmitting and receiving antenna 1 through the RF switch 3, and switching the working mode of the source distance antenna through the RF switch 3 according to preset requirements to detect strata at different depths.

[0084] As an example, the synchronous signal source 11 generates a (MHz to GHz) signal and sends it to the power amplifier 5 for amplification. One path is sent to the wideband coupler 4 for signal measurement and monitoring, and the other path is loaded to the transmitting antennas T1, T2, ... Tn through the multi-channel RF switch 3 (see Figure 1 ), and the multi-channel RF switch 3 switches the working modes of multiple source-range antennas to detect strata at different depths.

[0085] Embodiment 3

[0086] This embodiment discloses a method for determining the dielectric constant and resistivity of a formation, which can be applied to the logging instrument circuit device for measuring the dielectric constant and resistivity disclosed in the above embodiments.

[0087] Furthermore, based on the first embodiment, the method disclosed in this embodiment is further explained and illustrated by way of example. Figure 3 As shown, the method disclosed in this embodiment includes the following steps:

[0088] Step 310: digitally convert the broadband transmission signal coupled by the broadband coupler 4 through the analog-to-digital converter A / D9 to obtain a first digitized signal, and determine the absolute phase and amplitude of the first digitized signal through the signal processor 10;

[0089] Step 320: simultaneously digitally convert the reflected signal of the arrayed transmitting and receiving antenna 1 coupled by the wideband coupler 4 to obtain a second digitized signal, and determine the absolute phase and amplitude of the second digitized signal through the signal processor 10;

[0090] Step 330: Calibrate the high-frequency array logging system according to the absolute phase and amplitude of the first digitized signal and the absolute phase and amplitude of the second digitized signal to determine the dielectric constant and resistivity curves of formations at different depths.

[0091] As an example, the wideband coupler 4 couples a part of the transmission signal to monitor the transmission signal, sends it to the receiving channel, and after being amplified 6, mixed 7, intermediate frequency amplifier 8 and digitized by analog-to-digital converter A / D9, it is sent to the signal processor 10 to solve the absolute phase and amplitude of the transmission signal; at the same time, the coupler 4 couples multiple transmission antennas T1, T2, ... Tn (see Figure 1 ) is digitized by the low noise amplifier 6, mixer 7, intermediate frequency amplifier 8, and analog-to-digital converter A / D9 of the receiving channel, and then sent to the signal processor 10 to solve the absolute phase and amplitude of the reflected signal for the calibration of the high-frequency array logging system.

[0092] Furthermore, the broadband (MHz to GHz) electromagnetic waves are attenuated by the stratum and reach the array receiving antennas R1, R2, ... Rn (see Figure 1 ), after the receiving antenna receives the weak high-frequency signal attenuated from the formation, it passes through the low-noise amplifier 6, the mixer 7, the intermediate frequency amplifier 8 and is digitized by the analog-to-digital converter A / D9, and then sent to the signal processor 10 to solve the absolute phase and amplitude of the receiving signal of each receiving channel. The absolute phase and amplitude values ​​of the signals of multiple transmitting-receiving channels can be processed to obtain the resistivity curves of formations at different depths.

[0093] Embodiment 4

[0094] This embodiment provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method steps in the aforementioned method embodiment 2 or embodiment 3 can be implemented, and this embodiment will not be repeated here.

[0095] Among them, the computer-readable storage medium may also include computer programs, data files, data structures, etc. alone, or include a combination thereof. The computer-readable storage medium or computer program may be specifically designed and understood by a technician in the field of computer software, or the computer-readable storage medium may be known and available to a technician in the field of computer software. Examples of computer-readable storage media include: magnetic media, such as hard disks, floppy disks, and tapes; optical media, such as CDROM disks and DVDs; magneto-optical media, such as optical disks; and hardware devices, specifically configured to store and execute computer programs, such as read-only memory (ROM), random access memory (RAM), flash memory; or servers, app application stores, etc. Examples of computer programs include machine code (e.g., code generated by a compiler) and files containing high-level code, which can be executed by a computer using an interpreter. The described hardware device may be configured to be used as one or more software modules to perform the operations and methods described above, and vice versa. In addition, the computer-readable storage medium may be distributed in a networked computer system, and program code or computer programs may be stored and executed in a decentralized manner.

[0096] Embodiment 5

[0097] This embodiment provides a computer program product. The computer program product includes a computer program or instructions, and when the computer program or instructions are executed by a processor, all or part of the steps of the method in the above-mentioned method embodiment 2 or embodiment 3 are implemented, and this embodiment will not be repeated here.

[0098] Further, the computer program product may include one or more computer executable components configured to perform the embodiments when the program is run; the computer program product may also include a computer program tangibly contained on a readable medium, the computer program including program code for performing any method in the embodiments of the present disclosure. In such an embodiment, the computer program may be downloaded and installed from a network through a communication portion, and / or installed from a removable medium.

[0099] Embodiment 6

[0100] This embodiment provides an electronic device, which may include: one or more processors, a memory, a multimedia component, an input / output (I / O) interface, and a communication component.

[0101] One or more processors are used to execute all or part of the steps in the above method embodiments. The memory is used to store various types of data, which may include instructions of any application or method in the electronic device, and data related to the application.

[0102] One or more processors may be an application specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a controller, a microcontroller, a microprocessor or other electronic components, and are used to execute the method in the aforementioned method embodiment 2 or embodiment 3.

[0103] The memory can be implemented by any type of volatile or non-volatile storage device or a combination of them, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk or optical disk.

[0104] The multimedia component may include a screen and an audio component, the screen may be a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone, and the microphone is used to receive external audio signals. The received audio signal may be further stored in a memory or sent via a communication component. The audio component also includes at least one speaker for outputting audio signals.

[0105] The I / O interface provides an interface between one or more processors and other interface modules, which may be a keyboard, a mouse, buttons, etc. These buttons may be virtual buttons or physical buttons.

[0106] The communication component is used for wired or wireless communication between the electronic device and other devices. Wired communication includes communication through network ports, serial ports, etc.; wireless communication includes: Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, 5G, or one or a combination of them.

[0107] In summary, the present application provides a well logging instrument circuit device for measuring dielectric constant and resistivity, a method for detecting dielectric constant and resistivity of formations, determination of dielectric constant and resistivity of formations, storage medium and electronic equipment. An innovative circuit system with wide-band (MHz to GHz) high frequency applied to petroleum well logging instruments is designed, and a multi-frequency working mode is adopted to realize the measurement of dielectric constant and resistivity of oil-based mud high-resistance formations; an innovative method is proposed to synchronously measure the absolute phase and amplitude value of the transmitting and receiving channel signals, and the measurement information of the well logging instrument circuit is increased without reducing the signal strength, so as to realize the detection of deep formations by the well logging instrument; a wide-band (MHz to GHz) working mode is adopted to realize the measurement of formations at different depths by the instrument, and an array dielectric constant curve is obtained, which has the advantages of deep detection, high resolution and rich information; the circuit calibration can be carried out in real time, and the quality of the instrument measurement curve can be monitored in real time, thereby improving the measurement accuracy of the instrument.

[0108] In addition, it should be understood that the method or device disclosed in the embodiments provided in the present application can also be implemented in other ways. The method or device embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the methods and devices according to the multiple embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a module, a computer program segment or a part of a computer program, and the module, computer program segment or a part of a computer program contains one or more computer programs for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings, and can actually be executed in parallel. They can also be executed in the opposite order sometimes, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart can be implemented with a dedicated hardware-based system that performs the specified function or action, or can be implemented with a combination of dedicated hardware and computer programs.

[0109] In this application, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements that are inherent to such process, method, article, or apparatus. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, device or equipment including the elements; if there is a description of "first", "second", etc., it is only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features; in the description of this application, unless otherwise specified, the terms "multiple" and "multiple" mean at least two; if there is a description of a server, it should be noted that the server can be an independent physical server or terminal, or a server cluster composed of multiple physical servers, or a cloud server that can provide basic cloud computing services such as cloud servers, cloud databases, cloud storage and CDN; if there is a description of a smart terminal or mobile device in this application, it should be noted that the smart terminal or mobile device can be a mobile phone, a tablet computer, a smart watch, a netbook, a wearable electronic device, a personal digital assistant (PDA), an augmented reality technology device (AR), a virtual reality device (VR), a smart TV, a smart speaker, a personal computer (PC), a tablet computer, a smart phone, a smart TV, a smart speaker, a smart phone ... Computer, referred to as PC), etc., but not limited to this, the present application does not specifically limit the specific form of the smart terminal or mobile device.

[0110] Finally, it should be noted that, in the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "an example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0111] Although the embodiments of the present application have been shown and described above, it is to be understood that the above embodiments are exemplary, and the contents described are only embodiments adopted for the convenience of understanding the present application, and are not intended to limit the present application. Any technician in the technical field to which the present application 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 application, but the scope of protection of the present application shall still be subject to the scope defined in the attached claims.

Claims

1. A well logging instrument circuit device for measuring dielectric constant and resistivity, It is characterized in that include: An arrayed transmitting and receiving antenna (1) is used to generate a broadband electromagnetic field and combine the electromagnetic field responses of formations with different transmitting-receiving source distances to measure formation information at multiple depths; A wideband impedance matching module (2) is electrically connected to the arrayed transmitting and receiving antenna (1) and is used to match the impedance of the transmitting and receiving circuit ports to achieve maximum power transmission and improve the receiving sensitivity of small signals; A wideband coupler (4) is electrically connected to a power amplifier (5) and is used to couple a wideband transmission signal and monitor the transmission signal, and measure the absolute phase and amplitude of the transmission signal; and to couple the reflected signal of the arrayed transmission and receiving antenna (1) and measure the phase and amplitude of the reflected signal for instrument calibration; A power amplifier (5) for amplifying the power of a broadband signal; an analog-to-digital converter A / D (9), used for conversion between analog signals and digital signals, and synchronous sampling of multi-channel received signals; A signal processor (10) is electrically connected to the analog-to-digital converter A / D (9) and is used to control the arrayed transmitting and receiving antennas (1) to detect strata at different depths; and to control the analog-to-digital converter A / D (9) to perform synchronous sampling of multi-channel received signals; and processing the digital signal to obtain the absolute phase and amplitude of each receiving channel signal; The synchronous signal source (11) is electrically connected to the power amplifier (5) and the analog-to-digital converter A / D (9) respectively, and is used to output three synchronous signals, namely, a broadband signal, a local oscillator signal and a synchronous acquisition main clock signal.

2. The logging instrument circuit device for measuring dielectric constant and resistivity according to claim 1, It is characterized in that Also includes: The intermediate frequency amplifier (8) is used to amplify the signal down-converted to a low frequency; wherein the signal processor is also used to control the intermediate frequency amplifier (8) to adjust the gain of the receiving channel to expand the dynamic range of receiving weak signals.

3. The logging instrument circuit device for measuring dielectric constant and resistivity according to claim 1, It is characterized in that Also includes: The low noise amplifier (6) is used to amplify the received weak signal to improve the measurement sensitivity.

4. The logging instrument circuit device for measuring dielectric constant and resistivity according to claim 1, It is characterized in that Also includes: The mixer (7) is used to convert the received wide-band high-frequency signal into a low-frequency signal.

5. The logging instrument circuit device for measuring dielectric constant and resistivity according to claim 1, It is characterized in that The broadband signal is used as a transmitting signal; the local oscillator signal is used to mix with the transmitting signal to convert the broadband transmitting signal down to a low frequency for analog digitization and other processing; the synchronous acquisition master clock signal is used as the acquisition master clock signal of the analog-to-digital converter A / D (9).

6. The logging instrument circuit device for measuring dielectric constant and resistivity according to claim 1, It is characterized in that Also includes: The radio frequency switch (3) is electrically connected to the broadband coupler (4) and the broadband impedance matching module (2) respectively, and is used to switch the transmitting antennas with different source distances in the arrayed transmitting and receiving antennas (1) to perform stratum detection at different depths.

7. A method for detecting dielectric constant and resistivity of formations. Features The method is implemented based on the well logging instrument circuit device for measuring dielectric constant and resistivity according to any one of claims 1 to 6, and comprises: Processing the signal generated by the synchronization signal source (11) through a power amplifier (5) to obtain a processed signal; The processed signal is sent to a wideband coupler (4) for signal measurement and monitoring; the processed signal is loaded into a transmitting antenna of an arrayed transmitting and receiving antenna (1) through a radio frequency switch (3), and the working mode of the source distance antenna is switched through the radio frequency switch (3) according to preset requirements to detect strata at different depths.

8. A method for determining the dielectric constant and resistivity of a formation. It is characterized in that The method is implemented based on the well logging instrument circuit device for measuring dielectric constant and resistivity according to any one of claims 1 to 7, and comprises: The broadband transmission signal coupled by the broadband coupler (4) is digitally converted by an analog-to-digital converter (A / D) (9) to obtain a first digital signal, and the absolute phase and amplitude of the first digital signal are determined by a signal processor (10); Simultaneously, the reflected signal of the arrayed transmitting and receiving antenna (1) coupled by the wideband coupler (4) is digitally converted to obtain a second digital signal, and the absolute phase and amplitude of the second digital signal are determined by a signal processor (10); The high-frequency array logging system is calibrated according to the absolute phase and amplitude of the first digitized signal and the absolute phase and amplitude of the second digitized signal to determine the dielectric constant and resistivity curves of formations at different depths.

9. A computer-readable storage medium, It is characterized in that The computer program stored in the computer-readable storage medium, when executed by one or more processors, implements the method for detecting the dielectric constant and resistivity of the formation as described in any one of claims 7 or 8.

10. An electronic device, It is characterized in that It comprises a memory and a processor, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the method for detecting the dielectric constant and resistivity of the formation as described in any one of claims 7 or 8 is implemented.

Images