Method and device for transmitting underground boundary measurement data of while-drilling azimuth electromagnetic wave resistivity logging instrument

Abstract

The invention discloses an underground boundary measurement data transmission method and device of a while-drilling azimuth electromagnetic wave resistivity logging instrument. The underground boundary measurement data transmission method of the while-drilling azimuth electromagnetic wave resistivity logging instrument comprises the following steps: acquiring electromagnetic wave boundary measurement signal numerical values corresponding to sector numbers; according to the electromagnetic wave boundary measurement signal numerical value corresponding to each sector number, acquiring the acquisition signal information of each sector without the direct current offset; acquiring an in-phase demodulation quantity I and an orthogonal demodulation quantity Q according to the acquisition signal information of each sector without the direct current offset; and according to the in-phase demodulation amount I and the orthogonal demodulation amount Q, obtaining the amplitude of the collected signal of each sector and the sector number of the sector where the maximum value is located. According to the invention, the signal receiving model of the azimuth antenna of the while-drilling azimuth electromagnetic wave resistivity logging instrument is simplified, and the characteristic quantity extraction of the antenna receiving signal is facilitated; according to the method, the well-ground transmission data volume (16 groups of amplitude and phase data are converted into 1 group of amplitude and sector number) is effectively reduced in a mode of extracting the characteristic quantity, and an original signal can be recovered on the ground.

Description

Technical Field

[0001] This application relates to the technical field of downhole data transmission, and particularly to a method for transmitting downhole boundary measurement data of a logging-while-drilling azimuth electromagnetic resistivity logging tool and a device for transmitting downhole boundary measurement data of a logging-while-drilling azimuth electromagnetic resistivity logging tool. Background Art

[0002] As an important energy source for the global economy, petroleum plays an irreplaceable role in various fields. Exploration and development of petroleum resources are the premise for ensuring sufficient energy supply. In this process, the development of logging technology has become an important means of exploration and development. Through logging technology, the structure, properties, and oil and gas storage conditions of underground rock formations can be accurately detected, providing a scientific basis for the effective development of oilfields. As the core tool of logging technology, logging tools play a crucial role. It comprehensively collects underground data through various measurement methods, such as resistivity, acoustic waves, gamma rays, etc., not only improving the accuracy of exploration but also optimizing the decision-making for oil and gas production. With the progress of technology, modern logging tools have higher accuracy, stronger data processing capabilities, and stronger adaptability, becoming an important force in promoting the advancement of oil exploration and development into deeper and farther areas.

[0003] As the core tool in the process of geosteering, the logging-while-drilling azimuth electromagnetic resistivity tool has added transmitting / receiving coils with horizontal or inclined structures compared with conventional resistivity tools, enabling it to not only measure the resistivity of the formation where the tool is located during drilling but also have the ability to detect the boundary azimuth and distance. To accurately complete the geosteering function, the logging-while-drilling azimuth electromagnetic resistivity tool needs to transmit measurement data to the ground in real time during downhole drilling. Due to the addition of azimuth receiving antennas, the measurement parameters with azimuth information are also increased. According to the azimuth measurement accuracy of the tool, the tool body can usually be evenly divided into 8 or 16 sectors on average. The increase in the amount of information uploaded poses higher requirements for the transmission rate. At the current mud transmission rate, if all the measurement values corresponding to all sectors are uploaded one by one, it will affect the normal drilling progress. Therefore, it is necessary to compress the azimuth data to reduce the amount of transmission without losing formation information.

[0004] Since the data obtained from azimuthal electromagnetic wave resistivity measurement contains both sector information and the measured values corresponding to that sector. Usually, all the measured values in the wellbore are recorded in a storage manner. After the instrument comes out of the well, the memory data is read and then analyzed and calculated. Its characteristic is that it can obtain complete measurement data, but the timeliness is poor and it cannot reflect the formation data in real time during the instrument drilling process; Yang Zhen et al. mentioned in the patent "Coding Method and Device for Azimuthal Electromagnetic Wave Boundary Detection Signal While Drilling" that the effective directional electromotive force signal can be respectively subjected to sine fitting and cosine fitting, the characteristics of the directional electromotive force signal are extracted, and the first fitting coefficient and the second fitting coefficient are obtained; that is, the curve fitting method is used to process the data. However, the curve fitting algorithm requires steps such as model selection, parameter estimation, and fitting evaluation, with a large amount of data calculation and poor real-time performance; moreover, the algorithm is easily interfered by the noise of the original data, resulting in non-convergence of the calculation result and thus unable to obtain accurate results. Summary of the Invention

[0005] The purpose of the present invention is to provide a downhole boundary measurement data transmission method for an azimuthal electromagnetic wave resistivity logging while drilling instrument to at least solve one of the above technical problems.

[0006] The present invention provides the following solutions:

[0007] According to one aspect of the present invention, there is provided a downhole boundary measurement data transmission method for an azimuthal electromagnetic wave resistivity logging while drilling instrument, and the downhole boundary measurement data transmission method for the azimuthal electromagnetic wave resistivity logging while drilling instrument includes:

[0008] Obtain the electromagnetic wave measurement signal values corresponding to each sector number;

[0009] Obtain the acquisition signal information of each sector with the DC offset removed according to the electromagnetic wave measurement signal values corresponding to each sector number;

[0010] Obtain the in-phase demodulation quantity I and the quadrature demodulation quantity Q according to the acquisition signal information of each sector with the DC offset removed;

[0011] Obtain the amplitude of the acquisition signal of each sector and the sector number of the sector where the maximum value is located according to the in-phase demodulation quantity I and the quadrature demodulation quantity Q.

[0012] Optionally, the obtaining the electromagnetic wave measurement signal values corresponding to each sector number includes:

[0013] Obtain in real time the electromagnetic wave signal reflected by the formation interface and its corresponding sector;

[0014] Divide the circumferential 360° area into 16 sectors, and obtain the electromagnetic wave measurement signals of the 16 sectors and their corresponding sector numbers obtained when the instrument rotates uniformly for one week.

[0015] Optionally, obtaining the acquisition signal information of each sector with the DC offset removed according to the electromagnetic wave measurement signal values corresponding to each sector number includes:

[0016] Taking the average of the electromagnetic wave measurement signal values corresponding to each sector number to obtain the average value of the electromagnetic wave measurement signal;

[0017] Subtracting the average value of the electromagnetic wave measurement signal from the electromagnetic wave measurement signal value corresponding to each sector number respectively to obtain the acquisition signal information of each sector with the DC offset removed.

[0018] Optionally, the in-phase demodulation quantity I is obtained according to the acquisition signal information of each sector with the DC offset removed through the following formula:

[0019] where,

[0020] I is the in-phase demodulation quantity, A0 is the amplitude of the sector acquisition signal, n is the sector number, and π is the pi.

[0021] Optionally, the quadrature demodulation quantity Q is obtained according to the acquisition signal information of each sector with the DC offset removed through the following formula:

[0022] where,

[0023] Q is the quadrature demodulation quantity, A0 is the amplitude of the sector acquisition signal, n is the sector number, and π is the pi.

[0024] Optionally, obtaining the amplitude of the acquisition signal of each sector and the sector number of the sector where the maximum value is located according to the in-phase demodulation quantity I and the quadrature demodulation quantity Q includes:

[0025] Obtaining the amplitude of the acquisition signal of each sector according to the in-phase demodulation quantity I and the quadrature demodulation quantity Q;

[0026] Obtaining the phase where the maximum value is located according to the in-phase demodulation quantity I and the quadrature demodulation quantity Q;

[0027] Obtaining the sector number of the sector where the maximum value is located according to the phase where the maximum value is located.

[0028] Optionally, the amplitude of the acquisition signal of each sector is obtained according to the in-phase demodulation quantity I and the quadrature demodulation quantity Q through the following formula:

[0029] where,

[0030] A0 is the amplitude of the sector acquisition signal, Q is the quadrature demodulation quantity, and I is the in-phase demodulation quantity.

[0031] Optionally, the phase where the maximum value is located is obtained according to the in-phase demodulation quantity I and the quadrature demodulation quantity Q through the following formula:

[0032] where

[0033] θ0 is the phase where the maximum value is located, Q is the quadrature demodulation quantity, and I is the in-phase demodulation quantity.

[0034] Optionally, the sector number of the sector where the maximum value is located is obtained according to the phase where the maximum value is located through the following formula:

[0035] where

[0036] S0 is the sector number of the sector where the maximum value is located, and θ0 is the phase where the maximum value is located.

[0037] The present application also provides a downhole boundary measurement data transmission device for a logging-while-drilling azimuth electromagnetic wave resistivity logging tool. The downhole boundary measurement data transmission device for the logging-while-drilling azimuth electromagnetic wave resistivity logging tool includes:

[0038] An electromagnetic wave measurement signal value acquisition module, which is used to acquire the electromagnetic wave measurement signal values corresponding to each sector number;

[0039] An acquisition signal information acquisition module for removing the DC offset, which is used to acquire the acquisition signal information of each sector with the DC offset removed according to the electromagnetic wave measurement signal values corresponding to each sector number;

[0040] An in-phase component and quadrature component acquisition module, which is used to acquire the in-phase demodulation quantity I and the quadrature demodulation quantity Q according to the acquisition signal information of each sector with the DC offset removed;

[0041] An amplitude and sector number acquisition module of the sector where the maximum value is located, which is used to acquire the amplitude of the acquisition signal of each sector and the sector number of the sector where the maximum value is located according to the in-phase demodulation quantity I and the quadrature demodulation quantity Q.

[0042] The downhole boundary measurement data transmission method of the logging-while-drilling azimuth electromagnetic wave resistivity logging tool of the present application simplifies the signal reception model of the azimuth antenna of the resistivity instrument, facilitating the extraction of the characteristic quantities of the antenna-received signals; by extracting the characteristic quantities, this method effectively reduces the well-to-surface transmission data volume (converting from 16 groups of amplitude and phase data to 1 group of amplitude quantity and sector number), and can restore the original signal on the ground. Moreover, the more sectors are divided, the higher the calculated accuracy. Description of the Drawings

[0043] Figure 1 It is a schematic flow chart of the downhole boundary measurement data transmission method of the azimuth electromagnetic wave resistivity logging while drilling tool in an embodiment of the present application.

[0044] Figure 2 It is a schematic diagram of the principle of the azimuth electromagnetic wave resistivity instrument for detecting the wellbore edge in the present application.

[0045] Figure 3 It is a schematic diagram of the azimuth receiving antenna changing with the tool face angle in the present application.

[0046] Figure 4 It is a schematic diagram of the antenna distribution of the azimuth wave logging while drilling device in the present application. Specific embodiments

[0047] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0048] As Figure 1 shown, the downhole boundary measurement data transmission method of the azimuth electromagnetic wave resistivity logging while drilling tool includes:

[0049] Step 1: Obtain the electromagnetic wave measurement signal values corresponding to each sector number;

[0050] Step 2: Obtain the acquisition signal information of each sector without DC offset according to the electromagnetic wave measurement signal values corresponding to each sector number;

[0051] Step 3: Obtain the in-phase demodulation quantity I and the quadrature demodulation quantity Q according to the acquisition signal information of each sector without DC offset;

[0052] Step 4: Obtain the amplitude of the acquisition signal of each sector and the sector number of the sector where the maximum value is located according to the in-phase demodulation quantity I and the quadrature demodulation quantity Q.

[0053] The downhole boundary measurement data transmission method of the azimuth electromagnetic wave resistivity logging while drilling tool in the present application simplifies the signal reception model of the azimuth antenna of the resistivity instrument, which is convenient for extracting the characteristic quantities of the antenna received signals; this method effectively reduces the well-to-surface transmission data volume (from 16 groups of amplitude and phase data to 1 group of amplitude quantity and sector number) by extracting characteristic quantities, and can restore the original signal on the ground. Moreover, the more sectors are divided, the higher the calculated accuracy.

[0054] In this embodiment, the obtaining of the electromagnetic wave measurement signal values corresponding to each sector number includes:

[0055] Obtain the electromagnetic wave signals reflected by the formation interface in real time and their corresponding azimuths;

[0056] Divide the circumferential 360° area into 16 sectors, and obtain the electromagnetic wave measurement signals of the 16 sectors and their corresponding sector numbers obtained when the instrument rotates uniformly for one week.

[0057] In this embodiment, the obtaining of the acquisition signal information of each sector with the DC offset removed according to the electromagnetic wave measurement signal values corresponding to each sector number includes:

[0058] Average the electromagnetic wave measurement signal values corresponding to each sector number to obtain the average value of the electromagnetic wave measurement signals;

[0059] Subtract the average value of the electromagnetic wave measurement signals from the electromagnetic wave measurement signal value corresponding to each sector number respectively to obtain the acquisition signal information of each sector with the DC offset removed.

[0060] In this embodiment, the in-phase demodulation quantity I is obtained according to the acquisition signal information of each sector with the DC offset removed through the following formula:

[0061] Wherein,

[0062] I is the in-phase demodulation quantity, A0 is the amplitude of the sector acquisition signal, n is the sector number, and π is the pi.

[0063] In this embodiment, the quadrature demodulation quantity Q is obtained according to the acquisition signal information of each sector with the DC offset removed through the following formula:

[0064] Wherein,

[0065] Q is the quadrature demodulation quantity, A0 is the amplitude of the sector acquisition signal, n is the sector number, and π is the pi.

[0066] In this embodiment, the obtaining of the amplitude of the acquisition signal of each sector and the sector number of the sector where the maximum value is located according to the in-phase demodulation quantity I and the quadrature demodulation quantity Q includes:

[0067] Obtain the amplitude of the acquisition signal of each sector according to the in-phase demodulation quantity I and the quadrature demodulation quantity Q;

[0068] Obtain the phase where the maximum value is located according to the in-phase demodulation quantity I and the quadrature demodulation quantity Q;

[0069] Obtain the sector number of the sector where the maximum value is located according to the phase where the maximum value is located.

[0070] In this embodiment, the amplitude of the acquisition signal of each sector is obtained according to the in-phase demodulation quantity I and the quadrature demodulation quantity Q through the following formula:

[0071] Among them,

[0072] A0 is the amplitude of the sector acquisition signal, Q is the quadrature demodulation quantity, and I is the in-phase demodulation quantity.

[0073] In this embodiment, the phase where the maximum value is located is obtained according to the in-phase demodulation quantity I and the quadrature demodulation quantity Q through the following formula:

[0074] Among them,

[0075] θ0 is the phase where the maximum value is located, Q is the quadrature demodulation quantity, and I is the in-phase demodulation quantity.

[0076] In this embodiment, the sector number of the sector where the maximum value is located is obtained according to the phase where the maximum value is located through the following formula:

[0077] Among them,

[0078] S 0 is the sector number of the sector where the maximum value is located, and θ0 is the phase where the maximum value is located.

[0079] The derivation process of the above formula of the present application is introduced in detail below to explain the technical principle of the present application.

[0080] Refer to Figure 4 , the electromagnetic wave resistivity logging-while-drilling device consists of multiple transmitting coils and receiving coils. Among them, the transmitting coil winds the coil along the axis, and the direction of the magnetic induction line is parallel to the axis direction; the azimuth receiving coil winds the coil along the direction perpendicular to the axis, and the direction of the magnetic induction line is perpendicular to the axis direction. When the electromagnetic wave signal emitted by the transmitting axial coil encounters the formation boundary, the reflected signal will be received by the azimuth receiving coil, and its measurement principle is as Figure 2 shown. During the drilling process, the instrument rotates. The emission signal of the axial coil is not affected, while the received signal of the azimuth receiving coil will change according to the change of the tool face angle of the instrument. The change schematic diagram is as Figure 3 shown.

[0081] When the azimuth coil is facing the formation, the effective receiving area of the coil is the largest. Assuming that when the tool face angle of the instrument is θ0, there is the maximum signal intensity. When it rotates through a certain angle θ, considering that the effective receiving area of the coil becomes cos(θ - θ0) times of the original, the relationship between the signal intensity of the instrument and the tool face angle is

[0082] A = A0cos(θ - θ0) (1)

[0083] In the above formula, A0 is the azimuth signal of the maximum signal intensity, and θ0 is the tool face angle at the maximum signal intensity.

[0084] Considering factors such as instrument manufacturing process and environmental noise, the transmitting antenna may generate a direct coupling signal in the azimuth receiving coil. Therefore, the above formula can be modified as follows:

[0085] A = A0cos(θ - θ0) + E (2)

[0086] In the above formula, E is the direct coupling signal caused by reasons such as manufacturing process, and here E is independent of θ. Sampling the A signal at equal intervals in N sectors, the sampling interval is The sampling frequency is The collected signal can be expressed as:

[0087]

[0088] Perform cross-correlation operation on the signal A(n) and the reference signal The operation result is:

[0089]

[0090] Where it is assumed that Perform modulus processing on R As (0), then the following can be obtained:

[0091]

[0092] Perform inverse trigonometric function operation on it, then the following can be obtained:

[0093]

[0094] According to the above formula derivation, the following conclusion can be drawn: The collected azimuth measurement signals are respectively inner product with the sine and cosine signals of the same frequency. After obtaining I and Q, the amplitude and initial phase of the collected azimuth signal are obtained according to formulas (6) and (7). According to the amplitude and phase information, the collected azimuth measurement signal can be restored. Therefore, only two parameters, namely the amplitude A0 and the initial phase θ0, need to be uploaded to reproduce the downhole azimuth measurement signal in the ground system, so as to perform further formation inversion calculation.

[0095] The following further elaborates on the present application by way of examples. It can be understood that the examples do not constitute any limitation to the present application.

[0096] When the azimuthal electromagnetic wave resistivity tool works downhole, the transmitting coils T1 - T4 send electromagnetic wave signals in turn. R3 and R4 are azimuth receiving coils, which can obtain the electromagnetic wave signals reflected by the formation interface and their corresponding azimuths in real time. The tool divides the 360° circumferential area into 16 sectors. When the tool rotates one week at a constant speed, it can obtain the electromagnetic wave measurement signals of 16 sectors S1 - S16 (S represents the sector) and their corresponding sector numbers. To improve the real-time transmission of formation information data, the following steps are used to process the azimuth measurement data:

[0097] (1) Record the numerical values of the electromagnetic wave measurement signals corresponding to each sector number, and judge whether the number of sectors reaches 16. If it is less than 16, continue to record; if it is equal to 16, proceed to step (2);

[0098] (2) Calculate the average value of the acquired signals A(n) of the 16 sectors, and subtract this average value from the signal numerical values of each sector to obtain the acquired signal A0(n) after removing the DC offset;

[0099] (3) According to formula (4), multiply the acquired signal numerical values in (2) respectively with (0 ≤ n < 16) one by one, and then sum them up. The calculation formula is as follows:

[0100]

[0101] According to formulas (8) and (9), after determining the number of sector divisions, and (n = 1, 2, 3..16) The calculated numerical values can be stored in the memory table and obtained by looking up the table, thereby reducing the operation time and improving the operation efficiency of the algorithm.

[0102] (4) According to the I and Q values obtained in (3), substitute them into formulas (6) and (7), and then the amplitude A0 of the acquired signals of 16 sectors and the phase θ0 where the maximum value is located can be obtained. Calculate the sector number S0 of the sector according to formula (10):

[0103]

[0104] (5) Transmit the amplitude A0 and the sector number S0 of the sector where the maximum value is located to the surface decoding system. According to these two parameters, the electromagnetic wave data measurement numerical values of 16 sectors downhole can be reproduced, and further formation inversion calculation can be carried out.

[0105] The present application also provides a downhole boundary measurement data transmission device for a while-drilling azimuth electromagnetic wave resistivity logging tool. The downhole boundary measurement data transmission device for the while-drilling azimuth electromagnetic wave resistivity logging tool includes an electromagnetic wave measurement signal value acquisition module, an acquisition signal information acquisition module for removing the DC offset, an in-phase component and quadrature component acquisition module, and a sector number acquisition module for the amplitude and the sector number of the maximum value. Among them,

[0106] The electromagnetic wave measurement signal value acquisition module is used to acquire the electromagnetic wave measurement signal values corresponding to each sector number;

[0107] The acquisition signal information acquisition module for removing the DC offset is used to acquire the acquisition signal information for removing the DC offset of each sector according to the electromagnetic wave measurement signal values corresponding to each sector number;

[0108] The in-phase demodulation quantity and quadrature demodulation quantity acquisition module is used to acquire the in-phase demodulation quantity I and the quadrature demodulation quantity Q according to the acquisition signal information for removing the DC offset of each sector;

[0109] The sector number acquisition module for the amplitude and the sector number of the maximum value is used to acquire the amplitude of the acquisition signal of each sector and the sector number of the sector where the maximum value is located according to the in-phase demodulation quantity I and the quadrature demodulation quantity Q

[0110] It should be noted that the foregoing explanations of the method embodiments are also applicable to the system of this embodiment, and will not be repeated here.

[0111] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for transmitting downhole boundary measurement data of an azimuthal electromagnetic resistivity logging-while-drilling tool, characterized in that The downhole boundary measurement data transmission method for the azimuthal electromagnetic wave resistivity logging-while-drilling tool includes: Obtaining the electromagnetic wave resistivity measurement signal values corresponding to each sector number; Obtaining the acquisition signal information of each sector with the DC offset removed based on the electromagnetic wave resistivity measurement signal values corresponding to each sector number; Obtaining the in-phase demodulation quantity I and the quadrature demodulation quantity Q based on the acquisition signal information of each sector with the DC offset removed; Obtaining the amplitude of the acquisition signal of each sector and the sector number of the sector where the maximum value is located based on the in-phase demodulation quantity I and the quadrature demodulation quantity Q.

2. The downhole boundary measurement data transmission method of the azimuthal electromagnetic wave resistivity logging while drilling tool according to claim 1, characterized in that The obtaining of the electromagnetic wave measurement signal values corresponding to each sector number includes: Obtaining in real time the electromagnetic wave signals reflected by the formation interface and their corresponding sectors; Dividing the circumferential 360° region into 16 sectors, and obtaining the electromagnetic wave measurement signals and their corresponding sector numbers of the 16 sectors obtained when the tool rotates uniformly for one week.

3. The downhole boundary measurement data transmission method for the azimuthal electromagnetic wave resistivity logging while drilling tool according to claim 2, wherein The obtaining of the acquisition signal information of each sector with the DC offset removed based on the electromagnetic wave measurement signal values corresponding to each sector number includes: Averaging the electromagnetic wave measurement signal values corresponding to each sector number to obtain the average value of the electromagnetic wave measurement signal; Subtracting the average value of the electromagnetic wave measurement signal from the electromagnetic wave measurement signal value corresponding to each sector number respectively to obtain the acquisition signal information of each sector with the DC offset removed.

4. The method for transmitting downhole boundary measurement data of the azimuthal electromagnetic wave resistivity logging while drilling tool according to claim 3, wherein, The in-phase demodulation quantity I is obtained based on the acquisition signal information of each sector with the DC offset removed through the following formula: Among them, I is the in-phase demodulation quantity, A0 is the amplitude of the sector acquisition signal, n is the sector number, and π is the pi.

5. The downhole boundary measurement data transmission method of the azimuthal electromagnetic wave resistivity logging while drilling tool according to claim 4, characterized in that, The quadrature demodulation quantity Q is obtained based on the acquisition signal information of each sector with the DC offset removed through the following formula: Among them, Q is the quadrature demodulation quantity, A0 is the amplitude of the sector acquisition signal, n is the sector number, and π is the pi.

6. The downhole boundary measurement data transmission method of the azimuthal electromagnetic wave resistivity logging while drilling tool according to claim 5, characterized in that, The obtaining of the amplitude of the acquisition signal and the sector number of the sector where the maximum value is located based on the in-phase demodulation quantity I and the quadrature demodulation quantity Q includes: Obtaining the amplitude of the acquisition signal of each sector based on the in-phase demodulation quantity I and the quadrature demodulation quantity Q; Obtaining the phase where the maximum value is located based on the in-phase demodulation quantity I and the quadrature demodulation quantity Q; Obtaining the sector number of the sector where the maximum value is located based on the phase where the maximum value is located.

7. The method for transmitting downhole boundary measurement data of the azimuthal electromagnetic wave resistivity logging while drilling tool according to claim 6, wherein The amplitude of the acquisition signal of each sector is obtained based on the in-phase demodulation quantity I and the quadrature demodulation quantity Q through the following formula: Among them, A0 is the amplitude of the sector acquisition signal, Q is the quadrature demodulation quantity, and I is the in-phase demodulation quantity.

8. The method for transmitting the downhole boundary measurement data of the azimuthal electromagnetic wave resistivity logging while drilling instrument according to claim 7, wherein, The phase where the maximum value is located is obtained based on the in-phase demodulation quantity I and the quadrature demodulation quantity Q through the following formula: Among them, θ0 is the phase where the maximum value is located, Q is the quadrature demodulation quantity, and I is the in-phase demodulation quantity.

9. The downhole boundary measurement data transmission method of the azimuthal electromagnetic wave resistivity logging while drilling tool according to claim 8, characterized in that, The sector number of the sector where the maximum value is located is obtained based on the phase where the maximum value is located through the following formula: Among them, S 0 is the sector number of the sector where the maximum value is located, and θ0 is the phase where the maximum value is located.

10. A downhole boundary measurement data transmission device for azimuthal electromagnetic resistivity logging while drilling, characterized in that, The downhole boundary measurement data transmission device for the azimuthal electromagnetic wave resistivity logging-while-drilling tool includes: An electromagnetic wave measurement signal value acquisition module, which is used to acquire the electromagnetic wave measurement signal values corresponding to each sector number; An acquisition signal information obtaining module for removing DC offset, which is used to obtain the acquisition signal information with DC offset removed for each sector according to the electromagnetic wave measurement signal values corresponding to each sector number; An in-phase component and quadrature-phase component obtaining module, which is used to obtain the in-phase demodulation quantity I and the quadrature demodulation quantity Q according to the acquisition signal information with DC offset removed for each sector; A module for obtaining the amplitude and the sector number of the sector where the maximum value is located, which is used to obtain the amplitude of the acquisition signal for each sector and the sector number of the sector where the maximum value is located according to the in-phase demodulation quantity I and the quadrature demodulation quantity Q.

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