Far exploration sound wave migration imaging data three-dimensional well trajectory correction method and related equipment

Abstract

The invention relates to the technical field of oil exploration logging data processing, and discloses a far exploration sound wave migration imaging data three-dimensional well trajectory correction method and related device.The method comprises the steps that horizontal well logging data are collected, coordinates of a well trajectory in space are obtained through calculation according to the horizontal well logging data, and the coordinates of the well trajectory are calculated according to the coordinates; the well track is drawn according to the coordinates of the well track in the space; generating migration imaging data in different directions according to the remote exploration acoustic logging data, and generating a migration imaging picture by using a color code according to the migration imaging data; the migration imaging picture is cut into a plurality of narrow strip pictures in the direction perpendicular to the well axis, all the narrow strip pictures are sequentially drawn into designed grids, migration imaging pictures generated by migration imaging data in different directions are sequentially drawn into a three-dimensional space, and horizontal well three-dimensional well trajectory correction of the migration imaging data is completed. According to the method, the accuracy of depicting the spatial relationship of geological reflectors such as stratum interfaces, faults and cracks near a horizontal well shaft by far-detection sound waves is improved.

Description

Technical Field

[0001] This invention relates to the field of oil exploration well data processing technology, specifically to a method and related equipment for correcting three-dimensional well trajectory of remote sound wave migration imaging data. Background Technology

[0002] By processing the subarray waveforms of long-range acoustic logging, reflected waves are extracted, and finally, migration imaging images in multiple azimuths are generated. Interactive interpretation based on these migration images can determine the location and orientation of reflectors such as fractures or cavities within a radial distance of tens of meters outside the well, providing a basis for oil and gas exploration and development.

[0003] Existing technologies generate migration images that assume the wellbore is a straight line, using the wellbore as a baseline to calculate migration data at a certain radial depth. In horizontal wells, the well trajectory undulates vertically and horizontally, no longer forming a straight line. In the generated migration images, the acoustic phase axis reflecting reflectors such as formation interfaces no longer reflects the shape of the reflectors, becoming similar to spurious signals, making them indistinguishable.

[0004] Existing offset imaging well trajectory correction techniques involve projecting the 3D well trajectory of a horizontal well onto a 2D profile, and then drawing an offset imaging image at a specific angle along the projected trajectory. This method corrects the well trajectory of the offset imaging image at that angle. This approach is suitable for offset imaging correction of simple, straight horizontal well trajectories. Figure 2 As shown, Figure 2 The middle line represents the wellbore, and the arrow indicates the acoustic phase axis. The phase axes above and below the well trajectory have very similar shapes, both exhibiting an arc shape. Figure 2 It is impossible to distinguish between formation interfaces and false signals; therefore, for slightly more complex horizontal well trajectories, problems such as offset imaging correction distortion and image overlap will occur, making it impossible to effectively identify reflectors and accurately calculate quantitative parameters such as reflector length and dip angle. Summary of the Invention

[0005] The purpose of this invention is to provide a method and related equipment for correcting three-dimensional well trajectory of remote sound wave migration imaging data, so as to solve the technical problem of how to perform three-dimensional well trajectory correction of remote sound wave reflection signals under complex horizontal well trajectory conditions.

[0006] This invention is achieved through the following technical solution:

[0007] In a first aspect, the present invention provides a method for correcting three-dimensional well trajectory of remote acoustic migration imaging data, comprising:

[0008] Collect horizontal well logging data, calculate the spatial coordinates of the wellbore trajectory based on the horizontal well logging data, and draw the wellbore trajectory based on the spatial coordinates of the wellbore trajectory;

[0009] Based on the remote sounding logging data, offset imaging data in different orientations is generated, and offset imaging images are generated using color marks based on the offset imaging data;

[0010] The offset imaging image is divided into multiple narrow strip images along the vertical well axis. Each narrow strip image is then drawn sequentially into the designed grid. The offset imaging images generated from offset imaging data in different orientations are then drawn sequentially into three-dimensional space to complete the horizontal well three-dimensional well trajectory correction of the offset imaging data.

[0011] Preferably, the horizontal well logging data includes the wellbore deviation (DEV), azimuth (AZ), and depth of measurement (MD) curves. The coordinates of the wellbore trajectory in space are calculated based on the wellbore deviation (DEV), azimuth (AZ), and depth of measurement (MD) curves, using the following formula:

[0012] x = cos(AZ) * cos(DEV) * MD

[0013] y = sin(azimuth) * cos(tilt) * MD

[0014] z = sin(angle of inclination) * MD.

[0015] Preferably, offset imaging data in different azimuths are generated based on remote sounding logging data, wherein different azimuths include, but are not limited to, 0 degrees, 45 degrees, 90 degrees and 135 degrees.

[0016] Preferably, each narrow strip image is sequentially drawn onto the designed grid, and the design process is as follows:

[0017] S1, Select the first offset imaging narrow strip image, and calculate the coordinates of the four vertices of the narrow strip image in three-dimensional space based on the depth, orientation and radial depth of the detection contained in the first offset imaging narrow strip image, and draw the narrow strip image into the grid formed by the coordinates of the four vertices in three-dimensional space.

[0018] S2, select the i-th offset imaging narrow strip image, where i>1; calculate the coordinates in space of the two vertices of the bottom edge of the narrow strip image based on the depth, orientation and radial depth of the detection contained in the i-th offset imaging narrow strip image;

[0019] S3, draws the narrow strip image onto the grid formed by the coordinates of the two bottom vertices calculated by S1 and the two bottom vertices calculated by S2;

[0020] S4, draw the offset imaging narrow strip image along the three-dimensional spatial well trajectory, and correct the three-dimensional well trajectory of the offset imaging image;

[0021] S5. Repeat S1 to S4 to draw offset imaging maps at different angles along the three-dimensional well trajectory in three-dimensional space, and complete the horizontal well three-dimensional well trajectory correction of the offset imaging data.

[0022] Furthermore, the vertex coordinates are calculated based on the horizontal well, as follows:

[0023] In a horizontal well, the width of the i-th offset imaging stripe is set to wi, and the depth of the wellbore trajectory at the top edge of the i-th offset imaging stripe is depth. i coordinates on (Px) i ,Py i ,Pz i ), with (Px i ,Py i ,Pz i Centered on y, rotated by a specified azimuth angle θ along the y-axis, the matrix transformation formula is:

[0024]

[0025] The calculated coordinates of the two bottom points at the top edge of the narrow strip image in space are as follows:

[0026] P1(Px i +sinθ*wi,Py i ,Pz i +cosθ*wi), P2(Px) i -sinθ*wi,Py i ,Pz i -cosθ*wi).

[0027] Furthermore, the vertex coordinates are calculated based on the vertical wells, as follows:

[0028] In a vertical well, the width of the i-th offset imaging narrow strip is set to wi, and the wellbore trajectory is set to depth at the top edge of the i-th offset imaging narrow strip. i coordinates on (Px) i ,Py i ,Pz i ), with (Px i ,Py i ,Pz i Centered on the z-axis, rotated by a specified azimuth angle θ along the z-axis, the matrix transformation formula is:

[0029]

[0030] The calculated spatial coordinates of the top two vertices of the narrow strip image are as follows:

[0031] P1(Px i +cosθ*wi,Py i+sinθ*wi,Pz i ), P2(Px i -cosθ*wi,Py i -sinθ*wi,Pz i ).

[0032] Secondly, the present invention also provides a three-dimensional well trajectory correction system for remote acoustic migration imaging data, comprising:

[0033] The drawing module is used to collect horizontal well logging data, calculate the spatial coordinates of the wellbore trajectory based on the horizontal well logging data, and draw the wellbore trajectory based on the spatial coordinates of the wellbore trajectory.

[0034] The generation module is used to generate migration imaging data in different orientations based on remote sounding logging data, and to generate migration imaging images using color marks based on the migration imaging data.

[0035] The correction module is used to divide the offset imaging image into multiple narrow strip images along the vertical well axis, draw each narrow strip image sequentially into the designed grid, and draw the offset imaging images generated from the offset imaging data in different orientations sequentially into three-dimensional space to complete the horizontal well three-dimensional well trajectory correction of the offset imaging data.

[0036] Thirdly, the present invention also provides a mobile terminal, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the three-dimensional well trajectory correction method for remote acoustic migration imaging data as described above.

[0037] Fourthly, the present invention also provides a computer-readable storage medium storing a computer program, characterized in that, when the computer program is executed by a processor, it implements the steps of the three-dimensional well trajectory correction method for remote acoustic migration imaging data as described above.

[0038] Fifthly, the computer program product of the present invention includes computer instructions that instruct a computing device to perform operations corresponding to the three-dimensional well trajectory correction method for remote acoustic migration imaging data described above.

[0039] Compared with the prior art, the present invention has the following beneficial technical effects:

[0040] This invention provides a method for correcting the three-dimensional well trajectory of long-range acoustic migration imaging data. The method calculates the spatial coordinates of the wellbore trajectory based on horizontal well logging data, and then plots the wellbore trajectory based on these coordinates. Next, migration imaging data from different azimuths is generated based on the long-range acoustic logging data, and migration imaging images are generated using color markers based on these images. The migration imaging images are then divided into multiple narrow strip images along the vertical well axis, and each strip image is sequentially plotted onto a designed grid. The migration imaging images generated from the migration imaging data from different azimuths are then sequentially plotted into three-dimensional space. This method accurately depicts the spatial relationships and development of reflectors such as formation interfaces, faults, and fractures near the horizontal wellbore. Under complex horizontal well trajectory conditions, this method effectively improves the ability to correct the three-dimensional well trajectory of long-range acoustic reflection signals.

[0041] Furthermore, each narrow strip image is sequentially plotted onto the designed grid. During the design process, the coordinates of the four vertices of the first offset imaging narrow strip image in three-dimensional space are calculated, and the narrow strip image is plotted onto the grid formed by the coordinates of the four vertices in three-dimensional space. Then, for the i-th offset imaging narrow strip image (i>1), the coordinates of the two vertices of the bottom edge of the narrow strip image in space are calculated, and the narrow strip image is plotted onto the grid formed by the coordinates of the two bottom edge vertices calculated by S1 and the two bottom edge vertices calculated by S2. This improves the accuracy of the spatial relationship and development of reflectors such as formation interfaces, faults, and fractures near the horizontal wellbore, and facilitates the three-dimensional well trajectory correction of far-field acoustic wave reflection signals. Attached Figure Description

[0042] Figure 1 This is a flowchart of the three-dimensional well trajectory correction method for long-range acoustic migration imaging data in this invention;

[0043] Figure 2 A horizontal well remote sounding acoustic migration imaging map generated using existing technology, including a schematic diagram of formation interfaces and pseudo-signals;

[0044] Figure 3 This is a schematic diagram of the formation interface and pseudo-signals after three-dimensional well trajectory correction using the remote acoustic migration imaging data of this invention;

[0045] Figure 4 This is a schematic diagram of the three-dimensional well trajectory correction method for long-range acoustic migration imaging data in this invention;

[0046] Figure 5 This is a schematic diagram of the three-dimensional well trajectory correction system for long-range acoustic migration imaging data in this invention.

[0047] In the diagram: 1-Drawing module; 2-Generation module; 3-Correction module. Detailed Implementation

[0048] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0049] The present invention will now be described in further detail with reference to the accompanying drawings:

[0050] The purpose of this invention is to provide a method and related equipment for correcting three-dimensional well trajectory of remote sound wave migration imaging data, so as to solve the technical problem of how to perform three-dimensional well trajectory correction of remote sound wave reflection signals under complex horizontal well trajectory conditions.

[0051] Example 1

[0052] See Figure 1 In one embodiment of the present invention, a method for correcting three-dimensional well trajectory of remote acoustic migration imaging data is provided, comprising:

[0053] Step 1: Collect horizontal well logging data, calculate the spatial coordinates of the wellbore trajectory based on the horizontal well logging data, and draw the wellbore trajectory based on the spatial coordinates of the wellbore trajectory.

[0054] Specifically, horizontal well logging data includes the wellbore deviation (DEV), azimuth (AZ), and depth of measurement (MD) curves. The spatial coordinates of the wellbore trajectory are calculated based on these curves using the following formula:

[0055] x = cos(AZ) * cos(DEV) * MD

[0056] y = sin(azimuth) * cos(tilt) * MD

[0057] z = sin(angle of inclination) * MD.

[0058] Step 2: Generate offset imaging data in different orientations based on the remote sounding acoustic logging data, and generate offset imaging images using color marks based on the offset imaging data;

[0059] Specifically, remote acoustic wave processing software is used to generate offset imaging data at different azimuths, such as 0 degrees, 45 degrees, 90 degrees, and 135 degrees. Users can select offset imaging data from any azimuth, and the two-dimensional data is then used to generate images using color marks, such as... Figure 2 As shown.

[0060] Step 3: Divide the offset imaging image into multiple narrow strip images along the vertical well axis, and draw each narrow strip image sequentially onto the designed grid, such as... Figure 4 As shown, the offset imaging images generated from offset imaging data in different orientations are sequentially plotted into three-dimensional space to complete the horizontal well three-dimensional well trajectory correction of the offset imaging data.

[0061] Specifically, each narrow strip image is sequentially drawn onto the designed grid, and the design process is as follows:

[0062] S1, Select the first offset imaging narrow strip image, and calculate the coordinates of the four vertices of the narrow strip image in three-dimensional space based on the depth, orientation and radial depth of the detection contained in the first offset imaging narrow strip image, and draw the narrow strip image into the grid formed by the coordinates of the four vertices in three-dimensional space.

[0063] S2, select the i-th offset imaging narrow strip image, where i>1; calculate the coordinates in space of the two vertices of the bottom edge of the narrow strip image based on the depth, orientation and radial depth of the detection contained in the i-th offset imaging narrow strip image;

[0064] S3 draws the narrow strip image onto the grid formed by the coordinates of the two bottom vertices calculated by S1 and the two bottom vertices calculated by S2.

[0065] Specifically, the vertex coordinates are calculated based on both the horizontal and vertical wells. The specific process is as follows:

[0066] In a horizontal well, the width of the i-th offset imaging stripe is set to wi, and the depth of the wellbore trajectory at the top edge of the i-th offset imaging stripe is depth. i coordinates on (Px) i ,Py i ,Pz i ), with (Px i ,Py i ,Pz i Centered on y, rotated by a specified azimuth angle θ along the y-axis, the matrix transformation formula is:

[0067]

[0068] The coordinates of the two bottom vertices of the narrow strip image in space are calculated as follows:

[0069] P1(Px i +sinθ*wi,Py i ,Pz i +cosθ*wi), P2(Px) i -sinθ*wi,Py i ,Pz i -cosθ*wi);

[0070] In a vertical well, the width of the i-th offset imaging narrow strip image is set to wi, and the depth of the wellbore trajectory at the top edge of the i-th offset imaging narrow strip image is depth. i coordinates on (Px) i ,Py i ,Pz i ), with (Px i ,Py i ,Pz i Centered on the z-axis, rotated by a specified azimuth angle θ along the z-axis, the matrix transformation formula is:

[0071]

[0072] The coordinates of the two bottom vertices of the narrow strip image in space are calculated as follows:

[0073] P1(Px i +cosθ*wi,Py i +sinθ*wi,Pz i ), P2(Px i -cosθ*wi,Py i -sinθ*wi,Pz i ).

[0074] S4, draws all narrow slices of the offset image along the three-dimensional spatial well trajectory, and realizes the three-dimensional well trajectory correction of the offset imaging map.

[0075] Specifically, in the generated 2D offset imaging, the wellbore is depicted as a straight line, not reflecting the actual well trajectory. Therefore, the acoustic phase axis in the image no longer reflects the true shape of the geological reflectors. However, the relative distance between the acoustic phase axis and the wellbore is accurate. Figure 4 As shown in a. After processing in this step, as shown in [a]. Figure 4 As shown in b, an offset imaging map is drawn along the three-dimensional well trajectory in three-dimensional space, as shown in Figure 1. Figure 4 As shown in Figure c, the well trajectory in the 3D spatial migration imaging result is the actual well trajectory. Since the relative distance between the acoustic phase axis and the wellbore in the migration imaging result is accurate, the shape of the acoustic phase axis in the 3D spatial migration imaging result can accurately reflect the shape of the geological reflector. From Figure 4 As can be seen in c, the acoustic phase axis indicated by the white hollow arrow is approximately horizontal, reflecting the formation interface.

[0076] S5. Repeat S1 to S4 to draw offset imaging maps at different angles along the three-dimensional well trajectory in three-dimensional space, and complete the horizontal well three-dimensional well trajectory correction of the offset imaging data.

[0077] Step 4: Interpret geological reflectors based on the acoustic phase axis in the offset imaging image after 3D well trajectory correction. For example... Figure 3 In the diagram, the acoustic phase axis below the wellbore trajectory indicated by the white hollow arrow is approximately horizontal, which can be interpreted as a formation interface; the acoustic phase axis above the wellbore trajectory is arc-shaped, which can be interpreted as a pseudo-signal generated during processing and has no geological significance.

[0078] In summary, this embodiment provides a method for correcting the three-dimensional well trajectory of long-range acoustic migration imaging data. It calculates the spatial coordinates of the wellbore trajectory based on horizontal well logging data, plots the wellbore trajectory using these coordinates, generates migration imaging data from different azimuths based on long-range acoustic logging data, and generates migration imaging images using color markers. The migration imaging images are then divided into multiple narrow strips along the vertical well axis, and each strip is sequentially plotted onto a designed grid. The generated migration imaging images from different azimuths are then sequentially plotted into three-dimensional space. The long-range acoustic migration imaging image, corrected for the three-dimensional well trajectory, accurately depicts the spatial relationships and development of reflectors such as formation interfaces, faults, and fractures near the horizontal wellbore. Under complex horizontal well trajectory conditions, this method effectively improves the geological body interpretation accuracy of long-range acoustic reflection signals.

[0079] Example 2

[0080] according to Figure 5 As shown, the present invention also provides a three-dimensional well trajectory correction system for long-range acoustic migration imaging data, comprising:

[0081] The drawing module 1 is used to collect horizontal well logging data, calculate the spatial coordinates of the wellbore trajectory based on the horizontal well logging data, and draw the wellbore trajectory based on the spatial coordinates of the wellbore trajectory.

[0082] The generation module 2 is used to generate offset imaging data in different orientations based on the remote sounding acoustic logging data, and to generate offset imaging images using color marks based on the offset imaging data.

[0083] The correction module 3 is used to divide the offset imaging image into multiple narrow strip images along the vertical well axis, draw each narrow strip image sequentially into the designed grid, and draw the offset imaging images generated from the offset imaging data in different orientations sequentially into three-dimensional space to complete the horizontal well three-dimensional well trajectory correction of the offset imaging data.

[0084] Example 3

[0085] The present invention also provides a mobile terminal, including a memory, a processor, and a computer program stored in the memory and executable on the processor, such as a three-dimensional well trajectory correction program for remote acoustic migration imaging data.

[0086] When the processor executes the computer program, it implements the steps of the above-described method for correcting the three-dimensional well trajectory of remote acoustic migration imaging data, for example:

[0087] Collect horizontal well logging data, calculate the spatial coordinates of the wellbore trajectory based on the horizontal well logging data, and draw the wellbore trajectory based on the spatial coordinates of the wellbore trajectory;

[0088] Based on the remote sounding logging data, offset imaging data in different orientations is generated, and offset imaging images are generated using color marks based on the offset imaging data;

[0089] The offset imaging image is divided into multiple narrow strip images along the vertical well axis. Each narrow strip image is then drawn sequentially into the designed grid. The offset imaging images generated from offset imaging data in different orientations are then drawn sequentially into three-dimensional space to complete the horizontal well three-dimensional well trajectory correction of the offset imaging data.

[0090] Alternatively, when the processor executes the computer program, it implements the functions of each module in the above system, for example:

[0091] The drawing module 1 is used to collect horizontal well logging data, calculate the spatial coordinates of the wellbore trajectory based on the horizontal well logging data, and draw the wellbore trajectory based on the spatial coordinates of the wellbore trajectory.

[0092] The generation module 2 is used to generate offset imaging data in different orientations based on the remote sounding acoustic logging data, and to generate offset imaging images using color marks based on the offset imaging data.

[0093] The correction module 3 is used to divide the offset imaging image into multiple narrow strip images along the vertical well axis, draw each narrow strip image sequentially into the designed grid, and draw the offset imaging images generated from the offset imaging data in different orientations sequentially into three-dimensional space to complete the horizontal well three-dimensional well trajectory correction of the offset imaging data.

[0094] For example, the computer program may be divided into one or more modules / units, which are stored in the memory and executed by the processor to complete the present invention. The one or more modules / units may be a series of computer program instruction segments capable of performing a specific function, which describe the execution process of the computer program in the mobile terminal.

[0095] For example, the computer program can be divided into a drawing module 1, a generation module 2, and a correction module 3; the specific functions of each module are as follows:

[0096] The drawing module 1 is used to collect horizontal well logging data, calculate the spatial coordinates of the wellbore trajectory based on the horizontal well logging data, and draw the wellbore trajectory based on the spatial coordinates of the wellbore trajectory.

[0097] The generation module 2 is used to generate offset imaging data in different orientations based on the remote sounding acoustic logging data, and to generate offset imaging images using color marks based on the offset imaging data.

[0098] The correction module 3 is used to divide the offset imaging image into multiple narrow strip images along the vertical well axis, draw each narrow strip image sequentially into the designed grid, and draw the offset imaging images generated from the offset imaging data in different orientations sequentially into three-dimensional space to complete the horizontal well three-dimensional well trajectory correction of the offset imaging data.

[0099] The mobile terminal can be a computing device such as a desktop computer, laptop, handheld computer, or cloud server. The mobile terminal may include, but is not limited to, a processor and memory.

[0100] The processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor. The processor is the control center of the mobile terminal, connecting various parts of the mobile terminal via various interfaces and lines.

[0101] The memory can be used to store the computer program and / or module. The processor implements various functions of the mobile terminal by running or executing the computer program and / or module stored in the memory and calling the data stored in the memory.

[0102] The memory may primarily include a program storage area and a data storage area. The program storage area may store the operating system and at least one application program required for a given function (such as sound playback or image playback). The data storage area may store data created based on the use of the phone (such as audio data or a phonebook). Furthermore, the memory may include high-speed random access memory (RAM) and non-volatile memory, such as hard disks, RAM, plug-in hard disks, SmartMediaCards (SMC), Secure Digital (SD) cards, flash cards, at least one disk storage device, flash memory device, or other volatile solid-state storage devices.

[0103] Example 4

[0104] The present invention also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the method for correcting three-dimensional well trajectory of remote acoustic migration imaging data.

[0105] If the modules / units integrated in the mobile terminal are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.

[0106] Based on this understanding, all or part of the processes in the above method can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium. When executed by a processor, the computer program can implement the steps of the above-described aggregated reinforcement learning resource scheduling method. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or some intermediate form.

[0107] The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording media, USB flash drive, portable hard drive, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal, and software distribution medium, etc.

[0108] It should be noted that the content contained in the computer-readable medium may be appropriately added to or subtracted from the content as required by the legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium may not include electrical carrier signals and telecommunication signals.

[0109] Example 5

[0110] A computer program product includes computer instructions that instruct a computing device to perform operations corresponding to the three-dimensional well trajectory correction method for remote acoustic migration imaging data as described above.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for 3D well trajectory correction of far-offset acoustic wave migration imaging data, the method comprising: The method comprises the following steps: Collecting horizontal well logging data, calculating the coordinates of the wellbore trajectory in space according to the horizontal well logging data, and drawing the wellbore trajectory according to the coordinates of the wellbore trajectory in space; Generating offset imaging data of different azimuths according to the far-detecting acoustic logging data, and generating offset imaging pictures by color labels according to the offset imaging data; Splitting the offset imaging pictures into multiple narrow strip pictures along the vertical well axis direction, drawing each narrow strip picture into the designed grid in turn, and drawing the offset imaging pictures generated by the offset imaging data of different azimuths into the three-dimensional space in turn to complete the horizontal well three-dimensional well trajectory correction of the offset imaging data.

2. The method of claim 1, wherein, The horizontal well logging data comprises the deviation (DEV), azimuth (AZ) and measured depth (MD) curves of the horizontal well logging, and the coordinates of the wellbore trajectory in space are calculated according to the deviation (DEV), azimuth (AZ) and measured depth (MD) curves, and the formula is as follows: x = cos (AZ) * cos (DEV) * MD y = sin (azimuth) * cos (inclination) * MD z = sin (inclination) * MD.

3. The method of claim 1, wherein, The far-detecting acoustic logging data of different azimuths are generated according to the far-detecting acoustic logging data, wherein the different azimuths include but are not limited to 0 degrees, 45 degrees, 90 degrees and 135 degrees.

4. The method of claim 1, wherein, Each narrow strip picture is drawn into the designed grid in turn, and the design process is as follows: S1, selecting the first offset imaging narrow strip picture, calculating the coordinates of the four vertices of the narrow strip picture in the three-dimensional space according to the depth, azimuth and detected radial depth contained in the first offset imaging narrow strip picture, and drawing the narrow strip picture into the grid formed by the four vertex coordinates in the three-dimensional space; S2, selecting the i-th offset imaging narrow strip picture, wherein i > 1; calculating the coordinates of the two vertices of the bottom edge of the narrow strip picture in space according to the depth, azimuth and detected radial depth contained in the i-th offset imaging narrow strip picture; S3, drawing the narrow strip picture into the grid formed by the two bottom edge vertices calculated in S1 and the two bottom edge vertices calculated in S2; S4, drawing the offset imaging narrow strip picture along the three-dimensional well trajectory to correct the three-dimensional well trajectory of the offset imaging picture; S5, repeating S1 to S4 to draw the offset imaging pictures of different azimuths along the three-dimensional well trajectory in the three-dimensional space to complete the horizontal well three-dimensional well trajectory correction of the offset imaging data.

5. The method of claim 4, wherein, The vertex coordinates are calculated according to the horizontal well, and the specific process is as follows: In a horizontal well, the width of the i-th offset imaging stripe is set to wi, and the depth of the wellbore trajectory at the top edge of the i-th offset imaging stripe is depth. i coordinates on (Px) i ,Py i ,Pz i ), with (Px i ,Py i ,Pz i Centered on y, rotated by a specified azimuth angle θ along the y-axis, the matrix transformation formula is: The coordinates of the two bottom points of the top edge of the narrow strip picture in space are as follows: P1(Px i +sinθ*wi,Py i ,Pz i +cosθ*wi), P2(Px i -sinθ*wi,Py i ,Pz i -cosθ*wi).

6. The method of claim 4, wherein, The vertex coordinates are calculated according to the vertical well, and the specific process is as follows: In a vertical well, the width of the i-th offset imaging narrow strip is set to wi, and the wellbore trajectory is set to depth at the top edge of the i-th offset imaging narrow strip. i coordinates on (Px) i ,Py i ,Pz i ), with (Px i ,Py i ,Pz i Centered on the z-axis, rotated by a specified azimuth angle θ along the z-axis, the matrix transformation formula is: The coordinates of the two vertices of the top edge of the narrow strip picture in space are as follows: P1 (Px i + cos θ * w1, Py i + sin θ * w1, Pz i ), P2 (Px i - cos θ * w1, Py i - sin θ * w1, Pz i ).

7. A system for 3D well trajectory correction of far-offset acoustic wave migration imaging data, the system comprising: The method comprises the following steps: A drawing module (1) is used for collecting horizontal well logging data, calculating the coordinates of the wellbore trajectory in space according to the horizontal well logging data, and drawing the wellbore trajectory according to the coordinates of the wellbore trajectory in space; A generation module (2) is used for generating offset imaging data of different azimuths according to the far-detecting acoustic logging data, and generating offset imaging pictures by color labels according to the offset imaging data; The correction module (3) is used for cutting the migration image along the vertical well axis direction into a plurality of narrow strip images, drawing each narrow strip image into a designed grid in sequence, and drawing the migration images generated by the migration data of different azimuths into a three-dimensional space in sequence, so as to complete the horizontal well three-dimensional well track correction of the migration data.

8. A mobile terminal comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, The processor executes the computer program to realize the steps of the method for correcting the three-dimensional well track of the far-probed acoustic wave migration data according to any one of claims 1-6.

9. A computer-readable storage medium storing a computer program, the computer program comprising instructions that, when executed by a computer, cause the computer to perform the method of any one of claims 1 to 8. The computer program is executed by the processor to realize the steps of the method for correcting the three-dimensional well track of the far-probed acoustic wave migration data according to any one of claims 1-6.

10. A computer program product comprising computer instructions, characterized in that, The computer instructions instruct the computing device to execute the operations corresponding to the method for correcting the three-dimensional well track of the far-probed acoustic wave migration data according to any one of claims 1-6.

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