Underground structure dip angle determination method and device based on three-dimensional seismic data

Abstract

The invention relates to the field of geophysical exploration, and discloses an underground structure inclination angle determination method and device based on three-dimensional seismic data. The method comprises the following steps: determining a first apparent dip angle in a main measuring line direction and a second apparent dip angle in a tie line direction at a target position in an earthquake three-dimensional imaging data volume; and according to the first apparent dip angle and the second apparent dip angle, determining a stratum true dip angle at the target position through a preset dip angle determination model. Firstly, data information of a three-dimensional seismic imaging data body is obtained through conventional seismic data processing, then the three-dimensional seismic imaging data are scanned in the directions of a main measuring line and a connecting line, apparent dip angles in the two directions are obtained, conversion is carried out based on the apparent dip angle of the main measuring line and the apparent dip angle of the connecting line through an angle conversion model, and the three-dimensional seismic imaging data body is obtained. True dip angle information of the underground structure is obtained, and dip angle extraction of all underground sampling points of the three-dimensional work area is completed. The method has the advantages of high stability of extracted main measuring line visual dip angle information and tie line slope information, high signal-to-noise ratio and the like.

Description

Technical Field

[0001] The present application relates to the field of geophysical exploration technology, and in particular to a method, device, storage medium and electronic device for determining the dip angle of underground structures based on three-dimensional seismic data. 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] At present, with the continuous deepening of oil and gas exploration, non-stratified oil and gas reservoirs have become one of the main exploration targets. In this case, many seismic data processing algorithms based on the layered hypothesis are no longer applicable. Introducing the true dip of underground strata and developing new theories, methods and technologies is the key. For the technical research and development in this area, obtaining the true dip of underground structures from three-dimensional seismic data is the key.

[0004] On the other hand, for seismic data interpretation, the acquisition of underground structural dip can better understand the underground structural morphology and achieve more detailed structural interpretation, thereby guiding the orientation of fractures and completing reservoir prediction. Therefore, the acquisition of underground structural true dip is crucial for seismic data processing and interpretation.

[0005] Conventional underground true dip extraction is usually based on logging data and directly uses equipment to observe in the well, using the formation dip logging instrument to directly obtain the strike, dip and dip information of the formation. This method can meet the requirements when applied in the field of well logging. However, in the field of geophysical exploration, this method can only obtain the formation dip information at the wellhead position, and cannot obtain all the three-dimensional dip information of the entire underground work area. Usually, it can only extrapolate the dip of the wellhead position along the structure. This method will cause the extraction accuracy of the dip to drop rapidly as the distance from the wellhead increases.

[0006] Therefore, a new method for determining the inclination of underground structures is urgently needed to solve the defects mentioned above. Summary of the invention

[0007] In response to the above problems, the present application proposes a method, device, storage medium and electronic device for determining the dip angle of underground structures based on three-dimensional seismic data.

[0008] In a first aspect of the present application, a method for determining the dip angle of underground structures based on three-dimensional seismic data is provided, the method comprising:

[0009] Determine a first apparent dip angle in the direction of the main survey line and a second apparent dip angle in the direction of the tie line at a target position in a seismic three-dimensional imaging data volume;

[0010] According to the first apparent dip angle and the second apparent dip angle, the true dip angle of the formation at the target position is determined by a preset dip angle determination model.

[0011] Furthermore, it also includes:

[0012] Traversing the value of each imaging data sampling point in the seismic three-dimensional imaging data volume;

[0013] According to the first apparent dip angle and the second apparent dip angle, the true dip angle of the formation at each imaging data sampling point is determined by a preset dip angle determination model to obtain the azimuth information corresponding to the seismic three-dimensional imaging data volume.

[0014] Furthermore, it also includes:

[0015] The true dip angle of the formation is converted by a preset angle conversion model to obtain the arc information at the underground target position; wherein the preset angle conversion model includes:

[0016]

[0017] Among them, θ(i,j,k) is the true dip of the formation, is the arc corresponding to the true dip of the formation.

[0018] Further, when both the first apparent inclination angle and the second apparent inclination angle are not less than a preset threshold, the preset inclination angle determination model includes:

[0019]

[0020] Among them, ε is the stability factor, θ x (i,j,k) is the first visual inclination angle, θ y (i,j,k) is the second apparent inclination angle.

[0021] Further, when the first apparent inclination angle is less than a preset threshold and the second apparent inclination angle is not less than a preset threshold, the preset inclination angle determination model includes:

[0022]

[0023] Among them, ε is the stability factor, θ x (i,j,k) is the first visual inclination angle, θ y (i,j,k) is the second apparent inclination angle.

[0024] Further, when the first apparent inclination angle and the second apparent inclination angle are both smaller than a preset threshold, the preset inclination angle determination model includes:

[0025]

[0026] Among them, ε is the stability factor, θ x (i,j,k) is the first visual inclination angle, θ y (i,j,k) is the second apparent inclination angle.

[0027] Further, when the first apparent inclination angle is not less than a preset threshold and the second apparent inclination angle is less than a preset threshold, the preset inclination angle determination model includes:

[0028]

[0029] Among them, ε is the stability factor, θ x (i,j,k) is the first visual inclination angle, θ y (i,j,k) is the second apparent inclination angle.

[0030] The second aspect of the present application provides a device for determining the dip angle of underground structures based on three-dimensional seismic data, the device comprising:

[0031] An apparent dip angle determination module is used to determine a first apparent dip angle in the direction of the main survey line and a second apparent dip angle in the direction of the tie line at a target position in a seismic three-dimensional imaging data volume;

[0032] The formation true dip angle determination module is used to determine the formation true dip angle at the target position according to the first apparent dip angle and the second apparent dip angle by using a preset dip angle determination model.

[0033] According to a third aspect of the present application, a computer-readable storage medium is provided, wherein a computer program stored in the computer-readable storage medium can be executed by one or more processors to implement the steps of the method described above.

[0034] The fourth 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.

[0035] Compared with the prior art, the advantages or beneficial effects of the technical solution of the present application include:

[0036] The method for determining the dip angle of underground structures based on three-dimensional seismic data disclosed in the present application first obtains the data information of the three-dimensional seismic imaging data body through conventional seismic data processing, then scans the three-dimensional seismic imaging data along the main survey line and the tie line respectively to obtain the apparent dip angles in two directions, and then uses the angle conversion model proposed in the present application to convert the apparent dip angles of the main survey line and the tie line to obtain the true dip angle information of the underground structure, thereby completing the dip angle extraction of all sampling points underground in the three-dimensional work area. It also has the advantages of high stability of the extracted apparent dip angle information of the main survey line and the slope information of the tie line, and high signal-to-noise ratio. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] 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.

[0038] 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:

[0039] Figure 1 A flowchart of a method for determining the dip angle of underground structures based on three-dimensional seismic data provided in an embodiment of the present application;

[0040] Figure 2 A schematic diagram of a section of an input seismic data volume provided in an embodiment of the present application;

[0041] Figure 3 A schematic diagram of an apparent dip angle profile corresponding to a main survey line direction provided in an embodiment of the present application;

[0042] Figure 4 A schematic cross-sectional diagram of an apparent inclination angle corresponding to a tie line direction provided in an embodiment of the present application;

[0043] Figure 5 A schematic diagram of a true dip angle profile of an underground structure obtained by calculation provided in an embodiment of the present application;

[0044] Figure 6 A schematic diagram of a plane of an input seismic data volume provided in an embodiment of the present application;

[0045] Figure 7 A schematic diagram of a plane view of an apparent inclination angle corresponding to a main survey line direction provided in an embodiment of the present application;

[0046] Figure 8 A schematic diagram of a plane view of an apparent inclination angle corresponding to a tie line direction provided in an embodiment of the present application;

[0047] Fig. 9 A schematic diagram of a calculated true inclination angle of an underground structure provided in an embodiment of the present application;

[0048] Fig.10 A schematic diagram of the structure of a device for determining the dip angle of underground structures based on three-dimensional seismic data provided in an embodiment of the present application;

[0049] Fig.11 A connection block diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0050] 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.

[0051] 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.

[0052] As can be seen from the background technology, at present, with the continuous deepening of oil and gas exploration, non-stratified oil and gas reservoirs have become one of the main exploration targets. In this case, many seismic data processing algorithms based on the layered hypothesis are no longer applicable. Introducing the true dip of underground strata and developing new theories, methods and technologies is the key. For technical research and development in this area, obtaining the true dip of underground structures from three-dimensional seismic data is the key.

[0053] On the other hand, for seismic data interpretation, the acquisition of underground structural dip can better understand the underground structural morphology and achieve more detailed structural interpretation, thereby guiding the orientation of fractures and completing reservoir prediction. Therefore, the acquisition of underground structural true dip is crucial for seismic data processing and interpretation.

[0054] Conventional underground true dip extraction is usually based on logging data and directly uses equipment to observe in the well, using the formation dip logging instrument to directly obtain the strike, dip and dip information of the formation. This method can meet the requirements when applied in the field of well logging. However, in the field of geophysical exploration, this method can only obtain the formation dip information at the wellhead position, and cannot obtain all the three-dimensional dip information of the entire underground work area. Usually, it can only extrapolate the dip of the wellhead position along the structure. This method will cause the extraction accuracy of the dip to drop rapidly as the distance from the wellhead increases.

[0055] In view of this, the present application discloses a method for determining the dip angle of underground structures based on three-dimensional seismic data. The method first obtains data information of a three-dimensional seismic imaging data body through conventional seismic data processing; then, the three-dimensional seismic imaging data is scanned along the main survey line and the tie line respectively to obtain the apparent dip angles in two directions, and then the angle conversion method proposed in the present invention can be used to convert the apparent dip angles of the main survey line and the tie line to obtain the true dip angle information of the underground structure, and complete the dip angle extraction of all sampling points underground in the three-dimensional work area.

[0056] Embodiment 1

[0057] This embodiment provides a method for determining the dip angle of underground structures based on three-dimensional seismic data. Figure 1 A flowchart of a method for determining an underground structural dip angle based on three-dimensional seismic data is provided in an embodiment of the present application, such as Figure 1 As shown, the method disclosed in this embodiment includes the following steps:

[0058] Step 110, determining a first apparent dip angle in the direction of the main survey line and a second apparent dip angle in the direction of the tie line at the target position in the seismic three-dimensional imaging data volume;

[0059] Step 120: Determine the true dip of the formation at the target position by using a preset dip determination model according to the first apparent dip angle and the second apparent dip angle.

[0060] As an example, the first apparent inclination angle is θ x (i,j,k) is used to represent the second apparent inclination angle, θ y (i,j,k) is used to represent it.

[0061] In some embodiments, when both the first apparent inclination angle and the second apparent inclination angle are not less than a preset threshold, the preset inclination angle determination model includes:

[0062]

[0063] Among them, ε is the stability factor, θ x (i,j,k) is the first visual inclination angle, θ y (i,j,k) is the second apparent inclination angle.

[0064] In some embodiments, when the first apparent inclination angle is less than a preset threshold and the second apparent inclination angle is not less than a preset threshold, the preset inclination angle determination model includes:

[0065]

[0066] Among them, ε is the stability factor, θ x (i,j,k) is the first visual inclination angle, θ y (i,j,k) is the second apparent inclination angle.

[0067] In some embodiments, when both the first apparent inclination angle and the second apparent inclination angle are less than a preset threshold, the preset inclination angle determination model includes:

[0068]

[0069] Among them, ε is the stability factor, θ x (i,j,k) is the first visual inclination angle, θ y (i,j,k) is the second apparent inclination angle.

[0070] In some embodiments, when the first apparent inclination angle is not less than a preset threshold and the second apparent inclination angle is less than a preset threshold, the preset inclination angle determination model includes:

[0071]

[0072] Among them, ε is the stability factor, θ x (i,j,k) is the first visual inclination angle, θ y (i,j,k) is the second apparent inclination angle.

[0073] Optionally, the preset threshold may be set to 0.

[0074] As an example, firstly, the apparent dip angles of the main survey line and the tie line are calculated based on the 3D seismic imaging data volume as θ x (i,j,k) and θ y (i,j,k), then the underground structural dip angle θ(i,j,k) at the underground point (i,j,k) can be used to calculate the underground structural azimuth according to the positive and negative classification of the apparent dip angles in the two directions. In different cases, it can be expressed by the following formulas:

[0075] (1) When θ x (i,j,k)≥0,θ y When (i,j,k)≥0, the true inclination of the underground structure can be expressed as:

[0076]

[0077] Wherein, in formula (1): ε is a stability factor, and its value can usually be a smaller number, such as 0.001.

[0078] (2) When θ x (i,j,k)<0,θ y When (i,j,k)≥0, the true inclination of the underground structure can be expressed as:

[0079]

[0080] (3) When θ x (i,j,k)<0,θ y When (i,j,k)<0, the true inclination of the underground structure can be expressed as:

[0081]

[0082] (4) When θ x (i,j,k)≥0,θ y When (i,j,k)<0, the true inclination of the underground structure can be expressed as:

[0083]

[0084] In some embodiments, it also includes:

[0085] Traversing the value of each imaging data sampling point in the seismic three-dimensional imaging data volume;

[0086] According to the first apparent dip angle and the second apparent dip angle, the true dip angle of the formation at each imaging data sampling point is determined by a preset dip angle determination model to obtain the azimuth information corresponding to the seismic three-dimensional imaging data volume.

[0087] Furthermore, by traversing each imaging data sampling point in the three-dimensional seismic imaging data volume, the azimuth information corresponding to the entire data volume can be obtained.

[0088] Finally, the radian θ(i,j,k) obtained above can be converted into

[0089] As an example, this also includes:

[0090] The true dip angle of the formation is converted by a preset angle conversion model to obtain the arc information at the underground target position; wherein the preset angle conversion model includes:

[0091]

[0092] Among them, θ(i,j,k) is the true dip of the formation, is the arc corresponding to the true dip of the formation.

[0093] According to the method provided in this embodiment, firstly, the data information of the three-dimensional seismic imaging data body is obtained by conventional seismic data processing; then, the three-dimensional seismic imaging data is scanned along the main survey line and the connecting line direction respectively to obtain the apparent dip angles in two directions, and then the angle conversion method proposed in the patent of the present invention can be used to convert based on the apparent dip angle of the main survey line and the apparent dip angle of the connecting line to obtain the true dip angle information of the underground structure, and complete the dip angle extraction of all sampling points underground in the three-dimensional work area. Specifically, the following steps are included: Step 110, determining the first apparent dip angle in the direction of the main survey line and the second apparent dip angle in the direction of the connecting line at the target position in the seismic three-dimensional imaging data body; Step 120, according to the first apparent dip angle and the second apparent dip angle, the true dip angle of the formation at the target position is determined by a preset dip angle determination model. It has the advantages of high stability of the extracted main survey line apparent dip angle information and connecting line slope information, and high signal-to-noise ratio.

[0094] Embodiment 2

[0095] This embodiment is a specific example. In this embodiment, the method for determining the dip angle of underground structures based on three-dimensional seismic data disclosed in this application is tested.

[0096] Specifically, the following steps are included:

[0097] The first step is to determine the first apparent dip angle in the direction of the main survey line of the seismic three-dimensional imaging data body and the second apparent dip angle in the direction of the tie line.

[0098] Optionally, the apparent dip angles of the main survey line direction and the tie line direction calculated based on the 3D seismic imaging data volume are θ x (i,j,k) and θ y (i,j,k).

[0099] As an example, the first apparent inclination angle is θ x (i,j,k) is used to represent the second apparent inclination angle, θ y (i,j,k) is used to represent it.

[0100] like Figure 2 As shown, it is a three-dimensional seismic imaging data volume section input in this embodiment, which is used to test the algorithm of extracting the true dip angle of the underground structure in the patent of the present invention.

[0101] Furthermore, the first apparent inclination angle in the direction of the main survey line and the second apparent inclination angle in the direction of the tie line can be referred to Figure 3 , Figure 4 as well as Figure 7 , Figure 8 Among them, Figure 3As shown in FIG. 1 , this is the apparent dip angle profile of the main survey line direction calculated using the three-dimensional seismic imaging data volume in the embodiment; it can be seen that the stability and signal-to-noise ratio of the extracted apparent dip angle information of the main survey line are high. Figure 4 As shown in FIG. 1 , this is the apparent dip angle profile of the tie line direction calculated using the three-dimensional seismic imaging data volume in the embodiment; it can be seen that the stability and signal-to-noise ratio of the extracted tie line apparent dip angle information are high. Figure 7 As shown in FIG. 1 , this is the apparent dip angle plane of the main survey line direction calculated using the three-dimensional seismic imaging data volume in the embodiment. From the plane, the extracted apparent dip angle information of the main survey line has high stability and signal-to-noise ratio. Figure 8 As shown, this is the apparent dip plane of the tie line direction calculated using the three-dimensional seismic imaging data volume in the embodiment. From the plane, the extracted tie line slope information has high stability and signal-to-noise ratio.

[0102] The second step is to determine the true dip of the formation at the target position through a preset dip determination model according to the first apparent dip angle and the second apparent dip angle.

[0103] In some embodiments, when both the first apparent inclination angle and the second apparent inclination angle are not less than a preset threshold, the preset inclination angle determination model includes:

[0104]

[0105] Among them, ε is the stability factor, θ x (i,j,k) is the first visual inclination angle, θ y (i,j,k) is the second apparent inclination angle.

[0106] In some embodiments, when the first apparent inclination angle is less than a preset threshold and the second apparent inclination angle is not less than a preset threshold, the preset inclination angle determination model includes:

[0107]

[0108] Among them, ε is the stability factor, θ x (i,j,k) is the first visual inclination angle, θ y (i,j,k) is the second apparent inclination angle.

[0109] In some embodiments, when both the first apparent inclination angle and the second apparent inclination angle are less than a preset threshold, the preset inclination angle determination model includes:

[0110]

[0111] Among them, ε is the stability factor, θ x (i,j,k) is the first visual inclination angle, θ y (i,j,k) is the second apparent inclination angle.

[0112] In some embodiments, when the first apparent inclination angle is not less than a preset threshold and the second apparent inclination angle is less than a preset threshold, the preset inclination angle determination model includes:

[0113]

[0114] Among them, ε is the stability factor, θ x (i,j,k) is the first visual inclination angle, θ y (i,j,k) is the second apparent inclination angle.

[0115] Optionally, the preset threshold may be set to 0.

[0116] As an example, firstly, the apparent dip angles of the main survey line and the tie line are calculated based on the 3D seismic imaging data volume as θ x (i,j,k) and θ y (i,j,k), then the underground structural dip angle θ(i,j,k) at the underground point (i,j,k) can be used to calculate the underground structural azimuth according to the positive and negative classification of the apparent dip angles in the two directions. In different cases, it can be expressed by the following formulas:

[0117] (1) When θ x (i,j,k)≥0,θ y When (i,j,k)≥0, the true inclination of the underground structure can be expressed as:

[0118]

[0119] Wherein, in formula (1): ε is a stability factor, and its value can usually be a smaller number, such as 0.001.

[0120] (2) When θ x (i,j,k)<0,θ y When (i,j,k)≥0, the true inclination of the underground structure can be expressed as:

[0121]

[0122] (3) When θ x (i,j,k)<0,θ y When (i,j,k)<0, the true inclination of the underground structure can be expressed as:

[0123]

[0124] (4) When θ x (i,j,k)≥0,θ y When (i,j,k)<0, the true inclination of the underground structure can be expressed as:

[0125]

[0126] In some embodiments, it also includes:

[0127] Traversing the value of each imaging data sampling point in the seismic three-dimensional imaging data volume;

[0128] According to the first apparent dip angle and the second apparent dip angle, the true dip angle of the formation at each imaging data sampling point is determined by a preset dip angle determination model to obtain the azimuth information corresponding to the seismic three-dimensional imaging data volume.

[0129] Furthermore, by traversing each imaging data sampling point in the three-dimensional seismic imaging data volume, the azimuth information corresponding to the entire data volume can be obtained.

[0130] Finally, the radian θ(i,j,k) obtained above can be converted into

[0131] Furthermore, the true dip profile of underground structures can be referenced Figure 5 and Fig. 9 Among them, Figure 5 As shown in the figure, the true dip angle profile of the underground structure corresponding to the three-dimensional seismic imaging data volume is calculated based on the apparent dip angle of the main survey line and the tie line using the method disclosed in this application; it can be seen that the true dip angle calculation is stable, no abnormal values ​​appear, and the result is in line with expectations. Fig. 9 As shown, it is the underground structure true dip plane corresponding to the three-dimensional seismic imaging data volume obtained by calculating the apparent dip angles of the main survey line and the connecting line using the method disclosed in this application; from the plane point of view, the calculation of the underground structure true dip is stable, no abnormal values ​​occur, and the result is in line with expectations.

[0132] like Figure 6 As shown, this is the three-dimensional seismic imaging data volume plane input in this embodiment, which is used to test the algorithm for extracting the true dip of the underground structure disclosed in this application.

[0133] In some embodiments, it also includes:

[0134] The true dip angle of the formation is converted by a preset angle conversion model to obtain the arc information at the underground target position; wherein the preset angle conversion model includes:

[0135]

[0136] Among them, θ(i,j,k) is the true dip of the formation, is the arc corresponding to the true dip of the formation.

[0137] According to the method provided in this embodiment, firstly, the data information of the three-dimensional seismic imaging data body is obtained by conventional seismic data processing; then, the three-dimensional seismic imaging data is scanned along the main survey line and the tie line direction respectively to obtain the apparent dip angles in two directions, and then the angle conversion method proposed in the present invention can be used to convert the apparent dip angles of the main survey line and the tie line to obtain the true dip angle information of the underground structure, and complete the dip angle extraction of all sampling points underground in the three-dimensional work area. It is verified that the extracted main survey line apparent dip angle information and tie line slope information have high stability and high signal-to-noise ratio. Specifically, the following steps are included: step 110, determining the first apparent dip angle of the main survey line direction and the second apparent dip angle of the tie line direction at the target position in the seismic three-dimensional imaging data body; step 120, according to the first apparent dip angle and the second apparent dip angle, the true dip angle of the formation at the target position is determined by a preset dip angle determination model. It has the advantages of high stability of the extracted main survey line apparent dip angle information and tie line slope information and high signal-to-noise ratio.

[0138] Embodiment 3

[0139] This embodiment provides an underground structure dip determination device based on three-dimensional seismic data. This device embodiment can be used to execute the method embodiment of this application. For details not disclosed in this device embodiment, please refer to the method embodiment of this application. Fig.10 A schematic diagram of a structure of an underground structure dip determination device based on three-dimensional seismic data provided in an embodiment of the present application is shown in FIG. Fig.10 As shown, the device 1000 disclosed in this embodiment includes:

[0140] The apparent dip angle determination module 1001 is used to determine a first apparent dip angle in the direction of the main survey line and a second apparent dip angle in the direction of the tie line at a target position in a seismic three-dimensional imaging data volume;

[0141] The formation true dip angle determination module 1002 is used to determine the formation true dip angle at the target position according to the first apparent dip angle and the second apparent dip angle by using a preset dip angle determination model.

[0142] In some embodiments, it further includes: a traversal unit and a determination unit; wherein,

[0143] A traversal unit, used for traversing the value of each imaging data sampling point in the seismic three-dimensional imaging data volume;

[0144] A determination unit is used to determine the true dip of the formation at each imaging data sampling point according to the first apparent dip angle and the second apparent dip angle through a preset dip angle determination model to obtain the azimuth information corresponding to the seismic three-dimensional imaging data volume.

[0145] In some embodiments, a conversion module is further included, which is used to convert the true dip angle of the formation through a preset angle conversion model to obtain the arc information at the underground target position; wherein the preset angle conversion model includes:

[0146]

[0147] Among them, θ(i,j,k) is the true dip of the formation, is the arc corresponding to the true dip of the formation.

[0148] In some embodiments, when both the first apparent inclination angle and the second apparent inclination angle are not less than a preset threshold, the preset inclination angle determination model includes:

[0149]

[0150] Among them, ε is the stability factor, θ x (i,j,k) is the first visual inclination angle, θ y (i,j,k) is the second apparent inclination angle.

[0151] In some embodiments, when the first apparent inclination angle is less than a preset threshold and the second apparent inclination angle is not less than a preset threshold, the preset inclination angle determination model includes:

[0152]

[0153] Among them, ε is the stability factor, θ x (i,j,k) is the first visual inclination angle, θ y (i,j,k) is the second apparent inclination angle.

[0154] In some embodiments, when both the first apparent inclination angle and the second apparent inclination angle are less than a preset threshold, the preset inclination angle determination model includes:

[0155]

[0156] Among them, ε is the stability factor, θ x (i,j,k) is the first visual inclination angle, θ y (i,j,k) is the second apparent inclination angle.

[0157] In some embodiments, when the first apparent inclination angle is not less than a preset threshold and the second apparent inclination angle is less than a preset threshold, the preset inclination angle determination model includes:

[0158]

[0159] Among them, ε is the stability factor, θ x (i,j,k) is the first visual inclination angle, θy (i,j,k) is the second apparent inclination angle.

[0160] It can be understood by those skilled in the art that Fig.10 The structure shown in the figure does not constitute a limitation on the device of the embodiment of the present application, and may include more or fewer modules / units than shown in the figure, or a combination of certain modules / units, or different module / unit arrangements.

[0161] It should be understood by those skilled in the art that the above modules or steps of the present application can be implemented by a general-purpose computing device, and they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices. Optionally, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than herein, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation.

[0162] Technical personnel in the relevant field can clearly understand that, for the convenience and simplicity of description, the specific working process of each module in the underground structure inclination determination device based on three-dimensional seismic data can refer to the corresponding process in the aforementioned method embodiment, and this embodiment will not be repeated here.

[0163] According to the device provided in this embodiment, the true inclination information of the underground structure can be obtained based on the apparent inclination of the main survey line and the apparent inclination of the tie line, and the inclination extraction of all sampling points underground in the three-dimensional work area can be completed. It has the advantages of high stability of the extracted apparent inclination information of the main survey line and the slope information of the tie line, and high signal-to-noise ratio.

[0164] Embodiment 4

[0165] 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, all or part of the steps of the method in the above method embodiment can be implemented:

[0166] Determine a first apparent dip angle in the direction of the main survey line and a second apparent dip angle in the direction of the tie line at a target position in a seismic three-dimensional imaging data volume;

[0167] According to the first apparent dip angle and the second apparent dip angle, the true dip angle of the formation at the target position is determined by a preset dip angle determination model.

[0168] 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.

[0169] Embodiment 5

[0170] 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 method embodiment are implemented:

[0171] Determine a first apparent dip angle in the direction of the main survey line and a second apparent dip angle in the direction of the tie line at a target position in a seismic three-dimensional imaging data volume;

[0172] According to the first apparent dip angle and the second apparent dip angle, the true dip angle of the formation at the target position is determined by a preset dip angle determination model.

[0173] 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.

[0174] Embodiment 6

[0175] This embodiment provides an electronic device. Fig.11 A connection block diagram of an electronic device provided in an embodiment of the present application, such as Fig.11As shown, the electronic device 1100 may include: one or more processors 1101 , a memory 1102 , a multimedia component 1103 , an input / output (I / O) interface 1104 , and a communication component 1105 .

[0176] The one or more processors 1101 are used to execute all or part of the steps in the above method embodiments. The memory 1102 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.

[0177] The memory 1102 may be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as a static random access memory (SRAM), an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a programmable read-only memory (PROM), a read-only memory (ROM), a magnetic storage device, a flash memory, a disk or an optical disk.

[0178] The one or more processors 1101 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 all or part of the steps in the aforementioned method embodiment:

[0179] Determine a first apparent dip angle in the direction of the main survey line and a second apparent dip angle in the direction of the tie line at a target position in a seismic three-dimensional imaging data volume;

[0180] According to the first apparent dip angle and the second apparent dip angle, the true dip angle of the formation at the target position is determined by a preset dip angle determination model.

[0181] The multimedia component 1103 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.

[0182] The I / O interface 1104 provides an interface between one or more processors 1101 and other interface modules, which may be a keyboard, a mouse, buttons, etc. These buttons may be virtual buttons or physical buttons.

[0183] The communication component 1105 is used for wired or wireless communication between the electronic device 1100 and other devices. Wired communication includes communication through a network port, a serial port, etc.; wireless communication includes: Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, 5G, or a combination of one or more of them.

[0184] In summary, the present application provides a method, device, computer-readable storage medium and electronic device for determining the dip angle of underground structures based on three-dimensional seismic data. The method for determining the dip angle of underground structures based on three-dimensional seismic data first obtains data information of a three-dimensional seismic imaging data body through conventional seismic data processing; then, the three-dimensional seismic imaging data is scanned along the main survey line and the tie line direction respectively to obtain the apparent dip angles in two directions, and then the angle conversion method proposed in the present invention can be used to convert the apparent dip angle of the main survey line and the apparent dip angle of the tie line to obtain the true dip angle information of the underground structure, and complete the dip angle extraction of all sampling points underground in the three-dimensional work area. Specifically, the following steps are included: step 110, determining the first apparent dip angle of the main survey line direction and the second apparent dip angle of the tie line direction at the target position in the seismic three-dimensional imaging data body; step 120, according to the first apparent dip angle and the second apparent dip angle, determining the true dip angle of the formation at the target position through a preset dip angle determination model. It has the advantages of high stability of the extracted apparent dip angle information of the main survey line and the slope information of the tie line, and high signal-to-noise ratio.

[0185] 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.

[0186] 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.

[0187] 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.

[0188] Although the embodiments of the present application have been shown and described above, it is 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 based on the scope defined in the attached claims.

Claims

1. A method for determining the dip angle of underground structures based on three-dimensional seismic data, characterized in that: The method comprises: Determine a first apparent dip angle in the direction of the main survey line and a second apparent dip angle in the direction of the tie line at a target position in a seismic three-dimensional imaging data volume; According to the first apparent dip angle and the second apparent dip angle, the true dip angle of the formation at the target position is determined by a preset dip angle determination model.

2. The method for determining the dip angle of underground structures based on three-dimensional seismic data according to claim 1, characterized in that: Also includes: Traversing each imaging data sampling point in the seismic three-dimensional imaging data volume and determining a first apparent dip angle and a second apparent dip angle at each imaging data sampling point; According to the first apparent dip angle and the second apparent dip angle, the true dip angle of the formation at each imaging data sampling point is determined by a preset dip angle determination model to obtain the azimuth information corresponding to the seismic three-dimensional imaging data volume.

3. The method for determining the dip angle of underground structures based on three-dimensional seismic data according to claim 1, characterized in that: Also includes: The true dip angle of the formation is converted by a preset angle conversion model to obtain the arc information at the underground target position; wherein the preset angle conversion model includes: Among them, θ(i,j,k) is the true dip of the formation, is the arc corresponding to the true dip of the formation.

4. The method for determining the dip angle of underground structures based on three-dimensional seismic data according to claim 3, characterized in that: When both the first apparent inclination angle and the second apparent inclination angle are not less than a preset threshold, the preset inclination angle determination model includes: Among them, ε is the stability factor, θ x (i,j,k) is the first visual inclination angle, θ y (i,j,k) is the second apparent inclination angle.

5. The method for determining the dip angle of underground structures based on three-dimensional seismic data according to claim 3, characterized in that: When the first apparent inclination angle is less than a preset threshold and the second apparent inclination angle is not less than a preset threshold, the preset inclination angle determination model includes: Among them, ε is the stability factor, θ x (i,j,k) is the first visual inclination angle, θ y (i,j,k) is the second apparent inclination angle.

6. The method for determining the dip angle of underground structures based on three-dimensional seismic data according to claim 3, characterized in that: When the first apparent inclination angle and the second apparent inclination angle are both less than a preset threshold, the preset inclination angle determination model includes: Among them, ε is the stability factor, θ x (i,j,k) is the first visual inclination angle, θ y (i,j,k) is the second apparent inclination angle.

7. The method for determining the dip angle of underground structures based on three-dimensional seismic data according to claim 3, characterized in that: When the first apparent inclination angle is not less than a preset threshold and the second apparent inclination angle is less than a preset threshold, the preset inclination angle determination model includes: Among them, ε is the stability factor, θ x (i,j,k) is the first visual inclination angle, θ y (i,j,k) is the second apparent inclination angle.

8. A device for determining the dip angle of underground structures based on three-dimensional seismic data, characterized in that: include: An apparent dip angle determination module is used to determine a first apparent dip angle in the direction of the main survey line and a second apparent dip angle in the direction of the tie line at a target position in a seismic three-dimensional imaging data volume; The true dip angle determination module is used to determine the true dip angle of the formation at the target position according to the first apparent dip angle and the second apparent dip angle by using a preset dip angle determination model.

9. A computer-readable storage medium, characterized in that: The computer program stored in the computer-readable storage medium, when executed by one or more processors, implements the method for determining the dip angle of underground structures based on three-dimensional seismic data as described in any one of claims 1 to 7.

10. An electronic device, 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 determining the dip angle of underground structures based on three-dimensional seismic data as described in any one of claims 1 to 7 is implemented.

Images