A method and device for determining the activity intensity of a strike-slip fault

Abstract

This invention discloses a method and apparatus for determining the activity intensity of strike-slip faults, relating to the field of seismic interpretation technology in petroleum exploration. Its main objective is to improve the accuracy of determining the activity intensity of strike-slip faults. The main technical solution includes: selecting a target geological stratum within the strike-slip fault; determining a first thickness variation trend curve corresponding to the target geological stratum in the first block and a second thickness variation trend curve corresponding to the target geological stratum in the second block of the strike-slip fault; comparing the first and second thickness variation trend curves to obtain the cumulative strike-slip displacement of the strike-slip fault; and determining the activity intensity of the strike-slip fault based on the length of the strike-slip fault, the average thickness of the strata within the strike-slip fault, and the cumulative strike-slip displacement, wherein the average thickness of the strata is the average thickness of all strata above the target geological stratum.

Description

Technical Field

[0001] This invention relates to the field of seismic interpretation technology in petroleum exploration, and in particular to a method and apparatus for determining the activity intensity of strike-slip faults. Background Technology

[0002] Strike-slip faults are large-scale strike-slip faults, where the two sides of a fault move relative to each other along the strike of the fault plane. Analyzing the intensity of strike-slip fault activity is of great significance for forward modeling of tectonic evolution, reconstructing paleotectonic morphology, and studying the impact of strike-slip activity on the formation and evolution of a series of basins on both sides of the fault.

[0003] Currently, the intensity of strike-slip fault activity is typically determined based on the strike-slip displacement, with a larger displacement generally indicating stronger activity and vice versa. There are three main methods for calculating strike-slip displacement: First, the geological body correlation method, which uses geological mapping on a large scale to compare the structural deformation characteristics of geological bodies on both sides of the fault zone, thereby determining the relative horizontal displacement. Second, the sandbox simulation method, which estimates strike-slip displacement based on physical simulations using sandboxes. Third, the model method, which uses the principle of constant volume during rigid body shear deformation to mathematically convert extension into strike-slip displacement. The geological point correlation method has limitations in marine applications, and while physical simulation and model methods are constantly being improved, they still differ from actual geological conditions, their simulation conditions limit their applicability, and they have significant errors. Therefore, current methods typically determine strike-slip fault activity intensity based solely on strike-slip displacement, but the significant errors in determining strike-slip displacement lead to low accuracy in determining the activity intensity of strike-slip faults. Summary of the Invention

[0004] In view of this, the present invention proposes a method and apparatus for determining the activity intensity of strike-slip faults, the main purpose of which is to improve the accuracy of determining the activity intensity of strike-slip faults.

[0005] To achieve the above objectives, the present invention mainly provides the following technical solutions:

[0006] In a first aspect, the present invention provides a method for determining the activity intensity of a strike-slip fault, the method comprising:

[0007] Select the target geological horizon within the strike-slip fault;

[0008] Determine the first thickness variation trend curve corresponding to the target geological strata in the first block and the second thickness variation trend curve corresponding to the target geological strata in the second block of the strike-slip fault;

[0009] By comparing the first thickness change trend curve and the second thickness change trend curve, the cumulative strike-slip displacement of the strike-slip fault is obtained;

[0010] The activity intensity of the strike-slip fault is determined based on the length of the strike-slip fault, the average thickness of the strata above the target geological level, and the cumulative strike-slip displacement.

[0011] Secondly, the present invention provides an apparatus for determining the activity intensity of a strike-slip fault, the apparatus comprising:

[0012] Select a cell to select the target geological horizon in a strike-slip fault;

[0013] The first determining unit is used to determine the first thickness variation trend curve corresponding to the target geological stratum in the first block of the strike-slip fault and the second thickness variation trend curve corresponding to the target geological stratum in the second block.

[0014] The comparison unit is used to compare the first thickness change trend curve and the second thickness change trend curve to obtain the cumulative strike-slip displacement of the strike-slip fault.

[0015] The second determining unit is used to determine the activity intensity of the strike-slip fault based on the length of the strike-slip fault, the average thickness of the strata of the strike-slip fault, and the cumulative strike-slip displacement, wherein the average thickness of the strata is the average thickness of all strata above the target geological level.

[0016] Thirdly, the present invention provides a computer-readable storage medium comprising a stored program, wherein, when the program is executed, the device on which the storage medium is located executes the method for determining the activity intensity of a strike-slip fault as described in the first aspect.

[0017] Fourthly, the present invention provides an electronic device, the electronic device comprising:

[0018] Memory, used to store programs;

[0019] A processor, coupled to the memory, is used to run the program to perform the method for determining the activity intensity of a strike-slip fault as described in the first aspect.

[0020] By employing the above technical solution, the method and apparatus for determining the activity intensity of strike-slip faults provided by this invention select a target geological stratum within the strike-slip fault when it is necessary to determine the activity intensity of any strike-slip fault. A first thickness variation trend curve corresponding to the target geological stratum in the first block of the strike-slip fault and a second thickness variation trend curve corresponding to the target geological stratum in the second block are determined. The cumulative strike-slip displacement of the strike-slip fault is obtained by comparing the first and second thickness variation trend curves. Finally, the activity intensity of the strike-slip fault is determined based on the length of the strike-slip fault, the average thickness of the strata in the strike-slip fault, and the cumulative strike-slip displacement. It can be seen that the solution provided by this embodiment statistically analyzes the thickness trend of a geological stratum in both blocks of the strike-slip fault, selecting the thickness trend of one block and the thickness trend of the other block, and performing a similarity analysis by increasing the distance between them. When the similarity is maximized, the increasing distance is the cumulative strike-slip displacement of this geological stratum. Then, the activity intensity of the strike-slip fault is determined based on the length of the strike-slip fault, the average thickness of the strata in the strike-slip fault, and the cumulative strike-slip displacement. Since the determination of strike-slip fault activity intensity takes into account the length of the strike-slip fault, the average thickness of the strike-slip fault strata, and the cumulative strike-slip displacement, the accuracy and reliability of the calculation of strike-slip fault activity intensity can be improved.

[0021] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A flowchart of a method for determining the activity intensity of a strike-slip fault according to an embodiment of the present invention is shown;

[0024] Figure 2 This diagram illustrates a variance slice planar view of a strike-slip fault at location A, provided by an embodiment of the present invention.

[0025] Figure 3 This figure shows a plan view of a strike-slip fault at location A according to an embodiment of the present invention;

[0026] Figure 4The following is an example of the thickness variation trend curves of the left and right sides of the target geological stratum "Dongying Formation" provided in an embodiment of the present invention.

[0027] Figure 5 A graph showing the variation of the Pearson coefficient according to another embodiment of the present invention is shown;

[0028] Figure 6 A schematic diagram of a device for determining the activity intensity of a strike-slip fault according to an embodiment of the present invention is shown;

[0029] Figure 7 A schematic diagram of a device for determining the activity intensity of a strike-slip fault according to an embodiment of the present invention is shown. Detailed Implementation

[0030] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0031] like Figure 1 As shown in the figure, this embodiment of the invention provides a method for determining the activity intensity of a strike-slip fault, which mainly includes:

[0032] 101. Select the target geological strata in the strike-slip fault.

[0033] In practical applications, any strike-slip fault whose activity intensity needs to be determined can be used as the strike-slip fault in this embodiment. After selecting the strike-slip fault whose activity intensity needs to be determined, the strike-slip direction of the strike-slip fault needs to be determined. The strike-slip direction can be determined by the following two methods: one is to directly read the strike-slip direction of the strike-slip fault from a preset area, where the strike-slip direction of the strike-slip fault is stored. The other is to determine the strike-slip direction of the strike-slip fault based on the variance slice and profile characteristics of the strike-slip fault. For example, Figure 2 and Figure 3 As shown, Figure 2 This is a planar view of the variance slice of the strike-slip fault at location A. Figure 3 For corresponding Figure 2 Plan view of strike-slip fault at point A in section A, based on Figure 2 and Figure 3 The strike-slip fault at location A is determined to be right-lateral, thus it is classified as a right-lateral strike-slip fault.

[0034] Strike-slip faults involve multiple geological strata. Each geological stratum corresponds to a specific geological period and has a certain thickness.

[0035] After selecting the strike-slip fault whose activity intensity needs to be determined, it is necessary to identify the target geological strata within the strike-slip fault used to calculate the activity intensity. Methods for selecting the target geological strata within the strike-slip fault include: selecting the first geological stratum corresponding to the geographical location of the strike-slip fault as the target geological stratum, where the first geological stratum is the geological stratum at which the strike-slip fault begins to slip or where the slip is most intense in that geographical location.

[0036] Strike-slip faults located in different geographical locations may have different geological strata at which they begin to strike or where they strike most intensely. Therefore, it is necessary to establish a correspondence between each geographical location and its corresponding first geological stratum in advance. Here, the first geological stratum is the geological stratum at which the strike-slip fault in the geographical location begins to strike or where it strikes most intensely.

[0037] After identifying the strike-slip fault, the first geological stratum corresponding to the geographical location of the strike-slip fault can be directly selected as the target geological stratum within the strike-slip fault, based on the correspondence between the geographical location and the first geological stratum.

[0038] For example, select Figure 3 The target geological stratum is the "Dongying Formation".

[0039] 102. Determine the first thickness variation trend curve corresponding to the target geological stratum in the first block of the strike-slip fault and the second thickness variation trend curve corresponding to the target geological stratum in the second block.

[0040] After determining the target geological strata within the strike-slip fault, it is necessary to determine the first thickness variation trend curve corresponding to the target geological strata in the first block and the second thickness variation trend curve corresponding to the target geological strata in the second block. It should be noted that a strike-slip fault typically includes two blocks: a left block and a right block. In this embodiment, if the first block is the left block, then the second block is the right block. Similarly, if the first block is the right block, then the second block is the left block.

[0041] The following describes the methods for determining the first and second thickness variation trend curves, which include the following two methods:

[0042] The first method for determining the first thickness variation trend curve corresponding to the target geological strata in the first block and the second thickness variation trend curve corresponding to the target geological strata in the second block of a strike-slip fault includes the following steps A1 to A2:

[0043] A1. Select the target interval segment from the strike-slip fault, where the target interval segment is the interval segment in the strike-slip fault with a length equal to the target length.

[0044] When determining the activity intensity of a strike-slip fault, a target segment needs to be selected from the fault to serve as the basis for activity intensity calculation. The purpose of selecting a target segment is twofold: First, strike-slip faults are often long, involving a massive amount of data. Using the entire data set of the strike-slip fault to determine its activity intensity would be computationally intensive. Therefore, to reduce computational burden, a target segment is selected as the basis for activity intensity calculation. Second, strike-slip faults are often long and involve diverse fault characteristics. It is necessary to select the portions that contribute significantly to determining the activity intensity. Therefore, to improve the accuracy of activity intensity calculation, a target segment is selected as the basis for activity intensity calculation.

[0045] The method for selecting the target segment from the strike-slip fault is as follows: based on the straightness of the strike-slip fault, the target segment is selected, where the straightness of the target segment is the highest among the strike-slip faults.

[0046] In practical applications, the stronger the straightness of a strike-slip fault, the more obvious its thickness variation trend curve, and the more accurately it reflects its activity intensity. Therefore, the segment with the highest straightness in the strike-slip fault should be selected as the target segment. Furthermore, it should be noted that the target length should not be less than half the length of the strike-slip fault. If the target length is less than half the length of the strike-slip fault, it includes less data, which is not conducive to accurately determining the activity intensity of the strike-slip fault. Therefore, the target length needs to be at least half the length of the strike-slip fault.

[0047] For example, Figure 2 The straight section is 6.75km long, so the target section is selected for the 6.75km section.

[0048] A2, determine the first thickness variation trend curve corresponding to the target geological stratum in the first block and the second thickness variation trend curve corresponding to the target geological stratum in the second block within the target interval.

[0049] In this embodiment, when the first disc is the left disc, the second disc is the right disc. Similarly, when the first disc is the right disc, the second disc is the left disc.

[0050] The first thickness variation trend curve corresponding to the target geological strata in the first block of the target interval is a thickness variation trend curve from top to bottom or from bottom to top for the target geological strata at multiple locations within the target interval. Similarly, the second thickness variation trend curve corresponding to the target geological strata in the second block of the target interval is a thickness variation trend curve from top to bottom or from bottom to top for the target geological strata at multiple locations within the target interval.

[0051] The second method for determining the first thickness variation trend curve corresponding to the target geological stratum in the first block and the second thickness variation trend curve corresponding to the target geological stratum in the second block of a strike-slip fault includes: determining the first thickness variation trend curve corresponding to the target geological stratum in the first block and the second thickness variation trend curve corresponding to the target geological stratum in the second block of a strike-slip fault.

[0052] This method determines the first thickness variation trend curve based on all data corresponding to the target geological strata in the first block of a strike-slip fault, and similarly determines the second thickness variation trend curve based on all data corresponding to the target geological strata in the second block of a strike-slip fault. Because it uses complete data corresponding to the target geological strata, it allows for a more comprehensive assessment of the activity intensity of the strike-slip fault.

[0053] For example, such as Figure 4 As shown, Figure 4 The thickness variation trend curves of the left and right sides of the target geological stratum "Dongying Formation".

[0054] 103. By comparing the first thickness change trend curve and the second thickness change trend curve, the cumulative strike-slip displacement of the strike-slip fault can be obtained.

[0055] The cumulative strike-slip displacement of the strike-slip fault is obtained based on a comparison of the first thickness variation trend curve and the second thickness variation trend curve. The specific process of obtaining the cumulative strike-slip displacement of the strike-slip fault by comparing the first thickness variation trend curve and the second thickness variation trend curve includes the following steps B1 to B4:

[0056] B1 divides the first and second sections at equal intervals, forming multiple first sections corresponding to the first section and multiple second sections corresponding to the second section.

[0057] To more accurately determine the cumulative strike-slip displacement of the strike-slip fault, the first and second blocks need to be divided at equal intervals. After division, the first block will be divided into multiple first segments, and the second block will be divided into multiple second segments. It should be noted that, for the purpose of a unified comparison benchmark, all first and second segments are of the same length.

[0058] B2, based on the strike-slip direction of the strike-slip fault, perform the following for each first segment: compare the curve corresponding to the first segment in the first thickness variation trend curve with the curve corresponding to each second segment in the second thickness variation trend curve to obtain the similarity between the first segment and each second segment.

[0059] After selecting a strike-slip fault whose activity intensity needs to be determined, it is necessary to clarify the strike-slip direction of the strike-slip fault and determine whether the strike-slip fault is a left-lateral strike-slip fault or a right-lateral strike-slip fault based on the strike-slip direction.

[0060] For example, the first disc is the right disc, and the first segment consists entirely of segments from the right disc; the second disc is the left disc, and the second segment consists entirely of segments from the left disc. Each segment in the right disc is compared to each segment in the left disc in a rightward direction. Specifically, for each first segment, the curve corresponding to the first segment in the first thickness change trend curve is compared with the curve corresponding to each second segment in the second thickness change trend curve to obtain the similarity between the first segment and each second segment.

[0061] The curves corresponding to the first segment in the first thickness variation trend curve are respectively associated with each of the second segments.

[0062] The specific process of comparing the curve corresponding to the first segment in the second thickness change trend curve to obtain the similarity between the first segment and each second segment is as follows: calculate the Pearson coefficient between the curve corresponding to the first segment in the first thickness change trend curve and the curve corresponding to each second segment in the second thickness change trend curve.

[0063] The Pearson coefficient C is a statistical indicator that reflects the degree of similarity between variables. It is calculated using the product-moment method, which also uses the deviations of two variables from their respective means as a basis. The product of these two deviations reflects the degree of similarity between the two variables, as shown in the following formula:

[0064]

[0065] Among them, A a For the first section of the first set, B b For the b-th second section of the second set, x i For the i-th thickness in the a-th first segment, Let y be the average thickness in the a-th first segment. j For the j-th thickness in the b-th second segment, C(A) is the average thickness in the b-th second segment. a B b ) represents the Pearson coefficient between the a-th first segment and the b-th second segment.

[0066] The Pearson coefficient C ranges from -1 to 1. According to statistical principles, a C value closer to 1 indicates greater similarity between the two calculated sections, and vice versa. Since the thickness trends of the two strata are often most similar before displacement, the calculated C value should theoretically exhibit a normal distribution. However, due to errors and other factors, local anomalies in C values ​​may exist, and in practice, the C value should be analyzed in conjunction with the geological context.

[0067] B3 selects the second segment with the highest similarity as the target second segment.

[0068] The second segment corresponding to the highest similarity in the obtained similarity scores can be relative to the first segment before the shift, meaning they are located in the same position. Therefore, the second segment corresponding to the highest similarity score is selected as the target second segment.

[0069] For example, such as Figure 5 As shown, the Pearson coefficient is 0.84, so the second segment corresponding to 0.84 is selected as the target second segment.

[0070] B4. The cumulative slip displacement is determined based on the distance between the target second segment and the first segment corresponding to the target second segment.

[0071] The second segment corresponding to the highest similarity in the obtained similarity scores can be relative to the first segment before the slippage, meaning they were located at the same position. Therefore, the difference in distance between the two is the cumulative slippage displacement.

[0072] When determining the cumulative slip displacement, reference points can be located in the target second segment and the corresponding first segment, with the distance between these reference points representing the cumulative slip displacement. These reference points can be the midpoints of each segment.

[0073] 104. Based on the length of the strike-slip fault, the average thickness of the strata in the strike-slip fault, and the cumulative strike-slip displacement, determine the activity intensity of the strike-slip fault, where the average thickness of the strata is the average thickness of all strata above the target geological level.

[0074] Based on the length of the strike-slip fault, the average thickness of the formation within the strike-slip fault, and the cumulative strike-slip displacement, the activity intensity of the strike-slip fault is determined using the following formula:

[0075]

[0076] Where P is the activity intensity of the strike-slip fault, L is the length of the strike-slip fault, H is the average thickness of the formation of the strike-slip fault, and S is the cumulative strike-slip displacement.

[0077] The thicker the average strata of a strike-slip fault, the greater the restriction on its activity, and the lower its activity intensity. Therefore, in the above formula, the average strata thickness of a strike-slip fault is inversely proportional to its activity intensity. Similarly, the longer the strike-slip fault, the greater the restriction on its activity, and the lower its activity intensity. Thus, in the above formula, the length of a strike-slip fault is inversely proportional to its activity intensity. Finally, the greater the cumulative strike-slip displacement of a strike-slip fault, the stronger its activity. Therefore, in the above formula, the cumulative strike-slip displacement is directly proportional to its activity intensity.

[0078] Once the activity intensity of a strike-slip fault is determined, the decision-making process for oil exploration along the strike-slip fault can be guided by the activity intensity.

[0079] The method for determining the activity intensity of strike-slip faults provided in this embodiment of the invention selects a target geological stratum within the strike-slip fault when determining the activity intensity of any strike-slip fault. It then determines a first thickness variation trend curve corresponding to the target geological stratum in the first block of the strike-slip fault and a second thickness variation trend curve corresponding to the target geological stratum in the second block. The cumulative strike-slip displacement of the strike-slip fault is obtained by comparing the first and second thickness variation trend curves. Finally, the activity intensity of the strike-slip fault is determined based on the length of the strike-slip fault, the average thickness of the strata within the strike-slip fault, and the cumulative strike-slip displacement. It can be seen that the scheme provided in this embodiment of the invention statistically analyzes the thickness trend of a geological stratum in both blocks of the strike-slip fault, selecting the thickness trend of one block and the thickness trend of the other block, and performing a similarity analysis by increasing the distance between them. When the similarity is maximized, the increasing distance is the cumulative strike-slip displacement of this geological stratum. Then, the activity intensity of the strike-slip fault is determined based on the length of the strike-slip fault, the average thickness of the strata within the strike-slip fault, and the cumulative strike-slip displacement. Since the determination of strike-slip fault activity intensity takes into account the length of the strike-slip fault, the average thickness of the strike-slip fault strata, and the cumulative strike-slip displacement, the accuracy and reliability of the calculation of strike-slip fault activity intensity can be improved.

[0080] Furthermore, based on the above method embodiments, another embodiment of the present invention also provides a device for determining the activity intensity of a strike-slip fault, such as... Figure 6 As shown, the device includes:

[0081] Selecting unit 31 is used to select the target geological stratum in the strike-slip fault;

[0082] The first determining unit 32 is used to determine the first thickness variation trend curve corresponding to the target geological stratum in the first block of the strike-slip fault and the second thickness variation trend curve corresponding to the target geological stratum in the second block.

[0083] Comparison unit 33 is used to compare the first thickness change trend curve and the second thickness change trend curve to obtain the cumulative strike-slip displacement of the strike-slip fault;

[0084] The second determining unit 34 is used to determine the activity intensity of the strike-slip fault based on the length of the strike-slip fault, the average thickness of the strata of the strike-slip fault, and the cumulative strike-slip displacement, wherein the average thickness of the strata is the average thickness of all strata above the target geological level.

[0085] The device for determining the activity intensity of a strike-slip fault provided in this embodiment of the invention selects a target geological stratum within the strike-slip fault when it is necessary to determine the activity intensity of any strike-slip fault. It then determines a first thickness variation trend curve corresponding to the target geological stratum in the first block of the strike-slip fault and a second thickness variation trend curve corresponding to the target geological stratum in the second block. The cumulative strike-slip displacement of the strike-slip fault is obtained by comparing the first and second thickness variation trend curves. Finally, the activity intensity of the strike-slip fault is determined based on the length of the strike-slip fault, the average thickness of the strata within the strike-slip fault, and the cumulative strike-slip displacement. It can be seen that the solution provided in this embodiment of the invention statistically analyzes the thickness trend of a geological stratum in both blocks of the strike-slip fault, selecting the thickness trend of one block and the thickness trend of the other block, and performing a similarity analysis by increasing the distance between them. When the similarity is maximized, the increasing distance is the cumulative strike-slip displacement of this geological stratum. Then, the activity intensity of the strike-slip fault is determined based on the length of the strike-slip fault, the average thickness of the strata within the strike-slip fault, and the cumulative strike-slip displacement. Since the determination of strike-slip fault activity intensity takes into account the length of the strike-slip fault, the average thickness of the strike-slip fault strata, and the cumulative strike-slip displacement, the accuracy and reliability of the calculation of strike-slip fault activity intensity can be improved.

[0086] Optional, such as Figure 7 As shown, the second determining unit 34 has a function for determining the activity intensity of the strike-slip fault based on the length of the strike-slip fault, the average thickness of the formation of the strike-slip fault, and the cumulative strike-slip displacement, using the following formula:

[0087]

[0088] Wherein, P is the activity intensity of the strike-slip fault, L is the length of the strike-slip fault, H is the average formation thickness of the strike-slip fault, and S is the cumulative strike-slip displacement.

[0089] Optional, such as Figure 7 As shown, the selection unit 31 is specifically used to select the first geological stratum corresponding to the geographical location of the strike-slip fault as the target geological stratum, wherein the first geological stratum is the geological stratum where the strike-slip fault begins to strike or where the strike-slip is most intense in the geographical location.

[0090] Optional, such as Figure 7 As shown, the first determining unit 32 includes:

[0091] The first selection module 321 is used to select a target interval segment from the strike-slip fault, wherein the target interval segment is an interval segment in the strike-slip fault with a length of a target length;

[0092] The first determining module 322 is used to determine the first thickness variation trend curve corresponding to the target geological stratum of the first plate and the second thickness variation trend curve corresponding to the target geological stratum of the second plate in the target interval segment.

[0093] Optional, such as Figure 7 As shown, module 321 is specifically used to select the target interval segment based on the straightness of the strike-slip fault, wherein the straightness of the target interval segment is the highest among the strike-slip faults.

[0094] Optional, such as Figure 7 As shown, the target length of the target interval segment selected by the selection module 321 is not less than half the length of the strike-slip fault.

[0095] Optional, such as Figure 7 As shown, the comparison unit 33 includes:

[0096] The partitioning module 331 is used to partition the first disk and the second disk at equal intervals to form multiple first segments corresponding to the first disk and multiple second segments corresponding to the second disk;

[0097] The comparison module 332 is used to perform the following for each first segment based on the strike-slip direction of the strike-slip fault: compare the curve corresponding to the first segment in the first thickness change trend curve with the curve corresponding to each second segment in the second thickness change trend curve to obtain the similarity between the first segment and each second segment.

[0098] The second selection module 333 is used to select the second segment corresponding to the highest similarity as the target second segment;

[0099] The second determining module 334 is used to determine the cumulative slip displacement based on the distance between the target second segment and the first segment corresponding to the target second segment.

[0100] Optional, such as Figure 7As shown, the comparison module 332 is specifically used to calculate the Pearson coefficient between the curve corresponding to the first segment in the first thickness change trend curve and the curve corresponding to each second segment in the second thickness change trend curve, so as to obtain the Pearson coefficient between the first segment and each second segment.

[0101] For a detailed explanation of the methods used in the operation of each functional module in the device for determining the activity intensity of a strike-slip fault provided in this embodiment of the invention, please refer to the corresponding method details in the above embodiment of the method for determining the activity intensity of a strike-slip fault, which will not be repeated here.

[0102] Furthermore, according to the above embodiments, another embodiment of the present invention also provides a computer-readable storage medium, the storage medium including a stored program, wherein, when the program is executed, it controls the device where the storage medium is located to execute the above-described method for determining the intensity of strike-slip fault activity.

[0103] Furthermore, according to the above embodiments, another embodiment of the present invention also provides an electronic device, the electronic device comprising:

[0104] Memory, used to store programs;

[0105] A processor, coupled to the memory, is used to run the program to perform the method described above for determining the intensity of strike-slip fault activity.

[0106] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0107] It is understood that the relevant features in the above methods and apparatus can be referenced interchangeably. Furthermore, the terms "first," "second," etc., in the above embodiments are used to distinguish between embodiments and do not represent the superiority or inferiority of any particular embodiment.

[0108] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0109] The algorithms and displays provided herein are not inherently related to any particular computer, virtual system, or other device. Various general-purpose systems can also be used in conjunction with the teachings herein. The required structure for constructing such systems is apparent from the above description. Furthermore, this invention is not directed to any particular programming language. It should be understood that the contents of the invention described herein can be implemented using various programming languages, and the above description of specific languages ​​is for the purpose of disclosing the best mode of implementation of the invention.

[0110] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0111] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features but not others included in other embodiments, combinations of features from different embodiments are intended to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments can be used in any combination.

[0112] The various component embodiments of the present invention can be implemented in hardware, or as software modules running on one or more processors, or a combination thereof. Those skilled in the art will understand that microprocessors or digital signal processors (DSPs) can be used in practice to implement some or all of the functions of some or all of the components in the method and framework for determining the activity intensity of strike-slip faults according to embodiments of the present invention. The present invention can also be implemented as a device or apparatus program (e.g., a computer program and computer program product) for performing part or all of the methods described herein. Such programs implementing the present invention can be stored on a computer-readable medium or can be in the form of one or more signals. Such signals can be downloaded from an Internet website, provided on a carrier signal, or provided in any other form.

[0113] It should be noted that the above embodiments are illustrative of the invention and not restrictive, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

Claims

1. A method for determining the activity intensity of a strike-slip fault, characterized in that, The method comprises: selecting a target geological horizon in a strike-slip fault; selecting a target geological horizon in a strike-slip fault, comprising: selecting a first geological horizon corresponding to a geographical position where the strike-slip fault is located as the target geological horizon, wherein the first geological horizon is the geological horizon where the strike-slip fault starts to slip or slips most intensely in the geographical position; determining a first thickness variation trend curve corresponding to the target geological horizon of the first disc in the strike-slip fault and a second thickness variation trend curve corresponding to the target geological horizon of the second disc; determining a first thickness variation trend curve corresponding to the target geological horizon of the first disc in the strike-slip fault and a second thickness variation trend curve corresponding to the target geological horizon of the second disc, comprising: selecting a target interval segment from the strike-slip fault, wherein the target interval segment is an interval segment with a target length in the strike-slip fault; determining a first thickness variation trend curve corresponding to the target geological horizon of the first disc and a second thickness variation trend curve corresponding to the target geological horizon of the second disc in the target interval segment; selecting a target interval segment from the strike-slip fault, comprising: selecting the target interval segment based on the flatness of the strike-slip fault, wherein the flatness of the target interval segment is the highest in the strike-slip fault; the target length is not less than half of the length of the strike-slip fault; comparing the first thickness variation trend curve and the second thickness variation trend curve to obtain the cumulative strike-slip displacement of the strike-slip fault; comparing the first thickness variation trend curve and the second thickness variation trend curve to obtain the cumulative strike-slip displacement of the strike-slip fault, comprising: equally spacing the first disc and the second disc to form a plurality of first segments corresponding to the first disc and a plurality of second segments corresponding to the second disc; based on the strike-slip direction of the strike-slip fault, for each first segment, performing: comparing the curve corresponding to the first segment in the first thickness variation trend curve with the curve corresponding to each second segment in the second thickness variation trend curve to obtain the similarity between the first segment and each second segment; selecting the second segment corresponding to the maximum similarity as the target second segment; determining the cumulative strike-slip displacement based on the distance between the target second segment and the first segment corresponding to the target second segment; determining the activity intensity of the strike-slip fault based on the length of the strike-slip fault, the average thickness of the strata of the strike-slip fault, and the cumulative strike-slip displacement, wherein the average thickness of the strata is the average thickness of all strata above the target geological horizon; determining the activity intensity of the strike-slip fault based on the length of the strike-slip fault, the average thickness of the strata of the strike-slip fault, and the cumulative strike-slip displacement, comprising: determining the activity intensity of the strike-slip fault based on the length of the strike-slip fault, the average thickness of the strata of the strike-slip fault, and the cumulative strike-slip displacement by the following formula: Wherein, P is the activity intensity of the strike-slip fault, L is the length of the strike-slip fault, H is the average thickness of the stratum of the strike-slip fault, and S is the cumulative strike-slip displacement.

2. The method of claim 1, wherein, The curve corresponding to the first section in the first thickness variation trend curve is compared with the curve corresponding to each second section in the second thickness variation trend curve respectively to obtain the similarity between the first section and each second section, including: The curve corresponding to the first section in the first thickness variation trend curve is compared with the curve corresponding to each second section in the second thickness variation trend curve respectively to obtain the similarity between the first section and each second section, including:

3. A device for determining the intensity of strike-slip fault activity, characterized in that The device comprises: The selecting unit is configured to select a target geological horizon in the strike-slip fault, and the selecting the target geological horizon in the strike-slip fault comprises: selecting a first geological horizon corresponding to a geographical position of the strike-slip fault as the target geological horizon, wherein the first geological horizon is a geological horizon at which the strike-slip fault starts to slip or slips most intensely in the geographical position; The first determining unit is configured to determine a first thickness variation trend curve corresponding to the target geological horizon of the first panel and a second thickness variation trend curve corresponding to the target geological horizon of the second panel in the strike-slip fault, and the determining the first thickness variation trend curve corresponding to the target geological horizon of the first panel and the second thickness variation trend curve corresponding to the target geological horizon of the second panel in the strike-slip fault comprises: selecting a target interval segment from the strike-slip fault, wherein the target interval segment is an interval segment with a target length in the strike-slip fault; determining the first thickness variation trend curve corresponding to the target geological horizon of the first panel and the second thickness variation trend curve corresponding to the target geological horizon of the second panel in the target interval segment; and selecting the target interval segment from the strike-slip fault comprises: selecting the target interval segment based on the flatness of the strike-slip fault, wherein the target interval segment has the highest flatness in the strike-slip fault; and the target length is not less than half of the length of the strike-slip fault. The comparison unit is configured to compare the first thickness variation trend curve and the second thickness variation trend curve to obtain a cumulative strike-slip displacement amount of the strike-slip fault, and to compare the first thickness variation trend curve and the second thickness variation trend curve to obtain the cumulative strike-slip displacement amount of the strike-slip fault, including: dividing the first disc and the second disc at equal intervals to form a plurality of first segments corresponding to the first disc and a plurality of second segments corresponding to the second disc; based on a strike-slip direction of the strike-slip fault, performing the following operations on each of the first segments: comparing a curve corresponding to the first segment in the first thickness variation trend curve with a curve corresponding to each of the second segments in the second thickness variation trend curve to obtain a similarity between the first segment and each of the second segments; selecting a second segment corresponding to the maximum similarity as a target second segment; and determining the cumulative strike-slip displacement amount based on a distance between the target second segment and a first segment corresponding to the target second segment. The second determining unit is configured to determine an activity intensity of the strike-slip fault based on a length of the strike-slip fault, an average thickness of a stratum of the strike-slip fault, and the cumulative strike-slip displacement amount, wherein the average thickness of the stratum is an average thickness of all strata located above the target geologic horizon; and to determine the activity intensity of the strike-slip fault based on the length of the strike-slip fault, the average thickness of the stratum of the strike-slip fault, and the cumulative strike-slip displacement amount, including: determining the activity intensity of the strike-slip fault based on the length of the strike-slip fault, the average thickness of the stratum of the strike-slip fault, and the cumulative strike-slip displacement amount by using the following formula: wherein P is the activity intensity of the strike-slip fault, L is the length of the strike-slip fault, H is the average thickness of the stratum of the strike-slip fault, and S is the cumulative strike-slip displacement amount.

4. A computer-readable storage medium, characterized in that, The storage medium includes a stored program, wherein the program, when executed, controls a device in which the storage medium is located to perform the method for determining the activity intensity of the strike-slip fault according to any one of claims 1 to 2.

5. An electronic device, comprising: The electronic device includes: a memory configured to store a program; a processor coupled to the memory and configured to execute the program to perform the method for determining the activity intensity of the strike-slip fault according to any one of claims 1 to 2.

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