Method and device for judging fault tendency and transverse abrupt change point
By integrating the seismic coherence properties of multiple sets of formations, different fault tendencies of faults in the horizontal direction and judging the lateral mutation points, the accuracy of fault tendencies and lateral change analysis in the existing technology is solved, and the accuracy and economic value of oil and gas exploration and development are improved.
Patent Information
- Application Number
- CN202311584866.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-24
- Publication Date
- 2025-05-27
AI Technical Summary
It is difficult for the prior art to accurately and quickly analyze fault tendencies and lateral changes, resulting in failure to implement traps related to faults during oil and gas exploration and development, resulting in failure.
By obtaining multiple sets of different strata that are in the vertical direction of the same fault, and combining the seismic coherence properties of multiple sets of strata, the comprehensive seismic coherence properties of the fault are obtained, and then the multiple different fault tendencies corresponding to the fault are determined, and the intersection of multiple different fault tendencies is determined as the lateral mutation point of the fault.
It improves the accuracy of judging fault tendencies and lateral mutation points, helps oil and gas exploration and development to understand the structural traps and fault block traps of faults more accurately, and reduces development risks.
Smart Images
Figure CN120044601A_ABST
Abstract
Description
Technical Field
[0001] The embodiments of this specification relate to the field of fault analysis, and in particular, to a method and device for discriminating fault trends and lateral mutation points. Background Art
[0002] The lateral variation property of the fault trend along the strike is an important parameter for structural traps and fault block traps in oil and gas exploration and development. The existing common methods are manual picking or automatic discrimination for a single profile. There is currently no research on directly and accurately analyzing the fault trend and lateral variation from a plane, resulting in the non - implementation of fault - related traps when constructing maps of the target layer for oil and gas exploration, and causing the failure of oil and gas exploration and development. Moreover, the lateral variation of the fault trend has an important impact on the sealing property and gas - water relationship on both sides of the fault. Therefore, how to accurately judge the fault trend and its lateral mutation points has important significance and economic value for oil and gas exploration and development.
[0003] There is an urgent need for a method for discriminating fault trends and lateral mutation points, which can improve the accuracy of judging fault trends and lateral mutation points. Summary of the Invention
[0004] The purpose of the embodiments of this specification is to provide a method and device for discriminating fault trends and lateral mutation points to improve the accuracy of judging fault trends and lateral mutation points.
[0005] To achieve the above - mentioned purpose, on the one hand, the embodiments of this specification provide a method for discriminating fault trends and lateral mutation points, including:
[0006] Obtain multiple sets of different strata vertically offset by the same fault;
[0007] Integrate the seismic coherence attributes of each of the multiple sets of strata to obtain the comprehensive seismic coherence attribute of the fault;
[0008] Based on the comprehensive seismic coherence attribute of the fault, obtain multiple different fault trends corresponding to the fault in the lateral direction;
[0009] Determine the intersection of the multiple different fault trends as the lateral mutation point of the fault.
[0010] Preferably, the step of integrating the seismic coherence attributes of each of the multiple sets of strata to obtain the comprehensive seismic coherence attribute of the fault further includes:
[0011] According to the seismic coherence attribute values of each of the multiple sets of strata, respectively obtain the seismic coherence attribute maps of each of the multiple sets of strata;
[0012] Overlay the seismic coherence attribute maps of each of the multiple sets of strata in a unified coordinate system to obtain the comprehensive seismic coherence attribute map of the fault.
[0013] Preferably, obtaining multiple different fault dips corresponding to the fault in the lateral direction according to the comprehensive seismic coherence attributes of the fault further includes:
[0014] Obtaining different positional relationships between multiple sets of strata at different positions in the lateral direction of the fault according to the comprehensive seismic coherence attribute map of the fault;
[0015] Combining the relative movement direction of both sides of the fault and the different positional relationships between the multiple sets of strata to determine multiple different fault dips corresponding to the fault in the lateral direction.
[0016] Preferably, combining the relative movement direction of both sides of the fault and the different positional relationships between the multiple sets of strata to determine multiple different fault dips corresponding to the fault in the lateral direction further includes:
[0017] Determining whether the fault is a normal fault or a reverse fault according to the relative movement direction of both sides of the fault;
[0018] Based on the fact that the fault is a normal fault or a reverse fault, determining multiple different fault dips corresponding to the fault in the lateral direction according to the positional relationship of the uppermost layer or the lowermost layer in the multiple sets of strata relative to other strata at different positions in the lateral direction of the fault.
[0019] Preferably, based on the fact that the fault is a normal fault or a reverse fault, determining multiple different fault dips corresponding to the fault in the lateral direction according to the positional relationship of the uppermost layer or the lowermost layer in the multiple sets of strata relative to other strata at different positions in the lateral direction of the fault further includes:
[0020] If the fault is a reverse fault, determining multiple different fault dips corresponding to the fault in the lateral direction according to the positional relationship of the lowermost layer in the multiple sets of strata relative to other strata at different positions in the lateral direction of the fault;
[0021] If the fault is a normal fault, determining multiple different fault dips corresponding to the fault in the lateral direction according to the positional relationship of the uppermost layer in the multiple sets of strata relative to other strata at different positions in the lateral direction of the fault.
[0022] Preferably, determining multiple different fault dips corresponding to the fault in the lateral direction according to the positional relationship of the lowermost layer in the multiple sets of strata relative to other strata at different positions in the lateral direction of the fault further includes:
[0023] Determining the direction in which the lowermost layer in the multiple sets of strata is far from other strata at different positions in the lateral direction of the fault as multiple different fault dips corresponding to the fault in the lateral direction.
[0024] Preferably, determining multiple different fault dips corresponding to the fault in the transverse direction according to the positional relationship of the uppermost layer in the multiple sets of strata relative to other strata at different positions in the transverse direction of the fault further includes:
[0025] Determining the directions in which the uppermost layer in the multiple sets of strata is away from other strata at different positions in the transverse direction of the fault as the multiple different fault dips corresponding to the fault in the transverse direction.
[0026] Preferably, the method for determining different positions in the transverse direction of the fault includes:
[0027] Selecting a position point at a set distance interval in the transverse direction of the fault to obtain multiple different positions in the transverse direction of the fault.
[0028] Preferably, the multiple sets of different strata vertically offset by the same fault further include: three sets of different strata vertically offset by the same fault.
[0029] On the other hand, an embodiment of this specification provides a device for discriminating fault dip and lateral mutation points, and the device includes:
[0030] An acquisition module, configured to acquire multiple sets of different strata vertically offset by the same fault;
[0031] A comprehensive module, configured to comprehensively analyze the seismic coherence attributes of each of the multiple sets of strata to obtain the comprehensive seismic coherence attribute of the fault;
[0032] A dip determination module, configured to obtain multiple different fault dips corresponding to the fault in the transverse direction according to the comprehensive seismic coherence attribute of the fault;
[0033] A mutation point determination module, configured to determine the intersection of the multiple different fault dips as the lateral mutation point of the fault.
[0034] On another aspect, an embodiment of this specification also provides a computer device, including a memory, a processor, and a computer program stored on the memory. When the computer program is run by the processor, it executes the instructions of the method according to any one of the above.
[0035] On yet another aspect, an embodiment of this specification also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is run by the processor of a computer device, it executes the instructions of the method according to any one of the above.
[0036] As can be seen from the technical solutions provided in the embodiments of this specification above, through the method of the embodiments of this specification, multiple different fault dips in the lateral direction of the fault can be obtained based on the comprehensive seismic coherence attributes of the obtained fault, and then the intersection of the multiple different fault dips can be determined as the lateral mutation point of the fault. Compared with the prior art methods of manually picking or automatically discriminating the fault dip for a single profile, it can more accurately judge the fault dip and its lateral mutation point, providing assistance for oil and gas exploration and development.
[0037] To make the above and other purposes, features, and advantages of this specification more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, makes the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0038] To more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of this specification. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0039] Figure 1 FIG. shows a schematic flow chart of a method for discriminating fault dip and lateral mutation point provided by the embodiments of this specification;
[0040] Figure 2 FIG. shows a schematic flow chart of obtaining the comprehensive seismic coherence attributes of a fault by integrating the seismic coherence attributes of multiple sets of strata;
[0041] Figure 3 FIG. shows a schematic flow chart of obtaining multiple different fault dips corresponding to a fault in the lateral direction based on the comprehensive seismic coherence attributes of the fault;
[0042] Figure 4 FIG. shows a schematic flow chart of determining multiple different fault dips corresponding to a fault in the lateral direction by integrating the relative movement direction of both sides of the fault and different positional relationships between multiple sets of strata;
[0043] Figure 5 FIG. shows a schematic flow chart of determining multiple different fault dips corresponding to a fault in the lateral direction based on whether the fault is a normal fault or a reverse fault;
[0044] Figure 6 FIG. shows a schematic module structure diagram of a device for discriminating fault dip and lateral mutation point provided by the embodiments of this specification;
[0045] Figure 7Shows a schematic structural diagram of a computer device provided by an embodiment of this specification;
[0046] Figure 8 Shows a comprehensive coherence attribute map after superimposing seismic coherence attribute maps of multiple sets of strata provided by an embodiment of this specification;
[0047] Figure 9 Shows schematic diagrams of multiple different fault dips corresponding horizontally shown by a reverse fault provided by an embodiment of this specification.
[0048] Explanation of the attached drawing symbols:
[0049] 100, acquisition module;
[0050] 200, comprehensive module;
[0051] 300, dip determination module;
[0052] 400, mutation point determination module;
[0053] 702, computer device;
[0054] 704, processor;
[0055] 706, memory;
[0056] 708, drive mechanism;
[0057] 710, input / output module;
[0058] 712, input device;
[0059] 714, output device;
[0060] 716, presentation device;
[0061] 718, graphical user interface;
[0062] 720, network interface;
[0063] 722, communication link;
[0064] 724, communication bus. Detailed implementation manners
[0065] Next, the technical solutions in the embodiments of this specification will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this specification. Obviously, the described embodiments are only a part of the embodiments of this specification, rather than all the embodiments. Based on the embodiments in this specification, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the embodiments of this specification.
[0066] The lateral variation property of the fault dip along the strike is an important parameter for structural traps and fault block traps in oil and gas exploration and development. The existing common methods are manual picking or automatic discrimination for a single profile. There is currently no research on how to directly and accurately analyze the fault dip and its lateral variation on the plane, resulting in the non - implementation of fault - related traps during the structural mapping of the target layer in oil and gas exploration, causing the failure of oil and gas exploration and development. Moreover, the lateral variation of the fault dip has an important impact on the sealing property and gas - water relationship on both sides of the fault. Therefore, how to accurately judge the fault dip and its lateral mutation points has important significance and economic value for oil and gas exploration and development.
[0067] To solve the above problems, the embodiments of this specification provide a method for discriminating the fault dip and lateral mutation points. Figure 1 It is a schematic flowchart of a method for discriminating the fault dip and lateral mutation points provided by the embodiments of this specification. This specification provides the method operation steps as described in the embodiments or flowcharts, but based on routine or non - creative labor, it may include more or fewer operation steps. The step order listed in the embodiments is only one way among the execution orders of numerous steps and does not represent the only execution order. When the actual system or device product executes, it can be executed in the order of the method shown in the embodiments or the drawings, or executed in parallel.
[0068] It should be noted that the terms "first", "second", etc. in the specification, claims, and the above - mentioned drawings of the embodiments of this specification are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of this specification described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non - exclusive inclusion. For example, a process, method, device, product, or equipment that includes a series of steps or units does not necessarily have to be limited to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or equipment.
[0069] Referring to Figure 1 , the embodiments of this specification provide a method for discriminating the fault dip and lateral mutation points, including:
[0070] S101: Obtain multiple sets of different strata vertically offset by the same fault;
[0071] S102: Synthesize the seismic coherence attributes of each set of strata to obtain the comprehensive seismic coherence attribute of the fault;
[0072] S103: Obtain multiple different fault dips corresponding to the fault in the lateral direction according to the comprehensive seismic coherence attribute of the fault;
[0073] S104: Determine the intersection of the multiple different fault dips as the lateral mutation point of the fault.
[0074] A fault is a structure where the crust is stressed and fractured, and significant relative displacement occurs between rock blocks on both sides of the fracture plane. The same fault may vertically offset multiple sets of different strata. Each set of strata has its formation era or age, and is a rock layer with unified characteristics and attributes, significantly different from the upper and lower layers. When obtaining multiple sets of different strata, there is no limit on the number of strata, but preferably select the strata with strong amplitude energy in the seismic data, as such strata are easier to contrast and trace.
[0075] Although there is no limit on the number of strata, it is preferred that the same fault vertically offsets three sets of different strata. The reason is as follows: If two sets of strata less than three sets of different strata are used, the upper and lower parts of the two sets of strata may be offset by different faults, and different faults may be misjudged as the same fault. Especially when the distance between the two sets of strata is large, this situation is more likely to occur. Having an additional reference layer in the middle can reduce this error. If more than three sets of different strata are used, the calculation efficiency decreases. Therefore, three sets of different strata have higher accuracy and better efficiency.
[0076] Seismic coherence attributes can be used to describe the discontinuity characteristics of seismic data, thereby effectively identifying faults. Based on the comprehensive seismic coherence attributes of the fault, multiple different fault dips corresponding to the fault in the lateral direction can be obtained. The fault dips corresponding to the fault in the lateral direction can include multiple ones. For example, the fault dip first goes to the southeast, then to the northwest, and then to the southeast. Determine the intersection of the multiple different fault dips as the lateral mutation point of the fault. The lateral mutation point refers to the change point of the fault dip. For example, the fault dip first goes to the southeast, then to the northwest, and there is a lateral mutation point between the two dips of southeast and northwest. After passing through this lateral mutation point, the fault dip changes.
[0077] Through the method of the embodiments of this specification, based on the obtained comprehensive seismic coherence attributes of the fault, multiple different fault dips of the fault in the lateral direction can be obtained, and then the intersection of the multiple different fault dips can be determined as the lateral mutation point of the fault. Compared with the prior art methods of manually picking or automatically discriminating the fault dip for a single profile, it can more accurately judge the fault dip and its lateral mutation point, providing help for oil and gas exploration and development.
[0078] In the embodiments of this specification, referring to Figure 2 , obtaining the comprehensive seismic coherence attributes of the fault by comprehensively considering the seismic coherence attributes of multiple sets of strata further includes:
[0079] S201: Respectively obtain the seismic coherence attribute maps of multiple sets of strata according to the seismic coherence attribute values of multiple sets of strata;
[0080] S202: Superimpose the seismic coherence attribute maps of multiple sets of strata in a unified coordinate system to obtain the comprehensive seismic coherence attribute map of the fault.
[0081] Among them, through the prior art, the seismic coherence attribute maps of multiple sets of strata can be obtained respectively according to the seismic coherence attribute values of multiple sets of strata. Each set of strata has its corresponding seismic coherence attribute map. After superimposing the seismic coherence attribute maps of multiple sets of strata in a unified coordinate system, the comprehensive seismic coherence attribute map obtained contains multiple sets of strata. It should be noted that in order to prevent the multiple sets of strata from being indistinguishable after superimposition, the seismic coherence attribute maps of multiple sets of strata can be respectively marked with different colors. In this way, different strata can be distinguished by different colors in the superimposed comprehensive seismic coherence attribute map. Refer to Figure 8 It is the comprehensive coherence attribute map after superimposing the seismic coherence attribute maps of multiple sets of strata characterized by different colors. Among them, the multiple sets of strata are successively the three layers 1, 2, and 3 vertically. Light gray represents the lowest layer 3, gray represents the middle layer 2, and black represents the uppermost layer 1.
[0082] In the embodiments of this specification, refer to Figure 3 , obtaining multiple different fault dips corresponding to the fault in the transverse direction according to the comprehensive seismic coherence attribute of the fault further includes:
[0083] S301: According to the comprehensive seismic coherence attribute map of the fault, obtain the different positional relationships between multiple sets of strata at different positions in the transverse direction of the fault;
[0084] S302: Synthesize the relative movement direction of both sides of the fault and the different positional relationships between the multiple sets of strata to determine multiple different fault dips corresponding to the fault in the transverse direction.
[0085] There may be different positional relationships between multiple sets of strata at different positions in the transverse direction of the fault. For example, the multiple sets of strata are successively the three layers 1, 2, and 3 vertically. At position A in the transverse direction of the fault, there is a positional relationship between multiple sets of strata: layer 1 is above layer 2, and layer 2 is above layer 3; at position B in the transverse direction of the fault, there is a positional relationship between multiple sets of strata: layer 3 is above layer 2, and layer 2 is above layer 1.
[0086] The reason for the formation of the fault is that relative movement has occurred between both sides of the fault. By synthesizing the relative movement direction and the different positional relationships between multiple sets of strata, multiple different fault dips corresponding to the fault in the transverse direction can be determined.
[0087] Specifically, refer to Figure 4, determining multiple different fault dips corresponding to the fault in the lateral direction by synthesizing the relative movement directions of the two fault blocks and the different positional relationships between the multiple sets of strata further includes:
[0088] S401: Determine whether the fault is a normal fault or a reverse fault according to the relative movement directions of the two fault blocks of the fault;
[0089] S402: Based on the fact that the fault is a normal fault or a reverse fault, determine multiple different fault dips corresponding to the fault in the lateral direction according to the positional relationships of the uppermost layer or the lowermost layer in the multiple sets of strata relative to other strata at different positions in the lateral direction of the fault.
[0090] Generally speaking, a fault with the hanging wall moving downward relatively and the footwall moving upward relatively is a normal fault, and a fault with the hanging wall moving upward relatively and the footwall moving downward relatively is a reverse fault.
[0091] Further, referring to Figure 5 , the determining multiple different fault dips corresponding to the fault in the lateral direction based on the fact that the fault is a normal fault or a reverse fault and according to the positional relationships of the uppermost layer or the lowermost layer in the multiple sets of strata relative to other strata at different positions in the lateral direction of the fault further includes:
[0092] S501: If the fault is a reverse fault, determine multiple different fault dips corresponding to the fault in the lateral direction according to the positional relationships of the lowermost layer in the multiple sets of strata relative to other strata at different positions in the lateral direction of the fault;
[0093] S502: If the fault is a normal fault, determine multiple different fault dips corresponding to the fault in the lateral direction according to the positional relationships of the uppermost layer in the multiple sets of strata relative to other strata at different positions in the lateral direction of the fault.
[0094] Among them, the determining method for different positions in the lateral direction of the fault includes:
[0095] Select a position point at a set distance interval in the lateral direction of the fault to obtain multiple different positions in the lateral direction of the fault.
[0096] The function of the set distance is to judge whether the fault dip changes every set distance. If so, there is a corresponding lateral mutation point. Generally speaking, the shorter the set distance, the better for improving the recognition accuracy of the fault dip. However, if the set distance is too short, it will affect the calculation efficiency. Therefore, the average interval distance between two adjacent lateral mutation points of the known fault can be calculated, and this evaluation interval distance can be used as the set distance.
[0097] If the fault is a reverse fault, the multiple different fault dips corresponding to the fault in the transverse direction are determined based on the positional relationship of the lowermost layer among multiple sets of strata at different positions in the transverse direction of the fault relative to other strata, where the lowermost layer refers to the stratum at the bottom in the vertical direction among multiple sets of strata, and other strata refer to the remaining strata among multiple sets of strata except the uppermost layer.
[0098] For example, if multiple sets of strata are successively layers 1, 2, and 3 in the vertical direction, where layer 3 is the lowermost layer, at position A in the transverse direction of the fault, there is a positional relationship among multiple sets of strata: layer 1 is above layer 2, and layer 2 is above layer 3. The positional relationship of layer 3 at position A relative to layer 1 and layer 2 is used to determine one fault dip corresponding to the fault in the transverse direction; at position B in the transverse direction of the fault, there is a positional relationship among multiple sets of strata: layer 3 is above layer 2, and layer 2 is above layer 1. The positional relationship of layer 3 at position B relative to layer 1 and layer 2 is used to determine another fault dip corresponding to the fault in the transverse direction.
[0099] The situation of a normal fault is similar to that of a reverse fault, and the embodiments of this specification will not elaborate on this.
[0100] Among them, the step of determining multiple different fault dips corresponding to the fault in the transverse direction according to the positional relationship of the lowermost layer among multiple sets of strata at different positions in the transverse direction of the fault relative to other strata further includes:
[0101] The directions in which the lowermost layer among multiple sets of strata is away from other strata at different positions in the transverse direction of the fault are determined as the multiple different fault dips corresponding to the fault in the transverse direction.
[0102] Continuing with the above example, the direction in which layer 3 is away from layer 1 and layer 2 at position A is used as one fault dip corresponding to the fault in the transverse direction, and the direction in which layer 3 is away from layer 1 and layer 2 at position B is used as one fault dip corresponding to the fault in the transverse direction.
[0103] Refer to Figure 9 For the multiple different fault dips corresponding to the reverse fault shown in the transverse direction, the light gray is the lowermost layer 3. The direction in which the light gray stratum is away from other strata is the fault dip, that is, Figure 9 the direction shown by the arrow in. There are two fault dips, and the intersection of the two different fault dips is the transverse mutation point of the fault, that is, the position point shown by the star symbol is the transverse mutation point.
[0104] Among them, the step of determining multiple different fault dips corresponding to the fault in the transverse direction according to the positional relationship of the uppermost layer among multiple sets of strata at different positions in the transverse direction of the fault relative to other strata further includes:
[0105] The directions in which the uppermost layer among multiple sets of strata is away from other strata at different positions in the transverse direction of the fault are determined as the multiple different fault dips corresponding to the fault in the transverse direction.
[0106] The situation of normal faults is similar to that of reverse faults, and the embodiments of this specification will not elaborate on this.
[0107] Based on the above-described method for discriminating fault dip and lateral mutation points, the embodiments of this specification also correspondingly provide a device for discriminating fault dip and lateral mutation points. The described device may include a system (including a distributed system), software (application), module, component, server, client, etc. that uses the method described in the embodiments of this specification and combines the necessary implementation hardware. Based on the same innovative concept, the devices in one or more embodiments provided by the embodiments of this specification are as described in the following embodiments. Since the implementation solutions for the device to solve problems are similar to the method, the implementation of the specific device in the embodiments of this specification can refer to the implementation of the foregoing method, and the repeated parts will not be elaborated. As used hereinafter, the term "unit" or "module" may be a combination of software and / or hardware that can achieve a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware is also possible and contemplated.
[0108] Specifically, Figure 6 is a schematic diagram of the module structure of an embodiment of a device for discriminating fault dip and lateral mutation points provided by the embodiments of this specification. Referring to Figure 6 as shown, a device for discriminating fault dip and lateral mutation points provided by the embodiments of this specification includes: an acquisition module 100, a comprehensive module 200, a dip determination module 300, and a mutation point determination module 400.
[0109] The acquisition module 100 is used to acquire multiple sets of different strata vertically offset by the same fault;
[0110] The comprehensive module 200 is used to comprehensively process the seismic coherence attributes of each set of strata to obtain the comprehensive seismic coherence attribute of the fault;
[0111] The dip determination module 300 is used to obtain multiple different fault dips corresponding to the fault in the horizontal direction according to the comprehensive seismic coherence attribute of the fault;
[0112] The mutation point determination module 400 is used to determine the intersection of the multiple different fault dips as the lateral mutation point of the fault.
[0113] Referring to Figure 7As shown, based on the above-described method for discriminating fault dip and lateral mutation points, an embodiment of this specification also provides a computer device 702, where the above method runs on the computer device 702. The computer device 702 may include one or more processors 704, such as one or more central processing units (CPUs) or graphics processing units (GPUs), and each processing unit may implement one or more hardware threads. The computer device 702 may also include any memory 706, which is used to store any kind of information such as code, settings, data, etc. In a specific implementation, a computer program stored on the memory 706 and executable on the processor 704, when run by the processor 704, may execute the instructions according to the above method. Non-limiting examples include that the memory 706 may include any one or a combination of the following: any type of RAM, any type of ROM, flash memory devices, hard disks, optical discs, etc. More generally, any memory may use any technology to store information. Further, any memory may provide volatile or non-volatile retention of information. Further, any memory may represent a fixed or removable component of the computer device 702. In one case, when the processor 704 executes the associated instructions stored in any memory or combination of memories, the computer device 702 may perform any operation of the associated instructions. The computer device 702 also includes one or more drive mechanisms 708 for interacting with any memory, such as a hard disk drive mechanism, an optical disc drive mechanism, etc.
[0114] The computer device 702 may also include an input / output module 710 (I / O), which is used to receive various inputs (via the input device 712) and to provide various outputs (via the output device 714). A specific output mechanism may include a presentation device 716 and an associated graphical user interface 718 (GUI). In other embodiments, the input / output module 710 (I / O), the input device 712, and the output device 714 may not be included, and it may only be a computer device in the network. The computer device 702 may also include one or more network interfaces 720, which are used to exchange data with other devices via one or more communication links 722. One or more communication buses 724 couple the components described above together.
[0115] The communication link 722 may be implemented in any way, for example, through a local area network, a wide area network (e.g., the Internet), a point-to-point connection, etc., or any combination thereof. The communication link 722 may include any combination of hardwired links, wireless links, routers, gateway functions, name servers, etc. governed by any protocol or combination of protocols.
[0116] Corresponding to Figures 1 - 6In the method described above, the embodiments of this specification also provide a computer-readable storage medium. A computer program is stored on this computer-readable storage medium. When the computer program is run by a processor, it executes the steps of the above method.
[0117] The embodiments of this specification also provide a computer-readable instruction. When a processor executes the instruction, the program therein causes the processor to execute the method as Figures 1 to 6 shown.
[0118] It should be understood that in the various embodiments of this specification, the magnitudes of the sequence numbers of the above processes do not mean the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of this specification.
[0119] It should also be understood that in the embodiments of this specification, the term "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in the embodiments of this specification generally represents an "or" relationship between the associated objects before and after.
[0120] Those of ordinary skill in the art can realize that, in combination with the units and algorithm steps of the examples described in the embodiments disclosed in this specification, they can be implemented by electronic hardware, computer software, or a combination of the two. To clearly illustrate the interchangeability of hardware and software, the components and steps of each example have been generally described according to their functions in the above description. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the embodiments of this specification.
[0121] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.
[0122] In several embodiments provided in this specification, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Additionally, the displayed or discussed couplings or direct couplings or communication connections to each other can be indirect couplings or communication connections through some interfaces, devices, or units, and can also be in the form of electrical, mechanical, or other connections.
[0123] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiments of this specification.
[0124] In addition, in each embodiment of this specification, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated units can be implemented in the form of hardware or in the form of software functional units.
[0125] If the above integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiments of this specification, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in each embodiment of this specification. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs that can store program codes.
[0126] In this specification, specific embodiments are used to elaborate on the principles and implementation manners of the embodiments of this specification. The description of the above embodiments is only used to help understand the method and its core idea of the embodiments of this specification; at the same time, for those of ordinary skill in the art, according to the idea of the embodiments of this specification, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation on the embodiments of this specification.
Claims
1. A method for discriminating the strike of a fault and its lateral mutation points, characterized in that, it includes: Obtaining multiple sets of different strata vertically offset by the same fault; Integrating the seismic coherence attributes of each of the multiple sets of strata to obtain the comprehensive seismic coherence attribute of the fault; Based on the comprehensive seismic coherence attribute of the fault, obtaining multiple different fault strikes corresponding to the fault in the lateral direction; Determining the intersection of the multiple different fault strikes as the lateral mutation point of the fault.
2. The method according to claim 1, characterized in that, the step of integrating the seismic coherence attributes of each of the multiple sets of strata to obtain the comprehensive seismic coherence attribute of the fault further includes: Respectively obtaining the seismic coherence attribute maps of each of the multiple sets of strata according to the seismic coherence attribute values of each of the multiple sets of strata; Overlaying the seismic coherence attribute maps of each of the multiple sets of strata in a unified coordinate system to obtain the comprehensive seismic coherence attribute map of the fault.
3. The method according to claim 2, characterized in that, the step of obtaining multiple different fault strikes corresponding to the fault in the lateral direction based on the comprehensive seismic coherence attribute of the fault further includes: According to the comprehensive seismic coherence attribute map of the fault, obtaining the different positional relationships between multiple sets of strata at different positions in the lateral direction of the fault; Integrating the relative movement directions of the two sides of the fault and the different positional relationships between the multiple sets of strata to determine multiple different fault strikes corresponding to the fault in the lateral direction.
4. The method according to claim 3, characterized in that, the step of integrating the relative movement directions of the two sides of the fault and the different positional relationships between the multiple sets of strata to determine multiple different fault strikes corresponding to the fault in the lateral direction further includes: Determining whether the fault is a normal fault or a reverse fault according to the relative movement directions of the two sides of the fault; Based on whether the fault is a normal fault or a reverse fault, determining multiple different fault strikes corresponding to the fault in the lateral direction according to the positional relationships of the uppermost or lowermost layer among the multiple sets of strata relative to other strata at different positions in the lateral direction of the fault.
5. The method according to claim 4, characterized in that, the step of determining multiple different fault strikes corresponding to the fault in the lateral direction based on whether the fault is a normal fault or a reverse fault and according to the positional relationships of the uppermost or lowermost layer among the multiple sets of strata relative to other strata at different positions in the lateral direction of the fault further includes: If the fault is a reverse fault, determining multiple different fault strikes corresponding to the fault in the lateral direction according to the positional relationships of the lowermost layer among the multiple sets of strata relative to other strata at different positions in the lateral direction of the fault; If the fault is a normal fault, determining multiple different fault strikes corresponding to the fault in the lateral direction according to the positional relationships of the uppermost layer among the multiple sets of strata relative to other strata at different positions in the lateral direction of the fault.
6. The method according to claim 5, characterized in that, the step of determining multiple different fault strikes corresponding to the fault in the lateral direction according to the positional relationships of the lowermost layer among the multiple sets of strata relative to other strata at different positions in the lateral direction of the fault further includes: Determine the directions in which the lowermost layer of the multiple sets of strata is away from other strata at different positions transverse to the fault as the multiple different fault dips corresponding to the fault in the transverse direction.
7. The method according to claim 5, wherein, the determining of the multiple different fault dips corresponding to the fault in the transverse direction according to the positional relationship of the uppermost layer of the multiple sets of strata relative to other strata at different positions transverse to the fault further includes: Determine the directions in which the uppermost layer of the multiple sets of strata is away from other strata at different positions transverse to the fault as the multiple different fault dips corresponding to the fault in the transverse direction.
8. The method according to claim 4, wherein, the method for determining different positions transverse to the fault includes: Select a position point at a set distance interval in the transverse direction of the fault to obtain multiple different positions transverse to the fault.
9. The method according to claim 1, wherein, the multiple sets of different strata faulted vertically by the same fault further include: three sets of different strata faulted vertically by the same fault.
10. A discriminant device for fault dip and transverse mutation point, wherein, the device includes: an acquisition module for acquiring multiple sets of different strata faulted vertically by the same fault; a comprehensive module for comprehensively obtaining the comprehensive seismic coherence attribute of the fault by integrating the seismic coherence attributes of each of the multiple sets of strata; a dip determination module for obtaining multiple different fault dips corresponding to the fault in the transverse direction according to the comprehensive seismic coherence attribute of the fault; a mutation point determination module for determining the intersection of the multiple different fault dips as the transverse mutation point of the fault.
11. A computer device, including a memory, a processor, and a computer program stored on the memory, wherein, when the computer program is run by the processor, it executes the instructions of the method according to any one of claims 1-9.
12. A computer-readable storage medium, on which a computer program is stored, wherein, when the computer program is run by the processor of a computer device, it executes the instructions of the method according to any one of claims 1-9.