Paleomorphological restoration method, system, computer device and storage medium

Abstract

The present invention discloses a paleo-geomorphology restoration method, system, computer equipment and storage medium, and relates to the technical field of oil and gas geophysical exploration engineering and equipment. The method comprises: establishing a geomorphology restoration well-connected grid profile corresponding to a preset subsalt carbonate rock deep-water slope area, and determining, based on basic data of the preset subsalt carbonate rock deep-water slope area, a thickness distribution relationship between an upper layer of granular carbonate rock and a lower layer of deep-water carbonate rock in the preset subsalt carbonate rock deep-water slope area; obtaining specific data of preferred seismic attributes based on the basic data of the preset subsalt carbonate rock deep-water slope area, and constructing a preferred seismic attribute map based on the specific data of the preferred seismic attributes; and projecting the thickness distribution relationship between the upper layer of granular carbonate rock and the lower layer of deep-water carbonate rock in the preset subsalt carbonate rock deep-water slope area onto the preferred seismic attribute map to obtain the paleo-geomorphology of the preset subsalt carbonate rock deep-water slope area.

Description

Technical Field

[0001] The present invention relates to the technical field of oil and gas geophysical exploration engineering and equipment, and in particular to a paleo-landform restoration method, system, computer equipment and storage medium. Background Art

[0002] Presalt carbonate rocks play a crucial role in oil and gas exploration and development. Paragenetic associations of gypsum and carbonate rocks hold approximately 46% of the world's total reserves in major carbonate rocks. Examples include the Permian in the Ghawar oilfield in eastern Saudi Arabia, the Ordovician in Texas, the Upper Jurassic in the Gulf of Mexico, and the Cretaceous in the Santos Basin in Brazil. Reef-flat and karst reservoirs, important targets in carbonate oil and gas exploration and development, are significantly influenced by paleogeomorphology in their formation and development. Therefore, accurately restoring paleogeomorphology is crucial in carbonate oil and gas exploration and development.

[0003] Currently, the main methods commonly used for paleogeomorphological reconstruction include the impression method, the residual thickness method, the sedimentary cycle method, and the stratigraphic stripping method. Different paleogeomorphological reconstruction methods have different application conditions. The sedimentary cycle method and stratigraphic stripping method generally rely on drilling data, and are often unable to effectively restore paleogeomorphology in newly explored areas or areas with low drilling density. While the impression method and the residual thickness method can utilize 3D seismic data to accurately track isochronal interfaces and utilize stratigraphic thickness to reconstruct paleogeomorphology, in subsalt areas, seismic data from subsalt formations often have low dominant frequencies and poor data quality due to the shielding and attenuation of seismic energy by gypsum. This makes it difficult to accurately track seismic reflection axes. Furthermore, the flexible nature of gypsum makes it difficult to accurately reflect the paleogeomorphological distribution of subsalt formations due to the thickness of the overlying strata. Therefore, the impression method and the residual thickness method are not suitable for paleogeomorphological reconstruction of subsalt carbonate formations.

[0004] Due to the limitations of data or methods, the existing paleogeomorphology restoration methods have poor reliability and are also questionable in terms of authenticity when restoring carbonate paleogeomorphology in subsalt areas. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to address the deficiencies of the existing technology and specifically provide a paleo-geomorphology restoration method, system, computer device and storage medium, as follows:

[0006] 1) In the first aspect, the present invention provides a method for restoring ancient landforms, the specific technical solution of which is as follows:

[0007] Establish a geomorphic restoration well grid profile corresponding to the pre-set subsalt carbonate rock deepwater slope area, and determine the thickness distribution relationship between the upper granular carbonate rock and the lower deepwater carbonate rock in the pre-set subsalt carbonate rock deepwater slope area based on the basic data of the pre-set subsalt carbonate rock deepwater slope area;

[0008] According to the basic data of the pre-set subsalt carbonate deepwater slope area, specific data of the preferred seismic attributes are obtained, and based on the specific data of the preferred seismic attributes, a preferred seismic attribute map is constructed;

[0009] The thickness distribution relationship between the upper granular carbonate rock and the lower deep-water carbonate rock in the preset subsalt carbonate rock deep-water slope area is projected onto the optimized seismic attribute map to obtain the paleo-geomorphology of the preset subsalt carbonate rock deep-water slope area.

[0010] The beneficial effects of the paleo-geomorphology restoration method provided by the present invention are as follows:

[0011] It can realize the restoration of ancient landforms in areas where accurate interpretation of seismic horizons is impossible, thereby solving the problem of poor landform restoration effects in areas where the horizon interpretation is not accurate enough.

[0012] On the basis of the above scheme, the paleo-geomorphology restoration method of the present invention can be further improved as follows.

[0013] Furthermore, the process of determining the preferred seismic attributes includes:

[0014] A theoretical wedge forward model is designed based on the actual thickness distribution relationship between the upper granular carbonate rock and the lower deepwater carbonate rock in the target pre-set subsalt carbonate rock deepwater slope area;

[0015] Based on the seismic forward modeling results of the target pre-set subsalt carbonate deepwater slope area, the correlation between the theoretical wedge forward model and the seismic attributes was established, and the seismic attribute with the highest correlation was determined as the preferred seismic attribute.

[0016] Furthermore, the basic data includes: 3D seismic data volume, conventional well logging curves, geological layering data and well logging interpretation data.

[0017] Furthermore, the method further includes: performing horizon calibration on the three-dimensional seismic data volume based on the well logging interpretation data and the geological layering data by using a synthetic record production method to obtain a seismic interpretation horizon;

[0018] The process of determining the thickness distribution relationship between the upper granular carbonate rock and the lower deepwater carbonate rock in a pre-determined subsalt carbonate rock deepwater slope area includes:

[0019] The seismic interpretation horizons were mapped onto the geomorphological restoration well grid section, and the interface between the upper granular carbonate rock and the lower deep-water carbonate rock in the well logging interpretation data was used as the reference plane. The horizon leveling method was used to determine the thickness distribution relationship between the upper granular carbonate rock and the lower deep-water carbonate rock in the preset subsalt carbonate rock deep-water slope area.

[0020] 2) In a second aspect, the present invention further provides a paleo-geomorphology restoration system, the specific technical solution of which is as follows:

[0021] It includes the establishment of determination module, construction module and paleo-geomorphology restoration module;

[0022] Establishing a determination module for: establishing a geomorphic restoration well grid profile corresponding to a preset subsalt carbonate rock deepwater slope area, and determining the thickness distribution relationship between the upper layer of granular carbonate rock and the lower layer of deepwater carbonate rock in the preset subsalt carbonate rock deepwater slope area based on the basic data of the preset subsalt carbonate rock deepwater slope area;

[0023] The construction module is used to obtain specific data of preferred seismic attributes based on the basic data of the pre-set subsalt carbonate deepwater slope area, and construct a preferred seismic attribute map based on the specific data of the preferred seismic attributes;

[0024] The paleogeomorphology restoration module is used to project the thickness distribution relationship between the upper granular carbonate rock and the lower deep-water carbonate rock in the preset subsalt carbonate rock deep-water slope area onto the preferred seismic attribute map to obtain the paleogeomorphology of the preset subsalt carbonate rock deep-water slope area.

[0025] Based on the above solution, the paleo-geomorphology restoration system of the present invention can be further improved as follows.

[0026] Furthermore, the system further includes a preferred earthquake attribute determination module, which is used to:

[0027] A theoretical wedge forward model is designed based on the actual thickness distribution relationship between the upper granular carbonate rock and the lower deepwater carbonate rock in the target pre-set subsalt carbonate rock deepwater slope area;

[0028] Based on the seismic forward modeling results of the target pre-set subsalt carbonate deepwater slope area, the correlation between the theoretical wedge forward model and the seismic attributes was established, and the seismic attribute with the highest correlation was determined as the preferred seismic attribute.

[0029] Furthermore, the basic data includes: 3D seismic data volume, conventional well logging curves, geological layering data and well logging interpretation data.

[0030] Furthermore, it also includes a layer calibration module, which is used to: perform layer calibration on the three-dimensional seismic data volume based on the well logging interpretation data and the geological layering data by using a synthetic record production method to obtain the seismic interpretation layer;

[0031] The process of establishing a determination module to determine the thickness distribution relationship between the upper granular carbonate rock and the lower deepwater carbonate rock in a preset subsalt carbonate rock deepwater slope area includes:

[0032] The seismic interpretation horizons were mapped onto the geomorphological restoration well grid section, and the interface between the upper granular carbonate rock and the lower deep-water carbonate rock in the well logging interpretation data was used as the reference plane. The horizon leveling method was used to determine the thickness distribution relationship between the upper granular carbonate rock and the lower deep-water carbonate rock in the preset subsalt carbonate rock deep-water slope area.

[0033] 3) In a third aspect, the present invention further provides a computer device, comprising a processor coupled to a memory, wherein the memory stores at least one computer program, and the at least one computer program is loaded and executed by the processor so that the computer device implements any one of the above-mentioned paleo-geomorphology restoration methods.

[0034] 4) In a fourth aspect, the present invention further provides a computer-readable storage medium, in which at least one computer program is stored, and the at least one computer program is loaded and executed by a processor to enable the computer to implement any of the above-mentioned paleo-geomorphology restoration methods.

[0035] It should be noted that the beneficial effects achieved by the technical solutions of the second to fourth aspects of the present invention and the corresponding possible implementation methods can be found in the above-mentioned technical effects of the first aspect and its corresponding possible implementation methods, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0037] Figure 1 Schematic diagram of a process for restoring ancient landforms according to an embodiment of the present invention;

[0038] Figure 2 Schematic diagram of the seismic interpretation horizon;

[0039] Figure 3 It is the stratigraphic framework section;

[0040] Figure 4 Simulate profiles for earthquake forward modeling;

[0041] Figure 5 is a schematic diagram of the fitting curve;

[0042] Figure 6 It is a three-dimensional sedimentary paleo-geomorphological map;

[0043] Figure 7 Schematic diagram of the structure of a paleo-geomorphology restoration system according to an embodiment of the present invention;

[0044] Figure 8 Schematic diagram of the structure of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0045] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0046] like Figure 1 As shown, a paleo-geomorphology restoration method according to an embodiment of the present invention includes the following steps:

[0047] S1. Establish a geomorphic restoration well grid profile corresponding to a preset subsalt carbonate rock deepwater slope area, and determine the thickness distribution relationship between the upper granular carbonate rock and the lower deepwater carbonate rock in the preset subsalt carbonate rock deepwater slope area based on the basic data of the preset subsalt carbonate rock deepwater slope area;

[0048] The basic data includes: 3D seismic data, conventional well logging curve geological layer data and well logging interpretation data. Basic data can also include drilling and logging data, well trajectory data and layer interpretation data.

[0049] S2. Obtaining specific data of preferred seismic attributes based on the preset basic data of the subsalt carbonate deepwater slope area, and constructing a preferred seismic attribute map based on the specific data of the preferred seismic attributes;

[0050] S3. Project the thickness distribution relationship between the upper granular carbonate rock and the lower deep-water carbonate rock in the preset subsalt carbonate rock deep-water slope area onto the preferred seismic attribute map to obtain the paleo-geomorphology of the preset subsalt carbonate rock deep-water slope area.

[0051] Among them, the preset subsalt carbonate rock deepwater slope area refers to: the subsalt carbonate rock deepwater slope area that requires paleo-geomorphological restoration, which can be set according to actual conditions.

[0052] A paleogeomorphology restoration method according to an embodiment of the present invention can restore paleogeomorphology in areas where accurate interpretation of seismic horizons is not possible, thereby solving the problem of poor landform restoration effects in areas where the horizon interpretation is not accurate enough.

[0053] Optionally, in the above technical solution, the following is further included:

[0054] After obtaining the paleo-geomorphology of the preset subsalt carbonate rock deep-water slope area, the paleo-geomorphology of the preset subsalt carbonate rock deep-water slope area is visualized in three dimensions, such as Figure 6 shown.

[0055] Optionally, in the above technical solution, the process of determining the preferred earthquake attribute includes:

[0056] S020. Based on the actual thickness distribution relationship between the upper granular carbonate rock and the lower deep-water carbonate rock in the target preset subsalt carbonate rock deep-water slope area, a theoretical wedge forward model is designed. The model parameters of the theoretical wedge forward model are consistent with the parameters of the 3D seismic data volume. The parameters of the 3D seismic data volume are set according to the actual situation. The seismic forward simulation profile of the theoretical wedge forward model is as follows: Figure 4 shown.

[0057] The target preset subsalt carbonate rock deepwater slope area refers to a preset subsalt carbonate rock deepwater slope area where actual survey has been carried out and the actual thickness distribution relationship between the upper granular carbonate rock and the lower deepwater carbonate rock has been obtained, and can be set according to actual conditions.

[0058] S021. Based on the seismic forward modeling results of the target pre-set subsalt carbonate deepwater slope area, establish the correlation between the theoretical wedge forward model and the seismic attributes, and determine the seismic attribute with the highest correlation as the preferred seismic attribute.

[0059] The theoretical wedge forward model needs to be based on the actual drilling well connection profile of the target preset subsalt carbonate deepwater slope area, the model must be drawn according to the real drilling layer data, and the seismic forward velocity must be determined according to the real logging data. The forward modeling results need to be compared with the actual seismic profile to ensure the true effect.

[0060] The specific explanation of S021 is as follows:

[0061] In the target preset subsalt carbonate deepwater slope area, there is a "filling and leveling" effect when the upper granular carbonate rock and the lower deepwater carbonate rock are deposited. Therefore, the reef beach located in the high part of the paleo-geomorphology will grow and accumulate rapidly, resulting in a large deposition thickness of the upper granular carbonate rock and a small deposition thickness of the lower deepwater carbonate rock; in the low part of the paleo-geomorphology, the deposition thickness of the upper granular carbonate rock is small, and the deposition thickness of the lower deepwater carbonate rock is large. However, as a whole, in the target preset subsalt carbonate deepwater slope area, the sum of the thickness of the upper granular carbonate rock and the lower deepwater carbonate rock at each position does not change much and is basically equal. Figure 3 The stratigraphic framework section in is shown. Then:

[0062] A variety of seismic attributes can be obtained by using the three-dimensional seismic data volume in the basic data of the pre-set subsalt carbonate deepwater slope area. Each seismic attribute has a corresponding attribute value at the interface between the upper granular carbonate rock and the lower deepwater carbonate rock. The attribute value of each well point is obtained, and the attribute value of any well point is linearly fitted with the thickness of the lower deepwater carbonate rock of the well to obtain a fitting curve. The correlation coefficient of the fitting curve is calculated, as shown in Figure 2. Figure 5As shown, until the fitting curve corresponding to each well point is obtained, and then the correlation coefficient corresponding to each well point is obtained, the seismic attribute corresponding to the maximum correlation coefficient is determined as the preferred seismic attribute. Figure 5 In the figure, y=19.772x-1531.8 is a fitting curve, R 2 =0.777, R 2 is the correlation coefficient of the fitting curve y=19.772x-1531.8, where x represents the thickness of the underlying deepwater carbonate rock and y represents the attribute value of the seismic attribute passing the well point.

[0063] The 3D seismic data volume in the basic data of the pre-targeted deepwater slope area of ​​pre-salt carbonate rocks can be used to obtain a variety of seismic attributes, including:

[0064] In a time window manner, a variety of seismic attributes can be obtained from the three-dimensional seismic data volume in the basic data of the target preset subsalt carbonate deepwater slope area. The time window should well reflect the thickness relationship between the layer of granular carbonate rock and the underlying deepwater carbonate rock. Therefore, a single time window should include a peak or trough phase.

[0065] Optionally, in the above technical solution, the following is further included:

[0066] According to the well logging interpretation data and geological layering data, the synthetic record production method is used to perform layer calibration on the 3D seismic data volume to obtain the seismic interpretation layer, such as Figure 2 shown.

[0067] The process of determining the thickness distribution relationship between the upper granular carbonate rock and the lower deepwater carbonate rock in a pre-determined subsalt carbonate rock deepwater slope area includes:

[0068] The seismic interpretation horizons were mapped onto the geomorphological restoration well grid section, and the interface between the upper granular carbonate rock and the lower deep-water carbonate rock in the well logging interpretation data was used as the reference plane. The horizon leveling method was used to determine the thickness distribution relationship between the upper granular carbonate rock and the lower deep-water carbonate rock in the preset subsalt carbonate rock deep-water slope area.

[0069] In the above embodiments, although the steps are numbered S1, S2, etc., these are only specific embodiments given by the present invention. Those skilled in the art may adjust the execution order of S1, S2, etc. according to actual conditions, which is also within the scope of protection of the present invention. It can be understood that in some embodiments, some or all of the above embodiments may be included.

[0070] like Figure 7 As shown, a paleo-geomorphology restoration system 200 according to an embodiment of the present invention includes an establishment and determination module 201, a construction module 202 and a paleo-geomorphology restoration module 203;

[0071] The establishment and determination module 201 is used to: establish a geomorphic restoration well grid profile corresponding to a preset subsalt carbonate rock deepwater slope area, and determine the thickness distribution relationship between the upper layer of granular carbonate rock and the lower layer of deepwater carbonate rock in the preset subsalt carbonate rock deepwater slope area based on the basic data of the preset subsalt carbonate rock deepwater slope area;

[0072] The construction module 202 is used to obtain specific data of the preferred seismic attributes according to the basic data of the pre-salt carbonate deepwater slope area, and construct a preferred seismic attribute map based on the specific data of the preferred seismic attributes;

[0073] The paleo-geomorphology restoration module 203 is used to project the thickness distribution relationship between the upper granular carbonate rock and the lower deep-water carbonate rock in the preset subsalt carbonate rock deep-water slope area onto the preferred seismic attribute map to obtain the paleo-geomorphology of the preset subsalt carbonate rock deep-water slope area.

[0074] Optionally, the above technical solution further includes a preferred earthquake attribute determination module, which is used to:

[0075] A theoretical wedge forward model is designed based on the actual thickness distribution relationship between the upper granular carbonate rock and the lower deepwater carbonate rock in the target pre-set subsalt carbonate rock deepwater slope area;

[0076] Based on the seismic forward modeling results of the target pre-set subsalt carbonate deepwater slope area, the correlation between the theoretical wedge forward model and the seismic attributes was established, and the seismic attribute with the highest correlation was determined as the preferred seismic attribute.

[0077] Optionally, in the above technical solution, the basic data includes: three-dimensional seismic data volume, conventional well logging curves, geological layering data and well logging interpretation data.

[0078] Optionally, the above technical solution further includes a horizon calibration module, which is used to: perform horizon calibration on the three-dimensional seismic data volume based on the well logging interpretation data and the geological layering data by using a synthetic record production method to obtain the seismic interpretation horizon;

[0079] The process of establishing the determination module 201 to determine the thickness distribution relationship between the upper granular carbonate rock and the lower deepwater carbonate rock in the preset subsalt carbonate rock deepwater slope area includes:

[0080] The seismic interpretation horizons were mapped onto the geomorphological restoration well grid section, and the interface between the upper granular carbonate rock and the lower deep-water carbonate rock in the well logging interpretation data was used as the reference plane. The horizon leveling method was used to determine the thickness distribution relationship between the upper granular carbonate rock and the lower deep-water carbonate rock in the preset subsalt carbonate rock deep-water slope area.

[0081] It should be noted that the beneficial effects of the paleo-geomorphology restoration system 200 provided in the above embodiment are the same as the beneficial effects of the above paleo-geomorphology restoration method, and will not be repeated here. In addition, when implementing its functions, the system provided in the above embodiment is only illustrated by the division of the above functional modules. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the system can be divided into different functional modules according to actual conditions to complete all or part of the functions described above. In addition, the system and method embodiments provided in the above embodiment are based on the same concept. The specific implementation process is detailed in the method embodiment and will not be repeated here.

[0082] like Figure 8 As shown, a computer device 300 according to an embodiment of the present invention includes a processor 320 coupled to a memory 310. The memory 310 stores at least one computer program 330. The at least one computer program 330 is loaded and executed by the processor 320 to enable the computer device 300 to implement any of the above-mentioned paleo-geomorphology restoration methods, specifically:

[0083] The computer device 300 may vary significantly due to different configurations or performance, and may include one or more processors 320 (Central Processing Units, CPUs) and one or more memories 310. The one or more memories 310 store at least one computer program 330, which is loaded and executed by the one or more processors 320 to enable the computer device 300 to implement any of the paleogeology restoration methods provided in the above embodiments. Of course, the computer device 300 may also have components such as a wired or wireless network interface, a keyboard, and input / output interfaces for input and output. The computer device 300 may also include other components for implementing device functions, which will not be detailed here.

[0084] A computer-readable storage medium according to an embodiment of the present invention stores at least one computer program, which is loaded and executed by a processor to enable a computer to implement any of the above-mentioned paleo-geomorphology restoration methods.

[0085] Alternatively, the computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a compact disc (CD-ROM), a magnetic tape, a floppy disk, an optical data storage device, or the like.

[0086] In an exemplary embodiment, a computer program product or computer program is also provided, the computer program product or computer program including computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform any of the aforementioned paleogeomorphology restoration methods.

[0087] It should be noted that the terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects and to define a specific order or precedence. Where appropriate, the order used for similar objects may be interchanged, such that the embodiments of the present application described herein can be implemented in an order other than the order shown or described.

[0088] Those skilled in the art will appreciate that the present invention may be implemented as a system, method, or computer program product. Therefore, the present invention may be implemented in the following forms: entirely in hardware, entirely in software (including firmware, resident software, microcode, etc.), or in a combination of hardware and software, generally referred to herein as a "circuit," "module," or "system." Furthermore, in some embodiments, the present invention may be implemented in the form of a computer program product embodied in one or more computer-readable media containing computer-readable program code.

[0089] Any combination of one or more computer-readable media can be used. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or component, or any combination thereof. More specific examples of computer-readable storage media (a non-exhaustive list) include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In the present invention, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, device or device.

[0090] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A method for restoring ancient landforms, characterized in that: include: Establishing a geomorphic restoration well grid profile corresponding to a preset subsalt carbonate rock deepwater slope area, and determining the thickness distribution relationship between the upper granular carbonate rock and the lower deepwater carbonate rock in the preset subsalt carbonate rock deepwater slope area based on the basic data of the preset subsalt carbonate rock deepwater slope area; Obtaining specific data of preferred seismic attributes based on the basic data of the preset subsalt carbonate deepwater slope area, and constructing a preferred seismic attribute map based on the specific data of the preferred seismic attributes; The thickness distribution relationship between the upper granular carbonate rock and the lower deep-water carbonate rock in the preset subsalt carbonate rock deep-water slope area is projected onto the preferred seismic attribute map to obtain the paleo-geomorphology of the preset subsalt carbonate rock deep-water slope area.

2. A paleo-geomorphology restoration method according to claim 1, characterized in that: The process of determining the preferred seismic attributes comprises: A theoretical wedge forward model is designed based on the actual thickness distribution relationship between the upper granular carbonate rock and the lower deepwater carbonate rock in the target pre-set subsalt carbonate rock deepwater slope area; Based on the seismic forward modeling results of the target preset subsalt carbonate deepwater slope area, the correlation between the theoretical wedge forward model and the seismic attributes is established, and the seismic attribute with the highest correlation is determined as the preferred seismic attribute.

3. A paleo-geomorphology restoration method according to claim 2, characterized in that: Basic data include: 3D seismic data, conventional well logging curves, geological stratification data and well logging interpretation data.

4. A paleo-geomorphology restoration method according to claim 3, characterized in that: Also includes: Based on the well logging interpretation data and the geological layering data, a layer position is calibrated on the three-dimensional seismic data volume by using a synthetic record production method to obtain a seismic interpretation layer position; The process of determining the thickness distribution relationship between the upper granular carbonate rock and the lower deepwater carbonate rock in the predetermined subsalt carbonate rock deepwater slope area includes: The seismic interpretation horizon is mapped on the geomorphic restoration well grid section, and the interface between the upper granular carbonate rock and the lower deep-water carbonate rock in the logging interpretation data is used as the reference plane. The horizon leveling method is used to determine the thickness distribution relationship between the upper granular carbonate rock and the lower deep-water carbonate rock in the preset subsalt carbonate rock deep-water slope area.

5. A paleo-geomorphology restoration system, characterized in that: It includes the establishment of determination module, construction module and paleo-geomorphology restoration module; The establishing and determining module is used to establish a geomorphic restoration well grid profile corresponding to a preset subsalt carbonate rock deepwater slope area, and determine the thickness distribution relationship between the upper layer of granular carbonate rock and the lower layer of deepwater carbonate rock in the preset subsalt carbonate rock deepwater slope area based on the basic data of the preset subsalt carbonate rock deepwater slope area; The construction module is used to obtain specific data of preferred seismic attributes based on the basic data of the preset subsalt carbonate deepwater slope area, and construct a preferred seismic attribute map based on the specific data of the preferred seismic attributes; The paleo-geomorphology restoration module is used to project the thickness distribution relationship between the upper granular carbonate rock and the lower deep-water carbonate rock in the preset subsalt carbonate rock deep-water slope area onto the preferred seismic attribute map to obtain the paleo-geomorphology of the preset subsalt carbonate rock deep-water slope area.

6. A paleo-geomorphology restoration system according to claim 5, characterized in that: The preferred earthquake attribute determination module is further included, and the preferred earthquake attribute determination module is used to: A theoretical wedge forward model is designed based on the actual thickness distribution relationship between the upper granular carbonate rock and the lower deepwater carbonate rock in the target pre-set subsalt carbonate rock deepwater slope area; Based on the seismic forward modeling results of the target preset subsalt carbonate deepwater slope area, the correlation between the theoretical wedge forward model and the seismic attributes is established, and the seismic attribute with the highest correlation is determined as the preferred seismic attribute.

7. A paleo-geomorphology restoration system according to claim 6, characterized in that: Basic data include: 3D seismic data, conventional well logging curves, geological stratification data and well logging interpretation data.

8. A paleo-geomorphology restoration system according to claim 7, characterized in that: The system further comprises a horizon calibration module, which is used to: perform horizon calibration on a three-dimensional seismic data volume based on the well logging interpretation data and the geological layering data by using a synthetic record production method to obtain a seismic interpretation horizon; The process of establishing a determination module to determine the thickness distribution relationship between the upper granular carbonate rock and the lower deepwater carbonate rock in the preset subsalt carbonate rock deepwater slope area includes: The seismic interpretation horizon is mapped on the geomorphic restoration well grid section, and the interface between the upper granular carbonate rock and the lower deep-water carbonate rock in the logging interpretation data is used as the reference plane. The horizon leveling method is used to determine the thickness distribution relationship between the upper granular carbonate rock and the lower deep-water carbonate rock in the preset subsalt carbonate rock deep-water slope area.

9. A computer device, characterized in that: The computer device includes a processor, which is coupled to a memory. The memory stores at least one computer program, and the at least one computer program is loaded and executed by the processor so that the computer device implements a paleo-geomorphology restoration method as described in any one of claims 1 to 4.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores at least one computer program, which is loaded and executed by a processor to enable a computer to implement a paleo-geomorphology restoration method as claimed in any one of claims 1 to 4.

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