Recovery method and system for oil and gas dynamic reservoir forming process

Abstract

The invention belongs to the technical field of oil-gas exploration and oil-gas accumulation quantitative simulation, and particularly relates to an oil-gas dynamic accumulation process recovery method and system. The method comprises the following steps: acquiring a seismic profile map of a target area, and determining a seismic image file of the seismic profile map; performing two-dimensional structure modeling on the seismic image file to obtain a two-dimensional structure model of the seismic image file; performing tectonic evolution recovery on the two-dimensional tectonic model of the seismic image file to obtain tectonic profile files of the seismic profile map in different geological periods; and reservoir forming modeling is carried out on the structural profile files in different geological periods, and reservoir forming pictures of the target region in different geological periods are displayed. According to the method, the reservoir forming process of the existing oil and gas reservoir can be known, the existing reservoir forming mode can be verified, whether the oil and gas reservoir can be formed in the exploration blank area or not can be predicted, and technical support is provided for oil and gas exploration.

Description

Technical Field

[0001] The present disclosure belongs to the technical field of oil and gas exploration and quantitative simulation of oil and gas accumulation, and in particular relates to a method and system for recovering the dynamic oil and gas accumulation process. Background Art

[0002] The accumulation process of oil and gas includes generation, expulsion, migration, accumulation and dissipation. A cross-section or plan view is usually used to represent the generation-expulsion-migration-accumulation process of a certain geological period. The comparison and arrangement of maps from all geological periods or the synthesis of an animation can show the dynamic accumulation process of oil and gas. There are two main methods for compiling these maps: (1) Qualitative method: Using two-dimensional sections, manually restore the tectonic evolution history, and then qualitatively mark the oil and gas reservoirs and migration paths on the tectonic evolution history section to form a model diagram of the accumulation process. This method is highly subjective and reflects people's current understanding of accumulation, and cannot guarantee objectivity; (2) Quantitative method: Based on the application of software to restore the tectonic evolution history, the process is quantitatively simulated with the help of basin simulation software. The result is a quantitative map under parameter constraints. It is objective and can verify the rationality of the existing accumulation model, thereby improving and correcting the understanding of accumulation. The quantitative method is mainly used in extensional basins, which mainly develop normal faults. Basins formed under compressional environments primarily develop reverse faults. Complex reverse fault systems are found in superimposed basins such as the Sichuan Basin, Tarim Basin, Junggar Basin, and Qaidam Basin. Therefore, in basins where reverse (thrust) faults develop, quantitative structural interpretation (planar mapping), restoration of structural evolution history, and simulation of oil and gas reservoir formation all face significant technical challenges. Currently, it is difficult to describe the dynamic reservoir formation process of oil and gas generation, expulsion, migration, and accumulation using a single technical approach. Furthermore, the combined application of multiple technologies to address this issue requires overcoming numerous technical difficulties, and qualitative methods are often used to describe the dynamic reservoir formation process. Currently, no methods for restoring the dynamic reservoir formation process of oil and gas in reverse fault-developed areas of compressional basins have been reported. Summary of the Invention

[0003] In response to the above problems, the present disclosure provides a method for recovering the dynamic oil and gas accumulation process, the method comprising:

[0004] Acquire a seismic profile of a target area and determine a seismic image file of the seismic profile;

[0005] Performing two-dimensional structural modeling on the seismic image file to obtain a two-dimensional structural model of the seismic image file;

[0006] Performing structural evolution restoration on the two-dimensional structural model of the seismic image file to obtain structural section files of the seismic section image at different geological periods;

[0007] Conduct reservoir modeling on the structural profile files of different geological periods to display the reservoir formation pictures of the target area in different geological periods;

[0008] The dynamic oil and gas accumulation process of the target area is determined based on the accumulation pictures of the target area in different geological periods.

[0009] In one aspect, obtaining a seismic profile of a target area and determining a seismic image file of the seismic profile include:

[0010] Combining the seismic profile with the wells in the target area to perform structural interpretation and determine a time domain profile of the seismic profile;

[0011] Performing time-depth conversion on the time-domain section of the seismic section diagram to obtain a depth-domain section of the seismic section diagram;

[0012] A seismic image file of the seismic section diagram is determined according to the depth domain profile of the seismic section diagram.

[0013] On the one hand, performing two-dimensional structural modeling on the seismic image file includes:

[0014] The seismic image file is digitally interpreted, and attributes are edited, lithologic data is created and edited, and a Polygon is created to obtain a two-dimensional structural model of the seismic image file.

[0015] On the one hand, performing structural evolution restoration on the two-dimensional structural model of the seismic image file includes:

[0016] Obtaining the amount of erosion in the target area, and adding the amount of erosion to the two-dimensional structural model of the seismic image file to restore the original stratum thickness of the target area;

[0017] Determining a compaction function according to the lithology of the target area, and performing an inverse operation using the compaction function to perform compaction correction on the stratum thickness of the target area to restore the original stratum thickness;

[0018] Eliminating the fault throw of the fault in the two-dimensional structural model of the seismic image file;

[0019] Fold recovery is performed on the two-dimensional structural model of the seismic image file.

[0020] In one aspect, eliminating the fault throw of a fault in a two-dimensional structural model of the seismic image file includes:

[0021] determining the fault type of the fault in the two-dimensional structural model;

[0022] Determining a fault restoration method according to the fault type of the fault, and using the fault restoration method to eliminate the fault distance of the fault;

[0023] The fault restoration method includes a fault parallel flow method.

[0024] On the one hand, performing fold recovery on the two-dimensional structural model of the seismic image file includes:

[0025] The two-dimensional structural model of the seismic image file is restored by using a flexure-slip method.

[0026] On the one hand, reservoir modeling is performed on the structural profile files of different geological periods, including:

[0027] Importing the structural section file, and setting the geological age of each section in the structural section file;

[0028] Dividing the structural section file into vertical blocks;

[0029] Performing gridding processing on each section in the structural section file;

[0030] Defining attributes of stratigraphic units of each section in the structural section file;

[0031] Fault parameters are configured for each stratigraphic unit in the structural section file.

[0032] On the one hand, before demonstrating the dynamic oil and gas accumulation process in the target area based on the accumulation pictures of the target area in different geological periods, it includes:

[0033] Thermal history simulation and correction are performed on the reservoir formation pictures of the target area in different geological periods.

[0034] On the one hand, before demonstrating the dynamic oil and gas accumulation process in the target area based on the accumulation pictures of the target area in different geological periods, it includes:

[0035] Carry out reservoir simulation correction on the reservoir formation pictures of the target area in different geological periods.

[0036] On the one hand, based on the reservoir formation pictures of the target area in different geological periods, the dynamic oil and gas accumulation process of the target area is demonstrated, including:

[0037] The oil and gas accumulation pictures of the target area in different geological periods are sorted in chronological order to generate a target dynamic map; the target dynamic map is used to characterize the dynamic oil and gas accumulation process of the target area.

[0038] The present disclosure also provides a system for recovering the dynamic oil and gas accumulation process, the system comprising:

[0039] An acquisition module is used to acquire a seismic profile of a target area and determine a seismic image file of the seismic profile;

[0040] A modeling module, configured to perform two-dimensional structural modeling on the seismic image file to obtain a two-dimensional structural model of the seismic image file;

[0041] An evolution module, configured to perform structural evolution recovery on the two-dimensional structural model of the seismic image file to obtain structural section files of the seismic section image at different geological periods;

[0042] A reservoir formation module, used to perform reservoir formation modeling on the structural profile files of different geological periods, and determine the reservoir formation pictures of the target area in different geological periods;

[0043] The display module is used to display the dynamic oil and gas accumulation process of the target area based on the accumulation pictures of the target area in different geological periods.

[0044] In one aspect, the acquisition module is used to acquire a seismic profile of a target area and determine a seismic image file of the seismic profile, including:

[0045] The acquisition module is used to combine the seismic profile with the wells in the target area to perform structural interpretation and determine the time domain profile of the seismic profile;

[0046] Performing time-depth conversion on the time-domain section of the seismic section diagram to obtain a depth-domain section of the seismic section diagram;

[0047] A seismic image file of the seismic section diagram is determined according to the depth domain profile of the seismic section diagram.

[0048] On the one hand, the modeling module is used to perform two-dimensional structural modeling on the seismic image file, including:

[0049] The modeling module is used to digitally interpret the seismic image file, edit attributes, create and edit lithologic data, and create Polygons to obtain a two-dimensional structural model of the seismic image file.

[0050] On the one hand, the evolution module is used to restore the structural evolution of the two-dimensional structural model of the seismic image file, including:

[0051] The evolution module is used to obtain the erosion amount of the target area and add the erosion amount to the two-dimensional structural model of the seismic image file to restore the original stratum thickness of the target area;

[0052] Determining a compaction function according to the lithology of the target area, and performing an inverse operation using the compaction function to perform compaction correction on the stratum thickness of the target area to restore the original stratum thickness;

[0053] Eliminating the fault throw of the fault in the two-dimensional structural model of the seismic image file;

[0054] Fold recovery is performed on the two-dimensional structural model of the seismic image file.

[0055] On the one hand, the reservoir formation module is used to perform reservoir formation modeling on the structural profile files of different geological periods, including:

[0056] The reservoir formation module is used to import the structural section file and set the geological age of each section in the structural section file;

[0057] Dividing the structural section file into vertical blocks;

[0058] Performing gridding processing on each section in the structural section file;

[0059] Defining attributes of stratigraphic units of each section in the structural section file;

[0060] Fault parameters are configured for each stratigraphic unit in the structural section file.

[0061] On the one hand, the display module is used to display the dynamic oil and gas accumulation process of the target area based on the accumulation pictures of the target area in different geological periods, including:

[0062] The display module is used to sort the oil and gas accumulation pictures of the target area in different geological periods in chronological order to generate a target dynamic map; the target dynamic map is used to characterize the dynamic oil and gas accumulation process of the target area.

[0063] The present disclosure also provides a device for recovering the dynamic oil and gas accumulation process, comprising:

[0064] processor and memory;

[0065] The processor calls the computer program stored in the memory to execute any one of the above-mentioned methods for recovering the dynamic oil and gas accumulation process.

[0066] The present disclosure also provides a computer-readable storage medium,

[0067] The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor is enabled to execute any one of the above-mentioned methods for recovering the dynamic oil and gas accumulation process.

[0068] The present disclosure has the following beneficial effects:

[0069] The purpose of the present disclosure is to address the existing technical difficulties and current status, and to comprehensively apply technical means such as seismic interpretation, tectonic evolution history restoration, hydrocarbon accumulation process restoration and dynamic mapping in the development area of ​​reverse (thrust) faults in compression basins, especially to seamlessly link the tectonic evolution history restoration technology and the oil and gas accumulation history simulation technology, quantitatively calculate the generation-expulsion-migration-accumulation of oil and gas, and dynamically display the oil and gas accumulation process, which not only helps to understand the accumulation process of existing oil and gas reservoirs and verify the existing accumulation model, but also can predict whether oil and gas reservoirs can be formed in exploration blank areas, providing technical support for oil and gas exploration.

[0070] Other features and advantages of the present disclosure will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present disclosure. The purpose and other advantages of the present disclosure can be achieved and obtained through the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0072] Figure 1 A diagram showing a method for recovering the oil and gas dynamic accumulation process according to an embodiment of the present disclosure;

[0073] Figure 2 A diagram showing a system for recovering the oil and gas dynamic accumulation process in an embodiment of the present disclosure is shown;

[0074] Figure 3 A diagram of the oil and gas dynamic accumulation process recovery equipment in an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0075] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the present disclosure will be more comprehensive and complete and will fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced while omitting one or more of the specific details, or that other methods, components, devices, steps, etc. may be employed. In other cases, well-known technical solutions are not shown or described in detail to avoid obscuring various aspects of the present disclosure.

[0076] In addition, the accompanying drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. Identical reference numerals in the figures denote identical or similar parts, and thus repetitive descriptions thereof will be omitted. Some of the block diagrams shown in the accompanying drawings are functional entities that do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software, in one or more hardware units or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0077] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all steps. For example, some steps may be decomposed, while some steps may be combined or partially combined, so the actual execution order may change according to actual circumstances.

[0078] The terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the application described herein can, for example, be implemented in an order other than that illustrated or described herein.

[0079] In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or submodules is not necessarily limited to those steps or submodules explicitly listed, but may include other steps or submodules not explicitly listed or inherent to such process, method, product or apparatus.

[0080] like Figure 1 As shown, the present disclosure proposes a method for recovering the dynamic oil and gas accumulation process, the method comprising:

[0081] Acquire a seismic profile of a target area and determine a seismic image file of the seismic profile;

[0082] Performing two-dimensional structural modeling on the seismic image file to obtain a two-dimensional structural model of the seismic image file;

[0083] Performing structural evolution restoration on the two-dimensional structural model of the seismic image file to obtain structural section files of the seismic section image at different geological periods;

[0084] Conduct reservoir modeling on the structural profile files of different geological periods to display the reservoir formation pictures of the target area in different geological periods;

[0085] The dynamic oil and gas accumulation process of the target area is determined based on the accumulation pictures of the target area in different geological periods.

[0086] Specifically, obtaining a seismic profile of a target area and determining a seismic image file of the seismic profile include:

[0087] Combining the seismic profile with the wells in the target area to perform structural interpretation and determine a time domain profile of the seismic profile;

[0088] Performing time-depth conversion on the time-domain section of the seismic section diagram to obtain a depth-domain section of the seismic section diagram;

[0089] A seismic image file of the seismic section diagram is determined according to the depth domain profile of the seismic section diagram.

[0090] Specifically, performing two-dimensional structural modeling on the seismic image file includes:

[0091] The seismic image file is digitally interpreted, and attributes are edited, lithologic data is created and edited, and a Polygon is created to obtain a two-dimensional structural model of the seismic image file. In this embodiment, the seismic image file is imported into the Move software, and the "Fault" and "Horizon" tools are used to digitally interpret the seismic image. Then, through the steps of attribute editing, creating and editing lithologic data, and creating a Polygon, the two-dimensional structural model is completed.

[0092] Specifically, performing structural evolution restoration on the two-dimensional structural model of the seismic image file includes:

[0093] Obtaining the amount of erosion in the target area, and adding the amount of erosion to the two-dimensional structural model of the seismic image file to restore the original stratum thickness of the target area;

[0094] Determining a compaction function according to the lithology of the target area, and performing an inverse operation using the compaction function to perform a decompaction correction on the formation thickness of the target area to restore the original formation thickness;

[0095] Eliminating the fault throw of the fault in the two-dimensional structural model of the seismic image file;

[0096] Fold recovery is performed on the two-dimensional structural model of the seismic image file.

[0097] Specifically, eliminating the fault throw of the fault in the two-dimensional structural model of the seismic image file includes:

[0098] determining the fault type of the fault in the two-dimensional structural model;

[0099] Determining a fault restoration method according to the fault type of the fault, and using the fault restoration method to eliminate the fault distance of the fault;

[0100] The fault restoration method includes a fault parallel flow method.

[0101] Specifically, performing fold recovery on the two-dimensional structural model of the seismic image file includes:

[0102] The two-dimensional structural model of the seismic image file is restored by using a flexure-slip method.

[0103] In this embodiment, after completing the two-dimensional structure modeling, using the Move software to restore the structure requires four steps:

[0104] ① Restoration of erosion volume: The current stratum is the residual stratum after several (if any) erosions. The erosion volume is obtained based on existing technical means or previous research results. After adding the erosion volume, the original stratum thickness is restored;

[0105] ② De-compaction correction: During the burial process, the stratum thickness gradually decreases due to compaction. During the layer-by-layer stripping process, the compaction function determined by the lithology is used to perform inverse calculations to eliminate the compaction effect and restore the original stratum thickness.

[0106] ③ Fault restoration: This involves aligning the top boundaries of the same-age strata on the upper and lower walls of the fault to eliminate the fault throw. Different types of faults require different restoration methods, i.e., the methods for restoring normal faults, reverse faults, and slip faults are different. Reverse fault restoration uses the "Fault Parallel Flow" algorithm, which was developed specifically for complex reverse (thrust) faults. Its characteristics include: conservation of cross-sectional area and stratum length before and after restoration;

[0107] ④ Fold restoration: This involves straightening curved folds into straight lines. There are two restoration methods: "Simple Shear" and "Flexural Slip." While the former method does not conserve formation length and cross-sectional area after restoration, the latter does. Therefore, the "Flexural Slip" method is the preferred method for fold restoration.

[0108] The restoration process is repeated layer by layer, starting from the top and working downwards. Each layer is restored by repeating the above four steps. When a layer is restored, it is exported as a separate Open Teclink file (*.tec). Once all layers are restored, a series of *.tec files (tectonic profile files) representing different geological periods are generated.

[0109] Specifically, reservoir modeling is performed on the structural profile files of different geological periods, including:

[0110] Importing the structural section file, and setting the geological age of each section in the structural section file;

[0111] Dividing the structural section file into vertical blocks;

[0112] Performing gridding processing on each section in the structural section file;

[0113] Defining attributes of stratigraphic units of each section in the structural section file;

[0114] Fault parameters are configured for each stratigraphic unit in the structural section file.

[0115] In this example, using PetroMod 2D software to perform reservoir modeling requires six steps: ① importing data; ② setting profiles and stratigraphic ages; ③ creating and defining "blocks"; ④ gridding the model; ⑤ defining and configuring "facies"; and ⑥ defining fault attributes.

[0116] Specifically: ① Import data: Start the PetroBuilder module in PetroMod 2D, import the obtained series of *.tec files (structural section files) into the "new line Based Model" in sequence, click the "intoSection" drop-down list, and select "New Paleo Sections";

[0117] ② Set the section and stratigraphic age: Each section in the obtained series of sections has age significance, and the geological age is assigned to each section; and the geological age corresponding to each stratigraphic interface in each section is set;

[0118] ③ Create and define "blocks": In areas where reverse (thrust) faults develop, strata will repeat vertically. For repeated Z values, the gridding process cannot be completed. Use the "Block" function to split the section into several independent "blocks". The boundaries of the "blocks" are the fault and stratum interfaces, so that the Z value in each "block" is unique. At the same time, set the subordinate relationship between "blocks", that is, set the parent "block" and child "block" of which level a "block" belongs;

[0119] ④ Meshed model: Before running the "Simulator", each section needs to be meshed and the mesh density needs to be set. The higher the mesh density, the greater the computational effort.

[0120] ⑤ Define and configure "Facies": In "Facies," define source rocks, reservoirs, caprocks, overburden formations, underlying formations, and their respective lithologies. Then, define parameters such as the source rock's hydrocarbon generation dynamics diagram, TOC content, and hydrogen index. A profile consists of several stratigraphic units with different "Facies" attributes. Establish "Facies" types based on the above. Then, assign different "Facies" attributes to different stratigraphic units in each profile.

[0121] ⑥ Define fault properties: including the open or closed state of the fault and the corresponding geological age, SGR, FCP, Perm and other parameters (Note: SGR is the fault gouge ratio, FCP: capillary pressure in the fault zone, Perm: permeability in the fault zone).

[0122] Specifically, based on the reservoir formation pictures of the target area in different geological periods, the dynamic oil and gas accumulation process of the target area is demonstrated, including:

[0123] Thermal history simulation and correction are performed on the reservoir formation pictures of the target area in different geological periods.

[0124] In this example, the relevant parameters are first set, including boundary conditions (sediment-water interface temperature, paleo-terrestrial heat flow, etc.), operating parameters (calculation step size, oil and gas migration algorithm, whether the oil undergoes secondary cracking, etc.), and output parameters. Then, the "Simulator" is run. After the calculation is completed, the simulation results for the present-day profile are opened in the Viewer 2D module. The simulation results are verified using actual temperature measurements or measured RO data from wells located on the profile. By continuously adjusting relevant parameters (such as paleo-heat flow parameters and interface temperature), the simulation results are consistent with the measured data. The resulting simulation results are a thermal evolution history simulation that is consistent with the actual situation.

[0125] Specifically, based on the reservoir formation pictures of the target area in different geological periods, the dynamic oil and gas accumulation process of the target area is demonstrated, including:

[0126] Carry out reservoir simulation correction on the reservoir formation pictures of the target area in different geological periods.

[0127] In this example, the simulation results for the current section are re-opened in the Viewer 2D module. "Reservoirs" is selected to display the simulated reservoirs on the section and compare them with the actual oil and gas distribution. By adjusting relevant parameters (such as the oil and gas migration algorithm, source-reservoir-caprock configuration, and fault attributes), the simulation results for the discovered reservoirs are aligned with the actual current oil and gas distribution. Simulation results outside the discovered reservoirs are then considered possible reservoirs, serving as a basis for oil and gas prediction and guiding drilling deployment. The simulation results for each geological period are then exported as images.

[0128] Specifically, based on the reservoir formation pictures of the target area in different geological periods, the dynamic oil and gas accumulation process of the target area is demonstrated, including:

[0129] The oil and gas accumulation pictures of the target area in different geological periods are sorted in chronological order to generate a target dynamic map; the target dynamic map is used to characterize the dynamic oil and gas accumulation process of the target area.

[0130] like Figure 2 As shown, the present disclosure also proposes a system for recovering the dynamic oil and gas accumulation process, the system comprising:

[0131] An acquisition module is used to acquire a seismic profile of a target area and determine a seismic image file of the seismic profile;

[0132] A modeling module, configured to perform two-dimensional structural modeling on the seismic image file to obtain a two-dimensional structural model of the seismic image file;

[0133] An evolution module, configured to perform structural evolution recovery on the two-dimensional structural model of the seismic image file to obtain structural section files of the seismic section image at different geological periods;

[0134] A reservoir formation module, used to perform reservoir formation modeling on the structural profile files of different geological periods, and determine the reservoir formation pictures of the target area in different geological periods;

[0135] The display module is used to display the dynamic oil and gas accumulation process of the target area based on the accumulation pictures of the target area in different geological periods.

[0136] like Figure 3 As shown, corresponding to the oil and gas dynamic accumulation process recovery method provided above, the present disclosure also provides an oil and gas dynamic accumulation process recovery device. Since the embodiment of the device is similar to the above method embodiment, the description is relatively simple. For relevant details, please refer to the description of the above method embodiment part. The device described below is only schematic. The device may include: a processor (processor) 1, a memory (memory) 2 and a communication bus (i.e., the above device bus) and a search engine, wherein the processor 1 and the memory 2 communicate with each other through the communication bus and communicate with the outside through the communication interface. The processor 1 can call the logic instructions in the memory 2 to execute the oil and gas dynamic accumulation process recovery method.

[0137] In addition, the logic instructions in the above-mentioned memory 2 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: a memory chip, a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes.

[0138] On the other hand, an embodiment of the present disclosure also provides a processor-readable storage medium, on which a computer program 3 is stored. When the computer program 3 is executed by the processor 1, it is implemented to execute the oil and gas dynamic accumulation process recovery method provided in the above embodiments.

[0139] The processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor 1, including but not limited to magnetic storage (such as floppy disks, hard disks, tapes, magneto-optical disks (MO)), optical storage (such as CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (such as ROMs, EPROMs, EEPROMs, non-volatile memories (NANDFLASH), solid-state drives (SSDs)), etc.

[0140] Those skilled in the art should understand that although the present disclosure has been described in detail with reference to the aforementioned embodiments, it is still possible to modify the technical solutions described in the aforementioned embodiments, or to make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A method for recovering the dynamic oil and gas accumulation process, characterized in that: The method comprises: Acquire a seismic profile of a target area and determine a seismic image file of the seismic profile; Performing two-dimensional structural modeling on the seismic image file to obtain a two-dimensional structural model of the seismic image file; Performing structural evolution restoration on the two-dimensional structural model of the seismic image file to obtain structural section files of the seismic section image at different geological periods; Conduct reservoir modeling on the structural profile files of different geological periods to display the reservoir formation pictures of the target area in different geological periods; The dynamic oil and gas accumulation process of the target area is determined based on the accumulation pictures of the target area in different geological periods.

2. The method for recovering the dynamic oil and gas accumulation process according to claim 1, characterized in that: Acquiring a seismic profile of a target area and determining a seismic image file of the seismic profile include: Combining the seismic profile with the wells in the target area to perform structural interpretation and determine a time domain profile of the seismic profile; Performing time-depth conversion on the time-domain section of the seismic section diagram to obtain a depth-domain section of the seismic section diagram; A seismic image file of the seismic section diagram is determined according to the depth domain profile of the seismic section diagram.

3. The method for recovering the dynamic oil and gas accumulation process according to claim 1, characterized in that: Performing two-dimensional structural modeling on the seismic image file includes: The seismic image file is digitally interpreted, and attributes are edited, lithologic data is created and edited, and a Polygon is created to obtain a two-dimensional structural model of the seismic image file.

4. The method for recovering the dynamic oil and gas accumulation process according to claim 1, characterized in that: Performing structural evolution restoration on the two-dimensional structural model of the seismic image file includes: Obtaining the amount of erosion in the target area, and adding the amount of erosion to the two-dimensional structural model of the seismic image file to restore the original stratum thickness of the target area; Determining a compaction function according to the lithology of the target area, and performing an inverse operation using the compaction function to perform compaction correction on the stratum thickness of the target area to restore the original stratum thickness; Eliminating the fault throw of the fault in the two-dimensional structural model of the seismic image file; Fold recovery is performed on the two-dimensional structural model of the seismic image file.

5. The method for recovering the dynamic oil and gas accumulation process according to claim 4, characterized in that: Eliminating the fault throw of the fault in the two-dimensional structural model of the seismic image file includes: determining the fault type of the fault in the two-dimensional structural model; Determining a fault restoration method according to the fault type of the fault, and using the fault restoration method to eliminate the fault distance of the fault; The fault restoration method includes a fault parallel flow method.

6. The method for recovering the dynamic oil and gas accumulation process according to claim 4, characterized in that: Performing fold recovery on the two-dimensional structural model of the seismic image file includes: The two-dimensional structural model of the seismic image file is restored by using a flexure-slip method.

7. The method for recovering the dynamic oil and gas accumulation process according to claim 1, characterized in that: Perform reservoir modeling on the structural profile files of different geological periods, including: Importing the structural section file, and setting the geological age of each section in the structural section file; Dividing the structural section file into vertical blocks; Performing gridding processing on each section in the structural section file; Defining attributes of stratigraphic units of each section in the structural section file; Fault parameters are configured for each stratigraphic unit in the structural section file.

8. The method for recovering the dynamic oil and gas accumulation process according to claim 1, characterized in that: Based on the reservoir formation pictures of the target area in different geological periods, the dynamic oil and gas accumulation process of the target area is demonstrated, including: Thermal history simulation and correction are performed on the reservoir formation pictures of the target area in different geological periods.

9. The method for recovering the dynamic oil and gas accumulation process according to claim 1 or 8, characterized in that: Based on the reservoir formation pictures of the target area in different geological periods, the dynamic oil and gas accumulation process of the target area is demonstrated, including: Carry out reservoir simulation correction on the reservoir formation pictures of the target area in different geological periods.

10. The method for recovering the dynamic oil and gas accumulation process according to claim 1, characterized in that: Based on the reservoir formation pictures of the target area in different geological periods, the dynamic oil and gas accumulation process of the target area is demonstrated, including: The oil and gas accumulation pictures of the target area in different geological periods are sorted in chronological order to generate a target dynamic map; the target dynamic map is used to characterize the dynamic oil and gas accumulation process of the target area.

11. A system for recovering the dynamic oil and gas accumulation process, characterized in that: The system comprises: An acquisition module is used to acquire a seismic profile of a target area and determine a seismic image file of the seismic profile; A modeling module, configured to perform two-dimensional structural modeling on the seismic image file to obtain a two-dimensional structural model of the seismic image file; An evolution module, configured to perform structural evolution recovery on the two-dimensional structural model of the seismic image file to obtain structural section files of the seismic section image at different geological periods; A reservoir formation module, used to perform reservoir formation modeling on the structural profile files of different geological periods, and determine the reservoir formation pictures of the target area in different geological periods; The display module is used to display the dynamic oil and gas accumulation process of the target area based on the accumulation pictures of the target area in different geological periods.

12. The oil and gas dynamic accumulation process recovery system according to claim 11, characterized in that: The acquisition module is used to acquire a seismic profile of a target area and determine a seismic image file of the seismic profile, including: The acquisition module is used to combine the seismic profile with the wells in the target area to perform structural interpretation and determine the time domain profile of the seismic profile; Performing time-depth conversion on the time-domain section of the seismic section diagram to obtain a depth-domain section of the seismic section diagram; A seismic image file of the seismic section diagram is determined according to the depth domain profile of the seismic section diagram.

13. The oil and gas dynamic accumulation process recovery system according to claim 11, characterized in that: The modeling module is used to perform two-dimensional structural modeling on the seismic image file, including: The modeling module is used to digitally interpret the seismic image file, edit attributes, create and edit lithologic data, and create Polygons to obtain a two-dimensional structural model of the seismic image file.

14. The oil and gas dynamic accumulation process recovery system according to claim 11, characterized in that: The evolution module is used to restore the structural evolution of the two-dimensional structural model of the seismic image file, including: The evolution module is used to obtain the erosion amount of the target area and add the erosion amount to the two-dimensional structural model of the seismic image file to restore the original stratum thickness of the target area; Determining a compaction function according to the lithology of the target area, and performing an inverse operation using the compaction function to perform compaction correction on the stratum thickness of the target area to restore the original stratum thickness; Eliminating the fault throw of the fault in the two-dimensional structural model of the seismic image file; Fold recovery is performed on the two-dimensional structural model of the seismic image file.

15. The oil and gas dynamic accumulation process recovery system according to claim 11, characterized in that: The reservoir formation module is used to perform reservoir formation modeling on the structural profile files of different geological periods, including: The reservoir formation module is used to import the structural section file and set the geological age of each section in the structural section file; Dividing the structural section file into vertical blocks; Performing gridding processing on each section in the structural section file; Defining attributes of stratigraphic units of each section in the structural section file; Fault parameters are configured for each stratigraphic unit in the structural section file.

16. The oil and gas dynamic accumulation process recovery system according to claim 11, characterized in that: The display module is used to display the dynamic oil and gas accumulation process of the target area based on the accumulation pictures of the target area in different geological periods, including: The display module is used to sort the oil and gas accumulation pictures of the target area in different geological periods in chronological order to generate a target dynamic map; the target dynamic map is used to characterize the dynamic oil and gas accumulation process of the target area.

17. An oil and gas dynamic accumulation process recovery device, characterized in that: include: processor and memory; The processor calls the computer program stored in the memory to execute the oil and gas dynamic accumulation process recovery method according to any one of claims 1 to 10.

18. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor is enabled to execute the oil and gas dynamic accumulation process recovery method according to any one of claims 1 to 10.

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