Paleogeography recovery method and device, electronic equipment and storage medium

Abstract

The embodiment of the invention discloses a paleogeography recovery method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring multi-beam sounding data of a target area, and determining landform features and micro-landform unit types of the target area according to the multi-beam sounding data; the target area comprises an island reef and an island reef slope area; constructing a seismic sequence stratigraphic framework according to the drilling data and the seismic section of the target area, and determining the sedimentary facies type of the target area according to the seismic reflection characteristics under the constraint of the seismic sequence stratigraphic framework; analyzing the sedimentary facies, and determining feature information of the sedimentary facies in different periods; and according to the corresponding relationship between the feature information of the sedimentary facies in different periods and the landform features, performing paleogeography restoration on the to-be-restored region. By adopting the scheme, the sedimentary evolution characteristics of the island and the slope area of the island in different geological historical periods are determined since the island and the slope area start to develop, and then the sedimentary environment evolution mechanism is analyzed, so that the paleogeography recovery work of the slope area of the island is completed.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of oil and gas exploration technology, and in particular to a paleogeographic restoration method, device, electronic equipment and storage medium. Background Art

[0002] Islands and reefs are hill-like uplifts formed by the accumulation of carbonate rocks. They have an isolated external shape. They are directly connected to nearly vertical cliffs, and the surrounding edges are connected to the island and reef slopes. Due to differences in sediment sources, material composition, and ocean hydrodynamics, the sedimentary process in the island and reef slope area is different from that in the siliceous clastic slope. The sedimentary process occurring in the island and reef and surrounding slope areas is of great significance for studying the evolutionary history of carbonate rocks. The oil and gas content of the sedimentary layer is closely related to the paleogeographic distribution. By studying the sedimentary evolution history and paleogeographic characteristics of the island and reef periphery since the Paleogene, it is helpful to clarify the paleogeographic changes in the study area and provide guidance for new areas of oil and gas exploration.

[0003] The upper slope area of ​​the carbonate platform is full of grooves, which are usually formed by carbonate turbidity currents or debris flows; the downward slope area can form waterway complexes and canyon channels due to gravity flow, and mix with semi-deep-sea sediments. Due to the complexity of carbonate platform and peripheral sedimentation, the sedimentary evolution process and paleogeographic distribution between platforms, platform slopes and deep-water basins need to be clearly understood. The paleogeographic reconstruction method on land is to use a large amount of drilling core, logging, paleontology, logging and seismic data for comprehensive interpretation and analysis to complete the paleogeographic reconstruction. However, drilling technology in the ocean requires high drilling costs and is expensive, especially in deep-sea areas, where drilling and logging data are particularly scarce or blank.

[0004] Therefore, how to restore the paleogeography of the sea area is a technical problem that needs to be solved urgently by technicians in this field. Summary of the invention

[0005] The embodiments of the present invention provide a paleogeographic restoration method, device, electronic device and storage medium to determine the sedimentary evolution characteristics of islands and reefs and their slope areas in different geological historical periods since the development began, and then analyze the sedimentary environment evolution mechanism, so as to complete the paleogeographic restoration of island and reef slope areas.

[0006] In a first aspect, an embodiment of the present invention provides a paleogeographic restoration method, comprising:

[0007] Acquire multi-beam bathymetric data of the target area, and determine the topographic and geomorphic features and micro-geomorphic unit types of the target area based on the multi-beam bathymetric data; the target area includes islands and reefs and island and reef slope areas;

[0008] Construct a seismic sequence stratigraphic framework based on drilling data and seismic profiles in the target area, and determine the sedimentary facies type of the target area based on seismic reflection characteristics under the constraints of the seismic sequence stratigraphic framework;

[0009] Analyze the sedimentary phases to determine the characteristic information of the sedimentary phases in different periods; the characteristic information includes the sedimentary phase morphology, structural characteristics and temporal and spatial distribution rules;

[0010] Based on the correspondence between the characteristic information of sedimentary phases in different periods and the topographic and geomorphic characteristics, paleogeographic restoration is carried out on the area to be restored.

[0011] In a second aspect, an embodiment of the present invention further provides a paleogeographic restoration device, comprising:

[0012] A micro-geomorphic unit morphology determination module is used to obtain multi-beam bathymetric data of a target area, and determine the topographical features and micro-geomorphic unit types of the target area based on the multi-beam bathymetric data; the target area includes islands and reefs and island and reef slope areas;

[0013] Seismic sequence stratigraphic framework constraint module, used to construct a seismic sequence stratigraphic framework based on drilling data and seismic profiles in the target area, and determine the sedimentary facies type of the target area based on seismic reflection characteristics under the constraints of the seismic sequence stratigraphic framework;

[0014] A sedimentary phase characteristic information determination module is used to analyze the sedimentary phase and determine the characteristic information of the sedimentary phase in different periods; the characteristic information includes the sedimentary phase morphology, structural characteristics and temporal and spatial distribution law;

[0015] The paleogeographic restoration module is used to perform paleogeographic restoration on the area to be restored based on the correspondence between the characteristic information of the sedimentary phases in different periods and the topographic and geomorphic characteristics.

[0016] In a third aspect, an embodiment of the present invention further provides an electronic device, the electronic device comprising:

[0017] one or more processors;

[0018] A storage device for storing one or more programs;

[0019] When the one or more programs are executed by the one or more processors, the one or more processors implement the paleogeographic restoration method described in any embodiment of the present invention.

[0020] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the paleogeographic restoration method described in any embodiment of the present invention.

[0021] In a fifth aspect, an embodiment of the present invention further provides a computer program product, including a computer program, which, when executed by a processor, implements the paleogeographic restoration method as described in any embodiment of the present invention.

[0022] The embodiment of the present invention provides a paleogeographic restoration method, device, electronic device and storage medium. The method determines the topographic and geomorphic features and micro-geomorphic unit types of the target area by acquiring multi-beam bathymetric data of the islands and reefs and the island and reef slope areas; constructs a seismic sequence stratigraphic framework based on the drilling data and seismic profiles of the target area, and determines the sedimentary phase type of the target area based on the seismic reflection characteristics under the constraints of the seismic sequence stratigraphic framework; analyzes the sedimentary phases to determine the sedimentary phase morphology, structural characteristics and temporal and spatial distribution laws of the sedimentary phases in different periods; and performs paleogeographic restoration on the area to be restored based on the correspondence between the characteristic information of the sedimentary phases in different periods and the topographic and geomorphic features. The technical solution of the embodiment of the present invention is used to determine the sedimentary evolution process in different geological history periods since the development of the islands and reefs and their slope areas, and then analyzes the sedimentary environment evolution mechanism, thereby completing the paleogeographic restoration of the island and reef slope area. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings. The drawings are only for the purpose of illustrating preferred embodiments and are not to be considered as limiting the present invention. Also, the same reference symbols are used throughout the drawings to represent the same parts. In the drawings:

[0024] Figure 1 is a flow chart of a paleogeographic restoration method provided in Example 1 of the present invention;

[0025] Figure 2 is a flow chart of a paleogeographic restoration method provided in Embodiment 2 of the present invention;

[0026] Figure 3 This is a schematic diagram of seismic sequence division of a target area provided in the second embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of a typical seafloor micro-geomorphological unit and sedimentary phase seismic reflection characteristics provided by the second embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of a paleo-geomorphology-sedimentary phase development model provided in the second embodiment of the present invention;

[0029] Figure 6 is a flow chart of another paleogeographic restoration method provided by Embodiment 2 of the present invention;

[0030] Figure 7This is a schematic diagram of early Miocene-Quaternary paleogeography restoration provided by Example 2 of the present invention;

[0031] Figure 8 It is a structural schematic diagram of a paleogeographic restoration device provided in Embodiment 3 of the present invention;

[0032] Fig. 9 It is a structural schematic diagram of an electronic device provided in Embodiment 4 of the present invention. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0034] Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow charts describe the operations (or steps) as sequential processes, many of the operations (or steps) therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of the operations can be rearranged. The process can be terminated when its operation is completed, but can also have additional steps not included in the accompanying drawings. The process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0035] Among them, the acquisition, storage, use and processing of data in the technical solution of this application are in compliance with the relevant provisions of national laws and regulations. It should be noted that in the embodiments of this application, some existing solutions in the industry such as certain software, components or models may be mentioned, which should be considered as exemplary, and their purpose is only to illustrate the feasibility of the implementation of the technical solution of this application, but it does not mean that the applicant has or will necessarily use the solution.

[0036] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0037] Embodiment 1

[0038] Figure 1This is a flow chart of a paleogeographic restoration method provided in an embodiment of the present invention. This embodiment is applicable to paleogeographic restoration. The method of this embodiment can be executed by a paleogeographic restoration device, which can be implemented in hardware and / or software. The device can be configured in a paleogeographic restoration server. The method specifically includes the following steps:

[0039] S110, acquiring multi-beam bathymetric data of the target area, and determining the topographic features and micro-topographic unit types of the target area according to the multi-beam bathymetric data.

[0040] The target area includes islands and reefs and island and reef slope areas. In the embodiment of the present invention, the multi-beam bathymetric data of islands and reefs and their slope areas are used to interpret the topographic and geomorphic features of the target area and clarify the types, features and distribution range of its micro-geomorphic units.

[0041] Multi-beam bathymetric data refers to the data obtained by transmitting multiple sound waves to the surroundings through the transmitter of the multi-beam bathymetric instrument at the same time. These sound waves hit the bottom of the water and bounce back to the receiver. The receiver receives and converts the bounced sound waves into electrical signals, which are then transmitted to the data processing system through the data transmission system for processing. The multi-beam bathymetric data can be obtained including but not limited to information reflecting altitude, water depth, slope, etc.

[0042] Micro-geomorphology is a relatively small-scale landform, and is also the smallest landform unit. Micro-geomorphology units include but are not limited to seamounts, platforms (plateaus), islands and reefs (atolls, lagoons), sea valleys, canyons, gullies, and slopes.

[0043] In the embodiment of the present invention, the parameters of the seabed topography are obtained through multi-beam bathymetric data to divide the geomorphic units; each geomorphic unit has specific morphological characteristics and material composition, forming a geomorphic body. These geomorphic bodies form different geomorphic systems according to their structural characteristics, sedimentary characteristics and genesis, and different geomorphic systems are spatially arranged and combined in the region to form a regional geomorphic structure, which can reflect the characteristics of the regional sedimentary environment. For example, by processing multi-beam bathymetric data, a three-dimensional image of the seabed topography can be generated, clearly showing the seabed topographic features, such as various terrains such as mountains, canyons, and plains, as well as information such as the location of underwater objects, such as the location information of shipwrecks and reefs.

[0044] S120. Construct a seismic sequence stratigraphic framework based on the drilling data and seismic profiles of the target area, and determine the sedimentary facies type of the target area based on seismic reflection characteristics under the constraints of the seismic sequence stratigraphic framework.

[0045] Among them, the seismic sequence stratigraphic framework groups rock layers formed in the same era together and conducts isochronous stratigraphic correlation in the time stratigraphic framework. First, the seismic interface is identified and delineated based on the drilling data of the target area, and the seismic interface is used as the interface separating different eras in the stratigraphic framework.

[0046] Seismic reflection is a key parameter in seismic stratigraphy, which is crucial for analyzing and interpreting seismic data and can help identify and compare different strata and rock types. The seismic reflection includes but is not limited to the phase, amplitude, frequency and continuity of seismic reflection waves.

[0047] Sedimentary facies is the sum of the formation environment, formation conditions and characteristics of sediments. Rocks with the same composition form the same facies, and those in the same geographical area form the same group. Sedimentary facies are mainly divided into terrestrial facies, marine-continental transitional facies and marine facies, which mainly depend on the formation environment of these rocks. The identification of these rocks depends not only on their ancient formation environment and the composition and structure of the rocks, but also on the fossils of organisms and microorganisms contained therein. Terrestrial facies generally include desert facies, glacial facies, river facies, lake facies, swamp facies and cave facies.

[0048] In the embodiment of the present invention, the seismic interface is delineated based on the drilling data and seismic profile identification of the target area, and the seismic interface is used as the interface separating different eras of the stratigraphic framework. Under the constraints of the seismic sequence stratigraphic framework, the sedimentary phase types of different eras in the target area are determined based on the seismic reflection characteristics.

[0049] S130, analyzing the sedimentary phases to determine characteristic information of the sedimentary phases in different periods.

[0050] Among them, sedimentary phase analysis can refer to the method of studying the environment and conditions when sediments were formed. By analyzing the characteristics of sediments, the paleogeographic environment can be reconstructed and the causes of sediments can be understood, which is of great significance for understanding geological history and resource exploration.

[0051] In the embodiment of the present invention, the sedimentary phases of the target area are analyzed to determine the characteristic information of the sedimentary phases in different periods. The characteristic information includes but is not limited to the sedimentary phase morphology, structural characteristics and temporal and spatial distribution rules.

[0052] S140, performing paleogeographic restoration on the area to be restored based on the correspondence between the characteristic information of the sedimentary phases in different periods and the topographic and geomorphic characteristics.

[0053] According to the correspondence between the characteristic information of the sedimentary phases in different periods and the different topographic and geomorphic features, paleogeographic restoration is performed on the area to be restored. For example, the target micro-geomorphic unit morphology of the area to be restored is determined, so as to determine the corresponding topographic and geomorphic features and the characteristic information of the sedimentary phases in the corresponding period, so as to perform paleogeographic restoration on the area to be restored.

[0054] The embodiment of the present invention provides a paleogeographic restoration method, which obtains multi-beam bathymetric data of the target area, determines the topographic and geomorphic features and micro-geomorphic unit types of the target area based on the multi-beam bathymetric data; the target area includes islands and reefs and island and reef slope areas; constructs a seismic sequence stratigraphic framework based on drilling data and seismic profiles of the target area, and determines the sedimentary phase type of the target area based on seismic reflection characteristics under the constraints of the seismic sequence stratigraphic framework; analyzes the sedimentary phases to determine the characteristic information of the sedimentary phases in different periods; the characteristic information includes sedimentary phase morphology, structural characteristics and temporal and spatial distribution laws; paleogeographic restoration is performed on the area to be restored based on the correspondence between the characteristic information of the sedimentary phases in different periods and the topographic and geomorphic features. The technical solution of the embodiment of the present invention is adopted to determine the sedimentary evolution process in different geological history periods since the development of islands and reefs and their slope areas, and then analyzes the sedimentary environment evolution mechanism, thereby completing the paleogeographic restoration of the island and reef slope area.

[0055] Embodiment 2

[0056] Figure 2 Flow chart of a paleogeographic restoration method provided in an embodiment of the present invention. The embodiment of the present invention further optimizes the above embodiment on the basis of the above embodiment, and the embodiment of the present invention can be combined with various optional solutions in one or more of the above embodiments. Figure 2 As shown, the paleogeographic restoration method provided in the embodiment of the present invention may include the following steps:

[0057] S210, acquiring multi-beam bathymetric data of the target area, and determining the topographic features and micro-topographic unit types of the target area based on the multi-beam bathymetric data.

[0058] Among them, in the embodiment of the present invention, the topographic features and micro-topographic unit types of the target area are determined by acquiring multi-beam bathymetric data of the target area.

[0059] As an optional but non-limiting implementation, the step of acquiring multi-beam bathymetric data of the target area and determining the topographic features and micro-topographic unit types of the target area based on the multi-beam bathymetric data includes but is not limited to steps A1-A2:

[0060] Step A1: Collect multibeam bathymetric data of the target area.

[0061] Step A2: interpreting the topographic features of the target area based on the multi-beam bathymetric data, and determining the micro-topographic unit type, micro-topographic unit type characteristics and distribution range of the target area.

[0062] Micro-geomorphic units are divided by the parameters of the seabed topography, including but not limited to altitude, isobaths, slope lines, slopes and shapes. The micro-geomorphic units of the target area include but are not limited to seamounts, platforms (tables), islands and reefs (atolls, lagoons), sea valleys, canyons, gullies and slopes.

[0063] In an optional scheme of an embodiment of the present invention, multi-beam bathymetric data and seismic profile data of islands, reefs and their slope areas are collected and organized to establish a target area; the multi-beam bathymetric data of islands, reefs and their slope areas are used to interpret the topographic and geomorphic types of the target area, and to clarify the morphology of its micro-geomorphic units and their distribution range.

[0064] S220. Construct a seismic sequence stratigraphic framework based on the drilling data and seismic profiles of the target area.

[0065] Among them, the seismic sequence stratigraphic framework of the target area is constructed based on the drilling data collected on the islands and reefs.

[0066] As an optional but non-limiting implementation, the construction of a seismic sequence stratigraphic framework based on drilling data and seismic profiles in the target area includes but is not limited to steps B1-B3:

[0067] Step B1: Track the seismic reflection interface based on the drilling data and seismic reflection characteristics of the target area.

[0068] Step B2: Divide the seismic sequence of the target area according to the seismic reflection interface tracking results.

[0069] Step B3: Based on the seismic sequence division results, construct the seismic sequence stratigraphic framework of the target area.

[0070] Among them, according to the seismic reflection characteristics and contact relationship, combined with the drilling data of Xichen 1 well and Xike 1 well, the seismic reflection interface is continuously tracked, the seismic sequence is divided and the seismic sequence stratigraphic framework of the target area is constructed.

[0071] S230. Under the constraints of the seismic sequence stratigraphic framework, seismic layer tracing and interpretation are performed based on seismic reflection characteristics.

[0072] The seismic reflection characteristics include but are not limited to the phase, amplitude and frequency of the seismic reflection wave. Figure 3 , the target area tracks the seismic interface including interface T g , interface T6, interface T5, interface T3, interface T2, interface T1 and seabed T0.

[0073] S240. Determine the stratigraphic sequence and seismic phase type of the target area according to the seismic reflection characteristics, and characterize the seismic phase characteristics and the plane distribution of the seismic phase.

[0074] The embodiment of the present invention determines the stratigraphic sequence and seismic phase type of the target area according to the seismic reflection characteristics, and describes the seismic phase characteristics and the plane distribution of the seismic phase. For example, the seismic phase type is divided according to the reflection wave group structure, shape, amplitude, frequency and continuity on the profile, which can be qualitatively identified by the naked eye.

[0075] S250, determining a sequence-seismic facies interpretation result, and determining a sedimentary facies type of a target area based on the sequence-seismic facies interpretation result.

[0076] The embodiment of the present invention interprets the typical micro-geomorphological unit types of the seabed in the study area based on multi-beam bathymetric data, including platforms, trenches, canyons, seamounts and valleys; through seismic data interpretation, according to the technical process method of sequence-seismic phase-sedimentary phase analysis, a variety of typical sedimentary types are identified in the study area, including reef deposits, scour channel groups, large canyons, massive transport composite deposits, troughs and drift bodies.

[0077] S260. Analyze the sedimentary phases to determine the characteristic information of the sedimentary phases in different periods.

[0078] As an optional but non-limiting implementation, the analysis of the sedimentary phases to determine the characteristic information of the sedimentary phases in different periods includes:

[0079] Repeatedly determine the sequence-seismic phase interpretation results and the corresponding sedimentary phase types, determine the sedimentary phase types of different periods, and the sedimentary phase morphology, structural characteristics and temporal and spatial distribution laws corresponding to the sedimentary phase types of different periods.

[0080] Among them, different regions may have sedimentary phases of different periods. The embodiment of the present invention repeatedly determines the sequence-seismic phase interpretation results and the corresponding sedimentary phase types of different regions to determine the sedimentary phase types of different periods and the sedimentary phase morphology, structural characteristics and temporal and spatial distribution laws corresponding to the sedimentary phase types of different periods.

[0081] S270. Perform paleogeographic restoration on the area to be restored based on the correspondence between the characteristic information of the sedimentary phases in different periods and the topographic and geomorphic characteristics.

[0082] Among them, according to the correspondence between the characteristic information of sedimentary phases in different periods and the topographic and geomorphic characteristics, paleogeographic restoration is carried out in the area to be restored, such as Figure 4 The corresponding interpretation of the submarine trench landforms and channel sedimentary facies is shown. Figure 5, using the method of inferring the past from the present, through the interpretation of the current seafloor geomorphic units, the ancient geomorphic features are inferred; according to the interpretation of seismic profiles and the analysis of geological environmental changes, there are reefs and lagoons distributed on the platform in the study area, and there are dense grooves of different sizes on the slope area of ​​the platform. There are two large canyons distributed in the north and south of the platform in the slope area, which extend all the way into the Jinyin Sea Valley. Since the Early Miocene, the platform slope area has developed block transport composite sediments, waterway filling and different scales of bioherms, and the north-south canyons began to develop in the Pliocene.

[0083] As an optional but non-limiting implementation method, the paleogeographic restoration of the area to be restored is performed based on the correspondence between the characteristic information of the sedimentary phases in different periods and the topographic and geomorphic characteristics, including but not limited to steps C1-C2:

[0084] Step C1: Determine the corresponding configuration relationship between the sedimentary facies types in different periods and the micro-geomorphological unit morphology based on the characteristic information of the sedimentary facies in different periods and the topographic and geomorphological characteristics.

[0085] Step C2: Determine the target micro-geomorphological unit morphology of the area to be restored, and perform paleogeographic restoration on the area to be restored based on the corresponding configuration relationship.

[0086] Among them, see Figure 6 After determining the characteristic information of sedimentary phases in different periods, the corresponding configuration relationship between sedimentary phase types in different periods and the morphology of micro-geomorphological units is determined; when performing paleo-geomorphological restoration on the area to be restored, paleo-geographic restoration is performed on the area to be restored based on the corresponding configuration relationship and the target micro-geomorphological unit morphology of the area to be restored.

[0087] Taking the restoration of the paleogeography of the area to be restored to the Early Miocene-Quaternary paleogeography as an example, see Figure 7 ,in Figure 7 a is the paleogeographic map of the Early Miocene. The basement area of ​​the reef growth is relatively large, and the reef body development is relatively limited. There are sporadic small waterways on the high slopes of the north side of the Yongle Platform and the north side of the Huaguang Platform, which extend along the slope and cut the seabed in the NW direction.

[0088] Figure 7 b is the paleogeographic map of the Middle Miocene. The distribution range of bioherms has expanded compared with the Early Miocene, and the number of water channels developed on the north side of the Yongle Platform and the north side of the Huaguang Platform has increased.

[0089] Figure 7 c is the paleogeographic map of the late Miocene, in which the development of bioherms declined and was only distributed to higher parts of the structure. The number of water channels on the north side of the Yongle Platform and the north side of the Huaguang Platform continued to increase.

[0090] Figure 7d is the paleogeographic map of the Pliocene. The growth rate of bioherms is slower than that of the late Miocene and they only develop in higher parts of the structure. The number of water channels developed in the high slopes of the north side of the Yongle Platform and the north side of the Huaguang Platform continues to increase. A northern canyon with a southwest trend is formed on the northwest side of the Yongle Platform, and a southern canyon with a southwest trend develops between the south side of the Yongle Platform and the northwest side of the Huaguang Platform.

[0091] Figure 7 e is the Quaternary paleogeographic map. Only in the local reef disk on the top of the platform do bioherms continue to grow to form atolls. A large number of waterways are developed on the north side of the Yongle platform and the north side of the Huaguang platform, forming an interlaced waterway group that extends northwest and connects with the northern canyon and southern canyon respectively. The two canyons continue to extend southwestward and merge into the Jinyin Sea Valley.

[0092] The embodiment of the present invention provides a paleogeographic restoration method, which interprets the seabed micro-geomorphological units and delineates their distribution range, and interprets seismic data, and uses the technical process of sequence-seismic phase-sedimentary phase analysis to identify sedimentary phase types, characterize sedimentary phase characteristics, and clarify the spatial and temporal distribution of sedimentary phase belts. From the research area of ​​point-line-surface-body, the micro-geomorphology and sedimentation are combined for analysis, and the spatial correspondence scene of the geomorphology and sedimentation process is built to establish paleogeographic environment models of different sedimentary periods. The problem of scarce drilling data in the sea area due to factors such as high drilling costs in deep sea areas and great difficulty in drilling in special sea areas is solved. The technical solution of the embodiment of the present invention has good promotion in the direction of paleogeographic restoration in the sea area, and is of great significance to oil and gas exploration.

[0093] Embodiment 3

[0094] Figure 8 : is a schematic diagram of the structure of a paleogeographic restoration device provided in an embodiment of the present invention. The technical solution of this embodiment can be applied to paleogeographic restoration. The device can be implemented by software and / or hardware and is generally integrated on any electronic device with network communication function, including but not limited to: servers, computers, personal digital assistants and other devices. Figure 8 As shown, the paleogeographic restoration device provided in this embodiment may include: a micro-geomorphological unit morphology determination module 1010, a seismic sequence stratigraphic framework constraint module 1020, a sedimentary facies characteristic information determination module 1030 and a paleogeographic restoration module 1040; wherein,

[0095] The micro-geomorphology unit morphology determination module 1010 is used to obtain multi-beam bathymetric data of the target area, and determine the topographic and geomorphological characteristics of the target area and the type of micro-geomorphology unit according to the multi-beam bathymetric data; the target area includes islands and reefs and island and reef slope areas;

[0096] A seismic sequence stratigraphic framework constraint module 1020 is used to construct a seismic sequence stratigraphic framework based on drilling data and seismic profiles of the target area, and determine the sedimentary facies type of the target area based on seismic reflection characteristics under the constraints of the seismic sequence stratigraphic framework;

[0097] Sedimentary phase characteristic information determination module 1030, used to analyze the sedimentary phase and determine the characteristic information of the sedimentary phase in different periods; the characteristic information includes sedimentary phase morphology, structural characteristics and temporal and spatial distribution law;

[0098] The paleogeographic restoration module 1040 is used to perform paleogeographic restoration on the area to be restored based on the correspondence between the characteristic information of the sedimentary phases in different periods and the topographic and geomorphic characteristics.

[0099] Based on the above embodiment, optionally, the micro-relief unit morphology determination module is specifically used to:

[0100] Collect multibeam bathymetric data of the target area;

[0101] The topographic and geomorphic features of the target area are interpreted based on the multi-beam bathymetric data, and the micro-topographic unit morphology and distribution range of the target area are determined.

[0102] Based on the above embodiment, optionally, the seismic sequence stratigraphic framework constraint module is specifically used to:

[0103] Construct a seismic sequence stratigraphic framework based on drilling data and seismic sections in the target area;

[0104] Under the constraints of the seismic sequence stratigraphic framework, seismic horizon tracing interpretation is performed based on seismic reflection characteristics, wherein the seismic reflection characteristics include seismic reflection wave phase, amplitude and frequency;

[0105] Determine the stratigraphic sequence and seismic facies type of the target area based on seismic reflection characteristics, and characterize the seismic facies characteristics and plane distribution of seismic facies;

[0106] Determine the sequence-seismic facies interpretation results, and determine the sedimentary facies type of the target area based on the sequence-seismic facies interpretation results.

[0107] Based on the above embodiment, optionally, the seismic sequence stratigraphic framework constraint module is further specifically used for:

[0108] Track the seismic reflection interface based on the drilling data and seismic profiles in the target area;

[0109] Based on the results of seismic reflection interface tracking, the seismic sequence of the target area is divided;

[0110] Based on the results of seismic sequence division, the seismic sequence stratigraphic framework of the target area is constructed.

[0111] Based on the above embodiment, optionally, the sedimentary phase characteristic information determination module is specifically used to:

[0112] Repeatedly determine the sequence-seismic phase interpretation results and the corresponding sedimentary phase types, determine the sedimentary phase types of different periods, and the sedimentary phase morphology, structural characteristics and temporal and spatial distribution laws corresponding to the sedimentary phase types of different periods.

[0113] Based on the above embodiment, optionally, the paleogeography restoration module is specifically used to:

[0114] According to the characteristic information of sedimentary phases in different periods and the topographic and geomorphic characteristics, the corresponding configuration relationship between the sedimentary phase types in different periods and the micro-geomorphic unit morphology is determined;

[0115] The target micro-geomorphological unit morphology of the area to be restored is determined, and paleogeographic restoration of the area to be restored is performed based on the corresponding configuration relationship.

[0116] The paleogeographic restoration device provided in the embodiment of the present invention can execute the paleogeographic restoration method provided in any embodiment of the present invention mentioned above, and has the corresponding functions and beneficial effects of executing the paleogeographic restoration method. For detailed processes, please refer to the relevant operations of the paleogeographic restoration method in the aforementioned embodiments.

[0117] Embodiment 4

[0118] Fig. 9 1 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. The electronic device 10 is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0119] like Fig. 9As shown, the electronic device 10 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0120] A number of components in the electronic device 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0121] The processor 11 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 performs the various methods and processes described above, such as paleogeographic restoration methods.

[0122] In some embodiments, the paleogeographic restoration method may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the paleogeographic restoration method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the paleogeographic restoration method in any other appropriate manner (e.g., by means of firmware).

[0123] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0124] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0125] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, 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 of the foregoing.

[0126] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0127] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0128] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0129] Embodiment 5

[0130] An embodiment of the present invention also provides a computer program product, including a computer program, which, when executed by a processor, implements the paleogeographic restoration method provided in any embodiment of the present application.

[0131] In the process of implementation, the computer program product can be written in one or more programming languages ​​or a combination thereof to perform the computer program code of the present invention, including object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (for example, using an Internet service provider to connect through the Internet).

[0132] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0133] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A paleogeographic restoration method, characterized in that: The method comprises: Acquire multi-beam bathymetric data of the target area, and determine the topographic and geomorphic features and micro-geomorphic unit types of the target area based on the multi-beam bathymetric data; the target area includes islands and reefs and island and reef slope areas; Construct a seismic sequence stratigraphic framework based on drilling data and seismic profiles in the target area, and determine the sedimentary facies type of the target area based on seismic reflection characteristics under the constraints of the seismic sequence stratigraphic framework; Analyze the sedimentary phases to determine the characteristic information of the sedimentary phases in different periods; the characteristic information includes the sedimentary phase morphology, structural characteristics and temporal and spatial distribution rules; Based on the correspondence between the characteristic information of sedimentary phases in different periods and the topographic and geomorphic characteristics, paleogeographic restoration is carried out on the area to be restored.

2. The method according to claim 1, characterized in that The step of acquiring multi-beam bathymetric data of the target area and determining the topographic features and micro-topographic unit types of the target area according to the multi-beam bathymetric data includes: Collect multibeam bathymetric data of the target area; The topographic and geomorphic features of the target area are interpreted based on the multi-beam bathymetric data, and the micro-geomorphic unit type, micro-geomorphic unit type characteristics and distribution range of the target area are determined.

3. The method according to claim 1, characterized in that The method of constructing a seismic sequence stratigraphic framework based on the drilling data and seismic profiles of the target area, and determining the sedimentary facies type of the target area based on seismic reflection characteristics under the constraints of the seismic sequence stratigraphic framework, includes: Construct a seismic sequence stratigraphic framework based on drilling data and seismic sections in the target area; Under the constraints of the seismic sequence stratigraphic framework, seismic horizon tracing interpretation is performed based on seismic reflection characteristics, wherein the seismic reflection characteristics include seismic reflection wave phase, amplitude and frequency; Determine the stratigraphic sequence and seismic facies type of the target area based on seismic reflection characteristics, and characterize the seismic facies characteristics and plane distribution of seismic facies; Determine the sequence-seismic facies interpretation results, and determine the sedimentary facies type of the target area based on the sequence-seismic facies interpretation results.

4. The method according to claim 3, characterized in that The method of constructing a seismic sequence stratigraphic framework based on the drilling data and seismic profiles of the target area includes: Track the seismic reflection interface based on the drilling data and seismic profiles in the target area; Based on the results of seismic reflection interface tracking, the seismic sequence of the target area is divided; Based on the results of seismic sequence division, the seismic sequence stratigraphic framework of the target area is constructed.

5. The method according to claim 1, characterized in that: The analysis of the sedimentary phases to determine the characteristic information of the sedimentary phases in different periods includes: Repeatedly determine the sequence-seismic phase interpretation results and the corresponding sedimentary phase types, determine the sedimentary phase types of different periods, and the sedimentary phase morphology, structural characteristics and temporal and spatial distribution laws corresponding to the sedimentary phase types of different periods.

6. The method according to claim 1, characterized in that According to the correspondence between the characteristic information of the sedimentary phases in different periods and the topographic and geomorphic characteristics, paleogeographic restoration of the area to be restored includes: According to the characteristic information of sedimentary phases in different periods and the topographic and geomorphic characteristics, the corresponding configuration relationship between the sedimentary phase types in different periods and the micro-geomorphic unit morphology is determined; The target micro-geomorphological unit morphology of the area to be restored is determined, and paleogeographic restoration of the area to be restored is performed based on the corresponding configuration relationship.

7. A paleogeographic restoration device, characterized in that: The device comprises: A micro-geomorphic unit morphology determination module is used to obtain multi-beam bathymetric data of a target area, and determine the topographic and geomorphic features of the target area and the type of micro-geomorphic unit based on the multi-beam bathymetric data; the target area includes islands and reefs and island and reef slope areas; Seismic sequence stratigraphic framework constraint module, used to construct a seismic sequence stratigraphic framework based on drilling data and seismic profiles in the target area, and determine the sedimentary facies type of the target area based on seismic reflection characteristics under the constraints of the seismic sequence stratigraphic framework; A sedimentary phase characteristic information determination module is used to analyze the sedimentary phase and determine the characteristic information of the sedimentary phase in different periods; the characteristic information includes the sedimentary phase morphology, structural characteristics and temporal and spatial distribution law; The paleogeographic restoration module is used to perform paleogeographic restoration on the area to be restored based on the correspondence between the characteristic information of the sedimentary phases in different periods and the topographic and geomorphic characteristics.

8. An electronic device, characterized in that: include: one or more processors; A storage device for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the paleogeographic restoration method described in any one of claims 1-6.

9. A storage medium containing computer executable instructions, characterized in that: The computer executable instructions are used to perform the paleogeographic restoration method as described in any one of claims 1-6 when executed by a computer processor.

10. A computer program product, comprising a computer program, which, when executed by a processor, implements the paleogeographic restoration method according to any one of claims 1 to 6.

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