A palaeogeographic restoration method and device, electronic equipment and storage medium

Abstract

Embodiments of the present application disclose a palaeogeographic restoration method and device, electronic equipment and a storage medium. The method comprises: obtaining multi-beam sounding data of a target area, determining topographic and geomorphic features and micro-geomorphic unit types of the target area according to the multi-beam sounding data; the target area comprising an island reef and an island reef slope area; constructing a seismic sequence stratigraphic framework according to drilling data and seismic profiles of the target area, and determining sedimentary facies types of the target area according to seismic reflection characteristics under the constraint of the seismic sequence stratigraphic framework; analyzing the sedimentary facies to determine characteristic information of sedimentary facies in different periods; and performing palaeogeographic restoration on a to-be-restored area according to a corresponding relationship between the characteristic information of the sedimentary facies in different periods and the topographic and geomorphic features. According to the present application, sedimentary evolution characteristics in different geological history periods since the development of the island reef and its slope area are determined, and the sedimentary environment evolution mechanism is analyzed, thereby completing the palaeogeographic restoration work of the island reef slope area.

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 reconstruction method, apparatus, electronic device and storage medium. Background Technology

[0002] Islands and reefs are hill-shaped uplifts formed by the accumulation of carbonate rocks, exhibiting an isolated external form. They are directly connected to near-vertical cliffs, with the surrounding perimeter forming island and reef slopes. Due to differences in sedimentary origin, material composition, and marine hydrodynamics, the sedimentary processes in island and reef slope areas differ from those in siliceous clastic slopes. The sedimentary processes occurring in island and reef areas and their surrounding slopes are of great significance for studying the evolutionary history of carbonate rocks. The hydrocarbon-bearing potential of sedimentary layers is closely related to paleogeographic distribution. Studying the sedimentary evolution history and paleogeographic characteristics of the island and reef perimeter since the Paleogene period helps to clarify the paleogeographic changes in the study area and provides guidance for new oil and gas exploration areas.

[0003] The upper slopes of carbonate platforms are riddled with gullies, typically formed by carbonate turbidity currents or debris flows. Downslopes, influenced by gravity flows, can form channel complexes and canyons, mixing with semi-deep-sea sediments. Due to the complexity of sedimentary processes in and around carbonate platforms, the sedimentary evolution and paleogeographic distribution between platforms, platform slopes, and deep-water basins require further clarification. Paleogeographic reconstruction on land utilizes extensive core, logging, paleontological, well logging, and seismic data for comprehensive interpretation and analysis. However, offshore drilling requires advanced technology and is costly, especially in deep-sea areas where drilling and logging data are scarce or nonexistent.

[0004] Therefore, how to restore the paleogeography of marine areas is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] This invention provides a paleogeographic restoration method, apparatus, electronic device, and storage medium to determine the sedimentary evolution characteristics of islands and reefs and their slope areas during different geological periods since their initial development, and then analyze the sedimentary environment evolution mechanism to complete the paleogeographic restoration of island and reef slope areas.

[0006] In a first aspect, embodiments of the present invention provide a paleogeographic restoration method, comprising:

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

[0008] Based on drilling data and seismic profiles of the target area, a seismic sequence stratigraphic framework is constructed, and the sedimentary facies type of the target area is determined based on seismic reflection characteristics under the constraints of the seismic sequence stratigraphic framework.

[0009] The sedimentary facies are analyzed to determine the characteristic information of sedimentary facies in different periods; the characteristic information includes the morphology, structural features and spatiotemporal distribution patterns of the sedimentary facies.

[0010] Based on the correspondence between the characteristic information of sedimentary facies in different periods and the topographic features, paleogeographic reconstruction of the area to be restored is carried out.

[0011] Secondly, embodiments of the present invention also provide a paleogeographic restoration device, comprising:

[0012] The micro-geomorphic unit morphology determination module is used to acquire multibeam bathymetry data of the target area and determine the topographic features and micro-geomorphic unit types of the target area based on the multibeam bathymetry data; the target area includes islands and reefs and island and reef slope areas.

[0013] The seismic sequence stratigraphy framework constraint module is used to construct a seismic sequence stratigraphy framework based on drilling data and seismic profiles of the target area, and to determine the sedimentary facies type of the target area based on seismic reflection characteristics under the constraint of the seismic sequence stratigraphy framework.

[0014] The sedimentary facies characteristic information determination module is used to analyze sedimentary facies and determine the characteristic information of sedimentary facies at different periods; the characteristic information includes sedimentary facies morphology, structural features, and spatiotemporal distribution patterns;

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

[0016] Thirdly, embodiments of the present invention also provide an electronic device, the electronic device comprising:

[0017] One or more processors;

[0018] 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] Fourthly, embodiments of the present invention also provide 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] Fifthly, embodiments of the present invention also provide a computer program product, including a computer program that, when executed by a processor, implements the paleogeographic restoration method as described in any embodiment of the present invention.

[0022] This invention provides a paleogeographic reconstruction method, apparatus, electronic device, and storage medium. By acquiring multibeam bathymetry data of islands and reefs and their slopes, the topographic features and micro-geomorphic unit types of the target area are determined. A seismic sequence stratigraphic framework is constructed based on drilling data and seismic profiles of the target area, and sedimentary facies types are determined based on seismic reflection characteristics under the constraints of this framework. The sedimentary facies are analyzed to determine their morphology, structural characteristics, and spatiotemporal distribution patterns at different times. Based on the correspondence between the characteristic information of the sedimentary facies at different times and the topographic features, paleogeographic reconstruction of the area to be reconstructed is performed. Using the technical solution of this invention, the sedimentary evolution process of islands and reefs and their slopes at different geological historical periods since their initial development is determined, and the mechanism of sedimentary environmental evolution is analyzed, thereby completing the paleogeographic reconstruction of island and reef slope areas. Attached Figure Description

[0023] Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. The drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0024] Figure 1 This is a flowchart of a paleogeographic restoration method provided in Embodiment 1 of the present invention;

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

[0026] Figure 3 This is a schematic diagram of a seismic sequence division of a target area provided in Embodiment 2 of the present invention;

[0027] Figure 4 This is a schematic diagram of the seismic reflection characteristics of a typical seafloor micro-geomorphic unit and sedimentary facies provided in Embodiment 2 of the present invention;

[0028] Figure 5 This is a schematic diagram of a paleogeomorphological-sedimentary facies development model provided in Embodiment 2 of the present invention;

[0029] Figure 6 This is a flowchart of another paleogeographic restoration method provided in Embodiment 2 of the present invention;

[0030] Figure 7This is a schematic diagram of an Early Miocene-Quaternary paleogeographic reconstruction provided in Embodiment 2 of the present invention;

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

[0032] Figure 9 This is a schematic diagram of the structure of an electronic device provided in Embodiment 4 of the present invention. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[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 flowcharts. Although the flowcharts describe the operations (or steps) as sequential processes, many of the operations (or steps) may be performed in parallel, concurrently, or simultaneously. Furthermore, the order of the operations may be rearranged. The process may be terminated when its operation is completed, but may also have additional steps not included in the figures. The process may correspond to a method, function, procedure, subroutine, subroutine, etc.

[0035] The acquisition, storage, use, and processing of data in this application comply with relevant national laws and regulations. It should be noted that existing industry solutions such as software, components, or models may be mentioned in the embodiments of this application. These should be considered exemplary and intended only to illustrate the feasibility of implementing the technical solution of this application, but do not imply that the applicant has already used or necessarily used such a solution.

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

[0037] Example 1

[0038] Figure 1This is a flowchart of a paleogeographic restoration method provided in this embodiment of the 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. Obtain multibeam bathymetry data of the target area, and determine the topographic features and micro-topographic unit types of the target area based on the multibeam bathymetry data.

[0040] The target area includes islands and reefs and their slopes. In this embodiment of the invention, multibeam bathymetry data from the islands and reefs and their slopes are used to interpret the topographic features of the target area, clarifying the types, characteristics, and distribution range of its micro-geomorphic units.

[0041] Multibeam echo sounder data refers to data obtained by simultaneously emitting multiple sound waves in all directions from the transmitter of a multibeam echo sounder. These sound waves bounce off the seabed and return to the receiver, which receives the rebounding sound waves, converts them into electrical signals, and then transmits them through a data transmission system to a data processing system for processing. Multibeam echo sounder data can be used to obtain information including, but not limited to, information about altitude, water depth, and slope.

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

[0043] In this embodiment of the invention, parameters of the seabed topography are obtained through multibeam bathymetry data to divide the seabed into geomorphic units. Each geomorphic unit has specific morphological characteristics and material composition, constituting a geomorphic shape. These geomorphic shapes form different geomorphic systems according to their structural features, sedimentary characteristics, and genesis. Different geomorphic systems are spatially arranged and combined within a region to form a regional geomorphic structure, which can reflect the characteristics of the regional sedimentary environment. For example, by processing multibeam bathymetry data, a three-dimensional image of the seabed topography can be generated, clearly displaying seabed geomorphic features such as mountains, canyons, plains, and other terrains, as well as information such as the location of underwater objects, such as shipwrecks and reefs.

[0044] S120. 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.

[0045] Among them, the seismic sequence stratigraphic framework groups strata formed at the same time together and performs isochronous stratigraphic correlation within the temporal stratigraphic framework. First, seismic interfaces are identified and delineated based on drilling data of the target area, and these seismic interfaces serve as the boundaries separating different stratigraphic eras within the stratigraphic framework.

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

[0047] Sedimentary facies is the sum of the formation environment, conditions, and characteristics of sediments. Rocks with the same composition form the same facies, and those in the same geographical region form the same group. Sedimentary facies are mainly divided into terrestrial facies, marine-terrestrial transitional facies, and marine facies, which depend primarily on the formation environment of these rocks. Identifying these rocks relies not only on their ancient formation environment and rock composition and structure, but also on the fossils of organisms and microorganisms they contain. Terrestrial facies generally include desert facies, glacial facies, fluvial facies, lacustrine facies, swamp facies, and cave facies, etc.

[0048] In this embodiment of the invention, seismic interfaces are identified and delineated based on drilling data and seismic profiles of the target area, and these seismic interfaces are used as the boundaries separating different ages within the stratigraphic framework. Under the constraint of the seismic sequence stratigraphic framework, the sedimentary facies types of different ages in the target area are determined based on seismic reflection characteristics.

[0049] S130. Analyze the sedimentary facies to determine the characteristic information of sedimentary facies in different periods.

[0050] Sedimentary facies analysis refers to the method of studying the environment and conditions during the formation of sediments. By analyzing the characteristics of sediments, paleogeographic environments can be reconstructed and the genesis of sediments can be understood. This is of great significance for understanding geological history and resource exploration.

[0051] In this embodiment of the invention, sedimentary facies in the target area are analyzed to determine the characteristic information of sedimentary facies from different periods. The characteristic information includes, but is not limited to, sedimentary facies morphology, structural features, and spatiotemporal distribution patterns.

[0052] S140. Based on the correspondence between the characteristic information of sedimentary facies in different periods and the topographic features, paleogeographic restoration is carried out on the area to be restored.

[0053] Specifically, paleogeographic reconstruction of the area to be reconstructed is carried out based on the correspondence between the characteristic information of sedimentary facies from different periods and the characteristics of different topographic features. For example, the morphology of the target micro-geomorphic unit in the area to be reconstructed is determined, thereby determining the corresponding topographic features and sedimentary facies characteristics of the corresponding period, in order to carry out paleogeographic reconstruction of the area to be reconstructed.

[0054] This invention provides a paleogeographic reconstruction method. It involves acquiring multibeam bathymetry data of a target area, determining its topographic features and micro-geomorphic unit types based on this data, and identifying the target area, including islands, reefs, and their slopes. A seismic sequence stratigraphic framework is constructed based on well data and seismic profiles of the target area. Under the constraints of this framework, sedimentary facies types are determined based on seismic reflection characteristics. The sedimentary facies are analyzed to determine characteristic information of sedimentary facies from different periods. This characteristic information includes sedimentary facies morphology, structural features, and spatiotemporal distribution patterns. Based on the correspondence between the characteristic information of sedimentary facies from different periods and topographic features, paleogeographic reconstruction of the area to be reconstructed is performed. Using the technical solution of this invention, the sedimentary evolution process of islands, reefs, and their slopes since their initial development in different geological periods is determined, and the evolution mechanism of the sedimentary environment is analyzed, thereby completing the paleogeographic reconstruction of island and reef slope areas.

[0055] Example 2

[0056] Figure 2 This is a flowchart illustrating a paleogeographic restoration method provided in an embodiment of the present invention. The embodiments of the present invention further optimize the aforementioned embodiments, and can be combined with various optional solutions from one or more of the above embodiments. For example... Figure 2 As shown, the paleogeographic restoration method provided in this embodiment of the invention may include the following steps:

[0057] S210. Obtain multibeam bathymetry data of the target area, and determine the topographic features and micro-topographic unit types of the target area based on the multibeam bathymetry data.

[0058] In this embodiment of the invention, the topographic features and micro-topographic unit types of the target area are determined by acquiring multibeam bathymetry data of the target area.

[0059] As an optional but non-limiting implementation, the acquisition of multibeam bathymetry data of the target area, and the determination of the topographic features and micro-topographic unit types of the target area based on the multibeam bathymetry data, includes, but is not limited to, steps A1-A2:

[0060] Step A1: Collect multibeam bathymetry data for the target area.

[0061] Step A2: Based on the multibeam bathymetry data, interpret the topographic features of the target area and determine the micro-topographic unit type, micro-topographic unit type characteristics, and distribution range of the target area.

[0062] Micro-geomorphic units are defined by parameters of the seabed topography, including but not limited to elevation, isobaths, slope lines, gradient, and shape. Micro-geomorphic units in the target area include, but are not limited to, seamounts, sea platforms (plateaus), islands and reefs (atolls, lagoons), ocean valleys, canyons, ravines, and slopes.

[0063] In one optional embodiment of the present invention, multibeam bathymetry data and seismic profile data of islands and their slope areas are collected and organized to establish the target area; using the multibeam bathymetry data of islands and their slope areas, the topographic and geomorphic types of the target area are interpreted to clarify the morphology and distribution range of its micro-geomorphic units.

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

[0065] Based on the collected drilling data from islands and reefs, a seismic sequence stratigraphic framework for the target area was constructed.

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

[0067] Step B1: Based on the drilling data and seismic reflection characteristics of the target area, track the seismic reflection interface.

[0068] Step B2: Based on the seismic reflection interface tracking results, the seismic sequence of the target area is divided.

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

[0070] Based on seismic reflection characteristics and contact relationships, and combined with drilling data from Xichen 1 and Xike 1 wells, seismic reflection interfaces were continuously tracked to delineate seismic sequences and construct a seismic sequence stratigraphic framework for the target area.

[0071] S230. Under the constraints of the seismic sequence stratigraphy framework, seismic horizon tracking interpretation is performed based on seismic reflection characteristics.

[0072] The seismic reflection characteristics include, but are not limited to, the phase, amplitude, and frequency of the reflected seismic waves. See also... Figure 3 The target area was traced to include the seismic interface T. g Interface T6, Interface T5, Interface T3, Interface T2, Interface T1 and Seabed T0.

[0073] S240. Determine the stratigraphic sequence and seismic facies type of the target area based on seismic reflection characteristics, and characterize the seismic facies features and planar distribution of seismic facies.

[0074] This invention determines the stratigraphic sequence and seismic facies type of a target area based on seismic reflection characteristics, and characterizes the seismic facies features and their planar distribution. For example, seismic facies types are classified based on visually identifiable reflection characteristics such as the structure, shape, amplitude, frequency, and continuity of reflected wave groups on the cross-section.

[0075] S250. 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.

[0076] Based on multibeam bathymetry data, this invention interprets typical seafloor micro-geomorphic unit types in the study area, including platforms, channels, canyons, seamounts, and ocean valleys. Through seismic data interpretation, and following the technical process of sequence-seismic facies-sedimentary facies analysis, various typical sedimentary types were identified in the study area, including bioherm deposits, scour channel groups, large canyons, massive transported composite deposits, annular channels, and drift deposits.

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

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

[0079] Repeatedly determine the sequence-seismic facies interpretation results and the corresponding sedimentary facies types, determine the sedimentary facies types of different periods, and the sedimentary facies morphology, structural characteristics and spatiotemporal distribution patterns corresponding to the sedimentary facies types of different periods.

[0080] Different regions may contain sedimentary facies from different periods. In this embodiment of the invention, the sequence-seismic facies interpretation results and the corresponding sedimentary facies types of different regions are repeatedly determined to identify the sedimentary facies types of different periods and the sedimentary facies morphology, structural characteristics and spatiotemporal distribution patterns corresponding to the sedimentary facies types of different periods.

[0081] S270. Based on the correspondence between the characteristic information of sedimentary facies in different periods and the topographic features, paleogeographic restoration is carried out on the area to be restored.

[0082] Based on the correspondence between the characteristic information of sedimentary facies from different periods and the topographic features, paleogeographic reconstruction is carried out on the area to be restored, such as... Figure 4 The diagram illustrates the correspondence between submarine trench topography and channel sedimentary facies. See also... Figure 5Using a method of interpreting the past through the present, this study deduces paleogeographic features by interpreting present-day seafloor geomorphological units. Based on seismic profile interpretation and analysis of geological environmental changes, the study area shows reefs and lagoons distributed on the platform. The upper slope of the platform features densely packed channels of varying sizes, while the lower slope of the platform contains two large canyons, one to the north and one to the south, extending into the Jinyinhai Valley. Since the Early Miocene, the platform slope area has shown the development of block-transported sedimentary bodies, channel filling, and bioherms of varying sizes. The north and south canyons began to develop in the Pliocene.

[0083] As an optional but non-limiting implementation, the paleogeographic reconstruction of the area to be reconstructed is performed based on the correspondence between the characteristic information of sedimentary facies from different periods and the topographic features, including but not limited to steps C1-C2:

[0084] Step C1: Based on the characteristic information of sedimentary facies in different periods and topographic features, determine the corresponding configuration relationship between sedimentary facies types and micro-geomorphic unit morphology in different periods.

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

[0086] Among them, see Figure 6 After determining the characteristic information of sedimentary facies in different periods, the corresponding configuration relationship between sedimentary facies types and micro-geomorphic unit morphology in different periods is determined; when performing paleogeographic restoration of the area to be restored, paleogeographic restoration of the area to be restored is carried out based on the corresponding configuration relationship and the target micro-geomorphic unit morphology of the area to be restored.

[0087] Taking the paleogeography of the area to be restored as early Miocene-Quaternary paleogeography as an example, see [reference needed]. Figure 7 ,in Figure 7 a is an early to middle Miocene paleogeographic map. The base area of ​​the reef growth is relatively large, and the reef development is relatively limited. On the high slopes of the north side of Yongle Platform and Huaguang Platform, there are scattered small channels that cut the seabed along the slope towards NW.

[0088] Figure 7 b is a paleogeographic map of the Middle Miocene, showing that the distribution range of bioherms expanded compared to the Early Miocene, and the number of waterways developed on the north side of the Yongle Platform and the north side of the Huaguang Platform increased.

[0089] Figure 7 c is a paleogeographic map of the Late Miocene, showing a decline in bioherm development, with bioherms only distributed in higher tectonic areas. The number of waterways developed on the north side of the Yongle Platform and the north side of the Huaguang Platform continued to increase.

[0090] Figure 7d is a paleogeographic map of the Pliocene. The growth rate of bioherms slowed down compared to the Late Miocene, and they only developed in higher structural areas. The number of waterways on the high slopes of the northern side of the Yongle Platform and the northern side of the Huaguang Platform continued to increase. A north canyon running southwest was formed on the northwest side of the Yongle Platform, and a south canyon running southwest developed between the south side of the Yongle Platform and the northwest side of the Huaguang Platform.

[0091] Figure 7 e is a Quaternary paleogeographic map. Only in some parts of the reef at the top of the platform do bioherms continue to grow, forming atolls. There are many waterways developed on the north side of Yongle Platform and the north side of Huaguang Platform, forming an intersecting waterway network that extends northwestward and connects with the northern and southern canyons respectively. The two canyons continue to extend southwestward and flow into the Jinyinhai Valley.

[0092] This invention provides a paleogeographic reconstruction method. By interpreting seafloor micro-topographic units and delineating their distribution range, combined with seismic data interpretation, and utilizing a sequence-seismic-sedimentary facies analysis workflow, it identifies sedimentary facies types, characterizes sedimentary facies features, and clarifies the spatiotemporal distribution of sedimentary facies zones. Following a point-line-surface-volume study area approach, it combines micro-topography with sedimentation analysis to construct spatial correspondence scenarios between landforms and sedimentary processes, establishing paleogeographic environmental models for different sedimentary periods. This method addresses the problem of scarce marine drilling data due to high drilling costs in deep-sea areas and the difficulty of drilling in special sea areas. The technical solution of this invention has good applicability in marine paleogeographic reconstruction and is of significant importance to oil and gas exploration.

[0093] Example 3

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

[0095] The micro-topographic unit morphology determination module 1010 is used to acquire multibeam bathymetry data of the target area and determine the topographic features and micro-topographic unit types of the target area based on the multibeam bathymetry data; the target area includes islands and reefs and island and reef slope areas.

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

[0097] The sedimentary facies characteristic information determination module 1030 is used to analyze sedimentary facies and determine the characteristic information of sedimentary facies in different periods; the characteristic information includes sedimentary facies morphology, structural characteristics, and spatiotemporal distribution patterns.

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

[0099] Based on the above embodiments, optionally, the micro-topographic unit morphology determination module is specifically used for:

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

[0101] Based on the multibeam bathymetry data, the topographic features of the target area are interpreted, and the morphology and distribution range of the micro-topographic units in the target area are determined.

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

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

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

[0105] Based on the seismic reflection characteristics, the sequence of layers and seismic facies types of the target area are determined, and the seismic facies characteristics and planar distribution of seismic facies are characterized.

[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 embodiments, optionally, the seismic sequence stratigraphic framework constraint module is further specifically used for:

[0108] Based on drilling data and seismic profiles of the target area, the seismic reflection interface is traced;

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

[0110] Based on the seismic sequence stratigraphy results, a seismic sequence stratigraphic framework for the target area is constructed.

[0111] Based on the above embodiments, optionally, the sedimentary facies characteristic information determination module is specifically used for:

[0112] Repeatedly determine the sequence-seismic facies interpretation results and the corresponding sedimentary facies types, determine the sedimentary facies types of different periods, and the sedimentary facies morphology, structural characteristics and spatiotemporal distribution patterns corresponding to the sedimentary facies types of different periods.

[0113] Based on the above embodiments, optionally, the paleogeographic restoration module is specifically used for:

[0114] Based on the characteristic information of sedimentary facies in different periods and topographic features, the corresponding configuration relationship between sedimentary facies types and micro-geomorphic unit morphology in different periods is determined;

[0115] The morphology of the target micro-geomorphic units in the area to be restored is determined, and paleogeographic restoration of the area to be restored is carried out based on the corresponding configuration relationship.

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

[0117] Example 4

[0118] Figure 9 This 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 processors, cellular phones, smartphones, 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 illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0119] like Figure 9As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 may also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

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

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

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

[0123] Various embodiments 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-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0124] Computer programs used to implement 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, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0125] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0126] To provide interaction with a user, the systems and techniques described herein can 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 pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0127] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0128] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0129] Example 5

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

[0131] In implementing the computer program product, computer program code for performing the operations of this invention can be written in one or more programming languages ​​or a combination thereof. Programming languages ​​include object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0132] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0133] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A paleogeographic reconstruction method, characterized in that, The method includes: Acquire multibeam bathymetry data of the target area, and determine the topographic features and micro-topographic unit types of the target area based on the multibeam bathymetry data; the target area includes islands and reefs and island and reef slope areas; Based on drilling data and seismic profiles of the target area, a seismic sequence stratigraphic framework is constructed, and the sedimentary facies type of the target area is determined based on seismic reflection characteristics under the constraints of the seismic sequence stratigraphic framework. The seismic sequence stratigraphic framework groups strata formed at the same time together and performs isochronous stratigraphic correlation within the temporal stratigraphic framework. The sedimentary facies are analyzed to determine the characteristic information of sedimentary facies in different periods; the characteristic information includes the morphology, structural features and spatiotemporal distribution patterns of the sedimentary facies. Based on the correspondence between the characteristic information of sedimentary facies in different periods and the topographic features, paleogeographic reconstruction is carried out on the area to be restored. The step of constructing a seismic sequence stratigraphic framework based on 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 profiles of the target area; Under the constraints of the seismic sequence stratigraphy framework, seismic horizon tracing interpretation is performed based on seismic reflection characteristics; wherein, the seismic reflection characteristics include the phase, amplitude, and frequency of the seismic reflected wave; Based on the seismic reflection characteristics, the sequence of layers and seismic facies types of the target area are determined, and the seismic facies characteristics and planar distribution of seismic facies are characterized. 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.

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

3. The method according to claim 1, characterized in that, The construction of a seismic sequence stratigraphic framework based on drilling data and seismic profiles of the target area includes: Based on drilling data and seismic profiles of the target area, the seismic reflection interface is traced; Based on the seismic reflection interface tracking results, the seismic sequence of the target area is divided; Based on the seismic sequence stratigraphy results, a seismic sequence stratigraphic framework for the target area is constructed.

4. The method according to claim 1, characterized in that, The analysis of sedimentary facies to determine the characteristic information of sedimentary facies at different periods includes: Repeatedly determine the sequence-seismic facies interpretation results and the corresponding sedimentary facies types, determine the sedimentary facies types of different periods, and the sedimentary facies morphology, structural characteristics and spatiotemporal distribution patterns corresponding to the sedimentary facies types of different periods.

5. The method according to claim 1, characterized in that, The paleogeographic reconstruction of the area to be reconstructed, based on the correspondence between the characteristic information of sedimentary facies from different periods and the topographic features, includes: Based on the characteristic information of sedimentary facies in different periods and topographic features, the corresponding configuration relationship between sedimentary facies types and micro-geomorphic unit morphology in different periods is determined; The morphology of the target micro-geomorphic units in the area to be restored is determined, and paleogeographic restoration of the area to be restored is carried out based on the corresponding configuration relationship.

6. A paleogeographic reconstruction device, characterized in that, The device includes: The micro-geomorphic unit morphology determination module is used to acquire multibeam bathymetry data of the target area and determine the topographic features and micro-geomorphic unit types of the target area based on the multibeam bathymetry data; the target area includes islands and reefs and island and reef slope areas. The seismic sequence stratigraphy framework constraint module is used to construct a seismic sequence stratigraphy framework based on drilling data and seismic profiles of the target area, and to determine the sedimentary facies type of the target area based on seismic reflection characteristics under the constraint of the seismic sequence stratigraphy framework; wherein, the seismic sequence stratigraphy framework groups strata formed at the same time together and performs isochronous stratigraphic correlation in the temporal stratigraphy framework. The sedimentary facies characteristic information determination module is used to analyze sedimentary facies and determine the characteristic information of sedimentary facies at different periods; the characteristic information includes sedimentary facies morphology, structural features, and spatiotemporal distribution patterns; The paleogeographic restoration module is used to perform paleogeographic restoration of the area to be restored based on the correspondence between the characteristic information of sedimentary facies in different periods and the topographic features. The seismic sequence stratigraphic framework constraint module is specifically used for: Construct a seismic sequence stratigraphic framework based on drilling data and seismic profiles of the target area; Under the constraints of the seismic sequence stratigraphy framework, seismic horizon tracing interpretation is performed based on seismic reflection characteristics; wherein, the seismic reflection characteristics include the phase, amplitude, and frequency of the seismic reflected wave; Based on the seismic reflection characteristics, the sequence of layers and seismic facies types of the target area are determined, and the seismic facies characteristics and planar distribution of seismic facies are characterized. 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.

7. An electronic device, characterized in that, include: One or more processors; 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 according to any one of claims 1-5.

8. A storage medium containing computer-executable instructions, characterized in that, The computer-executable instructions, when executed by a computer processor, are used to perform the paleogeographic restoration method as described in any one of claims 1-5.

9. A computer program product comprising a computer program that, when executed by a processor, implements the paleogeographic restoration method according to any one of claims 1-5.

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