Method and device for discriminating volcanic eruption paleogeographical environment

Abstract

The invention discloses a volcanic eruption paleogeographical environment discrimination method and device. The method comprises the steps that knowledge of geological experts is collected, and a knowledge base is built; carrying out fine interpretation on the volcanic rock core by comprehensively utilizing seismic data; according to the seismic reflection features, comparing the seismic reflection features with the seismic reflection features in a knowledge base to identify seismic reflection units; the volcanic eruption paleogeographical environment is directly discriminated according to an earthquake reflection unit constructed based on three factors of development scale-geometric morphology-internal structure of a volcanic institution. According to the method, the volcanic eruption paleogeographical environment can be directly discriminated by utilizing seismic data, and the underground environment is easier to discriminate.

Description

Technical Field

[0001] The present invention relates to the technical field of oil and gas exploration and development, and more specifically to a method and device for distinguishing the paleogeographic environment of volcanic eruption. Background Art

[0002] The formation and evolution of sedimentary basins are often accompanied by magmatic events. Among them, volcanic eruption event sedimentation is of great significance to the study of sedimentary basin filling evolution, and can also be used as one of the targets of underground oil and gas exploration and development. The paleogeographic environment of volcanic rock eruption has important scientific research value in the understanding of the formation environment of underground volcanic rocks in the oil and gas exploration evaluation stage. However, it is difficult to identify and distinguish underground conditions, and it is a huge challenge to directly determine its formation environment using seismic data. Therefore, it is necessary to create an effective identification method suitable for the paleogeographic environment of underground volcanic rock eruption. Summary of the invention

[0003] In view of the above problems, the present invention is proposed to provide a method and device for distinguishing the paleogeographic environment of volcanic eruptions that overcome the above problems or at least partially solve the above problems.

[0004] In a first aspect, an embodiment of the present invention provides a method for identifying a paleogeographic environment of a volcanic eruption, comprising:

[0005] Comprehensive use of core, drilling and seismic data to carry out detailed interpretation and constrain the distribution range of volcanic rocks;

[0006] Describe the seismic reflection units in detail according to their seismic reflection characteristics, and classify them into types;

[0007] The type of volcanic structure is determined based on the type of seismic reflection unit classification, and the paleogeographic environment of volcanic rock eruption is determined based on the seismic reflection characteristics of the volcanic structure type.

[0008] In one embodiment, the comprehensive use of core, drilling and seismic data to carry out detailed interpretation includes:

[0009] Through the geological data of cores and drillings and the data provided by seismic exploration, the volcanic rock cores are depth-corrected and calibrated to the curve generated by the logging data set. The development position of the volcanic rock on the seismic profile is determined based on the synthetic seismic records of the aforementioned geological data of cores and drillings and the data provided by seismic exploration, the top and bottom interface depths of the volcanic rock at the well point in the vertical direction of the seismic profile are determined, and the seismic reflection layer interface positions corresponding to the top and bottom interfaces of the volcanic rock are obtained;

[0010] According to the seismic reflection layer interfaces corresponding to the top and bottom interfaces of the above-mentioned volcanic rocks, three-dimensional seismic layer tracking and interpretation are carried out to form a top and bottom interface structure map to constrain the spatial distribution range of the volcanic rocks.

[0011] In one embodiment, the detailed description of the seismic reflection unit according to the seismic reflection characteristics includes:

[0012] The seismic reflection unit is described in detail, including the following aspects: development scale, internal reflection structure and external geometric characteristics.

[0013] In one embodiment, classifying the seismic reflection units into types includes:

[0014] According to the seismic reflection characteristics in the expert knowledge base, the seismic reflection unit type to which the seismic reflection unit belongs is determined; the seismic reflection unit types include: high-angle progradational inclined reflection unit, low-angle imbricate progradational seismic unit, S-type progradational inclined reflection seismic unit, parallel-subparallel layered seismic unit, mound-shaped reflection seismic unit and bow-shaped reflection seismic unit.

[0015] In one embodiment, the expert knowledge base is obtained by:

[0016] According to the confirmed underground ancient volcano seismic volcanic structure types and modern volcanic structure types at home and abroad, a knowledge base system based on the volcanic structure characteristics sorted out by experts is established. The knowledge base system clarifies the correspondence between the underground ancient volcano seismic volcanic structure types and the seismic reflection characteristics of the modern volcanic structure types and the paleogeographic environment of volcanic eruption;

[0017] The above-mentioned paleogeographic environments of volcanic rock eruption include: above-water formation environment, underwater formation environment and transitional environment.

[0018] In one embodiment, the volcanic structure type is determined according to the type determined by the seismic reflection unit, and the volcanic eruption paleogeographic environment is determined according to the seismic reflection characteristics of the volcanic structure type, including:

[0019] Establish the correspondence between the seismic reflection unit and the volcanic structure type in the expert knowledge base through the seismic reflection unit to identify the volcanic structure type;

[0020] Then, through the volcanic structure type, the paleogeographic environment of volcanic rock eruption is judged according to the correspondence between the underground ancient volcanic earthquake volcanic structure type and the modern volcanic structure type in the expert knowledge base and the paleogeographic environment of volcanic rock eruption.

[0021] In one embodiment, the correspondence between the seismic reflection unit and the volcanic structure type in the expert knowledge base includes:

[0022] The correspondence between the development scale, internal structure and geometric characteristics of the seismic reflection unit and the type of volcanic structure.

[0023] In a second aspect, an embodiment of the present invention provides a device for distinguishing a paleogeographic environment of a volcanic eruption, comprising:

[0024] The detailed interpretation module is used to carry out detailed interpretation using core, drilling and seismic data;

[0025] An information processing module is used to describe the seismic reflection unit in detail according to the seismic reflection characteristics and classify the seismic reflection units into types;

[0026] The environment identification module is used to identify the type of volcanic structure according to the seismic reflection unit, and to identify the formation environment of volcanic rocks according to the type of volcanic structure.

[0027] In a third aspect, an embodiment of the present invention provides a computing device comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the program executed by the processor implements the method for distinguishing the paleogeographic environment of volcanic eruption.

[0028] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for distinguishing the paleogeographic environment of volcanic eruption is implemented.

[0029] The beneficial effects of the above technical solution provided by the embodiment of the present invention include at least:

[0030] The method and device for distinguishing the paleogeographic environment of volcanic eruption provided by the embodiment of the present invention comprehensively utilizes core, drilling and seismic data to carry out detailed interpretation and constrain the distribution range of volcanic rocks; describes the seismic reflection unit in detail according to the seismic reflection characteristics, and classifies the seismic reflection unit into types; distinguishes the type of volcanic structure according to the type of seismic reflection unit, and distinguishes the formation environment of volcanic rocks according to the type of volcanic structure. The embodiment of the present invention proposes a new method for quickly distinguishing the paleogeographic environment of volcanic eruption based on the three factors of "development scale-internal structure-geometric shape" of volcanic structure, which reduces the difficulty of identifying and distinguishing the formation environment under underground conditions, and has important practical significance in the exploration and evaluation stage of oil and gas fields.

[0031] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description, claims, and drawings.

[0032] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0034] Figure 1 A flow chart of a method for distinguishing the paleogeographic environment of volcanic eruption provided by an embodiment of the present invention;

[0035] Figure 2 A seismic reflection layer interface position map provided by an embodiment of the present invention;

[0036] Figure 3 A seismic reflection layer interface map provided by an embodiment of the present invention;

[0037] Figure 4 Flow chart of an embodiment provided for an embodiment of the present invention;

[0038] Figure 5 A structural block diagram of a device for identifying a paleogeographic environment of a volcanic eruption provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0039] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0040] In order to solve the problem that it is difficult to identify the paleogeographic environment of volcanic eruption by underground conditions in the prior art, the present invention provides a method for identifying the paleogeographic environment of volcanic eruption, and its flow chart is shown in FIG. Figure 1 As shown, the following steps are included:

[0041] Step S11, comprehensively utilizing core, drilling and seismic data to conduct detailed interpretation and constrain the distribution range of volcanic rocks;

[0042] Step S12, describing the seismic reflection units in detail according to the seismic reflection characteristics, and classifying the seismic reflection units into types;

[0043] Step S13: Determine the type of volcanic structure according to the type of seismic reflection unit classification, and determine the paleogeographic environment of volcanic rock eruption according to the seismic reflection characteristics of the volcanic structure type.

[0044] Furthermore, in the above step S11, the core, drilling and seismic data are comprehensively utilized to carry out detailed interpretation. Specifically, the volcanic rock core is depth-corrected and calibrated to the curve generated by the logging data set through the geological data of the core and drilling and the data provided by the seismic exploration. The development position of the volcanic rock on the seismic profile is determined based on the synthetic seismic record of the geological data of the core and drilling and the data provided by the seismic exploration, and the seismic detailed interpretation is carried out to constrain the spatial distribution range of the volcanic rock.

[0045] Through the geological data of cores and drillings and the data provided by seismic exploration, the volcanic rock cores are depth-corrected and calibrated to the curve generated by the logging data set. The development position of the volcanic rock on the seismic profile is determined based on the synthetic seismic records of the aforementioned geological data of cores and drillings and the data provided by seismic exploration. The top and bottom interface depths of the volcanic rock at the well point in the vertical direction of the seismic profile are determined, and the seismic reflection layer interface positions corresponding to the top and bottom interfaces of the volcanic rock are obtained, such as Figure 2 shown.

[0046] Figure 2 Among them, the seismic records of Well 1 confirmed the top surfaces of Class C volcanic rocks, Class B volcanic rocks and Class A volcanic rocks from top to bottom; the seismic records of Well 2 confirmed the top surfaces of Class C volcanic rocks, Class B volcanic rocks and Class A volcanic rocks from top to bottom.

[0047] According to the seismic reflection layer interfaces corresponding to the top and bottom interfaces of the above volcanic rocks, the seismic reflection layer interfaces are as follows: Figure 3 As shown by the middle dotted line, three-dimensional seismic layer tracking and interpretation are carried out to form a top and bottom interface structure map to constrain the spatial distribution range of volcanic rocks.

[0048] The core depth correction mentioned above can also be called core depth homing, because the core depth comes from the drilling depth, and usually the core data is different from the logging curve depth, so the core depth correction is required. The core depth correction can be performed using any core depth correction method in the prior art, such as the natural gamma model method, the depth shift and block shift methods in the wellbore research platform (Techlog) software, etc.

[0049] In the above step S12, the seismic reflection unit is described in detail according to the seismic reflection characteristics. Figure 3 The seismic reflection layer interface shown by the middle dotted line provides a detailed description of the seismic reflection unit of each volcanic rock body. The detailed description of the seismic reflection unit may include the following aspects: external geometry, internal reflection structure style, and development scale.

[0050] The development scales described in detail in the above seismic reflection units may include, for example, medium scale, large scale and ultra-large scale; the internal reflection structures may include, for example, high-angle progradational inclined type, S-type progradational inclined type and parallel-subparallel layered; the geometric forms may include, for example, cliff type, delta type and carpet type.

[0051] The mesoscale, largescale and ultra-largescale developmental scales described in detail above for the seismic reflection units are distinguished according to the definitions in the prior art of stratigraphy.

[0052] In the above step S12, the seismic reflection units are classified into types, and the seismic reflection unit type to which the seismic reflection unit belongs should be determined according to the seismic reflection characteristics in the expert knowledge base; the seismic reflection unit type may include, for example: high-angle progradational inclined reflection unit, low-angle imbricate progradational seismic unit, S-type progradational inclined reflection seismic unit, parallel-subparallel layered seismic unit, mound-shaped reflection seismic unit and bow-shaped reflection seismic unit.

[0053] For example, according to Figure 2 The three-dimensional reflection characteristics of the intermediate volcanic rock mass are divided from bottom to top into large-scale high-angle progradational inclined reflection seismic units, medium-scale S-type progradational inclined reflection seismic units and ultra-large-scale parallel-subparallel layered seismic units.

[0054] The above-mentioned division of seismic units can be, for example, divided according to an expert knowledge base. When the expert knowledge base is specifically implemented, it can be obtained according to the following method:

[0055] According to the types of underground ancient volcanoes, earthquakes and volcanic structures and modern volcanic structures that have been confirmed at home and abroad, a knowledge base system based on the characteristics of volcanic structures sorted out by experts was established. The knowledge base system clarified the correspondence between various seismic reflection units and volcanic structures, and clarified the correspondence between the types of underground ancient volcanoes, earthquakes and volcanic structures and the seismic reflection characteristics of modern volcanic structures and the paleogeographic environment of volcanic rock eruptions.

[0056] In the above step S13, the volcanic structure type is determined according to the type determined by the seismic reflection unit. For example, the determination can be made according to the expert knowledge base, and a correspondence between the seismic reflection unit and the volcanic structure type in the expert knowledge base is established through the seismic reflection unit to determine the volcanic structure type.

[0057] In the above step S13, the paleogeographic environment of volcanic eruption is determined based on the seismic reflection characteristics of the volcanic structure type. For example, the determination can be made based on the expert knowledge base. The determination based on the expert knowledge base requires the determination based on the correspondence between the underground ancient volcanic seismic volcanic structure type and the seismic reflection characteristics of the modern volcanic structure type and the paleogeographic environment of volcanic eruption in the expert knowledge base.

[0058] The above-mentioned paleogeographic environment of volcanic eruption may include, for example, an underwater environment, a transitional environment and an above-water environment.

[0059] The following is an example to illustrate the above-mentioned method for distinguishing the paleogeographic environment of volcanic eruption.

[0060] Reference Figure 4 As shown, this example includes the following steps:

[0061] Step S41: select a well M that has been drilled in the block, and classify the target layer rock type and analyze the structural attributes of the well M.

[0062] Well M encountered a volcanic rock interval, from which a geophysical logging data set was obtained. The geophysical logging data set includes lithology logging data set, sonic and density logging data set;

[0063] Well M has taken cores in the volcanic rock layer section, and obtained the lithology classification data of the volcanic rock in the coring section, which clearly shows that the volcanic rock in this well belongs to basic volcanic rock. Through regional tectonic background and rock geochemical analysis, it is determined that the tectonic background of the development of volcanic rocks is the rift stage of sedimentary basins, with fissure eruption as the main feature.

[0064] Step S42: calibrate the rock types classified according to the depth-corrected core to the corresponding positions of the logging curves generated by the logging data set.

[0065] First, the depth correction of the volcanic rock core position of the target layer of Well M is carried out, and the volcanic rock type is calibrated to the corresponding position of the logging curve generated by the logging data set.

[0066] Step S43: Create synthetic seismic records and calibrate the positions of core and logging data on the three-dimensional seismic profile.

[0067] Combine the logging data of Well M with the core, calibrate the position of the volcanic rock section on the seismic profile, determine the top and bottom interface depths of the volcanic rock at the well point in the vertical direction of the seismic profile, and obtain the seismic reflection layer interface positions corresponding to the top and bottom interfaces of the volcanic rock. Figure 2 shown.

[0068] Step S44: Conduct a three-dimensional seismic detailed interpretation of the top and bottom interfaces of the volcanic rock layers.

[0069] According to the seismic reflection layer interface corresponding to the top and bottom interfaces of the volcanic rock obtained by S44 above, refer to Figure 3 In the middle dotted line part, three-dimensional seismic layer tracking and interpretation are carried out to form a top and bottom interface structural map.

[0070] Step S45: Identify seismic reflection units describing the volcanic rock body.

[0071] According to the three-dimensional seismic reflection characteristics, based on the natural interface of seismic reflection, refer to Figure 3 The middle dashed line shows the seismic reflection units of three types of volcanic bodies. Then, the seismic reflection unit of each volcanic body is described in detail, including external geometry, internal reflection structure style, development scale and other aspects.

[0072] Step S46: classify the seismic reflection unit types of the volcanic rock body.

[0073] Reference Figure 3 As shown, according to Figure 2 The depth of the top of the volcanic rock and the three-dimensional seismic reflection characteristics of the volcanic rock body shown in the figure divide the seismic profile into the following three types of volcanic rock body seismic reflection units from bottom to top:

[0074] ① Large-scale high-angle progradational inclined reflection seismic units;

[0075] ②Medium-scale S-shaped progradational inclined reflection seismic unit;

[0076] ③Ultra-large-scale parallel-subparallel layered seismic units.

[0077] Step S47: Establish the relationship between the seismic reflection unit and the expert geological knowledge base to identify the paleogeographic environment of volcanic eruption.

[0078] According to the seismic reflection type characteristics of volcanic rock bodies, the corresponding relationship between seismic reflection unit types and volcanic structure types in the expert geological knowledge base system is established, and the types of fissure volcanic structures corresponding to the three types of seismic units in S46 are clarified. Three types of volcanic rock bodies are identified from bottom to top, including: cliff-type volcanic rock bodies, delta-type volcanic rock bodies and carpet-type volcanic rock bodies. Based on these three types of seismic reflection units and their combined relationships, the corresponding paleogeographic environments of volcanic rock eruptions are comprehensively judged to be underwater environment, transitional environment and above-water environment. The comprehensive judgment of the paleogeographic environment of volcanic rock eruptions is shown in the following table:

[0079]

[0080] Based on the same inventive concept, the embodiment of the present invention also provides a volcanic eruption paleogeographic environment identification device, referring to Figure 5 As shown, including:

[0081] A detailed interpretation module 51 is used to carry out detailed interpretation by comprehensively utilizing core, drilling and seismic data;

[0082] An information processing module 52 is used to describe the seismic reflection unit in detail according to the seismic reflection characteristics and classify the seismic reflection units into types;

[0083] The environment determination module 53 is used to determine the type of volcanic structure according to the seismic reflection unit, and to determine the formation environment of the volcanic rock according to the type of volcanic structure.

[0084] A computing device provided by an embodiment of the present invention is characterized in that it includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the program executed by the processor implements the aforementioned method for distinguishing the paleogeographic environment of volcanic eruption.

[0085] An embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the aforementioned method for distinguishing the paleogeographic environment of volcanic eruption is implemented.

[0086] Since the principles of the problems solved by these devices are similar to the aforementioned methods for distinguishing the paleogeographic environment of volcanic eruptions, the implementation of the devices can refer to the implementation of the aforementioned methods, and the repeated parts will not be repeated.

[0087] The method and device for distinguishing the paleogeographic environment of volcanic eruption provided by the embodiment of the present invention comprehensively utilizes core, drilling and seismic data to carry out detailed interpretation and constrain the distribution range of volcanic rocks; describes the seismic reflection unit in detail according to the seismic reflection characteristics, and classifies the seismic reflection unit into types; distinguishes the type of volcanic structure according to the type of seismic reflection unit, and distinguishes the formation environment of volcanic rocks according to the type of volcanic structure. A new method for quickly distinguishing the paleogeographic environment of volcanic eruption based on the three factors of "development scale-internal structure-geometric shape" of volcanic structure is proposed, which reduces the difficulty of identifying and distinguishing the formation environment under underground conditions, and has important practical significance in the exploration and evaluation stage of oil and gas fields.

[0088] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) containing computer-usable program code.

[0089] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0090] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0091] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0092] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for identifying the paleogeographic environment of volcanic eruption, characterized in that: include: Comprehensive use of core, drilling and seismic data to carry out detailed interpretation and constrain the distribution range of volcanic rocks; Describe the seismic reflection units in detail according to their seismic reflection characteristics, and classify them into types; The type of volcanic structure is determined based on the type of seismic reflection unit classification, and the paleogeographic environment of volcanic rock eruption is determined based on the seismic reflection characteristics of the volcanic structure type.

2. The method according to claim 1, characterized in that The comprehensive use of core, drilling and seismic data to carry out detailed interpretation includes: Through the geological data of cores and drillings and the data provided by seismic exploration, the volcanic rock cores are depth-corrected and calibrated to the curve generated by the logging data set. The development position of the volcanic rock on the seismic profile is determined based on the synthetic seismic records of the aforementioned geological data of cores and drillings and the data provided by seismic exploration, the top and bottom interface depths of the volcanic rock at the well point in the vertical direction of the seismic profile are determined, and the seismic reflection layer interface positions corresponding to the top and bottom interfaces of the volcanic rock are obtained; According to the seismic reflection layer interfaces corresponding to the top and bottom interfaces of the above-mentioned volcanic rocks, three-dimensional seismic layer tracking and interpretation are carried out to form a top and bottom interface structure map to constrain the spatial distribution range of the volcanic rocks.

3. The method according to claim 1, characterized in that The detailed description of the seismic reflection unit according to the seismic reflection characteristics includes: The seismic reflection unit is described in detail, including the following aspects: development scale, internal reflection structure and external geometric characteristics.

4. The method according to claim 1, characterized in that The classification of seismic reflection units includes: According to the seismic reflection characteristics in the expert knowledge base, the seismic reflection unit type to which the seismic reflection unit belongs is determined; the seismic reflection unit types include: high-angle progradational inclined reflection unit, low-angle imbricate progradational seismic unit, S-type progradational inclined reflection seismic unit, parallel-subparallel layered seismic unit, mound-shaped reflection seismic unit and bow-shaped reflection seismic unit.

5. The method according to claim 4, characterized in that The expert knowledge base is obtained in the following way: According to the types of underground ancient volcanoes, earthquakes and volcanic structures confirmed at home and abroad, and modern volcanic structures, a knowledge base system based on the characteristics of volcanic structures sorted out by experts was established; the knowledge base system clarified the correspondence between the types of underground ancient volcanoes, earthquakes and volcanic structures, the seismic reflection characteristics of modern volcanic structures and the paleogeographic environment of volcanic eruptions; The above-mentioned paleogeographic environments of volcanic rock eruption include: above-water formation environment, underwater formation environment and transitional environment.

6. The method according to claim 1, characterized in that According to the type of seismic reflection unit, the type of volcanic structure is determined, and the paleogeographic environment of volcanic eruption is determined according to the seismic reflection characteristics of the volcanic structure type, including: Establish the correspondence between the seismic reflection unit and the volcanic structure type in the expert knowledge base through the seismic reflection unit to identify the volcanic structure type; Then, through the volcanic structure type, the paleogeographic environment of volcanic rock eruption is judged according to the correspondence between the underground ancient volcanic earthquake volcanic structure type and the modern volcanic structure type in the expert knowledge base and the paleogeographic environment of volcanic rock eruption.

7. The method according to claim 6, characterized in that The correspondence between the seismic reflection unit and the volcanic structure type in the expert knowledge base includes: The correspondence between the development scale, internal structure and geometric characteristics of the seismic reflection unit and the type of volcanic structure.

8. A device for distinguishing paleogeographic environment of volcanic eruption, characterized in that: include: The detailed interpretation module is used to carry out detailed interpretation using core, drilling and seismic data; An information processing module is used to describe the seismic reflection unit in detail according to the seismic reflection characteristics and classify the seismic reflection units into types; The environment identification module is used to identify the type of volcanic structure according to the seismic reflection unit, and to identify the formation environment of volcanic rocks according to the type of volcanic structure.

9. A computing device, characterized in that include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the program executed by the processor implements the method for distinguishing the paleogeographic environment of volcanic eruption as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for distinguishing the paleogeographic environment of volcanic eruption according to any one of claims 1 to 7 is implemented.

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