Stratigraphic unconformity trap identification method and device, storage medium and electronic equipment

Abstract

The application provides a formation unconformity trap identification method and device, a storage medium and electronic equipment, and relates to the technical field of oil and gas exploration.The method comprises the following steps: identifying an unconformity surface of a block to be explored based on pre-processed seismic data; performing seismic forward modeling on the identified unconformity surface to obtain formation overstripping boundary identification parameters; finely delineating a formation overstripping boundary based on the formation overstripping boundary identification parameters; predicting reservoir characteristics and effective reservoirs to obtain a reservoir body map; delineating a trap boundary based on the reservoir body map and the formation overstripping boundary and obtaining trap basic parameters to identify a formation unconformity trap.The technical scheme provided by the application can standardize and unify the identification of formation unconformity traps, and can accurately and effectively identify the formation unconformity traps, thereby improving the evaluation and management level of the formation unconformity traps.

Description

Technical Field

[0001] This invention relates to the field of oil and gas exploration technology, and in particular to a method, apparatus, storage medium, and electronic device for identifying formation unconformities. Background Technology

[0002] Traps are the final sites of hydrocarbon accumulation, the most concrete and practical exploration targets at all levels of exploration evaluation, and the main exploration objectives in the pre-exploration phase as well as an important evaluation component in the exploration phase. Trap evaluation reflects not only the exploration progress and potential of an exploration area but also the explorers' understanding of the target hydrocarbon reservoir geological conditions, directly impacting the risk level of exploration deployment. Trap evaluation is crucial for guiding annual planning and deployment, and is a key step in improving exploration success rates.

[0003] In recent years, oil and gas exploration has become increasingly difficult due to the complexity of underground geological conditions and the growing concealment of exploration targets. With the shift in exploration strategies, relying on advanced and applicable new exploration technologies and methods, the types of exploration targets have also shifted from structural traps to stratigraphic, lithological, and complex traps. As oil and gas exploration technologies continue to improve, the role of stratigraphic unconformities in future reserve growth will become increasingly significant.

[0004] According to research and investigation, no internationally established methods have been developed for identifying, describing, and evaluating stratigraphic unconformities. Domestically, relevant content is limited to technical and management standards adopted by the oil and gas industry. However, these standards lack detailed and in-depth descriptions and evaluations of stratigraphic unconformities, resulting in an unsystematic and imprecise approach. For example, there is a lack of quantitative evaluation standards for identifying and describing the boundaries of stratigraphic unconformities, leading to insufficient detail and reliability in trap characterization. Furthermore, there are inconsistencies in the identification, description, and evaluation techniques for stratigraphic unconformities across different basins, and the results are not standardized, making trap identification difficult and resulting in low implementation rates, directly hindering the effective implementation of exploration deployments. Summary of the Invention

[0005] To address the problems in the prior art, this application proposes a method, apparatus, storage medium, and electronic device for identifying unconformity traps in stratigraphy, which can identify unconformity traps in a standardized, accurate, and effective manner, thereby improving the evaluation and management level of unconformity traps in stratigraphy.

[0006] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0007] In a first aspect, embodiments of the present invention provide a method for identifying formation unconformities and traps, the method comprising:

[0008] Identification of unconformities in the block to be explored based on pre-processed seismic data;

[0009] Seismic forward modeling was performed on the identified unconformities to obtain stratigraphic over-stripping boundary identification parameters;

[0010] The stratigraphic over-stripping boundary is finely characterized based on the stratigraphic over-stripping boundary identification parameters.

[0011] Reservoir characteristics and effective reservoirs are predicted to obtain reservoir maps;

[0012] Based on the reservoir map and the stratigraphic over-exfoliation boundary, trap boundaries are delineated and basic trap parameters are obtained to identify stratigraphic unconformity traps.

[0013] Furthermore, before identifying unconformities in the block to be explored based on pre-processed seismic data, the method further includes:

[0014] Determine the geological conditions for the development of unconformity traps in the proposed exploration block.

[0015] Preferably, the pre-processed seismic data includes: stratigraphic contact relationships, paleontological information, volcanic activity information, and well logging curves; the identification of unconformities in the block to be explored based on the pre-processed seismic data includes:

[0016] Based on the stratigraphic contact relationship, the paleontological information, and the volcanic activity information, isotope dating technology is used to identify the unconformity of the block to be explored.

[0017] Based on the well logging curves, unconformity surfaces are identified in the block to be explored.

[0018] Based on the geological identification and well logging identification of the unconformity, high-order time-frequency analysis technology is used to constrain inter-well tracking in order to achieve seismic identification of the unconformity.

[0019] Preferably, the identified unconformities include unconformities of different order levels and different types; the step of performing seismic forward modeling on the identified unconformities to obtain stratigraphic over-stripping boundary identification parameters includes:

[0020] Seismic forward modeling was performed on various combinations of unconformities of different order levels and types, with different lithologies, velocities, and stratigraphic dip angles above and below the surface, to obtain seismic response characteristics;

[0021] The stratigraphic over-stripping boundary identification parameters are obtained based on the seismic response characteristics.

[0022] Preferably, the step of finely characterizing the stratigraphic over-stripping boundary based on the stratigraphic over-stripping boundary identification parameters includes:

[0023] Based on the stratigraphic over-stripping boundary identification parameters, the stratigraphic over-stripping boundary is finely characterized using seismic attribute instantaneous phase technology, angle seismic extrapolation technology, ant body processing technology, horizontal slicing technology, and geostatistical methods.

[0024] Preferably, the step of predicting reservoir characteristics and effective reservoirs to obtain a reservoir map includes:

[0025] The reservoir characteristics are obtained through core and well logging analysis; wherein, the reservoir characteristics include: lithological characteristics, lithofacies characteristics, and physical property characteristics;

[0026] The effective reservoirs are predicted using seismic inversion and convergent stratigraphic seismic attribute techniques.

[0027] Based on the reservoir characteristics and the effective reservoir, the reservoir map is obtained.

[0028] Furthermore, before delineating the trap boundary based on the reservoir map and the stratigraphic over-exfoliation boundary and obtaining the basic trap parameters to identify the stratigraphic unconformity trap, the method further includes:

[0029] Analyze the sealing conditions of the top and bottom slabs; and,

[0030] Obtain the matching relationship between structural lines, stratigraphic stripping lines, and lithological pinch-out lines;

[0031] The process of delineating trap boundaries and obtaining basic trap parameters based on the reservoir map and the stratigraphic over-exfoliation boundary to identify stratigraphic unconformity traps includes:

[0032] Based on the top and bottom plate sealing conditions and the matching relationship, the reservoir map is superimposed with the stratigraphic over-stripping boundary to delineate the trap boundary;

[0033] The basic parameters of the trap are obtained based on the trap boundary to identify the unconformity trap in the formation.

[0034] Furthermore, the method also includes:

[0035] The capping capacity of the unconformity traps in the aforementioned formations is evaluated.

[0036] Preferably, the evaluation of the capping capacity of the unconformity trap includes:

[0037] Based on actual drilling data, geophysical prediction techniques were used to clarify the lithological distribution of the trap's roof and floor.

[0038] Based on the quantitative relationship between caprock breakthrough pressure and sonic logging, geophysical methods are used to evaluate caprock quality.

[0039] Secondly, embodiments of the present invention provide a formation unconformity trap identification device, the device comprising:

[0040] Unconformity identification unit is used to identify unconformities in the block to be explored based on pre-processed seismic data;

[0041] Seismic forward modeling unit is used to perform seismic forward modeling on the identified unconformity surface to obtain stratigraphic over-stripping boundary identification parameters;

[0042] The stratigraphic over-exfoliation boundary characterization unit is used to finely characterize the stratigraphic over-exfoliation boundary based on the stratigraphic over-exfoliation boundary identification parameters;

[0043] The prediction unit is used to predict reservoir characteristics and effective reservoirs to obtain a reservoir map;

[0044] The trap boundary characterization unit is used to characterize the trap boundary and obtain the basic trap parameters based on the reservoir map and the stratigraphic over-exfoliation boundary, so as to identify stratigraphic unconformity traps.

[0045] Thirdly, embodiments of the present invention provide a storage medium storing program code, which, when executed by a processor, implements the formation unconformity trap identification method as described in any of the above embodiments.

[0046] Fourthly, embodiments of the present invention provide an electronic device, the electronic device including a memory and a processor, the memory storing program code executable on the processor, the program code being executed by the processor to implement the stratigraphic unconformity trap identification method as described in any of the above embodiments.

[0047] The stratigraphic unconformity trap identification method, apparatus, storage medium, and electronic equipment provided in this invention identify unconformities in the exploration block based on pre-processed seismic data, perform seismic forward modeling on the identified unconformities to obtain stratigraphic over-stripping boundary identification parameters, finely characterize the stratigraphic over-stripping boundary based on the stratigraphic over-stripping boundary identification parameters, predict reservoir characteristics and effective reservoirs, obtain a reservoir map, and characterize the trap boundary based on the reservoir map and the stratigraphic over-stripping boundary to obtain basic trap parameters, thereby identifying stratigraphic unconformity traps. This enables the identification of stratigraphic unconformity traps to be standardized, uniform, accurate, and effective. In other words, the technical solution provided in this invention can identify stratigraphic unconformity traps in a standardized, uniform, accurate, and effective manner, thereby improving the evaluation and management level of stratigraphic unconformity traps. Attached Figure Description

[0048] The scope of this invention can be better understood by reading the following detailed description of exemplary embodiments in conjunction with the accompanying drawings. The accompanying drawings are:

[0049] Figure 1 The method flow of this invention embodiment Figure 1 ;

[0050] Figure 2 The method flow of this invention embodiment Figure 2 ;

[0051] Figure 3 This is a schematic diagram illustrating the stratigraphic over-stripping boundary description of a high-order unconformity surface in an embodiment of the present invention;

[0052] Figure 4 This is a schematic diagram illustrating the stratigraphic over-stripping boundary description of a low-order unconformity surface in an embodiment of the present invention;

[0053] Figure 5 This is a structural diagram of the device according to an embodiment of the present invention. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of the present invention clearer, the implementation method of the present invention will be described in detail below with reference to the accompanying drawings and embodiments, so that the process of how the present invention uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0055] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0056] Example 1

[0057] In recent years, with the deepening and improvement of oil and gas exploration in major basins in China, special types of traps such as stratigraphic unconformities have been continuously discovered and breakthroughs have been achieved, making them an important area for increasing reserves and production and resource succession. To further meet the needs of modernization and efficiency in the evaluation of stratigraphic unconformity traps, this paper deepens the identification, description, and evaluation of stratigraphic unconformity traps based on their geological background, research results, and management experience, and establishes technical methods for their identification, description, and evaluation.

[0058] Statistical analysis of the main factors contributing to exploration well failures over the years shows that inaccurate trap identification is the primary cause, accounting for 34% of failures. To improve the quality and efficiency of exploration deployment for unconformity traps and to promote the standardization and normalization of trap evaluation, it is urgent to develop a series of technologies for identifying, describing, and evaluating unconformity traps.

[0059] To further promote the scientific, orderly, and efficient exploration of unconformity oil and gas reservoirs, this study, based on a summary of the exploration results and enrichment patterns of discovered unconformity traps, and considering the unique geological background of unconformity trap formation, standardizes the key points for identifying and describing unconformity traps, establishes technical methods for identifying, describing, and evaluating unconformity traps, effectively improves the accuracy of unconformity trap identification and description, further enhances the evaluation and management level of unconformity traps, and increases the drilling rate and success rate of unconformity traps.

[0060] Based on the above ideas, embodiments of the present invention provide a method for identifying formation unconformity traps, such as... Figure 1 As shown, the method described in this embodiment includes steps S101, S102, S103, S104, and S105. The specific details of these steps are described below:

[0061] Step S101: Identify unconformities in the block to be explored based on pre-processed seismic data;

[0062] In this embodiment, the pre-processed seismic data includes: stratigraphic contact relationships, paleontological information, volcanic activity information, and well logging curves; the identification of unconformities in the block to be explored based on the pre-processed seismic data includes:

[0063] Based on the stratigraphic contact relationships, paleontological information, and volcanic activity information, isotope dating technology is used to geologically identify unconformities in the block to be explored; well logging curves are used to identify unconformities in the block to be explored; based on the geological identification and well logging identification of unconformities, high-order time-frequency analysis technology is used to constrain inter-well tracking to achieve seismic identification of unconformities.

[0064] In this embodiment, the pre-processed seismic data is obtained in the following way: the original seismic data of the exploration block is analyzed for quality, and seismic data with poor quality is processed in a targeted manner to improve the seismic identifiability of stratigraphic erosion lines and stratigraphic overlap lines, so that the obtained seismic data can meet the identification requirements of stratigraphic erosion lines and stratigraphic overlap lines. Only by processing the original seismic data can the seismic accuracy be improved and stratigraphic erosion lines and stratigraphic overlap lines be better identified.

[0065] The quality of seismic data is judged by its resolution and imaging accuracy. For poor-quality seismic data, such as weak reflection areas under strong reflection in first-order unconformities, automatic seismic gain processing is used; for second- and third-order low-angle unconformities, frequency extension processing is used, and ant-body technology is employed to identify erosion pinch-out lines and low-sequence faults in tectonic fracture zones.

[0066] In this embodiment, before the unconformity identification of the block to be explored based on the pre-processed seismic data, the method further includes:

[0067] Determine the geological conditions for the development of unconformity traps in the proposed exploration block.

[0068] Specifically, studies will be conducted on the tectonic evolution history, stratigraphic framework, stratigraphic distribution, and stratigraphic lithological assemblage of the exploration block to clarify the development location and macroscopic distribution characteristics of unconformity traps, so as to determine the geological conditions for the development of unconformity traps in the exploration block.

[0069] Step S102: Perform seismic forward modeling on the identified unconformities to obtain stratigraphic over-stripping boundary identification parameters;

[0070] In this embodiment, the identified unconformities include unconformities of different order levels and different types; the step of performing seismic forward modeling on the identified unconformities to obtain stratigraphic over-peeling boundary identification parameters includes:

[0071] Seismic forward modeling was performed on various combinations of unconformities of different order levels and types, with different lithologies, velocities, and stratigraphic dip angles above and below the unconformities to obtain seismic response characteristics; based on the seismic response characteristics, the stratigraphic over-stripping boundary identification parameters were obtained.

[0072] The stratigraphic over-peeling boundary identification parameters include: stratigraphic erosion line identification parameters and stratigraphic over-covering line identification parameters.

[0073] In this embodiment, the Class I high-angle unconformity exhibits continuous strong reflection and obvious truncation characteristics with the underlying eroded strata. The smaller the extrapolation distance between the identified erosion point and the actual location, the more easily it can be identified by conventional profiles. Class II and III low-angle unconformities have poor continuity of phase axis, weak reflection, and indistinct truncation characteristics, making it difficult to identify the erosion point and its accurate location.

[0074] Among them, the stratigraphic angle, layer velocity, and dominant seismic wave frequency are the main factors affecting the identification of seismic overstripping points; mean instantaneous phase is an advantageous attribute for identifying stratigraphic traps.

[0075] Step S103: Based on the stratigraphic over-stripping boundary identification parameters, the stratigraphic over-stripping boundary is finely characterized;

[0076] In this embodiment, the step of finely characterizing the stratigraphic over-stripping boundary based on the stratigraphic over-stripping boundary identification parameters includes: finely characterizing the stratigraphic over-stripping boundary based on the stratigraphic over-stripping boundary identification parameters using seismic attribute instantaneous phase technology, angle seismic extrapolation technology, ant body processing technology, horizontal slicing technology and geostatistical methods.

[0077] in, Figure 3This is a schematic diagram illustrating the stratigraphic over-stripping boundary description of a high-order unconformity surface in an embodiment of the present invention. Figure 4 This is a schematic diagram illustrating the description of stratigraphic over-stripping boundaries for low-order unconformities in an embodiment of the present invention. As can be seen from the diagram, the description of stratigraphic over-stripping boundaries can be roughly divided into three specific steps: defining the over-stripping pattern, identifying over-stripping points, and delineating over-stripping lines.

[0078] Step S104: Predict reservoir characteristics and effective reservoirs to obtain a reservoir map;

[0079] In this embodiment, the step of predicting reservoir characteristics and effective reservoirs to obtain a reservoir map includes: obtaining the reservoir characteristics through core and well logging analysis; wherein, the reservoir characteristics include: lithological characteristics, lithofacies characteristics, and physical property characteristics; predicting the effective reservoirs using seismic inversion and convergent stratigraphic seismic attribute technology; and obtaining the reservoir map based on the reservoir characteristics and the effective reservoirs.

[0080] Step S105: Based on the reservoir map and the stratigraphic over-exfoliation boundary, the trap boundary is delineated and the basic parameters of the trap are obtained to identify the stratigraphic unconformity trap.

[0081] In this embodiment, before delineating the trap boundary based on the reservoir map and the stratigraphic stripping boundary and obtaining the basic trap parameters to identify the stratigraphic unconformity trap, the method further includes: analyzing the sealing conditions of the top and bottom plates; and obtaining the matching relationship between structural lines, stratigraphic stripping lines and lithological pinch-out lines.

[0082] The step of delineating the trap boundary and obtaining basic trap parameters based on the reservoir map and the stratigraphic over-stripping boundary to identify stratigraphic unconformity traps includes: overlaying the reservoir map and the stratigraphic over-stripping boundary based on the top and bottom plate sealing conditions and the matching relationship to delineate the trap boundary; and obtaining the basic trap parameters based on the trap boundary to identify the stratigraphic unconformity trap.

[0083] In this embodiment, the basic parameters of the trap include the area, thickness, and burial depth of the highest point of the trap.

[0084] Furthermore, the method described in this embodiment also includes: evaluating the capping capacity of the unconformity trap.

[0085] In this embodiment, the evaluation of the capping capacity of the unconformity trap includes: based on actual drilling data, using geophysical prediction technology to clarify the lithological distribution of the top and bottom plates of the trap; and based on the quantitative relationship between capping pressure and sonic logging, using geophysical exploration methods to evaluate the quality of the capping layer.

[0086] The stratigraphic unconformity trap identification method provided in this invention identifies unconformities in the exploration block based on pre-processed seismic data, performs seismic forward modeling on the identified unconformities to obtain stratigraphic over-stripping boundary identification parameters, finely delineates the stratigraphic over-stripping boundary based on these parameters, predicts reservoir characteristics and effective reservoirs, obtains a reservoir map, and delineates trap boundaries and obtains trap basic parameters based on the reservoir map and the stratigraphic over-stripping boundary to identify stratigraphic unconformity traps. This method enables standardized, accurate, and effective identification of stratigraphic unconformity traps. In other words, the technical solution provided in this invention can standardize, accurately, and effectively identify stratigraphic unconformity traps, thereby improving the evaluation and management level of stratigraphic unconformity traps.

[0087] Example 2

[0088] This embodiment uses an actual process of identifying stratigraphic unconformity traps as an example to further explain the method for identifying stratigraphic unconformity traps in detail. Figure 2 As shown, the method described in this embodiment includes steps S201, S202, S203, S204, S205, S206, S207, and S208. The specific contents of these steps are described in detail below:

[0089] Step S201: Determine the geological conditions for the development of unconformity traps in the block to be explored;

[0090] Specifically, studies will be conducted on the tectonic evolution history, stratigraphic framework, stratigraphic distribution, and stratigraphic lithological assemblage of the exploration block to clarify the development location and macroscopic distribution characteristics of unconformity traps, so as to determine the geological conditions for the development of unconformity traps in the exploration block.

[0091] Step S202: Process the raw seismic data of the block to be explored;

[0092] In this embodiment, the processing of the raw seismic data of the exploration block includes: performing quality analysis on the raw seismic data of the exploration block; and performing targeted processing on seismic data with poor quality to improve the seismic identifiability of stratigraphic erosion lines and stratigraphic overlap lines, so that the seismic data can meet the identification requirements of stratigraphic erosion lines and stratigraphic overlap lines. Only by processing the raw seismic data can the seismic accuracy be improved and stratigraphic erosion lines and stratigraphic overlap lines be better identified.

[0093] The quality of seismic data is judged by its resolution and imaging accuracy. For poor-quality seismic data, such as weak reflection areas under strong reflection in first-order unconformities, automatic seismic gain processing is used; for second- and third-order low-angle unconformities, frequency extension processing is used, and ant-body technology is employed to identify erosion pinch-out lines and low-sequence faults in tectonic fracture zones.

[0094] Step S203: Identify unconformities in the block to be explored based on the processed seismic data;

[0095] In this embodiment, the processed seismic data includes: stratigraphic contact relationships, paleontological information, volcanic activity information, and well logging curves. Based on the processed seismic data, unconformity identification is performed on the block to be explored, including:

[0096] Based on the stratigraphic contact relationships, paleontological information, and volcanic activity information, isotope dating technology is used to geologically identify unconformities in the block to be explored; well logging curves are used to identify unconformities in the block to be explored; based on the geological identification and well logging identification of unconformities, high-order time-frequency analysis technology is used to constrain inter-well tracking to achieve seismic identification of unconformities.

[0097] Step S204: Perform seismic forward modeling on the identified unconformities to obtain stratigraphic over-stripping boundary identification parameters;

[0098] In this embodiment, the identified unconformities include unconformities of different order levels and different types; the step of performing seismic forward modeling on the identified unconformities to obtain stratigraphic over-peeling boundary identification parameters includes:

[0099] Seismic forward modeling was performed on various combinations of unconformities of different order levels and types, with different lithologies, velocities, and stratigraphic dip angles above and below the unconformities to obtain seismic response characteristics; based on the seismic response characteristics, the stratigraphic over-stripping boundary identification parameters were obtained.

[0100] The stratigraphic over-peeling boundary identification parameters include: stratigraphic erosion line identification parameters and stratigraphic over-covering line identification parameters.

[0101] In this embodiment, the Class I high-angle unconformity exhibits continuous strong reflection and obvious truncation characteristics with the underlying eroded strata. The smaller the extrapolation distance between the identified erosion point and the actual location, the more easily it can be identified by conventional profiles. Class II and III low-angle unconformities have poor continuity of phase axis, weak reflection, and indistinct truncation characteristics, making it difficult to identify the erosion point and its accurate location.

[0102] Among them, the stratigraphic angle, layer velocity, and dominant seismic wave frequency are the main factors affecting the identification of seismic overstripping points; mean instantaneous phase is an advantageous attribute for identifying stratigraphic traps.

[0103] Step S205: Based on the stratigraphic over-stripping boundary identification parameters, the stratigraphic over-stripping boundary is finely characterized;

[0104] In this embodiment, the step of finely characterizing the stratigraphic over-stripping boundary based on the stratigraphic over-stripping boundary identification parameters includes: finely characterizing the stratigraphic over-stripping boundary based on the stratigraphic over-stripping boundary identification parameters using seismic attribute instantaneous phase technology, angle seismic extrapolation technology, ant body processing technology, horizontal slicing technology and geostatistical methods.

[0105] in, Figure 3 This is a schematic diagram illustrating the stratigraphic over-stripping boundary description of a high-order unconformity surface in an embodiment of the present invention. Figure 4 This is a schematic diagram illustrating the description of stratigraphic over-stripping boundaries for low-order unconformities in an embodiment of the present invention. As can be seen from the diagram, the description of stratigraphic over-stripping boundaries can be roughly divided into three specific steps: defining the over-stripping pattern, identifying over-stripping points, and delineating over-stripping lines.

[0106] Step S206: Evaluate the capping capacity of the formation unconformity trap;

[0107] In this embodiment, the capping capacity of the unconformity trap is evaluated, including: based on actual drilling data, geophysical prediction technology is used to clarify the lithological distribution of the top and bottom plates of the trap; based on the quantitative relationship between caprock breakthrough pressure and sonic logging, geophysical exploration methods are used to evaluate the quality of the caprock.

[0108] Step S207: Predict reservoir characteristics and effective reservoirs to obtain a reservoir map;

[0109] In this embodiment, the step of predicting reservoir characteristics and effective reservoirs to obtain a reservoir map includes: obtaining the reservoir characteristics through core and well logging analysis; wherein, the reservoir characteristics include: lithological characteristics, lithofacies characteristics, and physical property characteristics; predicting the effective reservoirs using seismic inversion and convergent stratigraphic seismic attribute technology; and obtaining the reservoir map based on the reservoir characteristics and the effective reservoirs.

[0110] Step S208: Based on the reservoir map and the stratigraphic over-exfoliation boundary, the trap boundary is delineated and the basic trap parameters are obtained to identify stratigraphic unconformity traps.

[0111] In this embodiment, it is first necessary to analyze the sealing conditions of the top and bottom plates and obtain the matching relationship between the three lines: structural line, stratigraphic stripping line and lithological pinch-out line. Then, based on the sealing conditions of the top and bottom plates and the matching relationship, the reservoir map is superimposed with the stratigraphic stripping boundary to delineate the trap boundary. Based on the trap boundary, the basic parameters of the trap are obtained to identify the stratigraphic unconformity trap.

[0112] After identifying unconformity traps using the methods described above, further hydrocarbon evaluation can be conducted on these unconformity traps in practical applications.

[0113] In this embodiment, the evaluation of hydrocarbon-bearing unconformity traps should focus on strengthening the assessment of hydrocarbon sources and conduit conditions. Specifically, the evaluation of hydrocarbon sources and conduit conditions should emphasize the spatial relationship between the trap and source rocks, the matching relationship between the main hydrocarbon expulsion period of the source rock and the trap formation time, the complex conduit system (such as faults, unconformities, and sand bodies), the dominant migration pathways, and the effective migration distance. For stratigraphic overlap unconformities, the study should also strengthen the research on preservation conditions such as the development and distribution of caprocks in the trap development area.

[0114] Based on a systematic summary of the types of hydrocarbon accumulation combinations, hydrocarbon enrichment patterns, and key controlling factors of stratigraphic unconformity traps, this embodiment proposes, through in-depth research, that the key to identifying stratigraphic unconformity traps lies in the identification of unconformity surfaces and the detailed characterization of stratigraphic overstripping lines. The key technologies in this embodiment are: using well logging composite curves and high-order time-frequency analysis techniques for unconformity surfaces; and using seismic structural attributes and ant colony tracking techniques for stratigraphic overstripping lines, forming an "eight-step process" for identifying and describing stratigraphic unconformity traps.

[0115] The above eight-step process can be summarized as follows: First, conduct research on tectonic evolution history, stratigraphic framework, stratigraphic distribution, and stratigraphic lithological assemblage patterns to clarify the location and macroscopic distribution characteristics of unconformities; Second, perform quality analysis on seismic data, and specifically process low-quality seismic data to improve the seismic identifiability of stratigraphic erosion lines and overburden lines; Third, identify unconformities; Fourth, conduct forward modeling of different sequence levels and types of unconformities, combining different lithologies, velocities, and stratigraphic dip angles above and below them, analyze seismic response characteristics, and clarify sensitive parameters for identifying stratigraphic erosion and overburden lines; Fifth, utilize seismic data... The process involves several steps: First, the stratigraphic overstripping lines are characterized using techniques such as instantaneous phase analysis, angle seismic extrapolation, ant body processing, horizontal slicing, and geostatistical methods. Second, actual drilling data is combined with geophysical predictions to clarify the lithological distribution of the trap's top and bottom plates. Third, the quality of the caprock is evaluated using geophysical methods, starting with the quantitative relationship between caprock breakthrough pressure and sonic logging. Fourth, reservoir characteristics and effective reservoir prediction are determined. Fifth, the sealing conditions of the top and bottom plates are analyzed, along with the matching relationship between structural lines, stratigraphic overstripping lines, and lithological pinch-out lines. By overlaying reservoir and structural data into a single map, the trap boundaries are meticulously depicted, and basic trap parameters are determined.

[0116] The method described in this embodiment is practically applied to the identification, description, and evaluation of unconformity traps in the Jiyang Depression. Drilling confirmed that the unconformity traps were consistent with the pre-drilling assessment, demonstrating reliable trap identification and further validating the effectiveness of the "eight-step process" for identifying and describing unconformity traps. This method not only promotes the standardization and normalization of unconformity trap identification and description work in the Bohai Bay Basin, improving the drilling rate and success rate of unconformity traps, but also has significant guiding significance for oil and gas exploration in other basins in China.

[0117] The stratigraphic unconformity trap identification method provided in this invention identifies unconformities in the exploration block based on pre-processed seismic data, performs seismic forward modeling on the identified unconformities to obtain stratigraphic over-stripping boundary identification parameters, finely delineates the stratigraphic over-stripping boundary based on these parameters, predicts reservoir characteristics and effective reservoirs, obtains a reservoir map, and delineates trap boundaries and obtains trap basic parameters based on the reservoir map and the stratigraphic over-stripping boundary to identify stratigraphic unconformity traps. This method enables standardized, accurate, and effective identification of stratigraphic unconformity traps. In other words, the technical solution provided in this invention can standardize, accurately, and effectively identify stratigraphic unconformity traps, thereby improving the evaluation and management level of stratigraphic unconformity traps.

[0118] Example 3

[0119] Corresponding to the above-described method embodiments, the present invention also provides a formation unconformity trap identification device, such as... Figure 5 As shown, the device includes:

[0120] Unconformity identification unit 301 is used to identify unconformities in the block to be explored based on pre-processed seismic data.

[0121] Seismic forward modeling unit 302 is used to perform seismic forward modeling on the identified unconformity surface to obtain stratigraphic over-stripping boundary identification parameters;

[0122] The stratigraphic over-exfoliation boundary characterization unit 303 is used to finely characterize the stratigraphic over-exfoliation boundary based on the stratigraphic over-exfoliation boundary identification parameters;

[0123] Prediction unit 304 is used to predict reservoir characteristics and effective reservoirs to obtain a reservoir map;

[0124] The trap boundary characterization unit 305 is used to characterize the trap boundary and obtain the basic trap parameters based on the reservoir map and the stratigraphic over-exfoliation boundary, so as to identify the stratigraphic unconformity trap.

[0125] Furthermore, the apparatus described in this embodiment also includes:

[0126] The determination unit is used to determine the geological conditions for the development of unconformity traps in the stratigraphic blocks to be explored.

[0127] In this embodiment, the pre-processed seismic data includes: stratigraphic contact relationships, paleontological information, volcanic activity information, and well logging curves; the unconformity identification unit 301 identifies the unconformity of the block to be explored in the following manner:

[0128] Based on the stratigraphic contact relationship, the paleontological information, and the volcanic activity information, isotope dating technology is used to identify the unconformity of the block to be explored.

[0129] Based on the well logging curves, unconformity surfaces are identified in the block to be explored.

[0130] Based on the geological identification and well logging identification of the unconformity, high-order time-frequency analysis technology is used to constrain inter-well tracking in order to achieve seismic identification of the unconformity.

[0131] In this embodiment, the identified unconformities include unconformities of different order levels and different types; the seismic forward modeling unit 302 performs seismic forward modeling on the identified unconformities in the following manner to obtain stratigraphic over-stripping boundary identification parameters:

[0132] Seismic forward modeling was performed on various combinations of unconformities of different order levels and types, with different lithologies, velocities, and stratigraphic dip angles above and below the surface, to obtain seismic response characteristics;

[0133] The stratigraphic over-stripping boundary identification parameters are obtained based on the seismic response characteristics.

[0134] In this embodiment, the stratigraphic over-exfoliation boundary characterization unit 303 finely characterizes the stratigraphic over-exfoliation boundary in the following manner:

[0135] Based on the stratigraphic over-stripping boundary identification parameters, the stratigraphic over-stripping boundary is finely characterized using seismic attribute instantaneous phase technology, angle seismic extrapolation technology, ant body processing technology, horizontal slicing technology, and geostatistical methods.

[0136] In this embodiment, the prediction unit 304 predicts reservoir characteristics and effective reservoirs in the following manner to obtain a reservoir map:

[0137] The reservoir characteristics are obtained through core and well logging analysis; wherein, the reservoir characteristics include: lithological characteristics, lithofacies characteristics, and physical property characteristics;

[0138] The effective reservoirs are predicted using seismic inversion and convergent stratigraphic seismic attribute techniques.

[0139] Based on the reservoir characteristics and the effective reservoir, the reservoir map is obtained.

[0140] Furthermore, the apparatus described in this embodiment also includes:

[0141] The analysis unit is used to analyze the top and bottom plate sealing conditions before the trap boundaries are delineated based on the reservoir map and the stratigraphic over-stripping boundary and the basic parameters of the trap are obtained in order to identify the stratigraphic unconformity trap.

[0142] The matching relationship acquisition unit is used to acquire the matching relationship between structural lines, stratigraphic stripping lines and lithological pinch-out lines before the trap boundary is delineated based on the reservoir map and the stratigraphic stripping boundary and the basic parameters of the trap are obtained in order to identify the stratigraphic unconformity trap.

[0143] Then, the trap boundary characterization unit 305 characterizes the trap boundary and obtains the basic trap parameters in the following manner to identify the unconformity trap:

[0144] Based on the top and bottom plate sealing conditions and the matching relationship, the reservoir map is superimposed with the stratigraphic over-stripping boundary to delineate the trap boundary;

[0145] The basic parameters of the trap are obtained based on the trap boundary to identify the unconformity trap in the formation.

[0146] Furthermore, the apparatus described in this embodiment also includes:

[0147] The capping capacity evaluation unit is used to evaluate the capping capacity of the unconformity trap in the formation.

[0148] In this embodiment, the capping capability evaluation unit evaluates the capping capability of the formation unconformity trap using the following method:

[0149] Based on actual drilling data, geophysical prediction techniques were used to clarify the lithological distribution of the trap's roof and floor.

[0150] Based on the quantitative relationship between caprock breakthrough pressure and sonic logging, geophysical methods are used to evaluate caprock quality.

[0151] For details regarding the working principle, workflow, and specific implementation methods of the aforementioned device, please refer to the specific implementation methods of the stratigraphic unconformity trap identification method provided by this invention. The same technical content will not be described in detail here.

[0152] The stratigraphic unconformity trap identification device provided in this embodiment of the invention identifies unconformities in the exploration block based on pre-processed seismic data, performs seismic forward modeling on the identified unconformities to obtain stratigraphic over-stripping boundary identification parameters, finely delineates the stratigraphic over-stripping boundary based on these parameters, predicts reservoir characteristics and effective reservoirs, obtains a reservoir map, and delineates trap boundaries and obtains trap basic parameters based on the reservoir map and the stratigraphic over-stripping boundary to identify stratigraphic unconformity traps. This enables the identification of stratigraphic unconformity traps to be standardized, consistent, accurate, and effective. In other words, the technical solution provided in this embodiment of the invention can identify stratigraphic unconformity traps in a standardized, consistent, accurate, and effective manner, thereby improving the evaluation and management level of stratigraphic unconformity traps.

[0153] Example 4

[0154] According to an embodiment of the present invention, a storage medium is also provided, wherein program code is stored on the storage medium, and when the program code is executed by a processor, the method for identifying unconformity traps in formation as described in any of the above embodiments is implemented.

[0155] The method includes:

[0156] Identification of unconformities in the block to be explored based on pre-processed seismic data;

[0157] Seismic forward modeling was performed on the identified unconformities to obtain stratigraphic over-stripping boundary identification parameters;

[0158] The stratigraphic over-stripping boundary is finely characterized based on the stratigraphic over-stripping boundary identification parameters.

[0159] Reservoir characteristics and effective reservoirs are predicted to obtain reservoir maps;

[0160] Based on the reservoir map and the stratigraphic over-exfoliation boundary, trap boundaries are delineated and basic trap parameters are obtained to identify stratigraphic unconformity traps.

[0161] Furthermore, before identifying unconformities in the block to be explored based on pre-processed seismic data, the method further includes:

[0162] Determine the geological conditions for the development of unconformity traps in the proposed exploration block.

[0163] Preferably, the pre-processed seismic data includes: stratigraphic contact relationships, paleontological information, volcanic activity information, and well logging curves; the identification of unconformities in the block to be explored based on the pre-processed seismic data includes:

[0164] Based on the stratigraphic contact relationship, the paleontological information, and the volcanic activity information, isotope dating technology is used to identify the unconformity of the block to be explored.

[0165] Based on the well logging curves, unconformity surfaces are identified in the block to be explored.

[0166] Based on the geological identification and well logging identification of the unconformity, high-order time-frequency analysis technology is used to constrain inter-well tracking in order to achieve seismic identification of the unconformity.

[0167] Preferably, the identified unconformities include unconformities of different order levels and different types; the step of performing seismic forward modeling on the identified unconformities to obtain stratigraphic over-stripping boundary identification parameters includes:

[0168] Seismic forward modeling was performed on various combinations of unconformities of different order levels and types, with different lithologies, velocities, and stratigraphic dip angles above and below the surface, to obtain seismic response characteristics;

[0169] The stratigraphic over-stripping boundary identification parameters are obtained based on the seismic response characteristics.

[0170] Preferably, the step of finely characterizing the stratigraphic over-stripping boundary based on the stratigraphic over-stripping boundary identification parameters includes:

[0171] Based on the stratigraphic over-stripping boundary identification parameters, the stratigraphic over-stripping boundary is finely characterized using seismic attribute instantaneous phase technology, angle seismic extrapolation technology, ant body processing technology, horizontal slicing technology, and geostatistical methods.

[0172] Preferably, the step of predicting reservoir characteristics and effective reservoirs to obtain a reservoir map includes:

[0173] The reservoir characteristics are obtained through core and well logging analysis; wherein, the reservoir characteristics include: lithological characteristics, lithofacies characteristics, and physical property characteristics;

[0174] The effective reservoirs are predicted using seismic inversion and convergent stratigraphic seismic attribute techniques.

[0175] Based on the reservoir characteristics and the effective reservoir, the reservoir map is obtained.

[0176] Furthermore, before delineating the trap boundary based on the reservoir map and the stratigraphic over-exfoliation boundary and obtaining the basic trap parameters to identify the stratigraphic unconformity trap, the method further includes:

[0177] Analyze the sealing conditions of the top and bottom slabs; and,

[0178] Obtain the matching relationship between structural lines, stratigraphic stripping lines, and lithological pinch-out lines;

[0179] The process of delineating trap boundaries and obtaining basic trap parameters based on the reservoir map and the stratigraphic over-exfoliation boundary to identify stratigraphic unconformity traps includes:

[0180] Based on the top and bottom plate sealing conditions and the matching relationship, the reservoir map is superimposed with the stratigraphic over-stripping boundary to delineate the trap boundary;

[0181] The basic parameters of the trap are obtained based on the trap boundary to identify the unconformity trap in the formation.

[0182] Furthermore, the method also includes:

[0183] The capping capacity of the unconformity traps in the aforementioned formations is evaluated.

[0184] Preferably, the evaluation of the capping capacity of the unconformity trap includes:

[0185] Based on actual drilling data, geophysical prediction techniques were used to clarify the lithological distribution of the trap's roof and floor.

[0186] Based on the quantitative relationship between caprock breakthrough pressure and sonic logging, geophysical methods are used to evaluate caprock quality.

[0187] Example 5

[0188] According to an embodiment of the present invention, an electronic device is also provided, the electronic device including a memory and a processor, the memory storing program code that can run on the processor, the program code being executed by the processor to implement the formation unconformity trap identification method as described in any of the above embodiments.

[0189] The method includes:

[0190] Identification of unconformities in the block to be explored based on pre-processed seismic data;

[0191] Seismic forward modeling was performed on the identified unconformities to obtain stratigraphic over-stripping boundary identification parameters;

[0192] The stratigraphic over-stripping boundary is finely characterized based on the stratigraphic over-stripping boundary identification parameters.

[0193] Reservoir characteristics and effective reservoirs are predicted to obtain reservoir maps;

[0194] Based on the reservoir map and the stratigraphic over-exfoliation boundary, trap boundaries are delineated and basic trap parameters are obtained to identify stratigraphic unconformity traps.

[0195] Furthermore, before identifying unconformities in the block to be explored based on pre-processed seismic data, the method further includes:

[0196] Determine the geological conditions for the development of unconformity traps in the proposed exploration block.

[0197] Preferably, the pre-processed seismic data includes: stratigraphic contact relationships, paleontological information, volcanic activity information, and well logging curves; the identification of unconformities in the block to be explored based on the pre-processed seismic data includes:

[0198] Based on the stratigraphic contact relationship, the paleontological information, and the volcanic activity information, isotope dating technology is used to identify the unconformity of the block to be explored.

[0199] Based on the well logging curves, unconformity surfaces are identified in the block to be explored.

[0200] Based on the geological identification and well logging identification of the unconformity, high-order time-frequency analysis technology is used to constrain inter-well tracking in order to achieve seismic identification of the unconformity.

[0201] Preferably, the identified unconformities include unconformities of different order levels and different types; the step of performing seismic forward modeling on the identified unconformities to obtain stratigraphic over-stripping boundary identification parameters includes:

[0202] Seismic forward modeling was performed on various combinations of unconformities of different order levels and types, with different lithologies, velocities, and stratigraphic dip angles above and below the surface, to obtain seismic response characteristics;

[0203] The stratigraphic over-stripping boundary identification parameters are obtained based on the seismic response characteristics.

[0204] Preferably, the step of finely characterizing the stratigraphic over-stripping boundary based on the stratigraphic over-stripping boundary identification parameters includes:

[0205] Based on the stratigraphic over-stripping boundary identification parameters, the stratigraphic over-stripping boundary is finely characterized using seismic attribute instantaneous phase technology, angle seismic extrapolation technology, ant body processing technology, horizontal slicing technology, and geostatistical methods.

[0206] Preferably, the step of predicting reservoir characteristics and effective reservoirs to obtain a reservoir map includes:

[0207] The reservoir characteristics are obtained through core and well logging analysis; wherein, the reservoir characteristics include: lithological characteristics, lithofacies characteristics, and physical property characteristics;

[0208] The effective reservoirs are predicted using seismic inversion and convergent stratigraphic seismic attribute techniques.

[0209] Based on the reservoir characteristics and the effective reservoir, the reservoir map is obtained.

[0210] Furthermore, before delineating the trap boundary based on the reservoir map and the stratigraphic over-exfoliation boundary and obtaining the basic trap parameters to identify the stratigraphic unconformity trap, the method further includes:

[0211] Analyze the sealing conditions of the top and bottom slabs; and,

[0212] Obtain the matching relationship between structural lines, stratigraphic stripping lines, and lithological pinch-out lines;

[0213] The process of delineating trap boundaries and obtaining basic trap parameters based on the reservoir map and the stratigraphic over-exfoliation boundary to identify stratigraphic unconformity traps includes:

[0214] Based on the top and bottom plate sealing conditions and the matching relationship, the reservoir map is superimposed with the stratigraphic over-stripping boundary to delineate the trap boundary;

[0215] The basic parameters of the trap are obtained based on the trap boundary to identify the unconformity trap in the formation.

[0216] Furthermore, the method also includes:

[0217] The capping capacity of the unconformity traps in the aforementioned formations is evaluated.

[0218] Preferably, the evaluation of the capping capacity of the unconformity trap includes:

[0219] Based on actual drilling data, geophysical prediction techniques were used to clarify the lithological distribution of the trap's roof and floor.

[0220] Based on the quantitative relationship between caprock breakthrough pressure and sonic logging, geophysical methods are used to evaluate caprock quality.

[0221] The stratigraphic unconformity trap identification method, apparatus, storage medium, and electronic equipment provided in this invention identify unconformities in the exploration block based on pre-processed seismic data, perform seismic forward modeling on the identified unconformities to obtain stratigraphic over-stripping boundary identification parameters, finely characterize the stratigraphic over-stripping boundary based on the stratigraphic over-stripping boundary identification parameters, predict reservoir characteristics and effective reservoirs, obtain a reservoir map, and characterize the trap boundary based on the reservoir map and the stratigraphic over-stripping boundary to obtain basic trap parameters, thereby identifying stratigraphic unconformity traps. This enables the identification of stratigraphic unconformity traps to be standardized, uniform, accurate, and effective. In other words, the technical solution provided in this invention can identify stratigraphic unconformity traps in a standardized, uniform, accurate, and effective manner, thereby improving the evaluation and management level of stratigraphic unconformity traps.

[0222] The present invention also has the following advantages:

[0223] (1) This invention standardizes the key points and operation procedures for identifying and describing unconformity traps, improves the accuracy of describing unconformity traps, the level of evaluation and management of unconformity traps, and the drilling success rate of unconformity traps, laying the foundation for efficient exploration of unconformity type traps.

[0224] (2) This invention has a good theoretical basis, as well as good operability and practicality.

[0225] (3) The present invention has wide applicability and can be applied to the identification, description and evaluation of unconformity traps in different basins.

[0226] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed.

[0227] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of the embodiments of the present invention, depending on actual needs.

[0228] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0229] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause an electronic device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0230] While the embodiments disclosed in this invention are as described above, the content is merely for the purpose of facilitating understanding of the invention and is not intended to limit the invention. Any person skilled in the art to which this invention pertains may make any modifications and changes in form and detail of the implementation without departing from the spirit and scope disclosed herein; however, the scope of protection of this invention shall still be determined by the scope defined in the appended claims.

Claims

1. A method for identifying stratigraphic unconformity traps, characterized in that, The method includes: Identification of unconformities in the block to be explored based on pre-processed seismic data; Seismic forward modeling was performed on the identified unconformities to obtain stratigraphic over-stripping boundary identification parameters; The stratigraphic over-stripping boundary is finely characterized based on the stratigraphic over-stripping boundary identification parameters. Reservoir characteristics and effective reservoirs are predicted to obtain reservoir maps; Based on the reservoir map and the stratigraphic over-stripping boundary, the trap boundary is delineated and the basic trap parameters are obtained to identify stratigraphic unconformity traps. The pre-processed seismic data includes: stratigraphic contact relationships, paleontological information, volcanic activity information, and well logging curves; the identification of unconformities in the block to be explored based on the pre-processed seismic data includes: Based on the stratigraphic contact relationship, the paleontological information, and the volcanic activity information, isotope dating technology is used to identify the unconformity of the block to be explored. Based on the well logging curves, unconformity surfaces are identified in the block to be explored. Based on the geological identification and well logging identification of the unconformity, high-order time-frequency analysis technology is used to constrain inter-well tracking in order to achieve seismic identification of the unconformity. The process of predicting reservoir characteristics and effective reservoirs to obtain a reservoir map includes: The reservoir characteristics are obtained through core and well logging analysis; wherein, the reservoir characteristics include: lithological characteristics, lithofacies characteristics, and physical property characteristics; The effective reservoirs are predicted using seismic inversion and convergent stratigraphic seismic attribute techniques. Based on the reservoir characteristics and the effective reservoir, the reservoir map is obtained; Before delineating the trap boundaries and obtaining basic trap parameters based on the reservoir map and the stratigraphic over-exfoliation boundary to identify stratigraphic unconformity traps, the method further includes: Analyze the sealing conditions of the top and bottom slabs; and, Obtain the matching relationship between structural lines, stratigraphic stripping lines, and lithological pinch-out lines; The process of delineating trap boundaries and obtaining basic trap parameters based on the reservoir map and the stratigraphic over-exfoliation boundary to identify stratigraphic unconformity traps includes: Based on the top and bottom plate sealing conditions and the matching relationship, the reservoir map is superimposed with the stratigraphic over-stripping boundary to delineate the trap boundary; The basic parameters of the trap are obtained based on the trap boundary to identify the unconformity trap in the formation.

2. The method for identifying stratigraphic unconformity traps according to claim 1, characterized in that, Before identifying unconformities in the block to be explored based on pre-processed seismic data, the method further includes: Determine the geological conditions for the development of unconformity traps in the proposed exploration block.

3. The method for identifying stratigraphic unconformity traps according to claim 1, characterized in that, The identified unconformities include unconformities of different order levels and different types; the seismic forward modeling of the identified unconformities to obtain stratigraphic over-stripping boundary identification parameters includes: Seismic forward modeling was performed on various combinations of unconformities of different order levels and types, with different lithologies, velocities, and stratigraphic dip angles above and below the surface, to obtain seismic response characteristics; The stratigraphic over-stripping boundary identification parameters are obtained based on the seismic response characteristics.

4. The method for identifying stratigraphic unconformity traps according to claim 1, characterized in that, The detailed characterization of the stratigraphic over-exfoliation boundary based on the stratigraphic over-exfoliation boundary identification parameters includes: Based on the stratigraphic over-stripping boundary identification parameters, the stratigraphic over-stripping boundary is finely characterized using seismic attribute instantaneous phase technology, angle seismic extrapolation technology, ant body processing technology, horizontal slicing technology, and geostatistical methods.

5. The method for identifying stratigraphic unconformity traps according to claim 1, characterized in that, The method further includes: The capping capacity of the unconformity traps in the aforementioned formations is evaluated.

6. The method for identifying stratigraphic unconformity traps according to claim 5, characterized in that, The evaluation of the capping capacity of the unconformity trap includes: Based on actual drilling data, geophysical prediction techniques were used to clarify the lithological distribution of the trap's roof and floor. Based on the quantitative relationship between caprock breakthrough pressure and sonic logging, geophysical methods are used to evaluate caprock quality.

7. A stratigraphic unconformity trap identification device for implementing the stratigraphic unconformity trap identification method according to any one of claims 1-6, characterized in that, The device includes: Unconformity identification unit is used to identify unconformities in the block to be explored based on pre-processed seismic data; Seismic forward modeling unit is used to perform seismic forward modeling on the identified unconformity surface to obtain stratigraphic over-stripping boundary identification parameters; The stratigraphic over-exfoliation boundary characterization unit is used to finely characterize the stratigraphic over-exfoliation boundary based on the stratigraphic over-exfoliation boundary identification parameters; The prediction unit is used to predict reservoir characteristics and effective reservoirs to obtain a reservoir map; The trap boundary characterization unit is used to characterize the trap boundary and obtain the basic trap parameters based on the reservoir map and the stratigraphic over-exfoliation boundary, so as to identify stratigraphic unconformity traps.

8. A storage medium storing program code, characterized in that, When the program code is executed by the processor, it implements the stratigraphic unconformity trap identification method as described in any one of claims 1 to 6.

9. An electronic device, characterized in that, The electronic device includes a memory and a processor. The memory stores program code that can run on the processor. When the program code is executed by the processor, it implements the stratigraphic unconformity trap identification method as described in any one of claims 1 to 6.

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