A seismic geological analysis method and device for salt structures in a low signal-to-noise ratio area, an electronic device, a storage medium and a computer program product

Abstract

This invention relates to the fields of structural geology and geophysical research, and particularly to a seismic geological analysis method, apparatus, electronic equipment, storage medium, and computer program product for salt structures in low signal-to-noise ratio areas. The method includes: identifying target areas with gypsum-salt structures in low signal-to-noise ratio areas based on the sedimentary background of gypsum-salt development and regional dynamic conditions; acquiring seismic profiles and seismic reflection information of the target areas based on geophysical data; obtaining outcrop information of the surfaces traversed by the seismic profile through field measurements; and performing seismic geological analysis of salt structures in the target areas based on the outcrop information and seismic reflection information. This invention facilitates related work in areas with poor seismic data quality and low signal-to-noise ratios, effectively improving the reliability, accuracy, and scientific rigor of (gypsum)-salt structure interpretation. Its effective application in the western basin has shown a high degree of agreement between predicted results and actual drilling findings.

Description

Technical Field

[0001] This invention relates to the fields of structural geology and geophysical research technology, and in particular to a seismic geological analysis method, apparatus, electronic device, storage medium and computer program product for salt structures in low signal-to-noise ratio areas. Background Technology

[0002] Salt structures are formed when deeply buried salt deposits are subjected to the load of a thick overlying layer, causing a density inversion that leads to salt flow and uplift. This results in structural deformation of the rock strata and surrounding rocks, forming structural patterns such as salt domes (salt diapirs) and flow-induced folds. Under different geological conditions, rock salt undergoes plastic flow, influencing the structural deformation characteristics of the surrounding strata and ultimately forming various salt structure deformation patterns. This reflects the complex interaction between rock salt and the overlying layers during the formation of salt structures.

[0003] Currently, tectonic deformation and evolution significantly influenced by salt tectonic movements have been observed in approximately 120 basins worldwide, across four types: cratonic basins, syn-rift basins, post-rift passive continental margin basins, continental collision zones, and foreland basins. In particular, the development of gypsum-salt structures in oil and gas basins such as the Gulf of Mexico in North America and the Caspian Sea in Central Asia has been closely linked to oil and gas discoveries in recent years. Gypsum-salt structures, as an important structural style in oil and gas basins, are increasingly attracting the attention of geologists and petroleum geologists.

[0004] Due to interference from surface geological conditions and the complex deformation of gypsum-salt formations, the seismic data quality of gypsum-salt structures is generally poor, posing a significant challenge to the interpretation and identification of salt rocks and related traps. For the interpretation and identification of salt structural traps with relatively simple salt rock deformation and high signal-to-noise ratio seismic data, research can be conducted based on techniques such as regional tectonic evolution, geomechanics, analysis of salt rock deformation mechanisms, forward and inverse modeling, and paleotectonic reconstruction. However, for basins covered by deserts or Gobi, with low signal-to-noise ratios and poor seismic data quality, the interpretation and characterization of gypsum-salt structures are often more difficult, frequently leading to the neglect and omission of these structures. This, in turn, can cause misunderstandings about their geometric morphology, evolutionary process, and formation mechanism. Therefore, it is necessary to utilize a combined seismic and geological approach to accurately determine the development of gypsum-salt structures, thus aiding in oil and gas exploration. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a seismic geological analysis method, apparatus, electronic equipment, storage medium, and computer program product for salt structures in low signal-to-noise ratio areas. The aim is to effectively improve the accuracy of (gypsum) salt structure interpretation and provide technical support for the analysis of complex structures in oil and gas basins. This invention provides the following technical solution:

[0006] In a first aspect of the invention, a seismic geological analysis method for salt structures in low signal-to-noise ratio areas is provided, the method comprising,

[0007] Based on the sedimentary background of gypsum-salt development and regional dynamic conditions, target areas with gypsum-salt structures in low signal-to-noise ratio regions were identified.

[0008] Based on geophysical data, obtain seismic profiles and seismic reflection information of the target area;

[0009] Information on outcrops along the surface traversed by the seismic profile is obtained through field measurements.

[0010] Based on outcrop information and seismic reflection information, seismic geological analysis of salt structures in the target area is performed.

[0011] Furthermore, the outcrop information includes surface attitude data and surface breakpoint data;

[0012] Surface attitude data includes stratigraphic attitude and stratigraphic information;

[0013] Surface fault data includes fault fault points and attitude information.

[0014] Furthermore, based on outcrop and seismic reflection information, seismic geological analysis of the salt structure in the target area is performed, including:

[0015] The outcrop information is projected onto the corresponding position of the seismic profile to obtain the projected seismic profile;

[0016] Based on the projected seismic profile, the contact relationship between strata and faults on the projected seismic profile is obtained.

[0017] Based on the contact relationship between strata and faults on the projected seismic profile, a seismic geological analysis of the salt structure in the target area is performed.

[0018] Further, projecting the outcrop information onto the corresponding location on the seismic profile includes:

[0019] Projecting stratigraphic attitude and stratigraphic information onto the corresponding locations on the seismic profile; and / or,

[0020] The fault fault points and attitude information are projected onto the corresponding locations on the seismic profile.

[0021] Furthermore, based on the contact relationship between strata and faults on the projected seismic profile, a seismic geological analysis of the salt structure in the target area is performed, including:

[0022] When unconformity occurs between overlying and underlying strata on the strata and faults in the projected seismic profile, localized strata thickening occurs in the target area, and strong amplitude, low-frequency reflection characteristics appear on the seismic facies,

[0023] The projected seismic profiles, combined with other geophysical data, are used to perform seismic geological analysis of salt structures in the target area.

[0024] Furthermore, other geophysical data include gravity exploration data, magnetic exploration data, or electrical exploration data.

[0025] In a second aspect of the invention, a seismic geological analysis device for salt structures in low signal-to-noise ratio areas is provided, the device comprising,

[0026] The first acquisition module is used to acquire target areas with gypsum-salt structures in low signal-to-noise ratio areas based on the sedimentary background of gypsum-salt development and regional dynamic conditions.

[0027] The second acquisition module is used to acquire seismic profiles and seismic reflection information of the target area based on geophysical data;

[0028] The third acquisition module is used to acquire outcrop information of the surface through which the seismic profile passes by through field measurements;

[0029] The structural interpretation module is used to perform seismic geological analysis of salt structures in the target area based on outcrop information and seismic reflection information.

[0030] Furthermore, based on outcrop and seismic reflection information, seismic geological analysis of the salt structure in the target area is performed, including:

[0031] The outcrop information is projected onto the corresponding position of the seismic profile to obtain the projected seismic profile;

[0032] Based on the projected seismic profile, the contact relationship between strata and faults on the projected seismic profile is obtained.

[0033] Based on the contact relationship between strata and faults on the projected seismic profile, a seismic geological analysis of the salt structure in the target area is performed.

[0034] Furthermore, based on the contact relationship between strata and faults on the projected seismic profile, a seismic geological analysis of the salt structure in the target area is performed, including:

[0035] When the projected seismic profile shows unconformity between overlying and underlying strata on the strata and faults, localized strata thickening in the target area, and seismic reflection characteristics with strong amplitudes exceeding the first threshold and frequencies below the second threshold,

[0036] The projected seismic profiles, combined with other geophysical data, are used to perform seismic geological analysis of salt structures in the target area.

[0037] In a third aspect of the invention, an electronic device is provided, the electronic device comprising at least one processor and at least one memory, the memory being data-connected to the processor, wherein...

[0038] The memory stores instructions that can be executed by the at least one processor, which, when executed by the at least one processor, enables the at least one processor to perform the method described above.

[0039] In a fourth aspect of the invention, a computer-storeable medium is provided, characterized in that the storage medium stores computer instructions, which, when executed by a processor, specifically perform the steps in the method described above.

[0040] In a fifth aspect of the invention, a computer program product is provided, comprising computer instructions, characterized in that, when the computer instructions are executed by a processor, they specifically perform the steps in the method described above.

[0041] The technical effects and advantages of this invention are as follows:

[0042] This invention addresses the challenges of poor imaging and analysis of gypsum-salt structures in low signal-to-noise ratio areas. It proposes a structural analysis method that combines seismic and geological data, along with structural analysis and forward modeling verification. This method facilitates work in areas with poor seismic data quality and low signal-to-noise ratios, effectively improving the reliability, accuracy, and scientific rigor of gypsum-salt structural interpretation. Its effective application in the western basin has shown a high degree of agreement between predicted results and actual drilling findings.

[0043] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0044] Figure 1 This is a flowchart of the seismic geological analysis method for gypsum-salt structures in low signal-to-noise ratio areas provided in the embodiments of this application;

[0045] Figure 2a This is a map showing the location of seismic survey lines and field measurement points provided in the embodiments of this application;

[0046] Figure 2b This is an analytical diagram of the (paste) salt structure under low signal-to-noise ratio conditions provided in the embodiments of this application;

[0047] Figure 2c The field-measured stratigraphic attitude, fault points, and contact relationships provided in the embodiments of this application are as follows. Figure 1 ; Figure 2dThis is Figure 2, showing the field-measured stratigraphic attitude, fault points, and contact relationships provided in this application embodiment;

[0048] Figure 2e The field-measured stratigraphic attitude, fault points, and contact relationships provided in the embodiments of this application are as follows. Figure 3 ;

[0049] Figure 3 This is a structural block diagram of an electronic device according to an embodiment of this application;

[0050] Figure 4 A schematic diagram of the salt structure interpretation model provided in the embodiments of this application;

[0051] Figure 5 This is a schematic diagram of a simulation experiment on the tectonic genesis of a basin (gypsum) salt formation provided in an embodiment of this application;

[0052] Figure 6 This is a schematic diagram of the resistivity inversion profile provided in an embodiment of this application. Detailed Implementation

[0053] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0054] To address the shortcomings of existing technologies, this invention discloses a seismic geological analysis method for gypsum-salt structures in areas with low signal-to-noise ratios, such as... Figure 1 As shown, the method includes,

[0055] Step 1: Based on the sedimentary background of gypsum-salt development and regional dynamic conditions, identify target areas with gypsum-salt structures in low signal-to-noise ratio regions;

[0056] Step 2: Based on geophysical data, obtain seismic profiles and seismic reflection information of the target area;

[0057] Step 3: Obtain information on outcrops along the surface traversed by the seismic profile through field measurements;

[0058] Step 4: Based on outcrop information and seismic reflection information, perform seismic geological analysis of salt structures in the target area.

[0059] In a specific embodiment of the present invention, the specific operation of step 1 is as follows: Based on the surface geological survey, the sedimentary background of the basin is analyzed to determine whether a certain basin or a certain stratum within the basin has the background and conditions for gypsum-salt development. Gypsum-salt rocks are mainly distributed in terrestrial sedimentary basins with a salt lake background. In marine sedimentary basins, which are in an arid evaporation environment, gypsum-salt rocks develop over a large area. The dynamic background of gypsum-salt structural development is analyzed to determine the possible causes and types of gypsum-salt structures. The structural style of rock structures is jointly controlled by dynamic mechanisms and gypsum-salt layers. In extensional basins, rock structures are closely related to the difference in sedimentary load overlying. The formation of salt domes can cause the overlying strata to arch, forming graben-like or radial fractures. In compressional basins, due to the incoordination of deformation between gypsum-salt rocks and other sedimentary rock layers, detachment-type structures are easily formed.

[0060] Therefore, based on the sedimentary background of gypsum development and regional dynamic conditions, when the geological history of the study area has a sedimentary background of arid lake basins or lagoons and tidal flats with gypsum development, it can be confirmed that this stratum is the target area of ​​gypsum structure.

[0061] Alternatively, during actual surface geological surveys, if a certain layer of gypsum salt is found to be exposed on the surface, the area where that layer is located can be identified as the target area where gypsum salt structures exist.

[0062] Alternatively, in a drilled basin, if a well encounters gypsum salt at a certain stratum, the area where that stratum is located can be identified as the target area where gypsum salt structures exist.

[0063] In a specific embodiment of the present invention, step 2, which involves obtaining the seismic profile and seismic reflection information of the target area based on geophysical data, is specifically performed as follows:

[0064] Combination Figures 2a-2b Based on the location of the seismic survey lines and the location map of the field measurement points ( Figure 2a Select a section containing a white line as the seismic profile. The seismic profile is shown below. Figure 2b As shown.

[0065] In a specific embodiment of the present invention, in step 3, the outcrop information includes surface attitude data and surface fault data; the surface attitude data includes stratigraphic attitude and stratification information; the surface fault data includes fault faults and attitude information.

[0066] In a specific embodiment of the present invention, step 4 is characterized by interpreting the salt structure of the target area based on outcrop information and seismic reflection information, including:

[0067] Step 401: Project the outcrop information onto the corresponding position of the seismic profile to obtain the projected seismic profile; the specific operations are as follows: ① Obtain surface attitude data and project it, projecting the stratigraphic attitude and stratigraphic information along the survey line measured in the field onto the corresponding position of the seismic profile; ② Obtain surface fault data and project it, projecting the fault faults and attitude information along the survey line measured in the field onto the corresponding position of the seismic profile;

[0068] Step 402: Based on the projected seismic profile, determine the contact relationship between the strata and faults on the projected seismic profile;

[0069] Step 403: Based on the contact relationship between strata and faults on the projected seismic profile, perform seismic geological analysis of the salt structure in the target area, specifically including:

[0070] When there is an unconformity between the overlying strata and the underlying strata, and when there is localized thickening of the strata in the target area, and when strong reflections and large-scale weak reflections are observed on the seismic facies, it indicates that gypsum and salt deposits may exist in the target area.

[0071] When unconformity occurs between overlying and underlying strata on the strata and faults in the projected seismic profile, and when local strata thickening occurs in the target area and strong amplitude, low frequency reflection characteristics are observed on the seismic facies, the projected seismic profile is combined with other geophysical data to conduct seismic geological analysis of the salt structure in the target area.

[0072] Other geophysical data include exploration methods such as gravity exploration, magnetic exploration, and electrical exploration.

[0073] This invention addresses the problems of poor imaging and difficult analysis of gypsum-salt structures in low signal-to-noise ratio areas. It proposes a structural analysis method that combines seismic and geological data, as well as structural analysis and forward modeling verification. This method facilitates related work in areas with poor seismic data quality and low signal-to-noise ratio, effectively improving the reliability, accuracy, and scientific rigor of gypsum-salt structural interpretation. Its effective application in the western basin has shown a high degree of agreement between predicted results and actual drilling findings.

[0074] The present invention also provides a seismic geological analysis device for gypsum-salt structures in low signal-to-noise ratio areas, the device comprising,

[0075] The first acquisition module is used to acquire target areas with gypsum-salt structures in low signal-to-noise ratio areas based on the sedimentary background of gypsum-salt development and regional dynamic conditions.

[0076] The second acquisition module is used to acquire seismic profiles and seismic reflection information of the target area based on geophysical data;

[0077] The third acquisition module is used to acquire outcrop information of the surface through which the seismic profile passes by through field measurements;

[0078] The structural interpretation module is used to perform seismic geological analysis of salt structures in the target area based on outcrop information and seismic reflection information.

[0079] In one specific embodiment of the present invention, seismic geological analysis of salt structures in a target area is performed based on outcrop information and seismic reflection information, including:

[0080] The outcrop information is projected onto the corresponding position of the seismic profile to obtain the projected seismic profile;

[0081] Based on the projected seismic profile, determine the contact relationship between strata and faults on the projected seismic profile.

[0082] Based on the determination of the contact relationship between strata and faults on the projected seismic profile, a seismic geological analysis of the salt structure in the target area is performed.

[0083] In one specific embodiment of the present invention, seismic geological analysis of salt structures in a target area is performed based on the contact relationship between strata and faults on the projected seismic profile, including:

[0084] When there is an unconformity between the overlying strata and the underlying strata, and when there is localized thickening of the strata in the target area, and when strong reflections and large-scale weak reflections are observed on the seismic facies, it indicates that gypsum and salt deposits may exist in the target area.

[0085] When unconformity between overlying and underlying strata is observed on the projected seismic profile and faults, and localized strata thickening is observed in the target area along with strong amplitude and low-frequency reflections on the seismic facies, the projected seismic profile is combined with other geophysical data to perform seismic geological analysis of the salt structure in the target area. Other geophysical data include exploration methods such as gravity exploration, magnetic exploration, and electrical exploration.

[0086] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0087] Based on the above disclosure, the present invention also provides an electronic device. For example... Figure 3 As shown, the electronic device of this disclosure includes at least one processor electrically connected to the present invention and at least one memory electrically connected to the processor, wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the method steps as described above by the controller.

[0088] An embodiment of the present invention also provides a storable medium storing computer instructions, which, when executed by a processor, are specifically executed according to the steps in the method described in the above embodiment.

[0089] An embodiment of the present invention also provides a computer program product, including computer instructions, which, when executed by a processor, specifically follow the steps in the method described in the above embodiment.

[0090] The technical solution of the present invention will be further described below with reference to specific embodiments.

[0091] A specific basin was selected to test the effectiveness of this invention. This basin has undergone multiple phases of tectonic evolution during the Mesozoic and Cenozoic eras. Furthermore, the surface is covered by Gobi Desert and alpine meadows, resulting in poor seismic data quality and a low signal-to-noise ratio, making tectonic analysis difficult and determining a suitable interpretation scheme challenging. Therefore, the technical method of this invention was used for practical verification.

[0092] First, the seismic profile in the time domain is converted into a seismic profile in the depth domain. Figure 2b As shown in the figure, the red lines represent faults. On the far right of the profile, growth strata are developed above the Cretaceous on the northern flank of the anticline structure, revealing unique seismic reflection characteristics of the gradual formation of gypsum (salt) structures. Faults (1)-(14) thrust from north to south, forming a set of southward-thrusting thrust-nappe structures on the profile. Faults (15)-(18) are northward-thrusting faults, with their dip direction opposite to the regional northward-southward compressive stress. Softer strata may exist at depth in this area, generating a localized thrust system. Two sets of fault systems were found: one set of southward-facing imbricate thrust structures, and another set of northward-facing thrust faults at the northern end of the profile. This anomaly is considered to be related to the thick gypsum-salt deposits of the Jurassic Quemocuo Formation, resulting in the development of a thrust fault system in the piedmont. Based on this, a detailed interpretation of the gypsum (salt) structures on the northern side of the profile is provided.

[0093] Field measurements of stratigraphic attitude and faults were conducted along the survey line and projected onto the seismic profile. Based on limited seismic reflections, the strata and faults were delineated. Figure 2c , 2d As shown in Figure 2e, the angles in the figure represent the attitude of the strata; the upper side represents the dip direction, and the western side represents the dip angle (in the figure, N represents the north and E represents the east). From Figure 2c It can be seen that the Middle Jurassic strata thrust southward over the nearly horizontally dipping Cenozoic strata. The figure shows a fault between the conglomerate (horizontally dipping) and the adjacent bioclastic limestone, reflecting the reverse fault contact at this point; from Figure 2d It can be seen that a fracture occurred between the adjacent bioclastic limestone and limestone, with two faults in the Middle Jurassic thrusting westward, exhibiting an imbricate composite characteristic; from Figure 2eIt is known that a fault occurred between the adjacent limestone and conglomerate, with the Middle Jurassic thrusting northward onto the Cretaceous, reflecting the contact relationship of thrusting at this point.

[0094] By analyzing the structure of the salt formation, an explanatory model for the salt formation is obtained, such as... Figure 4 As shown, a set of imbricate shovel-shaped faults developed on the right side of the cross-section. This set of faults slipped on a certain weak layer, indicating that there may be salt structures in this area.

[0095] To verify the validity of the gypsum salt structure explanation, we chose to conduct a sand box physical simulation experiment using silica gel to simulate the gypsum salt layer. The experimental results are as follows: Figure 5 As shown, the structural physical simulation experiment images of using silica gel to simulate the gypsum-salt layer and quartz sand to simulate other surrounding rocks show that the F5, F6, and F7 fractures slipped into the silica gel layer, demonstrating comparability with the seismic interpretation. The experiment confirmed the tectonic origin of the slippage along the weak gypsum-salt layer, further verifying the scientific validity and rationality of the interpretation, and was confirmed by subsequent drilling.

[0096] according to Figure 5 and Figure 4 The comparison shows that Figure 5 The development of the mid-mortise and tenon structure style in the region and Figure 4 The regions in the image are the same as those where salt structures may exist, further confirming the existence of the gypsum salt layer.

[0097] Figure 6 To obtain and through time-frequency electromagnetics Figure 2b The seismic profile shown corresponds to the resistivity inversion profile, based on Figure 6 It can be seen that the pink color exhibits the high resistivity characteristic of gypsum salts, indicating the presence of a gypsum salt layer in this region. This can be confirmed by comparison. Figure 6 and projected seismic profile Figure 4 It can be seen that the pink area exhibits the characteristic high resistivity of gypsum salts. Figure 4 The presence of salt structures in the same region further confirms the existence of the gypsum salt layer.

[0098] Structural physics simulation verification, specifically the interpretation of gypsum-salt tectonics, is a possibility based on geological and seismic reflections. However, tectonic interpretations are subject to multiple interpretations, necessitating the use of experimental methods in tectonic physics to verify this possibility. Tectonic simulation experiments are a physical experimental method for studying and simulating the deformation characteristics, formation mechanisms, and dynamic processes of natural geological tectonic phenomena. In simulation experiments, following the principle of similarity, different materials are used to simulate gypsum-salt and other brittle surrounding rocks. The rationality of the interpretation is verified by comparing the deformation of the simulated experimental materials with the interpreted seismic profiles, allowing for further corrections.

[0099] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A seismic geological analysis method for salt structures in low signal-to-noise ratio areas, characterized in that, The method includes, Based on the sedimentary background of gypsum-salt development and regional dynamic conditions, target areas with gypsum-salt structures in low signal-to-noise ratio regions were identified. Based on geophysical data, obtain seismic profiles and seismic reflection information of the target area; Information on outcrops along the surface traversed by the seismic profile is obtained through field measurements. Based on outcrop information and seismic reflection information, seismic geological analysis of salt structures in the target area is performed.

2. The seismic geological analysis method for salt structures in low signal-to-noise ratio areas according to claim 1, characterized in that, The outcrop information includes surface attitude data and surface breakpoint data; Surface attitude data includes stratigraphic attitude and stratigraphic information; Surface fault data includes fault fault points and attitude information.

3. The seismic geological analysis method for salt structures in low signal-to-noise ratio areas according to claim 1, characterized in that, Based on outcrop and seismic reflection information, seismic geological analysis of salt structures in the target area is performed, including: The outcrop information is projected onto the corresponding position of the seismic profile to obtain the projected seismic profile; Based on the projected seismic profile, the contact relationship between strata and faults on the projected seismic profile is obtained. Based on the contact relationship between strata and faults on the projected seismic profile, a seismic geological analysis of the salt structure in the target area is performed.

4. The seismic geological analysis method for salt structures in low signal-to-noise ratio areas according to claim 3, characterized in that, Projecting the outcrop information onto the corresponding location on the seismic profile includes: Projecting stratigraphic attitude and stratigraphic information onto the corresponding locations on the seismic profile; and / or, The fault fault points and attitude information are projected onto the corresponding locations on the seismic profile.

5. The seismic geological analysis method for salt structures in low signal-to-noise ratio areas according to claim 3, characterized in that, Based on the contact relationship between strata and faults on the projected seismic profile, a seismic geological analysis of the salt structure in the target area is performed, including: When unconformity occurs between overlying and underlying strata on the strata and faults in the projected seismic profile, localized strata thickening occurs in the target area, and strong amplitude, low-frequency reflection characteristics appear on the seismic facies, The projected seismic profiles, combined with other geophysical data, are used to perform seismic geological analysis of salt structures in the target area.

6. The seismic geological analysis method for salt structures in low signal-to-noise ratio areas according to claim 5, characterized in that, Other geophysical data include gravity exploration data, magnetic exploration data, or electrical exploration data.

7. A seismic geological analysis device for salt structures in low signal-to-noise ratio areas, characterized in that, The device includes, The first acquisition module is used to acquire target areas with gypsum-salt structures in low signal-to-noise ratio areas based on the sedimentary background of gypsum-salt development and regional dynamic conditions. The second acquisition module is used to acquire seismic profiles and seismic reflection information of the target area based on geophysical data; The third acquisition module is used to acquire outcrop information of the surface through which the seismic profile passes by through field measurements; The structural interpretation module is used to perform seismic geological analysis of salt structures in the target area based on outcrop information and seismic reflection information.

8. The seismic geological analysis device for salt structures in low signal-to-noise ratio areas according to claim 7, characterized in that, Based on outcrop and seismic reflection information, seismic geological analysis of salt structures in the target area is performed, including: The outcrop information is projected onto the corresponding position of the seismic profile to obtain the projected seismic profile; Based on the projected seismic profile, the contact relationship between strata and faults on the projected seismic profile is obtained. Based on the contact relationship between strata and faults on the projected seismic profile, a seismic geological analysis of the salt structure in the target area is performed.

9. The seismic geological analysis device for salt structures in low signal-to-noise ratio areas according to claim 8, characterized in that, Based on the contact relationship between strata and faults on the projected seismic profile, a seismic geological analysis of the salt structure in the target area is performed, including: When the projected seismic profile shows unconformity between overlying and underlying strata on the strata and faults, localized strata thickening in the target area, and seismic reflection characteristics with strong amplitudes exceeding the first threshold and frequencies below the second threshold, The projected seismic profiles, combined with other geophysical data, are used to perform seismic geological analysis of salt structures in the target area.

10. An electronic device comprising at least one processor and at least one memory, the memory being data-connected to the processor, wherein, The memory stores instructions that can be executed by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-6.

11. A computer-storable medium, characterized in that, The storable medium stores computer instructions, which, when executed by a processor, specifically perform the steps of the method as described in any one of claims 1-6.

12. A computer program product comprising computer instructions, characterized in that, When the computer instructions are executed by the processor, they specifically perform the steps in the method as described in any one of claims 1-6.

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