System and method for exporting stratigraphic profile line file adaptive to MapGIS modeling based on Petrel software

Abstract

The invention relates to the technical field of three-dimensional modeling, and discloses a system and method for exporting a stratum section line file adaptive to MapGIS modeling based on Petrel software, and the method comprises the steps: preparing three-dimensional structure planar graph data of a stratum to be modeled; establishing a vertical fault plane in Petrel software along the trend of a target section, and converting the vertical fault plane into a Surface file; utilizing a Surface operation function to generate a space intersection line between the upright fault plane and each structural plane graph; and exporting the intersecting line data as an SHP format file, and converting the intersecting line data into a line file which can be identified by a MapGIS platform. The system comprises a corresponding data preparation module, an upright fault plane construction module, an intersection line generation module and a data export conversion module. According to the method, efficient and accurate conversion of core structure data from a Petrel platform in the field of oil exploration and development to a MapGIS platform in the field of geological survey is realized, and the problem of cross-department and cross-software data barriers is solved.

Description

Technical Field

[0001] This invention relates to the field of 3D modeling technology, and in particular to a system and method for exporting stratigraphic profile files adapted for MapGIS modeling based on Petrel software. Background Technology

[0002] MapGIS is a common 3D modeling platform used by geological departments. Its basic data typically consists of point, line, and area files, and its modeling logic is based on the spatial connection of structural stratigraphic profiles. Petrel, on the other hand, is a general-purpose modeling software used in the petroleum system. Its modeling is integrated, and its modeling logic involves the spatial overlap of planar structural maps and fault models.

[0003] During the mineral rights transfer phase of shale gas geological surveys, it is necessary to coordinate between geological survey departments and oil exploration and development departments, requiring the conversion of some underlying modeling data. In particular, it is crucial to utilize existing seismic interpretation planar structural results to quickly adapt data to MapGIS 3D modeling geological structural profile files. Summary of the Invention

[0004] The purpose of this invention is to provide a system and method for exporting stratigraphic profile files adapted for MapGIS modeling based on Petrel software, addressing the current technical problem that existing technologies cannot automatically complete the conversion of underlying modeling data during the mineral rights transfer stage of shale gas geological surveys.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A method for exporting stratigraphic profile files adapted for MapGIS modeling based on Petrel software includes the following steps: S1. Prepare the 3D structural planar data of the strata to be modeled; S2. In Petrel software, create a vertical fault plane that is consistent with the orientation of the target structural profile, and convert the vertical fault plane into a surface format file. S3. Using the surface operation function of Petrel software, generate the intersection line between the vertical fracture plane and each three-dimensional structural plane in step S1. S4. Export the intersecting line data as a shapefile and convert it into a line file suitable for MapGIS modeling.

[0006] A system for exporting stratigraphic profile files adapted for MapGIS modeling based on Petrel software includes: The data preparation and acquisition module is used to acquire or import three-dimensional structural planar map data of the strata to be modeled from Petrel software; The upright section construction module is used in the Petrel platform to construct the profile orientation according to the user-defined target, and to create and convert upright section files in surface format. The intersection line generation module is communicatively connected to the data preparation and acquisition module and the vertical fracture plane construction module. It is used to call the surface operation function of the Petrel software to calculate and generate the spatial intersection line between the vertical fracture plane and the three-dimensional structural plan view. The data export and format conversion module is used to export the intersecting line data output by the intersecting line generation module into a shapefile format through the Petrel software interface, and provides tools or interfaces to convert it into a line file adapted to the MapGIS modeling platform.

[0007] The beneficial effects of this invention are as follows: 1. Achieved efficient cross-platform data conversion: Through a specific technical process, seismic interpretation results (structural plane maps) based on the Petrel platform are automatically converted into standard profile line files required for MapGIS modeling, solving the data exchange problem between the petroleum system and geological survey departments; 2. Improved efficiency and accuracy of modeling data preparation: The built-in intersection calculation and batch processing functions of Petrel software replace the traditional manual or indirect conversion methods, quickly and accurately generating multiple structural profile lines, significantly improving data preparation efficiency and reducing human error; 3. It ensures the foundation for building three-dimensional geological models: The generated standardized line files can be directly used in the MapGIS platform for three-dimensional geological structure modeling, providing a reliable and unified data foundation for the exploration, reserve calculation and development scheme design of mineral resources such as shale gas, and has important practical application value. Attached Figure Description

[0008] Figure 1 This is a simplified flowchart of the method of the present invention; Figure 2 This is step ① in generating vertical fault planes from the strike line of the HGP2012-2 stratigraphic survey line. Figure 3 This is step ② in generating vertical fault planes from the strike line of the HGP2012-2 stratigraphic survey line. Figure 4 This is step ③ in generating vertical fault planes from the strike line of the HGP2012-2 stratigraphic survey line. Figure 5 This is step ④ in generating vertical fault planes from the strike line of the HGP2012-2 stratigraphic survey line. Figure 6 The steps are: ① generating intersection lines and exporting data between the vertical fault plane and each three-dimensional structural plane diagram of hgp2012-2; Figure 7 Step ② involves generating intersection lines and exporting data between the vertical fault plane and each three-dimensional structural plane diagram in hgp2012-2. Figure 8 This refers to step ③ of generating intersection lines and exporting data between the vertical fault plane and each three-dimensional structural plane diagram of hgp2012-2; Figure 9 It is a process of quickly generating multiple structural plan diagrams using the workflow module ①; Figure 10 It is a process of quickly generating multiple structural plan diagrams using the workflow module ②; Figure 11 It is a construction plan adapted to the MapGIS modeling platform; Figure 12 This is a schematic diagram of the system structure of the present invention. Detailed Implementation

[0009] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0010] Before formally describing the present invention, a general description of the solution of the present invention will be given first to facilitate understanding.

[0011] Please refer to Figure 1 The present invention provides a method for exporting stratigraphic profile files adapted for MapGIS modeling based on Petrel software, comprising the following steps: S1. Prepare the 3D structural planar data of the strata to be modeled; S2. In Petrel software, create a vertical fault plane that is consistent with the orientation of the target structural profile, and convert the vertical fault plane into a surface format file. S3. Using the surface operation function of Petrel software, generate the intersection line between the vertical fracture plane and each three-dimensional structural plane in step S1. S4. Export the intersecting line data as a shapefile and convert it into a line file suitable for MapGIS modeling.

[0012] It should be noted that step S2 is as follows: In the construction model editing module of Petrel software, the single-point construction editing function is used to create a vertical fault with a dip angle of 90 degrees along the target construction profile. The vertical fault is converted into a surface format file, which is then used as the input surface for subsequent intersection processing.

[0013] It should be noted that step S3 includes: In the Petrel software's surface operation module, select the "create intersection with surface" function; Using the vertical fracture plane as the first input plane and each three-dimensional structural planar diagram as the second input plane, the intersection line between the two in three-dimensional space is generated.

[0014] It should be noted that when generating the intersection lines of multiple structural profiles in batches, the workflow module of Petrel software is used, including: Repeatedly call the "create intersection with surface" function in the workflow; Each three-dimensional structural planar diagram is used as the intersecting surface, and each vertical fault plane is used as the intersecting surface. All intersecting line data are generated in batches.

[0015] It should be noted that step S4 includes: Load and display the generated intersection lines in the intersection window of the Petrel software; Use the export object function to export the intersection line data in shp format; In the MapGIS platform, the shapefile is converted into a line file for modeling.

[0016] It should be noted that the three-dimensional structural planar map data in step S1 comes from seismic interpretation results, including structural layers obtained from interpretation based on two-dimensional seismic survey lines or three-dimensional seismic data volumes.

[0017] It should be noted that when establishing vertical fault planes, this is achieved by setting vertical fault pillars, specifically including: Select the "Add pillar by 1 point" method to create a fault pillar; Set the pillar type to vertical, the active point to top, and set the height value of the preset range to ensure intersection with all target ground planes.

[0018] It should be noted that the method also includes using the converted line files to perform 3D geological structure modeling in the MapGIS platform, specifically: Import multiple structural profile line files into MapGIS software; A three-dimensional geological structure model is constructed based on the spatial connection relationship between the profile lines.

[0019] Example 1 The method of the present invention includes the following steps: 1. Seismic interpretation of three-dimensional structural plane map, which can be based on two-dimensional or three-dimensional seismic data volumes; 2. Generate vertical faults along the direction of the required structural stratigraphic profile (seismic survey line); see reference. Figures 2-5 Using the construction editing function in Petrel software, a vertical fault with a dip angle of 90 degrees can be generated using the single-point construction editing function. This vertical fault plane can be converted into surface data.

[0020] 3. The intersection line between the fault surface and the three-dimensional structural plan. (See reference) Figures 6-8 This function is implemented using the "create intersection with surface" function of the Surface Operation module, and the intersection line can be displayed in three-dimensional space.

[0021] 4. Quickly generate intersection lines of multiple structural sections. This function can be performed in the workflow module of Petrel software. The workflow mainly omits the intersection steps of each structural section and different structural plan views. For example... Figure 9-10 As shown, select the Function-convert points / polygons / surfaces-create intersection with surface function. This function can be clicked multiple times to generate calculations. The left side of this module displays the intersecting 3D plane diagram, and the right side displays the desired construction plane diagram. Clicking the run module below will generate the corresponding intersection line data in the input panel.

[0022] 5. Constructing the profile and data conversion. In the intersection window, select the corresponding intersecting lines, use the export object function, and save the file as a Shapefile (.shp) file. Finally, convert the intersecting lines into a wl file suitable for MapGIS modeling. Figure 11 ).

[0023] Example 2 In recent years, significant shale gas discoveries have been made in the Permian Dalong Formation in western Hubei Province. The area surrounding Enshi City has relatively abundant 2D seismic survey lines (16 in total), and numerous Permian wells have yielded good post-drilling gas indications, with an average content of 2 m³. 3The area possesses significant commercial development potential. 3D modeling of this region is crucial for calculating the overall block's reserves and implementing subsequent horizontal fracturing wells. Currently, most drilling in the work area is conducted by geological survey departments using the MapGIS platform; however, existing seismic interpretation and 3D modeling are largely based on the Petrel platform. To facilitate data support for subsequent block transfers, which are predominantly in MapGIS format, there is an urgent need to generate structural profile data compatible with the MapGIS modeling platform using Petrel software.

[0024] Generate structural profiles P1, O1, E1, and Z from the hgp2012-2 profile and export the data in a format compatible with MapGIS modeling. This includes the following steps: 1. Generate a stratigraphic plan from raw seismic data This study primarily uses 16 two-dimensional seismic data points within the Enshi seismic area to generate three-dimensional structural planar maps of the Permian (P1), Ordovician (O1), Cambrian (E1), and Sinian (Z1) system boundaries. This series of data was generated using Petrel software or imported from other seismic interpretation software.

[0025] 2. HGP2012-2 survey line structural profile Taking the HGP2012-2 seismic line as an example, structural planar maps of the Permian, Ordovician, Cambrian, and Sinian systems are generated for the HGP2012-2 seismic line. This part mainly includes two parts: ① Establishing a vertical fault with the same strike as the HGP2012-2 seismic line; using the Fault model module's edit fault model function in the Petrel software's models interface, with the line file of the seismic line strike as a reference, selecting Add pillar by 1 point, vertical for pillar type, Top for Active point, and 12000 meters for Default height (referencing the depth of the bottom layer of the model). The purpose of this setting is to ensure that the vertical fault plane intersects with all ground strata, and then right-clicking the vertical fault plane and selecting convert to fault surface; ② Determining the intersection lines between the vertical fault plane and the bottom boundaries of the Permian (P1), Ordovician (O1), Cambrian (E1), and Sinian (Z1). Using the "create intersection with surface" function in the "Operation-convert points / polygons / surfaces" property of the surface, the intersection lines between the HGP2012-2 modeled profile and P1, O1, E1, and Z can be generated. Alternatively, the intersection line conversion can be established through workflow.

[0026] 3. Display and format conversion of structural cross-sections The intersection data of the hgp2012-2 structural surface and four strata saved in the input interface can be displayed using the intersection window. These four intersection lines can be converted into shp format, which can be displayed on the MapGIS platform.

[0027] Please refer to Figure 12 , Figure 12 This is a schematic diagram of the system structure of the present invention.

[0028] A system for exporting stratigraphic profile files adapted for MapGIS modeling based on Petrel software includes: a data preparation and acquisition module for acquiring or importing three-dimensional structural planar map data of the strata to be modeled from or importing from Petrel software; The upright section construction module is used in the Petrel platform to construct the profile orientation according to the user-defined target, and to create and convert upright section files in surface format. The intersection line generation module is communicatively connected to the data preparation and acquisition module and the vertical fracture plane construction module. It is used to call the surface operation function of the Petrel software to calculate and generate the spatial intersection line between the vertical fracture plane and the three-dimensional structural plan view. The data export and format conversion module is used to export the intersecting line data output by the intersecting line generation module into a shapefile format through the Petrel software interface, and provides tools or interfaces to convert it into a line file adapted to the MapGIS modeling platform.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 method for exporting stratigraphic profile line files adapted for MapGIS modeling based on Petrel software, characterized in that: Includes the following steps: S1. Prepare the 3D structural planar data of the strata to be modeled; S2. In Petrel software, create a vertical fault plane that is consistent with the orientation of the target structural profile, and convert the vertical fault plane into a surface format file. S3. Using the surface operation function of Petrel software, generate the intersection line between the vertical fracture plane and each three-dimensional structural plane in step S1. S4. Export the intersecting line data as a shapefile and convert it into a line file suitable for MapGIS modeling.

2. The method for exporting stratigraphic profile files adapted for MapGIS modeling based on Petrel software as described in claim 1, characterized in that: Step S2 is as follows: In the construction model editing module of Petrel software, the single-point construction editing function is used to create a vertical fault with a dip angle of 90 degrees along the target construction profile. The vertical fault is converted into a surface format file, which is then used as the input surface for subsequent intersection processing.

3. The method for exporting stratigraphic profile files adapted for MapGIS modeling based on Petrel software as described in claim 2, characterized in that: Step S3 includes: In the Petrel software's surface operation module, select the "create intersection with surface" function; Using the vertical fracture plane as the first input plane and each three-dimensional structural planar diagram as the second input plane, the intersection line between the two in three-dimensional space is generated.

4. A method for exporting stratigraphic profile files adapted for MapGIS modeling based on Petrel software according to claim 1 or 3, characterized in that: When it is necessary to generate the intersection lines of multiple construction profiles in batches, the workflow module of Petrel software is used, including: Repeatedly call the "create intersection with surface" function in the workflow; Each three-dimensional structural planar diagram is used as the intersecting surface, and each vertical fault plane is used as the intersecting surface. All intersecting line data are generated in batches.

5. The method for exporting stratigraphic profile line files adapted for MapGIS modeling based on Petrel software according to claim 1, characterized in that: Step S4 includes: Load and display the generated intersection lines in the intersection window of the Petrel software; Use the export object function to export the intersection line data in shp format; In the MapGIS platform, the shapefile is converted into a line file for modeling.

6. The method for exporting stratigraphic profile files adapted for MapGIS modeling based on Petrel software according to claim 1, characterized in that: The three-dimensional structural plane map data in step S1 comes from seismic interpretation results, including structural layers obtained from interpretation based on two-dimensional seismic survey lines or three-dimensional seismic data volumes.

7. The method for exporting stratigraphic profile files adapted for MapGIS modeling based on Petrel software according to claim 1, characterized in that: When establishing a vertical fault plane, it is achieved by setting a vertical fault pillar, specifically including: Select the "Add pillar by 1 point" method to create a fault pillar; Set the pillar type to vertical, the active point to top, and set the height value of the preset range to ensure intersection with all target ground planes.

8. The method for exporting stratigraphic profile files adapted for MapGIS modeling based on Petrel software according to claim 1, characterized in that: The method also includes using the converted line files to perform 3D geological structure modeling in the MapGIS platform, specifically: Import multiple structural profile line files into MapGIS software; A three-dimensional geological structure model is constructed based on the spatial connection relationship between the profile lines.

9. A system for exporting stratigraphic profile files adapted for MapGIS modeling based on Petrel software, characterized in that: include: The data preparation and acquisition module is used to acquire or import three-dimensional structural planar map data of the strata to be modeled from Petrel software; The upright section construction module is used in the Petrel platform to construct the profile orientation according to the user-defined target, and to create and convert upright section files in surface format. The intersection line generation module is communicatively connected to the data preparation and acquisition module and the vertical fracture plane construction module. It is used to call the surface operation function of the Petrel software to calculate and generate the spatial intersection line between the vertical fracture plane and the three-dimensional structural plan view. The data export and format conversion module is used to export the intersecting line data output by the intersecting line generation module into a shapefile format through the Petrel software interface, and provides tools or interfaces to convert it into a line file adapted to the MapGIS modeling platform.

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