Method and device for calculating formation occurrence

Abstract

The present invention discloses a formation occurrence calculation method and device, which can be used in the field of oil and gas exploration and development. The method includes: obtaining the formation strike, formation dip and formation dip of a rock formation sample; determining the formation strike marked on a horizontal slice obtained by grinding the rock formation sample, and determining the formation dip marked on a vertical slice obtained by grinding the rock formation sample; performing image analysis on the horizontal slice and the vertical slice, respectively determining the layer interface of the horizontal slice and the vertical slice, respectively marking the layer interface of the horizontal slice and the vertical slice, and obtaining the marked formation occurrence; comparing the formation strike, field dip and marked formation occurrence respectively according to the marks on the horizontal slice and the vertical slice, and calculating the true formation strike, true formation dip and true formation dip according to the comparison result and the formation dip. The present invention can improve the accuracy of the formation occurrence observation result and reduce the workload of the formation occurrence observation.

Description

Technical Field

[0001] The present invention relates to the field of oil and gas exploration and development, and in particular to a formation occurrence calculation method and device. Background Art

[0002] This section is intended to provide a background or context to the embodiments of the invention recited in the claims. No admission is made that the description herein is prior art by inclusion in this section.

[0003] Accurate calculation of stratum occurrence is of guiding value for determining the direction of ancient water flow (distribution of sedimentary reservoirs), analyzing the direction of oil and gas migration and accumulation, and the location of preservation, and other reservoir conditions. It is also an important part of oil and gas exploration research. The occurrence of strata is one of the elements that oil and gas surveyors often need to measure. Strata are layered rocks formed in different geological periods. Layers are usually separated by obvious interfaces or sedimentary discontinuities. However, changes in the particle size, composition, fossils, color, and physical properties of rock fragments in the same period result in interfaces that are not very obvious.

[0004] At present, there are three main methods for determining the formation occurrence: field measurement, formation dip logging, and seismic formation paleo-structural restoration. The field measurement method mainly relies on the geological compass. Affected by the instrument accuracy, geological structural background and operator level, the measurement range is limited, the result accuracy is low, and the error is large. It is not applicable to some large-scale, long-distance or difficult-to-identify formation structural surfaces. Formation dip logging is a collection of various formation interface responses of underground rock formations. The formation occurrence is obtained through formation dip logging data. For formations with relatively developed bedding, a more satisfactory effect can be obtained, but for formations with strong rock heterogeneity, secondary sutures, cracks and caves, the correlation of the conductivity curve becomes poor, resulting in poor dip data processing effect. It is difficult to obtain more accurate formation occurrence data using dip logging. The formation interface resolution of the seismic formation paleo-structural restoration method is low, the workload of layer interpretation is large, and the accuracy is low. Summary of the invention

[0005] The embodiment of the present invention provides a formation occurrence calculation method, which is used to improve the accuracy of formation occurrence observation results, reduce the workload of formation occurrence observation, and improve work efficiency. The method includes:

[0006] Obtaining: stratigraphic strike, stratigraphic dip and stratigraphic inclination of the rock formation samples measured from the rock formation samples, wherein the rock formation samples are collected from the outcrops in the field;

[0007] Determine the stratigraphic strike marked on the horizontal slice obtained by grinding the rock sample, and determine the stratigraphic dip marked on the vertical slice obtained by grinding the rock sample;

[0008] Perform image analysis on horizontal slices and vertical slices, determine the layer interfaces of horizontal slices and vertical slices respectively, mark the layer interfaces of horizontal slices and vertical slices respectively, and obtain the marked stratum occurrence;

[0009] According to the marks on the horizontal and vertical thin sections, the formation strike and field dip are compared with the marked formation occurrence, and the true formation strike, true formation dip and true formation dip are calculated based on the comparison results and the formation dip.

[0010] The embodiment of the present invention further provides a formation occurrence calculation device, which is used to improve the accuracy of formation occurrence observation results, reduce the workload of formation occurrence observation, and improve work efficiency. The device includes:

[0011] The acquisition and measurement module is used to obtain the following measured results of the rock formation samples: the stratigraphic strike, stratigraphic dip and stratigraphic inclination of the rock formation samples, wherein the rock formation samples are collected from outcrops in the field;

[0012] A marking module, used to determine the stratigraphic strike marked on the horizontal slice obtained by grinding the rock sample, and to determine the stratigraphic dip marked on the vertical slice obtained by grinding the rock sample;

[0013] An analysis module is used to perform image analysis on horizontal slices and vertical slices, respectively determine the layer interfaces of the horizontal slices and vertical slices, respectively mark the layer interfaces of the horizontal slices and vertical slices, and obtain the marked stratum occurrence;

[0014] The calculation module is used to compare the formation strike, field dip and marked formation occurrence according to the marks on the horizontal slices and vertical slices, and calculate the true formation strike, true formation dip and true formation dip according to the comparison results and the formation dip.

[0015] An embodiment of the present invention further provides a computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the above-mentioned formation occurrence calculation method when executing the computer program.

[0016] An embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the above-mentioned formation occurrence calculation method is implemented.

[0017] An embodiment of the present invention further provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the above-mentioned formation occurrence calculation method is implemented.

[0018] In an embodiment of the present invention, the following are obtained by measuring a rock formation sample: the stratigraphic strike, the stratigraphic dip and the stratigraphic dip angle of the rock formation sample, wherein the rock formation sample is collected from a field outcrop; the stratigraphic strike marked on a horizontal thin slice obtained by grinding the rock formation sample is determined, and the stratigraphic dip angle marked on a vertical thin slice obtained by grinding the rock formation sample is determined; image analysis is performed on the horizontal thin slice and the vertical thin slice to respectively determine the layer interfaces of the horizontal thin slice and the vertical thin slice, and the layer interfaces of the horizontal thin slice and the vertical thin slice are respectively marked to obtain the marked stratigraphic occurrence; according to the marks on the horizontal thin slice and the vertical thin slice, the stratigraphic strike and the field dip angle are respectively compared with the marked stratigraphic occurrence, and the true stratigraphic strike, the true stratigraphic dip and the true stratigraphic dip angle are calculated according to the comparison results and the stratigraphic dip. In this way, it is more realistic and reliable to identify the stratigraphic interface based on field outcrops, and it is more accurate to observe the stratigraphic interface on thin sections. Sedimentary interfaces at the centimeter level or even the millimeter level can be clearly identified, and the calculated layer interface occurrence information is very close to the actual state. The stratigraphic occurrence can be calculated quickly, efficiently and accurately through the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0020] Figure 1 A flow chart of a formation occurrence calculation method provided in an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of comparative calculation of stratum occurrence charts provided in an embodiment of the present invention;

[0022] Figure 3 It is a schematic diagram of the implementation of the formation occurrence calculation method provided in an embodiment of the present invention;

[0023] Figure 4 It is a schematic diagram of a formation occurrence calculation device provided in an embodiment of the present invention;

[0024] Figure 5 It is a structural block diagram of an electronic device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0025] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0026] The term "and / or" herein only describes an association relationship, indicating that three relationships may exist. For example, A and / or B may represent the following three situations: A exists alone, A and B exist at the same time, and B exists alone. In addition, the term "at least one" herein represents any combination of at least two of any one or more of a plurality of. For example, including at least one of A, B, and C may represent including any one or more elements selected from the set consisting of A, B, and C.

[0027] In the description of this specification, the terms "include", "including", "have", "contain", etc. are all open terms, which mean including but not limited to. The descriptions with reference to the terms "one embodiment", "a specific embodiment", "some embodiments", "for example", etc. mean that the specific features, structures or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. The order of steps involved in each embodiment is used to schematically illustrate the implementation of the present application, and the order of steps is not limited and can be appropriately adjusted as needed.

[0028] The embodiment of the present invention provides a method for calculating formation occurrence, such as Figure 1 As shown, including:

[0029] Step 101: obtaining the following measured results of a rock formation sample: the stratigraphic strike, stratigraphic dip and stratigraphic inclination of the rock formation sample, wherein the rock formation sample is collected from a field outcrop;

[0030] Step 102: determining the stratigraphic strike marked on the horizontal slice obtained by grinding the rock sample, and determining the stratigraphic dip marked on the vertical slice obtained by grinding the rock sample;

[0031] Step 103: performing image analysis on the horizontal slices and the vertical slices, respectively determining the layer interfaces of the horizontal slices and the vertical slices, respectively marking the layer interfaces of the horizontal slices and the vertical slices, and obtaining the marked stratum occurrence;

[0032] Step 104: According to the marks on the horizontal slices and the vertical slices, the formation strike and the field dip are compared with the marked formation occurrence, and the true formation strike, true formation dip and true formation dip are calculated according to the comparison results and the formation dip.

[0033] The formation strike calculation method proposed in the embodiment of the present invention is of great significance for the study of reservoir formation conditions, etc., in the restoration of ancient structures and determination of ancient formation strikes for oil and gas basins with multiple tectonic movement cycles. In view of the current status of research on formation interface identification and strike determination methods in the geological field, it effectively solves the following problems: 1. the formation interface cannot be directly observed in the field measurement method, the formation changes caused by structural deformation cannot truly reflect the original formation strike, and the result has low accuracy and large errors; 2. it effectively avoids the problem that the logging curve cannot effectively identify the formation interface in formations with strong rock heterogeneity, secondary sutures, cracks and caves; 3. it is difficult to find the sedimentary sequence interface in thick block formations in the field measurement method, and it cannot be directly observed and measured, which affects the understanding of the formation structure and the identification of deformation intensity.

[0034] During the specific implementation, the stratigraphic occurrence characteristics of the field outcrops are observed, the strike, dip and inclination of the rock formations are measured and samples are taken according to the actual situation, and the rock formation occurrence elements of the samples (field strike α1, field dip β1 and field inclination γ1) are preliminarily obtained.

[0035] In one embodiment, the horizontal slice is obtained by grinding the rock formation sample in a horizontal direction perpendicular to the rock formation sample collection plane;

[0036] Vertical thin sections are obtained by grinding rock samples in a direction perpendicular to the plane on which the rock samples were collected.

[0037] In specific implementation, the vertical field sampling interface is respectively oriented along the horizontal and vertical samples, the direction of the field strike α1 is marked on the horizontal slice, and the direction of the field inclination angle γ1 is marked on the vertical slice.

[0038] In one embodiment, performing image analysis on the horizontal slices and the vertical slices to determine the layer interfaces of the horizontal slices and the vertical slices respectively includes:

[0039] Obtain images of horizontal and vertical slices under a microscope;

[0040] According to the images under the microscope, the bedding properties of horizontal and vertical thin sections are analyzed, and the layer interfaces of horizontal and vertical thin sections are determined respectively.

[0041] In the specific implementation, observation is carried out under a microscope, and the rock layer interface is analyzed according to the microscopic characteristics of the horizontal and vertical thin sections. For example, the bedding properties can be analyzed in detail according to the particle size and arrangement of the minerals, and the layer interface can be identified. After the layer interface is determined, it is marked to obtain the actual occurrence (the rock layer strike α2 is marked on the horizontal thin section, and the projection β' of the dip on the layer interface is marked on the vertical thin section, see Figure 2 ).

[0042] In one embodiment, the field strike, field dip and marked stratum occurrence are compared based on the marks on the horizontal slice and the vertical slice, respectively, including:

[0043] Compare the stratigraphic trends on the horizontal slices placed on the protractor plate with the layer interfaces on the horizontal slices;

[0044] Compare the stratum dip angles on the vertical slice placed on the angle measuring plate with the layer interfaces on the horizontal slice.

[0045] In the specific implementation, the thin slices are placed at the appropriate position in the angle measuring plate according to the relationship between the field strike α1 and the field dip angle γ1 marked on the thin slices in two directions and the layer interface marked in step S3. The true strike (α2, β') obtained by using the layer interface on the horizontal thin slice and the vertical thin slice is compared with the original marked field strike (α1, β1). After judging whether they are in the same direction or opposite direction, the appropriate formula is selected to calculate the true strike (α), true dip (β) and true dip (γ) of the formation (see Figure 2 ):

[0046] The calculation formula of the true direction of the formation is:

[0047] α=α2

[0048] Where α is the true strike of the formation, and α2 is the strike obtained from the reading of the layer interface marked on the horizontal thin section on the angle chart.

[0049] The calculation formula of the true dip of the formation is:

[0050] β=α+90° or β=α-90°+360.

[0051] Where α is the true strike of the formation and β is the true dip of the formation.

[0052] The calculation formula of the true dip angle of the formation is:

[0053] γ=β'-90° or γ=270°-β'

[0054] Where β' is the projection of the dip marked on the vertical slice on the layer interface, and γ is the true dip of the formation.

[0055] In one embodiment, the formation occurrence calculation method further includes:

[0056] For field outcrop samples collected multiple times, the method of claim 1 is repeatedly executed to calculate the corresponding true stratigraphic trend, true stratigraphic dip and true stratigraphic dip until a preset number of times is reached;

[0057] The tectonic movement information of the field outcrops is obtained, and the true stratigraphic occurrence is determined based on the results of multiple calculations and the tectonic movement information of the field outcrops.

[0058] In specific implementation, the formation dip is calculated through multi-point sampling, and the formation dip is comprehensively determined by combining geological information such as tectonic movement.

[0059] Furthermore, the aforementioned directional samples include field directional samples, but are not limited to field samples, and include all samples that can preliminarily determine the occurrence information, such as cores whose occurrence information can be preliminarily determined through dip logging and resistivity imaging logging.

[0060] For example, in this embodiment, the preliminary occurrence of the field outcrop is first determined, and the field strike α1, field inclination β1 and field dip angle γ1 of the sample are preliminarily measured, where α1 is 5°, β1 is 95°, and γ1 is 25°;

[0061] Based on the field samples, slices were ground along the horizontal and vertical sample orientations, with the horizontal slices marked with the direction of the field strike α1, and the vertical slices marked with the direction of the field dip angle γ1;

[0062] Based on the microscopic thin sections in two directions, the layer interfaces of the horizontal thin sections and the vertical thin sections were determined and marked respectively by image analysis under a microscope.

[0063] Based on the relationship between the marked field strike α1, field dip γ1 and the real layer interface, the thin slices in two directions are placed at the appropriate position on the angle measuring plate, the strike of the marked layer interface is read on the plate, and the real strike and dip of the formation are calculated according to the relationship formula between the marked strike and the real strike;

[0064] The formation dip is calculated by multi-point sampling and combined with geological information such as tectonic movement to comprehensively determine the formation dip. α is 353°, β is 83°, and γ is 30°. Figure 3 shown.

[0065] The present invention also provides a formation occurrence calculation device, as described in the following embodiments. Since the principle of solving the problem by the device is similar to that of the formation occurrence calculation method, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be repeated.

[0066] Figure 4 FIG. 1 is a schematic diagram of a formation occurrence calculation device provided in an embodiment of the present invention. Figure 4 As shown, the device comprises:

[0067] The acquisition and measurement module 401 is used to obtain the following measured results of the rock formation samples: the formation strike, formation dip and formation dip of the rock formation samples, wherein the rock formation samples are collected from outcrops in the field;

[0068] The marking module 402 is used to determine the stratigraphic strike marked on the horizontal slice obtained by grinding the rock sample, and determine the stratigraphic dip marked on the vertical slice obtained by grinding the rock sample;

[0069] The analysis module 403 is used to perform image analysis on the horizontal slice and the vertical slice, respectively determine the layer interfaces of the horizontal slice and the vertical slice, respectively mark the layer interfaces of the horizontal slice and the vertical slice, and obtain the marked stratum occurrence;

[0070] The calculation module 404 is used to compare the formation strike, field dip and marked formation occurrence according to the marks on the horizontal slices and vertical slices, and calculate the true formation strike, true formation dip and true formation dip according to the comparison results and the formation dip.

[0071] In one embodiment, the horizontal slice is obtained by grinding the rock formation sample in a horizontal direction perpendicular to the rock formation sample collection plane;

[0072] Vertical thin sections are obtained by grinding rock samples in a direction perpendicular to the plane on which the rock samples were collected.

[0073] In one embodiment, the analysis module 403 is specifically used for:

[0074] Obtain images of horizontal and vertical slices under a microscope;

[0075] According to the images under the microscope, the bedding properties of horizontal and vertical thin sections are analyzed, and the layer interfaces of horizontal and vertical thin sections are determined respectively.

[0076] In one embodiment, the analysis module 403 is specifically used for:

[0077] Compare the stratigraphic trends on the horizontal slices placed on the protractor plate with the layer interfaces on the horizontal slices;

[0078] Compare the stratum dip angles on the vertical slice placed on the angle measuring plate with the layer interfaces on the horizontal slice.

[0079] In one embodiment, it further includes a repeat confirmation module, which is specifically used to:

[0080] The field outcrop samples collected multiple times are repeatedly processed according to the formation occurrence calculation device to calculate the corresponding true formation trend, true formation dip and true formation dip until the preset number of times is reached;

[0081] The tectonic movement information of the field outcrops is obtained, and the true stratigraphic occurrence is determined based on the results of multiple calculations and the tectonic movement information of the field outcrops.

[0082] Based on the above invention concept, Figure 5As shown, the present invention also proposes a computer device 500, including a memory 510, a processor 520, and a computer program 530 stored in the memory 510 and executable on the processor 520, wherein the processor 520 implements the aforementioned formation occurrence calculation method when executing the computer program 530.

[0083] An embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the above-mentioned formation occurrence calculation method is implemented.

[0084] An embodiment of the present invention further provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the above-mentioned formation occurrence calculation method is implemented.

[0085] To summarize, in an embodiment of the present invention, the following are obtained by measuring a rock formation sample: the stratigraphic strike, the stratigraphic dip and the stratigraphic dip of the rock formation sample, wherein the rock formation sample is collected from a field outcrop; the stratigraphic strike marked on a horizontal thin slice obtained by grinding the rock formation sample is determined, and the stratigraphic dip marked on a vertical thin slice obtained by grinding the rock formation sample is determined; image analysis is performed on the horizontal thin slices and the vertical thin slices to respectively determine the layer interfaces of the horizontal thin slices and the vertical thin slices, and the layer interfaces of the horizontal thin slices and the vertical thin slices are respectively marked to obtain the marked stratigraphic occurrence; according to the marks on the horizontal thin slices and the vertical thin slices, the stratigraphic strike and the field dip are respectively compared with the marked stratigraphic occurrence, and the true stratigraphic strike, the true stratigraphic dip and the true stratigraphic dip are calculated according to the comparison results and the stratigraphic dip. In this way, it is more realistic and reliable to identify the stratigraphic interface based on field outcrops, and it is more accurate to observe the stratigraphic interface on thin sections. Sedimentary interfaces at the centimeter level or even the millimeter level can be clearly identified, and the calculated layer interface occurrence information is very close to the actual state. The stratigraphic occurrence can be calculated quickly, efficiently and accurately through the present invention.

[0086] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0087] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0088] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0089] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0090] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for calculating formation occurrence, characterized in that: include: Observe the occurrence characteristics of the strata in the field outcrops, measure the strike, dip and inclination of the strata according to the actual situation and take samples, and preliminarily obtain the following measurements of the strata samples: the field strike α1, field dip β1 and field inclination γ1 of the strata samples; Determine the field strike α1 marked on the horizontal thin slice obtained by grinding the rock sample, and determine the field inclination γ1 marked on the vertical thin slice obtained by grinding the rock sample, wherein the horizontal thin slice is obtained by grinding the rock sample in a horizontal direction perpendicular to the rock sample collection plane, and the vertical thin slice is obtained by grinding the rock sample in a vertical direction perpendicular to the rock sample collection plane; Perform image analysis on the horizontal slices and the vertical slices, determine the layer interfaces of the horizontal slices and the vertical slices respectively, mark the layer interfaces of the horizontal slices and the vertical slices respectively, and obtain the marked stratum strike. Specifically, obtain the images of the horizontal slices and the vertical slices under a microscope; analyze the bedding properties of the horizontal slices and the vertical slices according to the images under the microscope, determine the layer interfaces of the horizontal slices and the vertical slices respectively, and after determining the layer interfaces, mark them to obtain the marked stratum strike, i.e., mark the rock formation strike α2 on the horizontal slice, and mark the projection β' of the dip on the layer interface on the vertical slice; According to the marks on the horizontal slices and the vertical slices, the field strike and the field dip are respectively compared with the marked stratum strike, wherein the comparison step comprises: comparing the field strike on the horizontal slice placed in the angle measuring plate with the layer interface of the horizontal slice; comparing the field dip on the vertical slice placed in the angle measuring plate with the layer interface of the horizontal slice, and comparing the real strike (α2, β') obtained by using the layer interface on the horizontal slice and the vertical slice with the originally marked field strike (α1, γ1); The true stratigraphic strike, true stratigraphic dip and true stratigraphic dip angle are calculated based on the comparison results and the field dip angle. The specific calculation formula is: The calculation formula for the true stratigraphic strike is: α = α2, where α is the true stratigraphic strike, and α2 is the strike obtained from the reading of the layer interface marked on the horizontal slice on the angle measuring plate; The calculation formula of the true dip of the formation is: β = α + 90° or β = α - 90° + 360°, where α is the true strike of the formation and β is the true dip of the formation; The calculation formula for the true dip of the formation is: γ = β'-90° or γ = 270°-β', where β' is the projection of the dip marked on the vertical thin section on the layer interface, and γ is the true dip of the formation.

2. The method according to claim 1, characterized in that Also includes: For field outcrop samples collected multiple times, the method of claim 1 is repeatedly executed to calculate the corresponding true stratigraphic trend, true stratigraphic dip and true stratigraphic dip until a preset number of times is reached; The tectonic movement information of the field outcrops is obtained, and the true stratigraphic occurrence is determined based on the results of multiple calculations and the tectonic movement information of the field outcrops.

3. A formation occurrence calculation device, characterized in that: include The acquisition and measurement module is used to observe the occurrence characteristics of the strata of the field outcrops, measure the strike, dip and inclination of the rock formation according to the actual situation and take samples, and preliminarily obtain the following measured results of the rock formation samples: the field strike α1, field dip β1 and field inclination γ1 of the rock formation samples; A marking module, used to determine the field strike α1 marked on the horizontal slice obtained by grinding the rock sample, and determine the field inclination γ1 marked on the vertical slice obtained by grinding the rock sample, wherein the horizontal slice is obtained by grinding the rock sample in a horizontal direction perpendicular to the rock sample collection plane, and the vertical slice is obtained by grinding the rock sample in a vertical direction perpendicular to the rock sample collection plane; The analysis module is used to perform image analysis on the horizontal slice and the vertical slice, respectively determine the layer interfaces of the horizontal slice and the vertical slice, respectively mark the layer interfaces of the horizontal slice and the vertical slice, and obtain the marked stratum strike. Specifically, the images of the horizontal slice and the vertical slice under a microscope are obtained; according to the images under the microscope, the bedding properties of the horizontal slice and the vertical slice are analyzed, and the layer interfaces of the horizontal slice and the vertical slice are respectively determined. After the layer interfaces are determined, they are marked to obtain the marked stratum strike, that is, the rock formation strike α2 is marked on the horizontal slice, and the projection β' of the dip on the layer interface is marked on the vertical slice; A calculation module is used to compare the field strike and the field dip with the marked stratum strike according to the marks on the horizontal slice and the vertical slice, wherein the comparison step comprises: comparing the field strike on the horizontal slice placed in the angle measuring plate with the layer interface of the horizontal slice; comparing the field dip on the vertical slice placed in the angle measuring plate with the layer interface of the horizontal slice, and comparing the real strike (α2, β') obtained by using the layer interface on the horizontal slice and the vertical slice with the originally marked field strike (α1, γ1); The true stratigraphic strike, true stratigraphic dip and true stratigraphic dip angle are calculated based on the comparison results and the field dip angle. The specific calculation formula is: The calculation formula for the true stratigraphic strike is: α = α2, where α is the true stratigraphic strike, and α2 is the strike obtained from the reading of the layer interface marked on the horizontal slice on the angle measuring plate; The calculation formula of the true dip of the formation is: β = α + 90° or β = α - 90° + 360°, where α is the true strike of the formation and β is the true dip of the formation; The calculation formula for the true dip of the formation is: γ = β'-90° or γ = 270°-β', where β' is the projection of the dip marked on the vertical thin section on the layer interface, and γ is the true dip of the formation.

4. The device according to claim 3, characterized in that It also includes a repeat confirmation module, which is specifically used for: The field outcrop samples collected multiple times are repeatedly processed by the device according to claim 3 to calculate the corresponding true stratigraphic trend, true stratigraphic inclination and true stratigraphic dip until a preset number of times is reached; The tectonic movement information of the field outcrops is obtained, and the true stratigraphic occurrence is determined based on the results of multiple calculations and the tectonic movement information of the field outcrops.

5. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 2 is implemented.

6. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 2 is implemented.

7. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 2 is implemented.

Images