Method and device for recovering ancient sedimentary environment, electronic equipment and storage medium

Abstract

The invention discloses a method and device for recovering an ancient sedimentary environment, electronic equipment and a storage medium. The method comprises the following steps: acquiring rock slice experimental data of a target interval of a research area; classifying the rock slice experimental data according to a predetermined classification condition of the salinized lake carbonate rock particles to obtain data of different types of carbonate rock particles; determining the volume content of different types of carbonate rock particles; according to the volume contents of different types of carbonate rock particles, constructing an ancient sedimentary environment discrimination indication factor; determining a paleo-sedimentary environment classification function and a paleo-water depth according to the paleo-sedimentary environment discrimination indication factor; and according to the paleo-sedimentary environment classification function and the paleo-water depth, constructing a paleo-sedimentary environment and paleo-water depth plane graph, and according to the paleo-sedimentary environment and the paleo-water depth plane graph, carrying out reservoir evaluation to recover the paleo-sedimentary environment According to the technical scheme, quantitative, accurate and reliable basis is provided for dividing the paleo-sedimentary environment of the salinized lake and determining the paleo-water depth, and research on recovery of the paleo-sedimentary environment is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of oil and gas exploration, and in particular to a method, a device, an electronic device and a storage medium for restoring an ancient sedimentary environment. Background Art

[0002] Restoration of the ancient lake sedimentary environment is an important research topic in sedimentary reservoir science, and is of great significance for studying the lake sedimentary history and evaluating favorable phase zones and regional caprocks.

[0003] The existing methods for restoring ancient sedimentary environments and ancient water depths often have uncertainties. Many methods for restoring biological fossils, trace elements, geochemical parameters, etc. are uncertain. For example, the analysis of ancient biological communities and geochemistry is affected by the climate and salinity of the water body at that time, which leads to misunderstandings in environmental discrimination. The analysis of trace elements is greatly affected by the migration of formation water and the mineral composition of early formations, which leads to inaccurate environmental discrimination results. In terms of ancient water depth restoration, it has long been based on biological markers with water depth significance, such as calcareous algae, benthic foraminifera and planktonic foraminifera, coral communities, ostracods and coccoliths, or authigenic minerals and geochemical characteristics that can represent water depth. However, this method has a high dependence on physical samples in the field outcrop area, making it difficult to carry out relatively continuous restoration of oil and gas basins, and cannot be used for the restoration of large-scale formations and large-area ancient sedimentary environments and ancient water depths in the study area. Summary of the invention

[0004] The present invention provides a method, device, electronic device and storage medium for restoring an ancient sedimentary environment. The ancient sedimentary environment and ancient water depth are determined based on the characteristics of carbonate rock particles in saline lakes, providing a quantitative, accurate and reliable basis for dividing the ancient sedimentary environment of saline lakes and determining the ancient water depth, which is conducive to the study of ancient sedimentary environment restoration.

[0005] According to one aspect of the present invention, there is provided a method for restoring an ancient sedimentary environment, the method comprising:

[0006] Obtain rock thin section experimental data of the target layer in the study area;

[0007] According to the predetermined classification of carbonate rock particles in saline lakes, the rock thin section experimental data are classified to obtain data of different types of carbonate rock particles;

[0008] determining the volume content of the different types of carbonate particles;

[0009] According to the volume content of the different types of carbonate rock particles, constructing an indicator factor for distinguishing the ancient sedimentary environment;

[0010] According to the paleo-sedimentary environment identification indicator factors, the paleo-sedimentary environment classification function and the paleo-water depth are determined;

[0011] According to the paleo-sedimentary environment classification function and paleo-water depth, a paleo-sedimentary environment and paleo-water depth plane map is constructed, and a reservoir evaluation is carried out according to the paleo-sedimentary environment and paleo-water depth plane map to restore the paleo-sedimentary environment.

[0012] According to another aspect of the present invention, there is provided a device for restoring an ancient sedimentary environment, the device comprising:

[0013] The rock thin section experimental data acquisition module is used to obtain the rock thin section experimental data of the target layer in the study area;

[0014] A module for obtaining data of different types of carbonate rock particles, which is used to classify the rock thin section experimental data according to the predetermined classification of carbonate rock particles in saline lakes, and obtain data of different types of carbonate rock particles;

[0015] A volume content determination module, used to determine the volume content of the different types of carbonate rock particles;

[0016] A paleo-sedimentary environment discrimination indicator factor construction module is used to construct a paleo-sedimentary environment discrimination indicator factor according to the volume content of the different types of carbonate rock particles;

[0017] A paleo-sedimentary environment classification function and paleo-water depth determination module, used to determine the paleo-sedimentary environment classification function and paleo-water depth according to the paleo-sedimentary environment discrimination indicator factor;

[0018] The paleo-sedimentary environment and paleo-water depth plane map construction module is used to construct the paleo-sedimentary environment and paleo-water depth plane map according to the paleo-sedimentary environment classification function and the paleo-water depth, and to carry out reservoir evaluation according to the paleo-sedimentary environment and paleo-water depth plane map to restore the paleo-sedimentary environment.

[0019] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0020] at least one processor; and

[0021] a memory communicatively connected to the at least one processor; wherein,

[0022] The memory stores a computer program that can be executed by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute a method for restoring an ancient sedimentary environment as described in any embodiment of the present invention.

[0023] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement a method for restoring an ancient sedimentary environment as described in any embodiment of the present invention when executed.

[0024] The technical solution of the embodiment of the present invention obtains rock thin section experimental data of the target layer section in the study area; classifies the rock thin section experimental data according to the predetermined classification of carbonate rock particles in the saline lake to obtain data of different types of carbonate rock particles; determines the volume content of different types of carbonate rock particles; constructs the paleo-sedimentary environment discrimination indicator factor according to the volume content of different types of carbonate rock particles; determines the paleo-sedimentary environment classification function and paleo-water depth according to the paleo-sedimentary environment discrimination indicator factor; constructs the paleo-sedimentary environment and paleo-water depth plane map according to the paleo-sedimentary environment classification function and paleo-water depth, and conducts reservoir evaluation according to the paleo-sedimentary environment and paleo-water depth plane map to restore the paleo-sedimentary environment. This technical solution provides a quantitative, accurate and reliable basis for dividing the paleo-sedimentary environment of saline lakes and determining the paleo-water depth, which is conducive to the study of paleo-sedimentary environment restoration.

[0025] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. 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.

[0027] Figure 1 is a flow chart of a method for restoring an ancient sedimentary environment provided according to Embodiment 1 of the present invention;

[0028] Figure 2 is a schematic diagram of different types of carbonate rock particles provided in Example 1 of the present application;

[0029] Figure 3 This is a diagram for distinguishing the relationship between the ancient sedimentary environment and the ancient water depth provided in Example 1 of the present application;

[0030] Figure 4 This is the ancient sedimentary environment and ancient water depth discrimination model diagram provided in Example 1 of the present application;

[0031] Figure 5 A schematic diagram of the structure of a device for restoring an ancient sedimentary environment provided in Embodiment 2 of the present invention;

[0032] Figure 6 It is a schematic diagram of the structure of an electronic device for implementing a method for restoring an ancient sedimentary environment according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] Embodiment 1

[0036] Figure 1 This is a flow chart of a method for restoring an ancient sedimentary environment according to the first embodiment of the present invention. This embodiment is applicable to the situation where the sedimentary environment of a saline lake and the ancient water depth are distinguished to restore the ancient sedimentary environment. The method can be executed by a device for restoring the ancient sedimentary environment. The device for restoring the ancient sedimentary environment can be implemented in the form of hardware and / or software. The device for restoring the ancient sedimentary environment can be configured in an electronic device. Figure 1 As shown, the method includes:

[0037] S110. Obtain rock thin section experimental data of the target layer in the study area.

[0038] In this scheme, the study area may refer to an oil and gas exploration area, for example, the study area may be a basin. The target layer section may refer to a layer section in the oil and gas exploration area. For example, the target layer section may be the Neogene Oil Sand Mountain Formation.

[0039] Among them, rock thin section experimental data can refer to collecting samples from outcrops or cores, making thin sections, and observing and analyzing the microscopic characteristics of rocks under a microscope.

[0040] In this embodiment, the rock thin section experimental data such as cores and outcrops of the target layer section in the study area can be observed and collected based on the system acquisition.

[0041] S120, classifying the rock thin section experimental data according to the predetermined classification of carbonate rock particles in saline lakes to obtain data of different types of carbonate rock particles.

[0042] In this scheme, carbonate particles are common in lake sedimentary strata, especially in lake carbonate rocks. They are classified and named according to their external morphology and internal structure. Common ones include oncoliths, oolites and grape stones, quasi-spherules, clotted spherules, fecal spherules, and debris spherules such as charophytes. In addition, carbonate particles are classified according to their morphology and structure, and are divided into five types: spherules, oolites, oncoliths, cortisols, and aggregates. Their structural differences and genetic mechanisms are discussed respectively, and it is proposed that the formation of various types of particles is genetically related to bacteria and their EPS (Expanded Polystyrene). Carbonate particles are also common in microbial rocks, especially clotted rocks, and form the structural components of microbial rocks, as well as quasi-spherules. Carbonate particles are usually embedded in the matrix of micrite carbonate to form granular carbonate rocks. Granular carbonate rocks and microbial rocks are formed in specific sedimentary environments. For the above-mentioned particle classification, four types are common in saline lakes, mainly including spherulites (including quasi-spherulites), aggregate particles (including clotted spherulites), oolitics (including cortisols), and oncoliths. The combination and content of these particles and related types of particles are uniquely sensitive to water depth, salinity, terrigenous debris input, etc., especially in saline lakes, they have the significance of indicating specific sedimentary environment and ancient water depth.

[0043] In this embodiment, the rock thin section experimental data can be used to classify carbonate rock particles commonly found in saline lakes into four categories: oolites, oncoliths, spherules, and aggregate particles.

[0044] In this program, Figure 2 is a schematic diagram of different types of carbonate rock particles provided in Example 1 of the present application, Figure 2 (a) is a thin section image of oolite; Figure 2 (b) is a rock thin section image of oncolith; Figure 2 (c) is a rock thin section image of chondrules; Figure 2 (d) in the figure is a rock thin section image of aggregate particles.

[0045] S130: Determine the volume content of the different types of carbonate rock particles.

[0046] The volume content of carbonate particles is expressed as a percentage.

[0047] In this scheme, the classification results of different types of carbonate rock particles can be used to count the volume content of different types of carbonate rock particles in the target layer section of the study area. The volume content of different types of carbonate rock particles is shown in Table 1. Among them, there are multiple carbonate rock particles in the target layer section.

[0048] Table 1

[0049] S140. Constructing an indicator factor for distinguishing an ancient sedimentary environment according to the volume content of the different types of carbonate rock particles.

[0050] In this scheme, the type of carbonate rock particles and their volume content can be used to construct the indicator factor for distinguishing the ancient sedimentary environment. Specifically, the volume content of different types of carbonate rock particles can be combined and calculated to construct the indicator factor for distinguishing the ancient sedimentary environment. Among them, the indicator factor for distinguishing the ancient sedimentary environment is dimensionless.

[0051] Optionally, the different types of carbonate rock particles include oolites, oncoliths, spherules and aggregate particles;

[0052] Accordingly, according to the volume content of the different types of carbonate rock particles, the paleo-sedimentary environment discrimination indicator factors are constructed, including:

[0053] The following formula is used to calculate the indicator factor for distinguishing the paleo-sedimentary environment;

[0054]

[0055] Among them, V represents the indicator factor for distinguishing the paleo-sedimentary environment, V oo represents the volume content of ooids, V on Indicates the volume content of oncoliths, V s Indicates the volume content of the pellet, V p Indicates the volume content of polymer particles.

[0056] In this scheme, the volume content of oolites and the volume content of oncoliths can be added to obtain a first result, and the volume content of spherules and the volume content of aggregate particles can be added to obtain a second result, and the first result and the second result can be divided to obtain an indicator factor for distinguishing an ancient sedimentary environment.

[0057] By constructing the ancient sedimentary environment discrimination indicator factors, the ancient sedimentary environment and ancient water depth can be determined based on the ancient sedimentary environment discrimination indicator factors, which provides a quantitative, accurate and reliable basis for dividing the ancient sedimentary environment of saline lakes and determining the ancient water depth, and is conducive to the study of ancient sedimentary environment restoration.

[0058] S150, determining the ancient sedimentary environment classification function and the ancient water depth according to the ancient sedimentary environment discrimination indicator factor.

[0059] Among them, a sedimentary environment is a piece of the earth's surface that is physically, chemically and biologically different from adjacent areas. A paleoenvironment is a geographical unit that existed at a certain period in geological history. The object of sedimentology is sedimentary rocks, which are the product of ancient sedimentary environments. Ancient sedimentary environments and paleogeographic features can no longer be directly observed, and can only be analyzed and restored through information preserved in the strata.

[0060] In this scheme, paleowater depth refers to the difference in elevation between the top surface of the sediment and the sea level sedimentary datum, reflecting the size of the sedimentary accommodation space.

[0061] In this embodiment, the paleo-sedimentary environment discrimination indicator factor may be compared with a predetermined threshold range to determine the paleo-sedimentary environment classification function and the paleo-water depth.

[0062] Optionally, determining a paleo-sedimentary environment classification function according to the paleo-sedimentary environment discrimination indicator factor includes:

[0063] The paleo-sedimentary environment discrimination indicator factor is compared with a predetermined paleo-sedimentary environment classification range to determine a paleo-sedimentary environment classification function; wherein the paleo-sedimentary environment classification function includes a basin-margin shore sand-rich area, a basin-margin shore sand-poor area, a basin-inner slope sand-poor area, a basin-inner shallow lake area, and a basin-inner semi-deep lake area.

[0064] In this embodiment, the reservoir mainly includes two categories: mud-crystal carbonate rock and microbial carbonate rock. The ancient sedimentary environment of the lacustrine carbonate rock can be divided into the basin margin shore sand-rich area, the basin margin shore sand-poor area, the basin slope sand-poor area, the basin shallow lake area and the basin semi-deep lake area.

[0065] Among them, the paleo-sedimentary environment classification range can be set according to the requirements of the paleo-sedimentary environment classification function.

[0066] By determining the classification function of the ancient sedimentary environment, a quantitative, accurate and reliable basis is provided for the division of the ancient sedimentary environment of saline lakes, which is beneficial to the study of ancient sedimentary environment restoration.

[0067] Optionally, comparing the paleo-sedimentary environment identification indicator factor with a predetermined paleo-sedimentary environment classification range to determine a paleo-sedimentary environment classification function includes:

[0068] When the paleo-sedimentary environment discrimination indicator factor is within the predetermined first paleo-sedimentary environment classification range, the paleo-sedimentary environment classification function is determined to be a basin margin shore sand-rich area;

[0069] When the paleo-sedimentary environment discrimination indicator factor is within the predetermined second paleo-sedimentary environment classification range, the paleo-sedimentary environment classification function is determined to be a basin margin shore poor sand area;

[0070] When the paleo-sedimentary environment discrimination indicator factor is within the predetermined third paleo-sedimentary environment classification range, the paleo-sedimentary environment classification function is determined to be a sand-poor area on the slope within the basin;

[0071] When the paleo-sedimentary environment discrimination indicator factor is within the predetermined fourth paleo-sedimentary environment classification range, the paleo-sedimentary environment classification function is determined to be a shallow lake area within a basin.

[0072] Specifically, the first ancient sedimentary environment classification range is greater than 2; the second ancient sedimentary environment classification range is less than 2 and greater than 1; the third ancient sedimentary environment classification range is less than 1 and greater than 0.5; the fourth ancient sedimentary environment classification range is less than 0.5 and greater than 0.

[0073] In this scheme, when the ancient sedimentary environment discrimination indicator factor is greater than 2, the ancient sedimentary environment classification function is determined to be a basin-margin coastal sand-rich area; when the ancient sedimentary environment discrimination indicator factor is less than 2 and greater than 1, the ancient sedimentary environment classification function is determined to be a basin-margin coastal sand-poor area; when the ancient sedimentary environment discrimination indicator factor is less than 1 and greater than 0.5, the ancient sedimentary environment classification function is determined to be a basin-inner slope sand-poor area; when the ancient sedimentary environment discrimination indicator factor is less than 0.5 and greater than 0, the ancient sedimentary environment classification function is determined to be a basin-inner shallow lake area.

[0074] Optionally, comparing the paleo-sedimentary environment identification indicator factor with a predetermined paleo-sedimentary environment classification range to determine a paleo-sedimentary environment classification function further includes:

[0075] When the ancient sedimentary environment discrimination indicator factor is within the predetermined fourth ancient sedimentary environment classification range, and the volume content of spherules and the volume content of aggregate particles meet the preset threshold constraint conditions, the ancient sedimentary environment classification function is determined to be a semi-deep lake area in the basin.

[0076] In this embodiment, the threshold constraint is 5%. When the sum of the volume content of the spherical particles and the volume content of the polymer particles is less than 5%, the preset threshold constraint is met; when the sum of the volume content of the spherical particles and the volume content of the polymer particles is not less than 5%, the preset threshold constraint is not met.

[0077] In this scheme, when the ancient sedimentary environment discrimination indicator factor is less than 0.5 and greater than 0, and the sum of the volume content of spherules and aggregates is less than 5%, the ancient sedimentary environment classification function is determined to be a semi-deep lake area in the basin.

[0078] Specifically, the paleo-sedimentary environment classification function is:

[0079]

[0080] Among them, Sendiment represents the ancient sedimentary environment classification function.

[0081] By determining the classification function of the ancient sedimentary environment, a quantitative, accurate and reliable basis is provided for the division of the ancient sedimentary environment of saline lakes, which is beneficial to the study of ancient sedimentary environment restoration.

[0082] Optionally, determining the ancient water depth according to the ancient sedimentary environment identification indicator factor includes:

[0083] The paleo-sedimentary environment identification indicator factor is compared with a predetermined paleo-water depth range to determine the paleo-water depth.

[0084] Among them, the paleo-water depth range can be set according to the requirements of paleo-water depth division.

[0085] In this scheme, the paleo-depositional environment discrimination indicator factor and the predetermined paleo-water depth range can be used to determine the paleo-water depth according to the paleo-water depth range in which the paleo-depositional environment discrimination indicator factor is located.

[0086] By determining the range of paleo-water depth, a quantitative, accurate and reliable basis is provided for determining paleo-water depth, which is beneficial to the study of paleo-water depth restoration.

[0087] Optionally, comparing the paleo-sedimentary environment identification indicator factor with a predetermined paleo-water depth range to determine the paleo-water depth includes:

[0088] When the paleo-sedimentary environment discrimination indicator factor is within the predetermined first paleo-water depth range, the paleo-water depth is determined to be the first water depth;

[0089] When the paleo-sedimentary environment discrimination indicator factor is within the predetermined second paleo-water depth range, the paleo-water depth is determined to be the second water depth;

[0090] When the paleo-sedimentary environment discrimination indicator factor is within the predetermined third paleo-water depth range, the paleo-water depth is determined to be the third paleo-water depth;

[0091] Among them, the first water depth is less than 1 meter; the second water depth is greater than 1 meter and less than 3 meters; and the third water depth is greater than 3 meters.

[0092] In this embodiment, the first paleo-water depth range is greater than 0.5; the second paleo-water depth range is less than 0.5 and greater than 0; and the third paleo-water depth range is equal to 0.

[0093] In this scheme, when the ancient sedimentary environment discrimination indicator factor is greater than 0.5, the ancient water depth is determined to be less than 1 meter; when the ancient sedimentary environment discrimination indicator factor is less than 0.5 and greater than 0, the ancient water depth is determined to be greater than 1 meter and less than 3 meters; when the ancient sedimentary environment discrimination indicator factor is equal to 0, the ancient water depth is determined to be greater than 3 meters.

[0094] Specifically, the relationship for determining paleo-water depth is:

[0095]

[0096] By determining the range of paleo-water depth, a quantitative, accurate and reliable basis is provided for determining paleo-water depth, which is beneficial to the study of paleo-water depth restoration.

[0097] In this embodiment, Figure 3 This is a diagram for distinguishing the relationship between the ancient sedimentary environment and the ancient water depth provided in Example 1 of the present application, such as Figure 3 As shown in the figure, the paleo-sedimentary environment classification function and paleo-water depth can be discriminated according to the paleo-sedimentary environment classification range and paleo-water depth range of the paleo-sedimentary environment discriminant factor, thereby constructing a paleo-sedimentary environment and paleo-water depth discrimination relationship diagram.

[0098] S160. Construct a paleo-sedimentary environment and paleo-water depth plane map based on the paleo-sedimentary environment classification function and the paleo-water depth, and conduct reservoir evaluation based on the paleo-sedimentary environment and paleo-water depth plane map to restore the paleo-sedimentary environment.

[0099] In this embodiment, multiple data points of the target layer section in the study area are used, sorted and optimized, and the volume content of oolites, oncoliths, spherules, and aggregates is counted, and the paleoenvironment discrimination indicator factor is further calculated to determine the paleo-sedimentary environment and paleo-water depth. According to the paleo-sedimentary environment classification function and paleo-water depth, a paleo-sedimentary environment and paleo-water depth plane map is constructed, and reservoir evaluation is carried out to restore the paleo-sedimentary environment. Among them, the volume content, paleo-sedimentary environment, and paleo-water depth statistical information of different types of carbonate rock particles are shown in Table 2.

[0100] Table 2

[0101]

[0102] In this program, Figure 4 This is the ancient sedimentary environment and ancient water depth discrimination model diagram provided in Example 1 of the present application, such as Figure 4 As shown, based on the paleo-sedimentary environment classification function and paleo-water depth, a paleo-sedimentary environment and paleo-water depth plane map can be constructed, thereby conducting reservoir evaluation based on the paleo-sedimentary environment and paleo-water depth plane map.

[0103] Furthermore, this plan not only involves technical fields such as oil and gas exploration and reservoir deposition, but also particularly involves technical methods such as sedimentary paleoenvironment, paleowater depth restoration, and sedimentary phase analysis.

[0104] The technical solution of the embodiment of the present invention obtains the rock thin section experimental data of the target layer section in the study area; classifies the rock thin section experimental data according to the predetermined classification of carbonate rock particles in the saline lake to obtain data of different types of carbonate rock particles; determines the volume content of different types of carbonate rock particles; constructs the paleo-sedimentary environment discrimination indicator factor according to the volume content of different types of carbonate rock particles; determines the paleo-sedimentary environment classification function and paleo-water depth according to the paleo-sedimentary environment discrimination indicator factor; constructs the paleo-sedimentary environment and paleo-water depth plane map according to the paleo-sedimentary environment classification function and paleo-water depth, and conducts reservoir evaluation according to the paleo-sedimentary environment and paleo-water depth plane map to restore the paleo-sedimentary environment. By executing this technical solution, the paleo-sedimentary environment and paleo-water depth are quantitatively determined based on the characteristics of carbonate rock particles in the saline lake, providing a quantitative, accurate and reliable basis for dividing the paleo-sedimentary environment of the saline lake and determining the paleo-water depth, which is conducive to studying the restoration of the paleo-sedimentary environment.

[0105] Embodiment 2

[0106] Figure 5 This is a schematic diagram of the structure of a device for restoring an ancient sedimentary environment provided in Example 2 of the present invention. Figure 5 As shown, the device comprises:

[0107] The rock thin section experimental data acquisition module 510 is used to acquire the rock thin section experimental data of the target layer section in the study area;

[0108] A module 520 for obtaining data of different types of carbonate particles is used to classify the rock thin section experimental data according to the predetermined classification of carbonate particles in saline lakes, and obtain data of different types of carbonate particles;

[0109] A volume content determination module 530 is used to determine the volume content of the different types of carbonate particles;

[0110] The ancient sedimentary environment discrimination indicator factor construction module 540 is used to construct the ancient sedimentary environment discrimination indicator factor according to the volume content of the different types of carbonate rock particles;

[0111] A paleo-sedimentary environment classification function and paleo-water depth determination module 550 is used to determine the paleo-sedimentary environment classification function and paleo-water depth according to the paleo-sedimentary environment discrimination indicator factor;

[0112] The ancient sedimentary environment and ancient water depth plane map construction module 560 is used to construct the ancient sedimentary environment and ancient water depth plane map according to the ancient sedimentary environment classification function and the ancient water depth, and to carry out reservoir evaluation according to the ancient sedimentary environment and ancient water depth plane map to restore the ancient sedimentary environment.

[0113] Optionally, the different types of carbonate rock particles include oolites, oncoliths, spherules and aggregate particles;

[0114] Accordingly, the paleo-sedimentary environment discrimination indicator factor construction module 540 is specifically used for:

[0115] The following formula is used to calculate the indicator factor for distinguishing the paleo-sedimentary environment;

[0116]

[0117] Among them, V represents the indicator factor for distinguishing the paleo-sedimentary environment, V oo represents the volume content of ooids, V on Indicates the volume content of oncoliths, V s Indicates the volume content of the pellet, V p Indicates the volume content of polymer particles.

[0118] Optionally, the paleo-sedimentary environment classification function and paleo-water depth determination module 550 includes:

[0119] The paleo-sedimentary environment classification function determination submodule is used to compare the paleo-sedimentary environment discrimination indicator factor with the predetermined paleo-sedimentary environment classification range to determine the paleo-sedimentary environment classification function; wherein the paleo-sedimentary environment classification function includes the basin edge shore sand-rich area, the basin edge shore sand-poor area, the basin slope sand-poor area, the basin shallow lake area and the basin semi-deep lake area.

[0120] Optional, paleo-sedimentary environment classification function determination submodule, specifically used for:

[0121] When the paleo-sedimentary environment discrimination indicator factor is within the predetermined first paleo-sedimentary environment classification range, the paleo-sedimentary environment classification function is determined to be a basin margin shore sand-rich area;

[0122] When the paleo-sedimentary environment discrimination indicator factor is within the predetermined second paleo-sedimentary environment classification range, the paleo-sedimentary environment classification function is determined to be a basin margin shore poor sand area;

[0123] When the paleo-sedimentary environment discrimination indicator factor is within the predetermined third paleo-sedimentary environment classification range, the paleo-sedimentary environment classification function is determined to be a sand-poor area on the slope within the basin;

[0124] When the paleo-sedimentary environment discrimination indicator factor is within the predetermined fourth paleo-sedimentary environment classification range, the paleo-sedimentary environment classification function is determined to be a shallow lake area within a basin.

[0125] Optionally, the paleo-sedimentary environment classification function determination submodule is also used to:

[0126] When the ancient sedimentary environment discrimination indicator factor is within the predetermined fourth ancient sedimentary environment classification range, and the volume content of spherules and the volume content of aggregate particles meet the preset threshold constraint conditions, the ancient sedimentary environment classification function is determined to be a semi-deep lake area in the basin.

[0127] Optionally, the paleo-sedimentary environment classification function and paleo-water depth determination module 550 further includes:

[0128] The paleo-water depth determination submodule is used to compare the paleo-sedimentary environment discrimination indicator factor with a predetermined paleo-water depth range to determine the paleo-water depth.

[0129] Optional, paleo-water depth determination submodule, specifically used for:

[0130] When the paleo-sedimentary environment discrimination indicator factor is within the predetermined first paleo-water depth range, the paleo-water depth is determined to be the first water depth;

[0131] When the paleo-sedimentary environment discrimination indicator factor is within the predetermined second paleo-water depth range, the paleo-water depth is determined to be the second water depth;

[0132] When the paleo-sedimentary environment discrimination indicator factor is within the predetermined third paleo-water depth range, the paleo-water depth is determined to be the third paleo-water depth;

[0133] Among them, the first water depth is less than 1 meter; the second water depth is greater than 1 meter and less than 3 meters; and the third water depth is greater than 3 meters.

[0134] An apparatus for restoring an ancient sedimentary environment provided by an embodiment of the present invention can execute a method for restoring an ancient sedimentary environment provided by any embodiment of the present invention, and has functional modules and beneficial effects corresponding to the execution method.

[0135] Embodiment 3

[0136] Figure 6 A schematic diagram of the structure of an electronic device 10 that can be used to implement an embodiment of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0137] like Figure 6As shown, the electronic device 10 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0138] A number of components in the electronic device 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0139] The processor 11 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 performs the various methods and processes described above, such as a method for restoring an ancient sedimentary environment.

[0140] In some embodiments, a method for restoring an ancient depositional environment may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the method for restoring an ancient depositional environment described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform a method for restoring an ancient depositional environment in any other appropriate manner (e.g., by means of firmware).

[0141] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0142] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0143] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0144] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0145] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0146] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0147] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0148] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for restoring an ancient sedimentary environment, characterized in that: include: Obtain rock thin section experimental data of the target layer in the study area; According to the predetermined classification of carbonate rock particles in saline lakes, the rock thin section experimental data are classified to obtain data of different types of carbonate rock particles; determining the volume content of the different types of carbonate particles; According to the volume content of the different types of carbonate rock particles, constructing an indicator factor for distinguishing the ancient sedimentary environment; According to the paleo-sedimentary environment identification indicator factors, the paleo-sedimentary environment classification function and the paleo-water depth are determined; According to the paleo-sedimentary environment classification function and paleo-water depth, a paleo-sedimentary environment and paleo-water depth plane map is constructed, and a reservoir evaluation is carried out according to the paleo-sedimentary environment and paleo-water depth plane map to restore the paleo-sedimentary environment.

2. The method according to claim 1, characterized in that The different types of carbonate rock particles include oolites, oncoliths, spherules and aggregate particles; Accordingly, according to the volume content of the different types of carbonate rock particles, the paleo-sedimentary environment discrimination indicator factors are constructed, including: The following formula is used to calculate the indicator factor for distinguishing the paleo-sedimentary environment; Among them, V represents the indicator factor for distinguishing the paleo-sedimentary environment, V oo represents the volume content of ooids, V on Indicates the volume content of oncoliths, V s Indicates the volume content of the pellet, V p Indicates the volume content of polymer particles.

3. The method according to claim 1, characterized in that According to the paleo-sedimentary environment identification indicator factors, the paleo-sedimentary environment classification function is determined, including: The paleo-sedimentary environment discrimination indicator factor is compared with a predetermined paleo-sedimentary environment classification range to determine a paleo-sedimentary environment classification function; wherein the paleo-sedimentary environment classification function includes a basin-margin shore sand-rich area, a basin-margin shore sand-poor area, a basin-inner slope sand-poor area, a basin-inner shallow lake area, and a basin-inner semi-deep lake area.

4. The method according to claim 3, characterized in that The paleo-sedimentary environment identification indicator factor is compared with a predetermined paleo-sedimentary environment classification range to determine a paleo-sedimentary environment classification function, including: When the paleo-sedimentary environment discrimination indicator factor is within the predetermined first paleo-sedimentary environment classification range, the paleo-sedimentary environment classification function is determined to be a basin margin shore sand-rich area; When the paleo-sedimentary environment discrimination indicator factor is within the predetermined second paleo-sedimentary environment classification range, the paleo-sedimentary environment classification function is determined to be a basin margin shore poor sand area; When the paleo-sedimentary environment discrimination indicator factor is within the predetermined third paleo-sedimentary environment classification range, the paleo-sedimentary environment classification function is determined to be a basin slope poor sand area; When the paleo-sedimentary environment discrimination indicator factor is within the predetermined fourth paleo-sedimentary environment classification range, the paleo-sedimentary environment classification function is determined to be a shallow lake area within a basin.

5. The method according to claim 3, characterized in that: The paleo-sedimentary environment identification indicator factor is compared with a predetermined paleo-sedimentary environment classification range to determine a paleo-sedimentary environment classification function, and further includes: When the ancient sedimentary environment discrimination indicator factor is within the predetermined fourth ancient sedimentary environment classification range, and the volume content of spherules and the volume content of aggregate particles meet the preset threshold constraint conditions, the ancient sedimentary environment classification function is determined to be a semi-deep lake area in the basin.

6. The method according to claim 1, characterized in that According to the above-mentioned paleo-sedimentary environment identification indicator factors, the paleo-water depth is determined, including: The paleo-sedimentary environment identification indicator factor is compared with a predetermined paleo-water depth range to determine the paleo-water depth.

7. The method according to claim 6, characterized in that The paleo-sedimentary environment identification indicator factor is compared with a predetermined paleo-water depth range to determine the paleo-water depth, including: When the paleo-sedimentary environment discrimination indicator factor is within the predetermined first paleo-water depth range, the paleo-water depth is determined to be the first water depth; When the paleo-sedimentary environment discrimination indicator factor is within the predetermined second paleo-water depth range, the paleo-water depth is determined to be the second water depth; When the paleo-sedimentary environment discrimination indicator factor is within the predetermined third paleo-water depth range, the paleo-water depth is determined to be the third paleo-water depth; Among them, the first water depth is less than 1 meter; the second water depth is greater than 1 meter and less than 3 meters; and the third water depth is greater than 3 meters.

8. A device for restoring an ancient sedimentary environment, characterized in that: include: The rock thin section experimental data acquisition module is used to obtain the rock thin section experimental data of the target layer in the study area; A module for obtaining data of different types of carbonate rock particles, which is used to classify the rock thin section experimental data according to the predetermined classification of carbonate rock particles in saline lakes, and obtain data of different types of carbonate rock particles; A volume content determination module, used to determine the volume content of the different types of carbonate rock particles; A paleo-sedimentary environment discrimination indicator factor construction module is used to construct a paleo-sedimentary environment discrimination indicator factor according to the volume content of the different types of carbonate rock particles; A paleo-sedimentary environment classification function and paleo-water depth determination module, used to determine the paleo-sedimentary environment classification function and paleo-water depth according to the paleo-sedimentary environment discrimination indicator factor; The paleo-sedimentary environment and paleo-water depth plane map construction module is used to construct the paleo-sedimentary environment and paleo-water depth plane map according to the paleo-sedimentary environment classification function and the paleo-water depth, and to carry out reservoir evaluation according to the paleo-sedimentary environment and paleo-water depth plane map to restore the paleo-sedimentary environment.

9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute a method for restoring an ancient sedimentary environment as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement a method for restoring an ancient sedimentary environment according to any one of claims 1 to 7 when executed.

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