Transition phase shale deposition environment identification method and device, electronic equipment and medium

Abstract

The invention discloses a transition phase shale deposition environment identification method, device and equipment and a medium. The method comprises the following steps: determining a basin area to be measured, wherein the basin area to be measured is a basin area formed by a carboniferous-permidoid coal-bearing stratum; detecting transition phase shale in the basin area to be detected to obtain sedimentary index parameters and geochemical index parameters corresponding to the basin area to be detected; and based on the sedimentary index parameters and the geochemical index parameters corresponding to the to-be-measured basin area, determining a transition phase shale sedimentary environment classification result of the to-be-measured basin area through a preset transition phase shale sedimentary environment classification model. According to the scheme, the transition phase shale deposition environment classification result of the to-be-detected basin area is determined through the preset transition phase shale deposition environment classification model, the limitation that only a transition phase shale object in a single area is effective is solved, and the universality and accuracy of the method for identifying the deposition environment through the transition phase shale are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of shale gas exploration and development, and in particular to a method, device, electronic equipment and medium for identifying a transitional phase shale deposition environment. Background Art

[0002] Transitional shale gas resources play a vital role in national economic development. The shale revolution has profoundly changed the concept of oil and gas exploration and greatly expanded the scope of oil and gas exploration. Organic-rich shales are economically valuable because they often serve as source rocks within sedimentary rocks and are associated with the formation of various heavy metals.

[0003] Currently, research on transitional shale focuses primarily on its material source and occurrence state, with limited attention paid to identifying its depositional environment. Common identification methods include field outcrop analysis, drilling, logging, and seismic methods. However, due to the widespread distribution of sedimentary deposits, frequent interbeds, and complex accumulation in marine-continental transitional shale gas reservoirs, field outcrops have long been subject to intense diagenesis and weathering. Visual observation of the depositional environment alone can lead to significant errors. Well logging and seismic methods, which rely on data and wave reflections to identify shale depositional environments, offer some reliability but are limited. Consequently, existing identification methods yield inaccurate results and exhibit significant limitations, namely, they are only effective for transitional shale deposits in a single region and lack universal applicability. Summary of the Invention

[0004] The present invention provides a method, device, electronic equipment and medium for identifying the transitional phase shale depositional environment. The technical solution of the present invention determines the transitional phase shale depositional environment classification result of the basin area to be tested by presetting the transitional phase shale depositional environment classification model, thereby solving the limitation of being only effective for transitional phase shale objects in a single area and improving the universality and accuracy of the method for identifying the transitional phase shale depositional environment.

[0005] According to one aspect of the present invention, a method for identifying a transitional shale depositional environment is provided, which is applied to a transitional shale depositional environment identification device, wherein the transitional shale depositional environment identification device is disposed at a well site and / or a base data center. The method comprises:

[0006] Determining a basin area to be measured, wherein the basin area to be measured is a basin area composed of Carboniferous-Permian coal-bearing strata;

[0007] Detecting the transitional phase shale in the basin area to be tested to obtain sedimentological index parameters and geochemical index parameters corresponding to the basin area to be tested;

[0008] Based on the sedimentological index parameters and geochemical index parameters corresponding to the basin area to be measured, the transitional phase shale depositional environment classification result of the basin area to be measured is determined by a preset transitional phase shale depositional environment classification model. The preset transitional phase shale depositional environment classification model is a transitional phase shale depositional facies analysis under the comprehensive effects of climate, environment and plants at the basin scale, and a classification model of transitional phase shale depositional environments of different origins under sedimentological indicators and geochemical indicators is established.

[0009] According to another aspect of the present invention, a transitional phase shale deposition environment identification device is provided, which is configured in a transitional phase shale deposition environment identification device, wherein the transitional phase shale deposition environment identification device is set at a well site and / or a base data center. The method includes:

[0010] A region determination module is used to determine a basin region to be measured, wherein the basin region to be measured is a basin region formed by Carboniferous-Permian coal-bearing strata;

[0011] Establishing a parameter module for detecting the transitional phase shale in the basin area to be tested to obtain sedimentological index parameters and geochemical index parameters corresponding to the basin area to be tested;

[0012] The environmental identification module is used to determine the transitional phase shale depositional environment classification result of the basin area to be measured based on the sedimentological indicator parameters and geochemical indicator parameters corresponding to the basin area to be measured, through a preset transitional phase shale depositional environment classification model. The preset transitional phase shale depositional environment classification model is a transitional phase shale depositional facies analysis under the comprehensive effects of climate, environment and plants at the basin scale, and a classification model of transitional phase shale depositional environments of different genesis under sedimentological indicators and geochemical indicators is established.

[0013] According to another aspect of the present invention, an electronic device is provided, comprising:

[0014] at least one processor; and

[0015] a memory communicatively connected to the at least one processor; wherein,

[0016] 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 the method for identifying the transitional shale depositional environment described in any embodiment of the present invention.

[0017] 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 the method for identifying a transitional phase shale depositional environment according to any embodiment of the present invention when executed.

[0018] The present invention discloses a method, device, equipment, and storage medium for identifying a transitional phase shale sedimentary environment. The method comprises: determining a basin area to be tested, wherein the basin area to be tested is a basin area composed of Carboniferous-Permian coal-bearing strata; testing the transitional phase shale in the basin area to be tested to obtain sedimentological index parameters and geochemical index parameters corresponding to the basin area to be tested; and determining a classification result of the transitional phase shale sedimentary environment in the basin area to be tested by using a preset transitional phase shale sedimentary environment classification model based on the sedimentological index parameters and geochemical index parameters corresponding to the basin area to be tested. The technical solution of the present invention determines the classification result of the transitional phase shale sedimentary environment in the basin area to be tested by using a preset transitional phase shale sedimentary environment classification model, thereby overcoming the limitation of being effective only for transitional phase shale objects in a single region and improving the universality and accuracy of the method for identifying the sedimentary environment of transitional phase shale.

[0019] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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.

[0021] Figure 1 This is a flow chart of a method for identifying a transitional shale depositional environment according to an embodiment of the present invention;

[0022] Figure 2 A distribution map of drilling locations in a study area provided according to an embodiment of the present invention;

[0023] Figure 3 This is an outcrop identification and division map of a study area provided according to an embodiment of the present invention;

[0024] Figure 4 is a supratidal wetland facies interpretation map provided according to an embodiment of the present invention;

[0025] Figure 5 A shallow water delta-tidal flat-bay sedimentary pattern diagram provided according to an embodiment of the present invention;

[0026] Figure 6 This is a flow chart of a method for rapidly identifying transitional shale depositional environments according to an embodiment of the present invention;

[0027] Figure 72 is a schematic structural diagram of a device for identifying a transitional shale depositional environment according to an embodiment of the present invention;

[0028] Figure 8 It is a structural schematic diagram of an electronic device for implementing the method for identifying the transitional phase shale deposition environment according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions 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 embodiments described 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 making creative efforts should fall within the scope of protection of the present invention.

[0030] It should be noted that the terms "first", "second", etc. in the description 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 numbers 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 clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] Figure 1 The present invention provides a flowchart of a method for identifying a transitional phase shale deposition environment. This embodiment is applicable to identifying a transitional phase shale deposition environment. The method can be executed by a transitional phase shale deposition environment identification device. The transitional phase shale deposition environment identification device can be implemented in the form of hardware and / or software. The transitional phase shale deposition environment identification device can be configured in any electronic device with network communication capabilities. Figure 1 As shown, the method includes:

[0032] S110 . Determine a basin area to be measured, where the basin area to be measured is a basin area formed by Carboniferous-Permian coal-bearing strata.

[0033] In the examples of this application, the basin region to be tested refers to a basin region containing transitional facies shale gas resources in the Carboniferous-Permian coal-bearing strata. In this example, basins composed of transitional organic-rich mud shale are studied. Field outcrop and core observations, sampling, geochemical parameters, and physical property data are analyzed to investigate shale gas accumulation conditions, including the sedimentary facies, thickness and distribution, organic matter type and content, thermal maturity, and porosity of the organic-rich mud shale.

[0034] S120 , detecting the transitional phase shale in the basin area to be measured to obtain sedimentological index parameters and geochemical index parameters corresponding to the basin area to be measured.

[0035] In the present application, a transition phase refers to a state of matter between two distinct phases during a phase transition. During the transition from one phase to another, the material first transitions to the transition phase before completing the phase transition. A marine-continental transition phase refers to sedimentary products formed in a transitional environment characterized by the combined influence of ocean wave and tidal forces and continental river forces.

[0036] It should be noted that the sedimentological index parameters and geochemical index parameters are used as index parameters for the subsequent classification of marine-continental transitional shale sedimentary environment.

[0037] As an optional but non-limiting implementation, the transitional phase shale in the basin area to be tested is tested to obtain sedimentological index parameters and geochemical index parameters corresponding to the basin area to be tested, including steps A1-A2:

[0038] Step A1: Determine reference information corresponding to the basin area to be tested, wherein the reference information includes cores from areas with similar genesis to the transitional phase shale gas in the basin area to be tested, distribution of drilling positions in the basin area to be tested, and geochemical test data of the basin area to be tested.

[0039] Step A2: Detecting the transitional phase shale in the basin area to be measured based on the reference information to obtain sedimentological index parameters and geochemical index parameters corresponding to the basin area to be measured.

[0040] In the embodiments of the present application, it should be noted that the classification of the marine-continental transitional shale sedimentary environment is carried out based on reference information. The reference information includes cores, borehole location distribution and chemical test data in areas with similar genesis to the transitional shale gas in the basin area to be tested. The specific implementation method is to collect core and borehole information and geochemical test data from areas with similar genesis to the transitional shale gas in the study area, including the latest research progress at home and abroad related to this content. From the dimension of genesis, shale gas includes almost all organic matter gas generation modes such as biochemical genesis, pyrolysis, cracking genesis and mixed genesis, and can be hidden in all stages from immature to highly mature. For example Figure 2 The distribution of drilling locations in area A, which has a similar transitional shale depositional environment to the basin area to be measured, is shown. The multiple dense black dots in the figure are drilling locations.

[0041] It should be noted that the sedimentological index parameters include sedimentary facies and sedimentary patterns, lithofacies types and interpretations, and paleoclimatic conditions; and the geochemical index parameters include organic geochemical analysis, elemental geochemical analysis, and rock and mineral composition analysis.

[0042] S130. Based on the sedimentological index parameters and geochemical index parameters corresponding to the basin area to be measured, the transitional phase shale depositional environment classification result of the basin area to be measured is determined by a preset transitional phase shale depositional environment classification model. The preset transitional phase shale depositional environment classification model is a classification model of transitional phase shale depositional environments of different origins under the sedimentological and geochemical indicators established by analyzing the transitional phase shale depositional facies under the combined effects of climate, environment, and plants at the basin scale.

[0043] In the examples of this application, it should be noted that the preset transitional shale sedimentary environment classification model is based on a basin-scale analysis of transitional shale sedimentary facies under the combined effects of climate, environment, and vegetation, establishing a shale sedimentary environment classification scheme that is jointly verified by multiple parameter indicators. The basin scale includes both time and space scales. The time scale refers to the length of the tectonic evolution period experienced by the tectonic landform, and the spatial scale refers to the size of the landform distribution range.

[0044] The transitional shale samples of different genesis collected from the basin to be tested are combined with other controlling factors, including climate, structure, environment, etc., to interpret the genesis of the collected samples.

[0045] Among them, the process of establishing a sedimentary model refers to taking the transitional shale field outcrop profile or drill core as the research object, applying the modeled coal-bearing outcrop profile sedimentary environment analysis method, and referring to the lithofacies division standard, according to the six steps of geological stratification and numbering (lithology differences, color differences, fossil species differences, thick layer changes, sedimentary structure changes, scour surface, exposure surface and flooding surface), stratification description and recording (rock characteristics such as occurrence characteristics, thick layer characteristics, contact relationship and sedimentary structure; lithology characteristics such as clastic rock, mudstone, chemical rock, organic rock; fossil characteristics; sketches; photography), lithofacies induction and sedimentary environment interpretation (rock layer characteristics, lithology characteristics and biological fossils and other lithofacies identification basis; lithofacies summary and interpretation; comparative analysis of connected wells in the study area; determination of sedimentary environment with reference to previous achievements, sedimentary model comparison and Walter facies ratio), drawing of freehand lithofacies profile (vertical scale, layer number, layer thickness, lithology filling, sedimentary structure, sedimentary environment and marker layer), sedimentary model and profile environment evolution, and collation of indoor data.

[0046] Each lithofacies combination is a unique and genetically related sedimentary environment. Transitional shale can be generally divided into three sedimentary environments: delta, tidal flat and bay. It can be further divided into eight sedimentary microfacies: upper delta plain river lake and backshore wetland, lower delta plain inter-distributary bay, intertidal zone, supratidal wetland, supratidal dry land, nearshore bay and farshore bay. According to the evolution of sedimentary environment, the shallow water delta-tidal flat-bay system sedimentary model of transitional shale was established.

[0047] See also Figure 4 The supratidal wetland facies interpretation plate is shown. Figure 4 Figure a is a panoramic view of the supratidal wetland and dryland shale profiles; b is a detailed view of the supratidal wetland shale outcrop; c is a photo of a hand-collected shale sample, showing well-developed lamellae; d and e are photos of thin sections of shale samples (single polarized light), showing a large amount of organic matter in the form of bands, mainly vitrinite (dark red); f and g are oil microscope photos of shale samples, showing rich organic matter; h and i are scanning electron microscope photos of shale samples, showing that organic matter is developed in bands and is rich in content.

[0048] See also Figure 5 Diagram showing the sedimentation pattern of shallow delta-tidal flat-bay.

[0049] As an optional but non-limiting implementation method, based on the sedimentological indicator parameters and geochemical indicator parameters corresponding to the basin area to be measured, the transitional phase shale depositional environment classification result of the basin area to be measured is determined by a preset transitional phase shale depositional environment classification model, including steps B1-B2:

[0050] Step B1: Measure and catalog core data of a first object corresponding to the basin area to be measured to obtain sedimentological index parameters corresponding to the basin area to be measured, wherein the first object is a typical transitional shale outcrop or drill core profile selected from the transitional shale in the basin area to be measured.

[0051] In the examples of this application, transitional shale samples collected from different locations in the basin to be measured were measured and cored, and transitional shale with typical characteristics was selected for analysis. Figure 3 , showing that the transitional phase shale samples collected from different directions in the basin area to be tested are transitional phase shale outcrops and drill core profiles.

[0052] Step B2: Perform a preset analysis on a second object corresponding to the basin area to be measured to obtain geochemical index parameters corresponding to the basin area to be measured, wherein the second object is transitional phase shale samples of different genesis collected from the transitional phase shale in the basin area to be measured, and the preset analysis includes experimental analysis corresponding to rock thin section identification, mineralogy, elemental geochemistry, organic geochemistry and kerogen microscopic components.

[0053] In the examples of this application, thin-section identification, mineralogy, elemental geochemistry, organic geochemistry, and kerogen maceral composition were performed on the collected transitional shale samples of different origins. Through thin-section analysis, X-ray diffraction, inductive coupling, and kerogen analysis, the mineral composition and organic matter type (TOC) in the microscopic environment can be determined, with a focus on changes in the composition of organic macerals, authigenic clay minerals, coarse clastic particles (feldspar, quartz), and interlayered thin sandstone. Geochemical methods, primarily based on major and trace elements (P, Al, S, Sr, Ba, B, Ga, U, Th, etc.) and their ratios (P / Al, S / TOC, Sr / Ba, B / Ga, U / Th, etc.), are used to determine the sensitive effects of elements on various environments during migration and change.

[0054] As an optional but non-limiting implementation method, the first object corresponding to the basin area to be measured is measured and core cataloged to obtain sedimentological indicator parameters corresponding to the basin area to be measured, including the sedimentological indicator parameters including sample collection corresponding to geological stratification description, facies summary and genetic interpretation; the geological stratification description content includes rock layer characteristics and lithologic characteristics, the rock layer characteristics include color, occurrence, rock layer morphology, layer thickness, contact relationship and structure, and the lithologic characteristics include rock structure and material composition.

[0055] In the embodiments of the present application, it should be noted that the geological stratification description refers to the description of rock layer characteristics and lithologic characteristics. The main characteristic rock layer refers to a geological body composed of the same lithology and bounded by two parallel or nearly parallel interfaces. It usually consists of one or several layers. It is the basic stratigraphic unit and lithologic unit of the sedimentary sphere. Rock layer characteristics include color, occurrence, rock layer morphology, layer thickness, contact relationship and structure. Rock color can be used as an important basis for rock stratification, and single layer thickness can be used as a basis for rock stratification. Strata can be divided according to rock particle composition.

[0056] Lithologic characteristics include rock structure and material composition. Lithologic types generally fall into two categories: rock and soil. Rock is a naturally occurring, solid aggregate composed of one or more minerals (including volcanic glass, biological remains, and colloids). It is the solid component of the Earth's crust and mantle. Rocks can be divided into sedimentary, igneous, and metamorphic rocks based on their origin. Soil is a loose, soft accumulation of material that has not yet consolidated into rock, primarily a product of the Quaternary period.

[0057] As an optional but non-limiting implementation method, the sedimentological indicator parameters include geological stratification description, lithofacies summary and sample collection corresponding to genetic interpretation, including the sample collection corresponding to the genetic interpretation is the genetic interpretation of transitional shale lithofacies and sampling of transitional shales of different genesis, the sampling spacing is 20-30 cm, and the sampling weight is 200-300 g / piece.

[0058] In the examples of the present application, it should be noted that the genesis of samples collected at different geographical locations in the basin to be tested may be different, and the genesis of the transitional shale samples is interpreted in combination with factors such as climate, structure, and environment.

[0059] As an optional but non-limiting implementation method, a preset analysis is performed on the second object corresponding to the basin area to be measured to obtain geochemical indicator parameters corresponding to the basin area to be measured, including that the geochemical indicator parameters include the mineral composition and organic matter type under the microscopic environment, and the geochemical indicator parameters also include changes in the material composition of organic microscopic components, authigenic clay minerals, coarse debris particles and interlayer thin sandstones, as well as the sensitive effects of major and trace elements on various environments during migration and change.

[0060] In the examples of this application, geochemical parameters serve as the basis for classifying the sedimentary environments of transitional shale deposits using samples collected from different geographic locations within the basin under investigation. These parameters include organic geochemical analysis, elemental geochemical analysis, and rock and mineral composition analysis. Specifically, these parameters include variations in the composition of organic macerals, authigenic clay minerals, coarse clastic particles, and intercalated thin sandstones, as well as the ratios of major and trace elements.

[0061] As an optional but non-limiting implementation, the geochemical indicator parameters include the mineral composition and organic matter type under the microscopic environment, the geochemical indicator parameters also include the material composition changes of organic microscopic components, authigenic clay minerals, coarse detrital particles and interbedded thin sandstones, and the sensitivity of major and trace elements to various environments during migration and change. The sensitivity of the major and trace elements to various environments during migration and change is determined based on the preset ratios between the major and trace elements in the transitional phase shale and the major and trace elements in the transitional phase shale, the major and trace elements including P, Al, S, Sr, Ba, B, Ga, U and Th, and the preset ratios between the major and trace elements are P / Al, S / TOC, Sr / Ba, B / Ga, and U / Th.

[0062] In this embodiment, geochemical index parameters are the basis for classifying the sedimentary environment of transitional shale by collecting samples from different geographical locations in the basin to be tested. Mineral morphology and structure in the microscopic environment include the morphology, crystal faces, crystal growth mode, crystal distortion and defects of mineral crystals. Mineral composition refers to the rich element composition, such as calcium, magnesium, phosphorus, zinc, potassium, boron, manganese, etc. Organic matter types include carbon-containing organic matter such as animal and plant remains, decomposed and generated organic matter, and microorganisms. It is a high-molecular organic compound, such as carbon, hydrogen, and oxygen.

[0063] Among them, the main trace elements include P, Al, S, Sr, Ba, B, Ga, U and Th, which correspond to phosphorus, aluminum, sulfur, strontium, barium, boron, gallium, uranium and thorium in the periodic table respectively.

[0064] Based on the above steps, Figure 6 A flow chart of the method for rapidly identifying the depositional environment of transitional shale is shown.

[0065] First, core and drill hole data and geochemical test data from areas with similar transitional shale gas genesis to the study area are collected, including the latest research progress related to this content at home and abroad.

[0066] Second, measure and log the typical transitional shale outcrops or drill core sections, such as Figure 3 The main contents include geological stratification description, lithofacies summary and genetic interpretation, and sample collection. The stratification description includes rock layer characteristics and lithologic characteristics. The former includes color, occurrence, rock layer morphology, layer thickness, contact relationships, and structure, while the latter includes rock structure and material composition. In combination with other controlling factors (climate, structure, environment, etc.), the transitional shale lithofacies is interpreted. Samples are collected from different transitional shale genesis, with sampling spacing of 20-30 cm and sample weight of 200-300g per piece.

[0067] Third, thin-section identification, mineralogy, elemental geochemistry, organic geochemistry, and kerogen maceral composition were performed on the collected transitional shale samples from different origins. Thin-section analysis, X-ray diffraction, inductive coupling, and kerogen analysis determined the mineralogy and organic matter (TOC) types within the microscopic environment, focusing on variations in the composition of organic macerals, authigenic clay minerals, coarse clastic particles (feldspar, quartz), and interbedded thin sandstones. Geochemical methods, primarily based on major and trace elements (P, Al, S, Sr, Ba, B, Ga, U, Th, etc.) and their ratios (P / Al, S / TOC, Sr / Ba, B / Ga, U / Th, etc.), determined the sensitivity of elements to various environments during their migration and changes.

[0068] Finally, based on the results of steps two and three, a basin-scale analysis of the transitional shale sedimentary facies under the combined effects of climate, environment, and plants was conducted, and a classification scheme for the sedimentary environments of transitional shale with different genesis was established using multi-parameter indicators.

[0069] The present invention discloses a method for identifying a transitional phase shale sedimentary environment. The method comprises: determining a basin area to be tested, wherein the basin area to be tested is a basin area composed of Carboniferous-Permian coal-bearing strata; testing the transitional phase shale in the basin area to be tested to obtain sedimentological index parameters and geochemical index parameters corresponding to the basin area to be tested; and determining the classification result of the transitional phase shale sedimentary environment of the basin area to be tested by a preset transitional phase shale sedimentary environment classification model based on the sedimentological index parameters and geochemical index parameters corresponding to the basin area to be tested. By adopting the scheme of the present application, the classification result of the transitional phase shale sedimentary environment of the basin area to be tested is determined by a preset transitional phase shale sedimentary environment classification model, which solves the limitation of being effective only for transitional phase shale objects in a single region and improves the universality and accuracy of the method for identifying the sedimentary environment of transitional phase shale.

[0070] Figure 7 The schematic diagram of the structure of a device for identifying a transitional shale depositional environment provided by an embodiment of the present invention is shown in FIG. Figure 7 As shown, the device includes:

[0071] The region determination module 510 is configured to determine a basin region to be measured, wherein the basin region to be measured is a basin region formed by Carboniferous-Permian coal-bearing strata;

[0072] Establishing a parameter module 520 for detecting the transitional phase shale in the basin area to be tested to obtain sedimentological index parameters and geochemical index parameters corresponding to the basin area to be tested;

[0073] The environmental identification module 530 is used to determine the transitional phase shale depositional environment classification result of the basin area to be measured based on the sedimentological indicator parameters and geochemical indicator parameters corresponding to the basin area to be measured, through a preset transitional phase shale depositional environment classification model. The preset transitional phase shale depositional environment classification model is a transitional phase shale depositional facies analysis under the comprehensive effects of climate, environment and plants at the basin scale, and a classification model of transitional phase shale depositional environments of different origins under sedimentological indicators and geochemical indicators is established.

[0074] Optionally, establishing a parameter module 520 includes:

[0075] Determining reference information corresponding to the basin area to be tested, the reference information including cores from areas with similar genesis to the transitional phase shale gas in the basin area to be tested, distribution of drill hole locations in the basin area to be tested, and geochemical test data of the basin area to be tested;

[0076] Based on the reference information, the transitional phase shale in the basin area to be measured is detected to obtain sedimentological index parameters and geochemical index parameters corresponding to the basin area to be measured.

[0077] Optionally, the environment recognition module 530 includes:

[0078] Measuring and core logging a first object corresponding to the basin region to be measured to obtain sedimentological index parameters corresponding to the basin region to be measured, wherein the first object is a typical transitional facies shale outcrop or a drill core profile selected from transitional facies shales in the basin region to be measured;

[0079] A preset analysis is performed on the second object corresponding to the basin area to be measured to obtain geochemical indicator parameters corresponding to the basin area to be measured. The second object is transitional phase shale samples of different origins collected from the transitional phase shale in the basin area to be measured. The preset analysis includes experimental analysis corresponding to rock thin section identification, mineralogy, elemental geochemistry, organic geochemistry and kerogen microscopic components.

[0080] Optionally, the transitional phase shale in the basin area to be tested is tested to obtain sedimentological indicator parameters and geochemical indicator parameters corresponding to the basin area to be tested, including the sedimentological indicator parameters including sample collection corresponding to the geological stratification description, lithofacies summary and genetic interpretation; the geological stratification description content includes rock layer characteristics and lithologic characteristics, the rock layer characteristics include color, occurrence, rock layer morphology, layer thickness, contact relationship and structure, and the lithologic characteristics include rock structure and material composition.

[0081] Optionally, the sedimentological indicator parameters include sample collection corresponding to geological stratification description, lithofacies summary and genetic interpretation, including sample collection corresponding to the genetic interpretation for transitional shale lithofacies and sampling of transitional shales of different genesis, with a sampling spacing of 20-30 cm and a sampling weight of 200-300 g / piece.

[0082] Optionally, a preset analysis is performed on the second object corresponding to the basin area to be measured to obtain geochemical indicator parameters corresponding to the basin area to be measured, including that the geochemical indicator parameters include the mineral composition and organic matter type under the microscopic environment, and the geochemical indicator parameters also include changes in the material composition of organic microscopic components, authigenic clay minerals, coarse debris particles and interlayer thin sandstones, as well as the sensitive effects of major and trace elements to various environments during migration and change.

[0083] Optionally, the geochemical indicator parameters include the mineral composition and organic matter type under the microscopic environment, and the geochemical indicator parameters also include the changes in the material composition of organic microscopic components, authigenic clay minerals, coarse debris particles and interlayer thin sandstones, and the sensitive effects of major and trace elements to various environments during migration and change, including that the sensitive effects of the major and trace elements to various environments during migration and change are determined based on the preset ratios between the major and trace elements in the transitional phase shale and the major and trace elements in the transitional phase shale, the major and trace elements include P, Al, S, Sr, Ba, B, Ga, U and Th, and the preset ratios between the major and trace elements are P / Al, S / TOC, Sr / Ba, B / Ga, U / Th.

[0084] The transitional phase shale deposition environment identification device provided in the embodiment of the present invention can execute the transitional phase shale deposition environment identification method provided in any embodiment of the present invention mentioned above, and has the corresponding functions and beneficial effects of executing the transitional phase shale deposition environment identification method. For detailed process, please refer to the relevant operations of the transitional phase shale deposition environment identification method in the aforementioned embodiment.

[0085] Figure 8 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 claimed herein.

[0086] like Figure 8 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., which is communicatively connected to the at least one processor 11. The memory stores a computer program that can be executed by the at least one processor. 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 into the random access memory (RAM) 13. Various programs and data required for the operation of the electronic device 10 can also be stored in the RAM 13. The processor 11, ROM 12, and RAM 13 are connected to each other via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0087] Multiple 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 magnetic 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 via a computer network such as the Internet and / or various telecommunication networks.

[0088] The processor 11 can be various general-purpose and / or specialized 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 specialized artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as the method for identifying transitional shale depositional environments.

[0089] In some embodiments, the method for identifying a transitional shale depositional environment can be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the method for identifying a transitional shale depositional environment described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to perform the method for identifying a transitional shale depositional environment by any other suitable means (e.g., by means of firmware).

[0090] Various embodiments of the systems and techniques described 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), system-on-chip systems (SOCs), programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include being implemented in one or more computer programs that are executable and / or interpreted on a programmable system comprising 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.

[0091] 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, such that when the computer program is executed by the processor, the functions / operations specified in the flowcharts and / or block diagrams are implemented. The computer program may be executed entirely on the machine, partially on the machine, as a stand-alone software package, partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0092] In the context of the present invention, computer-readable storage media can be tangible media that can contain or store a computer program for use with an instruction execution system, device or equipment or used in combination with an instruction execution system, device or equipment. Computer-readable storage media can include but are not limited to electronic, magnetic, optical, electromagnetic, infrared or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, computer-readable storage media can be machine-readable signal media. More specific examples of machine-readable storage media can include electrical connections based on one or more lines, portable computer disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM or flash memory), optical fibers, portable compact disk read-only memories (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0093] To provide interaction with a user, the systems and techniques described herein can 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 pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0094] The systems and techniques described herein can be implemented in a computing system that includes back-end 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 front-end components (e.g., a user computer with a graphical user interface or 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 back-end components, middleware components, or front-end components. The components of the system can 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.

[0095] A computing system may include clients and servers. The clients and servers are typically remote from each other and typically interact via a communication network. This client-server relationship arises through computer programs running on the respective computers, creating a client-server relationship. The server may be a cloud server, also known as a cloud computing server or cloud host. This server is a hosting product within the cloud computing service ecosystem that addresses the management difficulties and limited scalability of traditional physical hosting and VPS services.

[0096] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0097] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A method for identifying the sedimentary environment of transitional shale, characterized in that: The method comprises: Determining a basin area to be measured, wherein the basin area to be measured is a basin area composed of Carboniferous-Permian coal-bearing strata; Detecting the transitional phase shale in the basin area to be tested to obtain sedimentological index parameters and geochemical index parameters corresponding to the basin area to be tested; Based on the sedimentological index parameters and geochemical index parameters corresponding to the basin area to be measured, the transitional phase shale depositional environment classification result of the basin area to be measured is determined by a preset transitional phase shale depositional environment classification model. The preset transitional phase shale depositional environment classification model is a transitional phase shale depositional facies analysis under the comprehensive effects of climate, environment and plants at the basin scale, and a classification model of transitional phase shale depositional environments of different origins under sedimentological indicators and geochemical indicators is established.

2. The method according to claim 1, characterized in that The transitional phase shale in the basin area to be tested is tested to obtain sedimentological index parameters and geochemical index parameters corresponding to the basin area to be tested, including: Determining reference information corresponding to the basin area to be tested, the reference information including cores from areas with similar genesis to the transitional phase shale gas in the basin area to be tested, distribution of drill hole locations in the basin area to be tested, and geochemical test data of the basin area to be tested; Based on the reference information, the transitional phase shale in the basin area to be measured is detected to obtain sedimentological index parameters and geochemical index parameters corresponding to the basin area to be measured.

3. The method according to claim 1 or 2, characterized in that The transitional phase shale in the basin area to be tested is tested to obtain sedimentological index parameters and geochemical index parameters corresponding to the basin area to be tested, including: Measuring and core logging a first object corresponding to the basin region to be measured to obtain sedimentological index parameters corresponding to the basin region to be measured, wherein the first object is a typical transitional facies shale outcrop or a drill core profile selected from transitional facies shales in the basin region to be measured; A preset analysis is performed on the second object corresponding to the basin area to be measured to obtain geochemical indicator parameters corresponding to the basin area to be measured. The second object is transitional phase shale samples of different origins collected from the transitional phase shale in the basin area to be measured. The preset analysis includes experimental analysis corresponding to rock thin section identification, mineralogy, elemental geochemistry, organic geochemistry and kerogen microscopic components.

4. The method according to claim 3, characterized in that The sedimentological index parameters include sample collection corresponding to geological stratification description, lithofacies summary and genetic interpretation; the geological stratification description content includes rock layer characteristics and lithologic characteristics, the rock layer characteristics include color, occurrence, rock layer morphology, layer thickness, contact relationship and structure, and the lithologic characteristics include rock structure and material composition.

5. The method according to claim 3, characterized in that The sample collection corresponding to the genetic interpretation is to conduct genetic interpretation of the transitional shale lithofacies and to sample transitional shales of different genetic origins, with a sampling spacing of 20-30 cm and a sampling weight of 200-300 g / piece.

6. The method according to claim 3, characterized in that The geochemical indicator parameters include the mineral composition and organic matter type under the microscopic environment. The geochemical indicator parameters also include the changes in the material composition of organic microscopic components, authigenic clay minerals, coarse debris particles and interlayer thin sandstones, as well as the sensitive effects of major and trace elements on various environments during migration and change.

7. The method according to claim 6, characterized in that The sensitive effects of the main and trace elements to various environments during migration and change are determined based on preset ratios between the main and trace elements in the transitional phase shale and the main and trace elements in the transitional phase shale. The main and trace elements include P, Al, S, Sr, Ba, B, Ga, U and Th, and the preset ratios between the main and trace elements are P / Al, S / TOC, Sr / Ba, B / Ga, and U / Th.

8. A device for identifying the sedimentary environment of transitional shale, characterized in that: include: A region determination module is used to determine a basin region to be measured, wherein the basin region to be measured is a basin region formed by Carboniferous-Permian coal-bearing strata; Establishing a parameter module for detecting the transitional phase shale in the basin area to be tested to obtain sedimentological index parameters and geochemical index parameters corresponding to the basin area to be tested; The environmental identification module is used to determine the transitional phase shale depositional environment classification result of the basin area to be measured based on the sedimentological indicator parameters and geochemical indicator parameters corresponding to the basin area to be measured, through a preset transitional phase shale depositional environment classification model. The preset transitional phase shale depositional environment classification model is a transitional phase shale depositional facies analysis under the comprehensive effects of climate, environment and plants at the basin scale, and a classification model of transitional phase shale depositional environments of different genesis under sedimentological indicators and geochemical indicators is established.

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 to enable the at least one processor to perform the method for identifying a transitional phase shale depositional environment according to any one of claims 1 to 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 the method for identifying a transitional phase shale depositional environment according to any one of claims 1 to 7 when executed.

Images