In-situ micro-region fluid tracing method, device, storage medium and computer equipment

Abstract

The present invention provides an in-situ micro-area fluid tracing method, device, storage medium and computer equipment. The method comprises the following steps: obtaining the element types and the content of each element contained in the filling minerals in the target reservoir; predicting at least one mineral type contained in the filling minerals according to the element types and the content of each element, combined with the morphological characteristics of the filling minerals; performing internal structural component phase analysis on each type of filling mineral, and determining the diagenetic evolution process of the filling mineral of this type according to the analysis results. The method of the present invention can accurately determine the diagenetic evolution process of the filling minerals in the reservoir.

Description

Technical Field

[0001] The present invention relates to the technical field of in-situ micro-region fluid tracing, and in particular to an in-situ micro-region fluid tracing method, device, storage medium and computer equipment. Background Art

[0002] In my country, carbonate reservoirs in the Tarim, Sichuan, and Ordos basins are mostly old and deeply buried, and have generally undergone complex and multi-type fluid dissolution and transformation. As a result, they often show characteristics such as multiple reservoir types and multiple pore fillings. Therefore, accurate tracing and identification of these dissolution and transformation fluid types and analysis of structural environments are key links in conducting research on reservoir development mechanisms and making favorable regional predictions. At present, a variety of geochemical identification methods for powder samples have been developed, but the cost of ion probe analysis is too high at the pore micro-area-in-situ scale. Therefore, it is urgent and necessary to develop an effective and rapid in-situ micro-area fluid tracing method suitable for carbonate reservoirs.

[0003] At present, there are four main research methods commonly used for elemental (or mineral) analysis of carbonate rocks. The first is based on X-ray diffraction, which uses the diffraction phenomenon produced by X-ray irradiation on the substance to be tested to estimate the percentage of each mineral type in the sample. The disadvantage of this method is that it is not sensitive to low-content minerals and cannot be identified. In addition, it cannot analyze some amorphous substances. The second method is cathode luminescence, which uses the electron beam emitted by a cathode ray tube to bombard the sample to generate secondary electrons, and identifies the common mineral types in carbonate rocks (such as dolomite, calcite, ferrocalcite, etc., the above common minerals can be distinguished by dyeing methods) through the luminescence phenomenon of secondary electrons. However, since the dyeing process is greatly affected by human factors, the accuracy of its mineral identification is relatively low. The third method is LA-ICP-MS (Laser Ablation Inductively Coupled Plasma Mass Spectrometry), which uses laser to in-situ ablation of carbonate minerals and uses ICP-MS to analyze their evaporated products. It has a certain effect on carbonate rock mineral analysis, but this method also has certain shortcomings: because the beam spot of this type of equipment is relatively large during the detection process, and relatively low-content clay minerals are commonly found in carbonate rocks, this results in the inability of its detection results to accurately reflect the complex and changeable fluid transformation types. The fourth method is the electron probe, which has the characteristics of fast detection speed, high accuracy, and a wide range of detection elements, and can make up for the shortcomings of the above three methods to a certain extent. However, there is no method to effectively identify the fluid action and diagenetic stage in the formation process of carbonate reservoirs using electron probes. Summary of the invention

[0004] The main purpose of the present invention is to provide an in-situ micro-area fluid tracing method, device, storage medium and computer equipment to determine the diagenetic evolution process of minerals in the reservoir.

[0005] In a first aspect, the present invention provides an in-situ micro-area fluid tracing method, comprising the following steps: obtaining the types of elements contained in the filling minerals in the target reservoir and the content of each element; predicting at least one mineral type contained in the filling mineral based on the types of elements and the content of each element in combination with the morphological characteristics of the filling mineral; performing internal structural component phase analysis on each type of filling mineral, and determining the diagenetic evolution process of this type of filling mineral based on the analysis results.

[0006] In one embodiment, obtaining the types of elements contained in the filling minerals in the target reservoir and the content of each element includes: determining the types of elements contained in the filling minerals in the target reservoir and the content of each element using an elemental geochemical analysis method.

[0007] In one embodiment, performing internal structural component phase analysis on each type of filling mineral includes: performing internal structural component phase analysis on each type of filling mineral using an electron probe combined with a cathode luminescence method.

[0008] In one embodiment, the diagenetic evolution process of this type of filling mineral is determined based on the analysis results, including: determining the internal structure and micro-region fluid type of this type of filling mineral based on the analysis results, wherein the internal structure includes a ring-generation structure; dividing the diagenetic periods of this type of filling mineral according to the ring-generation structure and micro-region fluid type of this type of filling mineral, thereby determining the diagenetic evolution process of this type of filling mineral.

[0009] In one embodiment, before predicting at least one mineral type contained in the filling mineral, the method also includes the steps of: obtaining the crystal structure type and phase composition of the filling mineral in the target reservoir; predicting at least one mineral type contained in the filling mineral based on the type of elements and the content of each element, combined with the morphological characteristics of the filling mineral, including: predicting at least one mineral type contained in the filling mineral based on the type of elements and the content of each element, combined with the morphological characteristics, crystal structure type and phase composition of the filling mineral.

[0010] In one embodiment, the crystal structure type of the filling minerals in the target reservoir is obtained by using a transmission electron microscope observation method; and the phase composition of the filling minerals in the target reservoir is obtained by using an inclusion analysis method.

[0011] In one embodiment, after performing internal structural component phase analysis on each type of filling mineral, the method further includes the steps of: redetermining the mineral type of the filling mineral according to the analysis results; and determining the diagenetic evolution process of this type of filling mineral based on the redetermined mineral type according to the analysis results.

[0012] In the second aspect, the present application provides an in-situ micro-area fluid tracing device, comprising: a data acquisition module, used to obtain the types of elements contained in the filling minerals in the target reservoir and the content of each element; a type determination module, used to predict at least one mineral type contained in the filling mineral based on the types of elements and the content of each element, combined with the morphological characteristics of the filling mineral; an evolution analysis module, used to perform internal structural component phase analysis on each type of filling mineral, and determine the diagenetic evolution process of this type of filling mineral based on the analysis results.

[0013] In a third aspect, the present application provides a storage medium storing a computer program, which, when executed by a processor, implements the steps of the in-situ micro-area fluid tracing method as described above.

[0014] In a fourth aspect, the present application provides a computer device, comprising a processor and a storage medium storing program codes, wherein when the program codes are executed by the processor, the steps of the in-situ micro-area fluid tracing method as described above are implemented.

[0015] Compared with the prior art, one or more embodiments of the above scheme may have the following advantages or beneficial effects:

[0016] Through the method of the present invention, for reservoirs that have undergone complex and multi-type fluid dissolution and transformation and have the characteristics of multiple reservoir types and multiple pore fillings, their internal ring-generation structure can be analyzed, and the micro-region fluid type of the filling minerals in the reservoir during the dissolution and transformation process can be accurately traced and identified, thereby determining the diagenetic evolution process of the filling minerals in the reservoir. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 is a flow chart of an in-situ micro-region fluid tracing method according to an exemplary embodiment of the present application;

[0019] Figure 2 It is a flow chart of an in-situ micro-region fluid tracing method according to a specific embodiment of the present application;

[0020] Figure 3This is a sample point map for electron probe mineral type analysis of carbonate reservoir samples in a certain area according to a specific embodiment of the present application. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] Embodiment 1

[0023] This embodiment provides an in-situ micro-region fluid tracing method. Figure 1 FIG. 1 is a flow chart of an in-situ micro-region fluid tracing method according to an exemplary embodiment of the present application. Figure 1 As shown, the method of this embodiment includes the following steps:

[0024] S100: Obtain the types of elements contained in the filling minerals in the target reservoir and the content of each element.

[0025] Specifically, the element geochemical analysis method can be used to determine the types of elements contained in the filling minerals in the target reservoir and the content of each element.

[0026] S200: predicting at least one mineral type contained in the filling mineral according to the element types and the content of each element and in combination with the morphological characteristics of the filling mineral.

[0027] Before predicting at least one mineral type contained in the filling mineral, the method may further include the step of obtaining the crystal structure type and phase composition of the filling mineral in the target reservoir. Accordingly, predicting at least one mineral type contained in the filling mineral based on the element type and the content of each element, combined with the morphological characteristics of the filling mineral, may include predicting at least one mineral type contained in the filling mineral based on the element type and the content of each element, combined with the morphological characteristics, crystal structure type and phase composition of the filling mineral.

[0028] Specifically, the crystal structure type of the filling minerals in the target reservoir can be obtained by using a transmission electron microscope observation method, and the phase composition of the filling minerals in the target reservoir can be obtained by using an inclusion analysis method.

[0029] S300: Conduct internal structural component phase analysis on each type of filling mineral, and determine the diagenetic evolution process of this type of filling mineral based on the analysis results.

[0030] Specifically, the internal structural component phase analysis of each type of filling mineral can be performed using an electron probe combined with a cathode luminescence method.

[0031] Determining the diagenetic evolution process of this type of filling mineral based on the analysis results may include: determining the internal structure and micro-region fluid type of this type of filling mineral based on the analysis results, wherein the internal structure includes a ring-generation structure; dividing the diagenetic stages of this type of filling mineral based on the ring-generation structure and micro-region fluid type of this type of filling mineral, thereby determining the diagenetic evolution process of this type of filling mineral.

[0032] As another example, after performing internal structural component phase analysis on each type of filling mineral, the method may also include the steps of: redetermining the mineral type of the filling mineral according to the analysis results; and determining the diagenetic evolution process of this type of filling mineral based on the redetermined mineral type according to the analysis results.

[0033] Through the method of the present invention, for reservoirs that have undergone complex and multi-type fluid dissolution and transformation and have the characteristics of multiple reservoir types and multiple pore fillings, their internal ring-generation structure can be analyzed, and the micro-region fluid type of the filling minerals in the reservoir during the dissolution and transformation process can be accurately traced and identified, thereby determining the diagenetic evolution process of the filling minerals in the reservoir.

[0034] Embodiment 2

[0035] This embodiment provides a specific embodiment of an in-situ micro-area fluid tracing method, and the method of this embodiment is applied to carbonate reservoirs. Figure 2 The flowchart is a method for in-situ micro-area fluid tracing according to a specific embodiment of the present application.

[0036] In this embodiment, by conducting systematic petrological and geochemical analysis on different types of carbonate reservoirs, using various experimental analysis techniques such as electron probe and cathode luminescence, the mineral types and generational relationships of the filling minerals in the carbonate reservoirs are systematically analyzed, and the crystal structure of the matrix / cement is analyzed. On this basis, combined with other analyses, the micro-region fluids in the carbonate rocks are effectively identified, and a tracing method for in situ micro-region fluids based on the mineral composition structure is formed.

[0037] The main steps of the method of this embodiment are as follows:

[0038] Step 1: Determine the types of minerals filling different types of reservoirs.

[0039] In this step, first, the morphological characteristics of the filling minerals are obtained through rock hand specimen observation, microscope observation, scanning electron microscope observation and other means.

[0040] Secondly, the main element composition of the matrix and cement (filling) in different types of reservoirs is systematically analyzed by combining cathode luminescence with electron probe technology to clarify the mineralogy and element characteristics of different types of filling minerals. The mineral type of the filling mineral is determined by combining the morphological characteristics and element characteristics of the filling mineral.

[0041] In addition, inclusion analysis can be performed on the filling minerals to determine the phase composition of the filling minerals, and transmission electron microscopy observation can be performed on the filling minerals to determine the crystal structure type of the filling minerals. The mineral type of the filling minerals can be determined based on the morphological characteristics and elemental characteristics of the filling minerals and further combined with the phase composition and crystal structure type of the filling minerals.

[0042] Step 2: Determine the internal structure and generational relationship of different types of reservoir mineral components.

[0043] In this step, for each type of filling mineral, the internal structure component phase analysis is carried out using electron probe composition combined with cathode luminescence to clarify the elemental composition characteristics and ring structure of each type of filling mineral, and the formation and evolution process of this type of filling mineral is determined based on the elemental composition characteristics and ring structure of the filling mineral.

[0044] In addition, the mineral type of the filling mineral can be accurately determined according to the elemental composition characteristics, thereby reversely verifying whether the filling mineral type determined in the first step is correct. It is also possible to reversely verify whether the mineral type of the filling mineral determined in the first step is correct according to the internal structure of the determined filling mineral. When the mineral type of the filling mineral determined in the first step is incorrect, the formation and evolution process of the filling mineral is determined based on the re-determined filling mineral type.

[0045] Step 3: For each type of filling mineral, repeat the above steps 1 and 2 to determine the diagenetic evolution process of all filling minerals in each carbonate reservoir.

[0046] Thus, this embodiment provides a fluid geochemical identification method based on the internal structure constraints of reservoir minerals.

[0047] Through the method of the present invention, for carbonate reservoirs with multiple reservoir types and multiple pore fillings formed after undergoing complex and multi-type fluid dissolution and transformation, its internal ring structure can be analyzed, and the micro-region fluid type in the dissolution and transformation process can be accurately traced and identified, thereby determining the diagenetic evolution process of the filling minerals in the carbonate reservoir. The method of this embodiment provides an effective research method for the research work on the oil and gas accumulation mechanism of carbonate reservoirs in sedimentary basins.

[0048] Embodiment 3

[0049] This embodiment provides a specific embodiment of an in-situ micro-area tracing method applied to a carbonate reservoir.

[0050] This implementation example is briefly described as follows:

[0051] Step 1: Observe the rock hand specimens and preliminarily determine the morphological characteristics of the hydrothermal dolomite using a polarizing microscope.

[0052] Step 2: Through the use of electron probe and fluid inclusion thermometer and other technical means, the major and / or trace elements of the matrix, cement and other filling materials in the hydrothermal dolomite are systematically analyzed by geochemical and inclusion analysis to clarify the mineralogical element characteristics (as shown in Table 1) and phase composition of the hydrothermal dolomite, so as to determine the mineral types contained in the hydrothermal dolomite. Among them, the positions 1, 2, 3 and 4 on the hydrothermal dolomite are as follows: Figure 3 shown.

[0053] Table 1 Electron probe mineral element characteristics and type analysis of carbonate reservoir samples in a certain area

[0054]

[0055] Step 3: For each type of mineral, conduct internal structural component phase analysis of hydrothermal dolomite using electron probe composition phase analysis in combination with cathodoluminescence analysis to determine the internal structure and micro-region fluid type of hydrothermal dolomite, divide the minerals into diagenetic stages based on the internal structure, and then determine the fluid diagenetic evolution process.

[0056] Thus, the diagenetic evolution process of each type of mineral in hydrothermal dolomite has been determined.

[0057] Embodiment 4

[0058] An in-situ micro-area fluid tracing device comprises: a data acquisition module for acquiring the element types contained in the filling minerals in the target reservoir and the content of each element; a type determination module for predicting at least one mineral type contained in the filling minerals according to the element types and the content of each element in combination with the morphological characteristics of the filling minerals; and an evolution analysis module for performing internal structural component phase analysis on each type of filling mineral and determining the diagenetic evolution process of the filling mineral of this type according to the analysis results.

[0059] In this embodiment, the in-situ micro-region fluid tracing device may further include: a processor and a memory, wherein the processor is used to execute the following program modules stored in the memory: a data acquisition module, a type determination module, and an evolution analysis module, so as to perform the following steps of the in-situ micro-region fluid tracing method:

[0060] Obtain the types of elements contained in the filling minerals in the target reservoir and the content of each element; predict at least one mineral type contained in the filling mineral based on the types of elements and the content of each element in combination with the morphological characteristics of the filling mineral; perform internal structural component phase analysis on each type of filling mineral, and determine the diagenetic evolution process of this type of filling mineral based on the analysis results.

[0061] In one embodiment, obtaining the types of elements contained in the filling minerals in the target reservoir and the content of each element includes: determining the types of elements contained in the filling minerals in the target reservoir and the content of each element using an elemental geochemical analysis method.

[0062] In one embodiment, performing internal structural component phase analysis on each type of filling mineral includes: performing internal structural component phase analysis on each type of filling mineral using an electron probe combined with a cathode luminescence method.

[0063] In one embodiment, the diagenetic evolution process of this type of filling mineral is determined based on the analysis results, including: determining the internal structure and micro-region fluid type of this type of filling mineral based on the analysis results, wherein the internal structure includes a ring-generation structure; dividing the diagenetic periods of this type of filling mineral according to the ring-generation structure and micro-region fluid type of this type of filling mineral, thereby determining the diagenetic evolution process of this type of filling mineral.

[0064] In one embodiment, before predicting at least one mineral type contained in the filling mineral, the method also includes the steps of: obtaining the crystal structure type and phase composition of the filling mineral in the target reservoir; predicting at least one mineral type contained in the filling mineral based on the type of elements and the content of each element, combined with the morphological characteristics of the filling mineral, including: predicting at least one mineral type contained in the filling mineral based on the type of elements and the content of each element, combined with the morphological characteristics, crystal structure type and phase composition of the filling mineral.

[0065] In one embodiment, the crystal structure type of the filling minerals in the target reservoir is obtained by using a transmission electron microscope observation method; and the phase composition of the filling minerals in the target reservoir is obtained by using an inclusion analysis method.

[0066] In one embodiment, after performing internal structural component phase analysis on each type of filling mineral, the method further includes the steps of: redetermining the mineral type of the filling mineral according to the analysis results; and determining the diagenetic evolution process of this type of filling mineral based on the redetermined mineral type according to the analysis results.

[0067] The processor can be implemented as a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this specification.

[0068] The memory can be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc. The memory can store operating systems and other application programs. When the technical solutions provided in the embodiments of this specification are implemented by software or firmware, the relevant program codes are stored in the memory and called and executed by the processor.

[0069] In addition, the device may also include other components necessary for normal operation. It can be understood by those skilled in the art that the above device may only include components necessary for implementing the embodiments of the present specification, and need not include all components shown in the figure.

[0070] Embodiment 5

[0071] This embodiment provides a storage medium storing a computer program. When the computer program is executed by a processor, the steps of the in-situ micro-area fluid tracing method described above are implemented:

[0072] An in-situ micro-area fluid tracing method comprises the following steps: obtaining the element types contained in the filling minerals in the target reservoir and the content of each element; predicting at least one mineral type contained in the filling minerals according to the element types and the content of each element in combination with the morphological characteristics of the filling minerals; performing internal structural component phase analysis on each type of filling mineral, and determining the diagenetic evolution process of the filling mineral of this type according to the analysis results.

[0073] In one embodiment, obtaining the types of elements contained in the filling minerals in the target reservoir and the content of each element includes: determining the types of elements contained in the filling minerals in the target reservoir and the content of each element using an elemental geochemical analysis method.

[0074] In one embodiment, performing internal structural component phase analysis on each type of filling mineral includes: performing internal structural component phase analysis on each type of filling mineral using an electron probe combined with a cathode luminescence method.

[0075] In one embodiment, the diagenetic evolution process of this type of filling mineral is determined based on the analysis results, including: determining the internal structure and micro-region fluid type of this type of filling mineral based on the analysis results, wherein the internal structure includes a ring-generation structure; dividing the diagenetic periods of this type of filling mineral according to the ring-generation structure and micro-region fluid type of this type of filling mineral, thereby determining the diagenetic evolution process of this type of filling mineral.

[0076] In one embodiment, before predicting at least one mineral type contained in the filling mineral, the method also includes the steps of: obtaining the crystal structure type and phase composition of the filling mineral in the target reservoir; predicting at least one mineral type contained in the filling mineral based on the type of elements and the content of each element, combined with the morphological characteristics of the filling mineral, including: predicting at least one mineral type contained in the filling mineral based on the type of elements and the content of each element, combined with the morphological characteristics, crystal structure type and phase composition of the filling mineral.

[0077] In one embodiment, the crystal structure type of the filling minerals in the target reservoir is obtained by using a transmission electron microscope observation method; and the phase composition of the filling minerals in the target reservoir is obtained by using an inclusion analysis method.

[0078] In one embodiment, after performing internal structural component phase analysis on each type of filling mineral, the method further includes the steps of: redetermining the mineral type of the filling mineral according to the analysis results; and determining the diagenetic evolution process of this type of filling mineral based on the redetermined mineral type according to the analysis results.

[0079] Those skilled in the art will appreciate that the embodiments of the present invention may be provided as methods or computer program products. Therefore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0080] The present invention is described with reference to flowcharts of methods and computer program products according to embodiments of the present invention. It should be understood that each process in the flowchart and the combination of processes in the flowchart can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart. Figure 1 A device that specifies functions in a process or multiple processes.

[0081] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A function specified in a process or multiple processes.

[0082] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 The steps of a specified function in a process or multiple processes.

[0083] Storage media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer-readable instructions, data structures, modules of programs or other data. Examples of storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission medium that can be used to store information that can be accessed by a computing device.

[0084] Embodiment 6

[0085] This embodiment provides a computer device, including a processor and a storage medium storing program code, wherein when the program code is executed by the processor, the steps of the in-situ micro-area fluid tracing method described above are implemented:

[0086] An in-situ micro-area fluid tracing method comprises the following steps: obtaining the element types contained in the filling minerals in the target reservoir and the content of each element; predicting at least one mineral type contained in the filling minerals according to the element types and the content of each element in combination with the morphological characteristics of the filling minerals; performing internal structural component phase analysis on each type of filling mineral, and determining the diagenetic evolution process of the filling mineral of this type according to the analysis results.

[0087] In one embodiment, obtaining the types of elements contained in the filling minerals in the target reservoir and the content of each element includes: determining the types of elements contained in the filling minerals in the target reservoir and the content of each element using an elemental geochemical analysis method.

[0088] In one embodiment, performing internal structural component phase analysis on each type of filling mineral includes: performing internal structural component phase analysis on each type of filling mineral using an electron probe combined with a cathode luminescence method.

[0089] In one embodiment, the diagenetic evolution process of this type of filling mineral is determined based on the analysis results, including: determining the internal structure and micro-region fluid type of this type of filling mineral based on the analysis results, wherein the internal structure includes a ring-generation structure; dividing the diagenetic periods of this type of filling mineral according to the ring-generation structure and micro-region fluid type of this type of filling mineral, thereby determining the diagenetic evolution process of this type of filling mineral.

[0090] In one embodiment, before predicting at least one mineral type contained in the filling mineral, the method also includes the steps of: obtaining the crystal structure type and phase composition of the filling mineral in the target reservoir; predicting at least one mineral type contained in the filling mineral based on the type of elements and the content of each element, combined with the morphological characteristics of the filling mineral, including: predicting at least one mineral type contained in the filling mineral based on the type of elements and the content of each element, combined with the morphological characteristics, crystal structure type and phase composition of the filling mineral.

[0091] In one embodiment, the crystal structure type of the filling minerals in the target reservoir is obtained by using a transmission electron microscope observation method; and the phase composition of the filling minerals in the target reservoir is obtained by using an inclusion analysis method.

[0092] In one embodiment, after performing internal structural component phase analysis on each type of filling mineral, the method further includes the steps of: redetermining the mineral type of the filling mineral according to the analysis results; and determining the diagenetic evolution process of this type of filling mineral based on the redetermined mineral type according to the analysis results.

[0093] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" refers to at least two.

[0094] Any process or method description in the flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes additional implementations, in which the order shown or discussed may not be followed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present invention belong.

[0095] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0096] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0097] In addition, each functional unit in each embodiment of the present invention may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0098] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0099] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0100] Although the embodiments disclosed in the present invention are as above, the contents described are only embodiments adopted for facilitating the understanding of the present invention and are not intended to limit the present invention. Any technician in the technical field to which the present invention belongs can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in the present invention, but the protection scope of the present invention shall still be subject to the scope defined in the attached claims.

Claims

1. An in-situ micro-region fluid tracing method, characterized in that: The following steps are involved: Obtain the types of elements contained in the filling minerals in the target reservoir and the content of each element; Predicting at least one mineral type contained in the filling mineral according to the element types and the content of each element and the morphological characteristics of the filling mineral; Conduct internal structural component phase analysis on each type of filling mineral, and determine the diagenetic evolution process of this type of filling mineral based on the analysis results; Among them, the internal structure and composition phase analysis of each type of filling mineral is carried out, including: The internal structure and composition phase analysis of each type of filling mineral was carried out using electron probe combined with cathodoluminescence method; According to the analysis results, the diagenetic evolution process of this type of filling mineral is determined, including: Determine the internal structure and micro-region fluid type of the filling mineral according to the analysis results, wherein the internal structure includes a ring-generation structure; According to the ring structure and micro-region fluid type of this type of filling mineral, the diagenetic period of this type of filling mineral is divided, so as to determine the diagenetic evolution process of this type of filling mineral; After performing internal structural component phase analysis on each type of filling mineral, the method further comprises the steps of: Re-determine the mineral type of the filling mineral according to the analysis result; Based on the re-determined mineral type, the diagenetic evolution process of this type of filling mineral is determined according to the analysis results.

2. The in-situ micro-region fluid tracing method according to claim 1, characterized in that: Obtain the types of elements contained in the filling minerals in the target reservoir and the content of each element, including: The element geochemical analysis method is used to determine the types of elements contained in the filling minerals in the target reservoir and the content of each element.

3. The in-situ micro-region fluid tracing method according to claim 1, characterized in that: Before predicting at least one mineral type contained in the filling mineral, the method further comprises the steps of: Obtain the crystal structure type and phase composition of the filling minerals in the target reservoir; According to the element types and the content of each element, combined with the morphological characteristics of the filling mineral, at least one mineral type contained in the filling mineral is predicted, including: According to the types of elements and the content of each element, combined with the morphological characteristics, crystal structure type and phase composition of the filling mineral, at least one mineral type contained in the filling mineral is predicted.

4. The in-situ micro-region fluid tracing method according to claim 3, characterized in that: The crystal structure type of the filling minerals in the target reservoir is obtained by using a transmission electron microscope observation method; The phase composition of the filling minerals in the target reservoir is obtained by using inclusion analysis method.

5. An in-situ micro-region fluid tracing device, characterized in that: include: A data acquisition module is used to obtain the types of elements contained in the filling minerals in the target reservoir and the content of each element; A type determination module, used to predict at least one mineral type contained in the filling mineral according to the element type and the content of each element, combined with the morphological characteristics of the filling mineral; The evolution analysis module is used to analyze the internal structure and composition phase of each type of filling mineral and determine the diagenetic evolution process of this type of filling mineral based on the analysis results; The evolution analysis module is used to analyze the internal structure and component phase of each type of filling mineral by using an electron probe combined with cathode luminescence; determine the internal structure and micro-region fluid type of the filling mineral of this type according to the analysis results, wherein the internal structure includes a ring-generation structure; divide the diagenetic period of the filling mineral of this type according to the ring-generation structure and micro-region fluid type of the filling mineral of this type, thereby determining the diagenetic evolution process of the filling mineral of this type; After performing internal structural component phase analysis on each type of filling mineral, the type determination module is further used to re-determine the mineral type of the filling mineral according to the analysis result; The evolution analysis module is also used to determine the diagenetic evolution process of the filling mineral of this type based on the re-determined mineral type according to the analysis results.

6. A storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the in-situ micro-area fluid tracing method according to any one of claims 1 to 4 are implemented.

7. A computer device comprising a processor and a storage medium storing program codes, wherein when the program codes are executed by the processor, the steps of the in-situ micro-area fluid tracing method according to any one of claims 1 to 4 are implemented.

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