Method for determining reservoir heterogeneity and related equipment

Abstract

The present application relates to the technical field of oil reservoir heterogeneity judgment, and more particularly to an oil reservoir heterogeneity determination method and related equipment, wherein the oil reservoir heterogeneity determination method comprises: obtaining production and absorption data of each well of an oil reservoir and perforation data of each layer section of the oil reservoir; obtaining a non-heterogeneity interval chart of the oil reservoir according to the production and absorption data of each well and the perforation data of each layer section; and determining a non-heterogeneity level of a single well of the oil reservoir according to the non-heterogeneity interval chart. The above method is used to accurately determine the non-heterogeneity level of a single well, adjust the profile control, water plugging and reperforation operation parameters of the single well according to the non-heterogeneity level of the single well, and is beneficial to reducing invalid circulating water injection of an oilfield, improving water injection efficiency and water flooding development effect of the oilfield.

Description

Technical Field

[0001] This specification relates to the technical field of reservoir heterogeneity assessment, and more specifically, to a method and related equipment for determining reservoir heterogeneity. Background Technology

[0002] Reservoir heterogeneity refers to the non-uniform variations in the spatial and temporal distribution and internal properties of oil and gas reservoirs due to the alteration of sedimentary environment, diagenesis, and tectonic activity during their formation. These heterogeneities manifest in the inhomogeneity of internal properties and spatial distribution, such as reservoir lithology, physical properties, hydrocarbon content, and microstructure. Reservoir heterogeneity affects the effectiveness of waterflooding development, especially in heterogeneous oil and gas reservoirs developed with long-term water injection. Water channeling easily occurs, forming dominant water flow channels. Water tends to enter wells along these channels, reducing the waterflood sweep efficiency, leading to rapid water flooding, a rapid increase in water cut, residual oil formation in the reservoir, and a decrease in the ultimate recovery rate of the oilfield.

[0003] Therefore, it is necessary to propose a method for determining reservoir heterogeneity in order to at least partially solve the problems existing in the prior art. Summary of the Invention

[0004] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. The summary section of this invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] To at least partially solve the above problems, in a first aspect, the present invention proposes a method for determining reservoir heterogeneity, the method comprising:

[0006] Acquire production and absorption data for each well in the reservoir and perforation data for each layer of the reservoir;

[0007] The heterogeneity interval chart of the reservoir is obtained based on the production and absorption data of each well and the perforation data of each layer.

[0008] The heterogeneity level of a single well in the reservoir is determined based on the heterogeneity interval chart.

[0009] Optionally, the step of obtaining the heterogeneity interval chart of the reservoir based on the production and absorption data of each well and the perforation data of each layer includes:

[0010] The production intensity of each well in the reservoir is obtained based on the production and absorption data of each well and the perforation data of each layer.

[0011] The heterogeneity coefficient of the production and absorption intensity of each well in the reservoir is obtained based on the production and absorption intensity of each well in the reservoir.

[0012] The heterogeneity coefficient of production and absorption of the reservoir for each well is obtained based on the production and absorption data of each well.

[0013] The heterogeneity interval chart of the reservoir is obtained based on the heterogeneity coefficient of production and absorption intensity of each well and the heterogeneity coefficient of production and absorption amount of each well.

[0014] Optionally, the step of obtaining the heterogeneity coefficient of the production and absorption intensity of each well in the reservoir based on the production and absorption intensity of each well in the reservoir includes:

[0015] Obtain the production intensity of each well in the reservoir and the maximum production intensity in the corresponding well interval;

[0016] The heterogeneity coefficient of the production and absorption intensity of each well in the reservoir is obtained based on the production intensity of each well and the maximum production intensity in the corresponding well interval.

[0017] Optionally, the step of obtaining the heterogeneity coefficient of the production and absorption of the reservoir for each well based on the production and absorption data of each well includes:

[0018] Obtain the production rate of each well in the reservoir and the maximum production rate in the corresponding well interval;

[0019] The heterogeneity coefficient of production and absorption of each well in the reservoir is obtained based on the production volume of each well and the maximum production volume in the corresponding well interval.

[0020] Optionally, the step of obtaining the heterogeneity interval chart of the reservoir based on the production and absorption data of each well and the perforation data of each layer includes:

[0021] The heterogeneity coefficient of production and absorption intensity is used as the vertical axis of the graph, and the heterogeneity coefficient of production and absorption amount is used as the horizontal axis of the graph.

[0022] Based on the heterogeneity coefficient of production absorption intensity and the heterogeneity coefficient of production absorption amount for each well in the reservoir, plot the points corresponding to the heterogeneity of each well in the reservoir in the chart.

[0023] Based on the points corresponding to the heterogeneity of each well in the reservoir, the heterogeneity intervals of the chart are divided.

[0024] Optionally, the heterogeneity intervals of the chart include:

[0025] Homogeneous region, weakly heterogeneous region, moderately heterogeneous region, and strongly heterogeneous region.

[0026] Optionally, the step of determining the heterogeneity level of a single well in the reservoir based on the heterogeneity interval chart includes:

[0027] Obtain the heterogeneity coefficient of the production absorption rate and the heterogeneity coefficient of the production absorption intensity of the single well;

[0028] Based on the heterogeneity coefficient of the production and absorption intensity and the heterogeneity coefficient of the production and absorption amount of the single well, the points corresponding to the heterogeneity of the single well are plotted in the chart.

[0029] The heterogeneity level of the single well is determined based on the location of the point in the interval shown in the chart.

[0030] Secondly, the present invention also proposes an apparatus for determining reservoir heterogeneity, comprising: an acquisition unit for acquiring production and absorption data of each well in the reservoir and perforation data of each layer of the reservoir;

[0031] Calculation unit: used to obtain a heterogeneity interval chart of the reservoir based on the production and absorption data of each well and the perforation data of each layer;

[0032] Judgment Unit: Determines the heterogeneity level of a single well in the reservoir based on the heterogeneity interval chart.

[0033] Thirdly, an electronic device includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program stored in the memory to implement the steps of the reservoir heterogeneity determination method as described in any of the first aspects above.

[0034] Fourthly, the present invention also proposes a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the reservoir heterogeneity determination method of any of the above claims in the first aspect.

[0035] Compared with the prior art, the present invention has at least the following beneficial effects: The reservoir heterogeneity determination method provided in this application obtains the production and absorption data of each well in the reservoir and the perforation data of each layer in the reservoir, obtains the heterogeneity interval chart of the reservoir based on the production and absorption data of each well and the perforation data of each layer, determines the heterogeneity level of a single well in the reservoir based on the heterogeneity interval chart, and determines the heterogeneity level of a single well accurately. Adjusting the profile control, water shut-off, and perforation repair operation parameters of a single well based on the heterogeneity level of the single well is beneficial to reducing ineffective circulating water injection in the oilfield, improving water injection efficiency and the water drive development effect of the oilfield.

[0036] The method and related equipment for determining reservoir heterogeneity of the present invention, as well as other advantages, objectives and features of the present invention, will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of the present invention. Attached Figure Description

[0037] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit this specification. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0038] Figure 1 A flowchart illustrating a method for determining reservoir heterogeneity provided for the implementation of this application;

[0039] Figure 2 A schematic diagram illustrating the establishment of a reservoir heterogeneity interval chart for the implementation of this application;

[0040] Figure 3 A schematic diagram of a reservoir heterogeneity interval chart provided for the implementation of this application;

[0041] Figure 4 A schematic diagram of a reservoir heterogeneity determination device provided for the implementation of this application;

[0042] Figure 5 This is a schematic diagram of an embodiment of an electronic device provided in this application. Detailed Implementation

[0043] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus. The technical solutions of the embodiments of this application will now be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them.

[0044] In some examples, such as Figure 1As shown, a method for determining reservoir heterogeneity according to the first aspect of the embodiments of this application includes:

[0045] Step 101: Obtain the production and absorption data for each well in the reservoir and the perforation data for each layer of the above reservoir;

[0046] Step 102: Obtain the heterogeneity interval chart of the above reservoir based on the production and absorption data of each well and the perforation data of each layer.

[0047] Step 103: Determine the heterogeneity level of a single well in the above reservoir based on the heterogeneity interval chart above.

[0048] It is understood that "each well session" refers to a single data acquisition operation for a single well within a given time period. This involves acquiring the production and water absorption volumes of each well within a specific timeframe, as well as the perforation data for each layer of the reservoir. The perforation data includes the top and bottom depths of the perforated section and the perforation depth itself. By using the collected production and water absorption data from each well session and the perforation data for each layer, cluster analysis is employed to create a heterogeneity interval chart of the reservoir. This chart delineates the heterogeneous intervals of the reservoir. Subsequently, only the production and water absorption data of individual wells within the reservoir and the perforation data for each layer of those wells need to be collected to determine the heterogeneity interval of each well, thus identifying its heterogeneity level. Accurate determination of the heterogeneity level using this method allows for adjustments to the profile control, water shut-off, and perforation repair parameters of individual wells. This helps reduce ineffective circulating water injection in the oilfield, improves water injection efficiency, and enhances the effectiveness of waterflooding development.

[0049] In some examples, the step of obtaining the heterogeneity interval chart of the reservoir based on the production and absorption data of each well and the perforation data of each layer includes: obtaining the production and absorption intensity of each well in the reservoir based on the production and absorption data of each well and the perforation data of each layer; obtaining the production and absorption intensity heterogeneity coefficient of each well in the reservoir based on the production and absorption intensity of each well; obtaining the production and absorption heterogeneity coefficient of each well in the reservoir based on the production and absorption data of each well; and obtaining the heterogeneity interval chart of the reservoir based on the production and absorption intensity heterogeneity coefficient of each well in the reservoir and the production and absorption heterogeneity coefficient of each well in the reservoir.

[0050] Specifically, a portion of the perforated sections is selected as test sections. For example, in a perforated section with a top depth of 832 meters, a bottom depth of 840 meters, and a thickness of 8 meters, a test section with a top depth of 832 meters, a bottom depth of 836 meters, and a thickness of 4 meters can be selected. The production-suction intensity of each well in the reservoir is calculated as the production-suction rate of that well divided by the thickness of the test section. The production-suction intensity heterogeneity coefficient of each well in the reservoir is obtained from the production-suction intensity, and the production-suction rate heterogeneity coefficient of each well in the reservoir is obtained from the production-suction rate. Using the production-suction rate heterogeneity coefficient and the production-suction intensity heterogeneity coefficient as the coordinate system for the reservoir heterogeneity interval chart, the collected production-suction intensity heterogeneity coefficient and production-suction rate heterogeneity coefficient for each well in the reservoir are substituted into the coordinate system, and the intervals of the reservoir heterogeneity interval chart are obtained through cluster analysis. The coordinate system of the heterogeneity interval chart established by this method can reflect the heterogeneity of a single well, making the judgment of the heterogeneity of a single well more accurate. Adjusting the profile control, water shut-off, and perforation parameters of a single well according to its heterogeneity level is beneficial to reducing ineffective circulating water injection in the oilfield and improving water injection efficiency and the water drive development effect of the oilfield.

[0051] In some examples, the step of obtaining the heterogeneity coefficient of the production and absorption intensity of each well in the reservoir based on the production and absorption intensity of each well in the reservoir includes: obtaining the production intensity of each well in the reservoir and the maximum production intensity in the corresponding well interval; and obtaining the heterogeneity coefficient of the production and absorption intensity of each well in the reservoir based on the production intensity of each well and the maximum production intensity in the corresponding well interval.

[0052] Specifically, to obtain the heterogeneity coefficient of production-absorption intensity for each well in an oil reservoir, it is necessary to collect the production intensity of a well and the maximum production intensity of multiple intervals within that well. The production intensity of a well is the average production intensity of all intervals within that well. The formula for calculating the heterogeneity coefficient of production-absorption intensity for each well in an oil reservoir is as follows:

[0053] The heterogeneity coefficient of production intensity for a certain well run = production intensity of that well run / maximum production intensity in that well run interval.

[0054] It is understandable that the production intensity heterogeneity coefficient ranges from 0 to 1. The production intensity heterogeneity coefficient can well reflect the strength of the heterogeneity of production capacity between the layers of a single well. The larger the production intensity heterogeneity coefficient, the weaker the heterogeneity of the single well, that is, the closer the production capacity values ​​of each layer of the single well are. The smaller the production intensity heterogeneity coefficient, the stronger the heterogeneity of the single well, that is, the greater the difference in production capacity values ​​of each layer of the single well.

[0055] In some examples, the step of obtaining the production-absorption heterogeneity coefficient of the reservoir for each well based on the production-absorption data of each well includes: obtaining the production volume of each well in the reservoir and the maximum production volume in the corresponding well interval; and obtaining the production-absorption heterogeneity coefficient of the reservoir for each well based on the production volume of each well and the maximum production volume in the corresponding well interval.

[0056] Specifically, to obtain the heterogeneity coefficient of production and absorption per well in an oil reservoir, it is necessary to collect the production volume of a single well and the maximum production volume of multiple intervals within that well. The production volume of a single well is the total production volume of all intervals within that well. The formula for calculating the heterogeneity coefficient of production and absorption per well in an oil reservoir is as follows:

[0057] The heterogeneity coefficient of production volume for a certain well run = maximum production volume in the interval of that well run / production volume of that well run.

[0058] It is understandable that the production heterogeneity coefficient ranges from 0 to 1. The production heterogeneity coefficient can well reflect the strength of the production heterogeneity between the layers in a single well. The smaller the production heterogeneity coefficient, the weaker the heterogeneity of the single well, that is, the closer the production contribution values ​​of each layer in the single well are. The larger the production heterogeneity coefficient, the stronger the heterogeneity of the single well, that is, the greater the difference in the production contribution values ​​of each layer in the single well, and the production of the single well is mainly contributed by a few layers.

[0059] In some examples, such as Figure 2 and Figure 3 As shown, the steps for obtaining the heterogeneity interval chart of the reservoir based on the production and absorption data of each well and the perforation data of each layer include: using the production and absorption intensity heterogeneity coefficient as the vertical axis of the chart and the production and absorption amount heterogeneity coefficient as the horizontal axis of the chart; plotting the points corresponding to the heterogeneity of each well in the reservoir in the chart based on the production and absorption intensity heterogeneity coefficient and the production and absorption amount heterogeneity coefficient of each well in the reservoir; and dividing the heterogeneity interval of the chart based on the points corresponding to the heterogeneity of each well in the reservoir.

[0060] Specifically, the heterogeneity coefficient of production and absorption intensity is used as the vertical axis of the chart, and the heterogeneity coefficient of production and absorption amount is used as the horizontal axis. The heterogeneity coefficients of production and absorption intensity and production and absorption amount for each well are plotted as point values ​​on the chart. Data from different wells in the reservoir are distinguished by shape and / or color, and the heterogeneity intervals of the chart are divided using cluster analysis. The horizontal and vertical axes of the heterogeneity interval chart established by this method can reflect the heterogeneity of individual wells, making the judgment of individual well heterogeneity more accurate. Adjusting the profile control, water shut-off, and perforation parameters of individual wells according to their heterogeneity levels helps reduce ineffective circulating water injection in the oilfield, improves water injection efficiency, and enhances the water drive development effect of the oilfield.

[0061] In some examples, such as Figure 3 As shown in the chart above, the heterogeneity intervals include: homogeneous region, weakly heterogeneous region, moderately heterogeneous region, and strongly heterogeneous region.

[0062] Specifically, by analyzing the distribution of the heterogeneity coefficients of production and absorption intensity and production and absorption amount of different wells in the reservoir, the chart is divided into four intervals: homogeneous zone, weakly heterogeneous zone, moderately heterogeneous zone and strongly heterogeneous zone.

[0063] In some examples, the step of determining the heterogeneity level of a single well in the reservoir based on the heterogeneity interval chart includes: obtaining the heterogeneity coefficient of the production and absorption of the single well and the heterogeneity coefficient of the production and absorption intensity of the single well; plotting the points corresponding to the heterogeneity of the single well in the chart based on the heterogeneity coefficient of the production and absorption intensity of the single well and the heterogeneity coefficient of the production and absorption of the single well; and determining the heterogeneity level of the single well based on the interval in the chart where the points are located.

[0064] Specifically, the steps for determining the heterogeneity level of a single well in an oil reservoir based on a heterogeneity interval chart are as follows: Obtain the heterogeneity coefficient of the single well's production-to-absorption ratio and the heterogeneity coefficient of its production-to-absorption intensity; represent the heterogeneity of the single well as points on the chart; use the production-to-absorption ratio heterogeneity coefficient as the x-axis of the point on the chart, and the production-to-absorption intensity heterogeneity coefficient as the y-axis of the point on the chart; and determine the heterogeneity level of the single well based on the region where the point is located on the chart.

[0065] In some examples, such as Figure 4 As shown in the figure, this application embodiment also provides a reservoir heterogeneity determination device, including:

[0066] Acquisition Unit 21: It can be used to acquire production and absorption data for each well in the reservoir and perforation data for each layer of the above-mentioned reservoir;

[0067] Calculation unit 22: can be used to obtain the heterogeneity interval chart of the above reservoir based on the production and absorption data of each well and the perforation data of each layer.

[0068] Judgment Unit 23: The heterogeneity level of a single well in the above reservoir can be determined based on the above heterogeneity interval chart.

[0069] In some examples, such as Figure 5 As shown, this application embodiment also provides an electronic device 300, including a memory 310, a processor 320, and a computer program 311 stored in the memory 320 and executable on the processor. When the processor 320 executes the computer program 311, it implements the steps of any of the above-described methods for determining reservoir heterogeneity.

[0070] Since the electronic device described in this embodiment is the device used to implement the reservoir heterogeneity determination device in the embodiments of this application, those skilled in the art can understand the specific implementation method and various variations of the electronic device in this embodiment based on the method described in the embodiments of this application. Therefore, how the electronic device implements the method in the embodiments of this application will not be described in detail here. Any device used by those skilled in the art to implement the method in the embodiments of this application is within the scope of protection of this application.

[0071] In practical implementation, when the computer program 311 is executed by the processor, it can achieve the following: Figure 1 Any of the corresponding implementation methods in the embodiments.

[0072] It should be noted that the descriptions of each embodiment in the above embodiments have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0073] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0074] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0075] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0076] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0077] This application also provides a computer program product, which includes computer software instructions that, when executed on a processing device, cause the processing device to perform actions such as... Figure 1 The process for determining reservoir heterogeneity in the corresponding embodiment.

[0078] A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state disk (SSD)).

[0079] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0080] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, or indirect coupling or communication connection between apparatuses or units, and may be electrical, mechanical, or other forms.

[0081] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0082] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0083] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0084] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A method for determining reservoir heterogeneity, characterized in that, include: Acquire production and absorption data for each well in the reservoir and perforation data for each layer of the reservoir; The reservoir's production and absorption data are obtained based on the production and absorption data of each well and the perforation data of each layer. Non-homogeneous interval chart; The production and absorption data for each well and the perforation data for each layer are used to obtain a heterogeneity interval chart of the reservoir, including: The production intensity of each well in the reservoir is obtained based on the production and absorption data of each well and the perforation data of each layer. The perforation data includes the top depth, bottom depth, and perforation depth of the perforation section; The heterogeneity coefficient of the production and absorption intensity of each well in the reservoir is obtained based on the production and absorption intensity of each well in the reservoir. The heterogeneity coefficient of production and absorption of the reservoir for each well is obtained based on the production and absorption data of each well. The heterogeneity interval chart of the reservoir is obtained based on the heterogeneity coefficient of production and absorption intensity of each well and the heterogeneity coefficient of production and absorption amount of each well. The heterogeneity level of a single well in the reservoir is determined based on the heterogeneity interval chart. The step of obtaining the heterogeneity coefficient of the production and absorption intensity of each well in the reservoir based on the production and absorption intensity of each well includes: Obtain the production intensity of each well in the reservoir and the maximum production intensity in the corresponding well interval; The heterogeneity coefficient of the production intensity of each well in the reservoir is obtained based on the production intensity of each well and the maximum production intensity in the corresponding well interval. Obtain the production rate of each well in the reservoir and the maximum production rate in the corresponding well interval; The heterogeneity coefficient of production and absorption of each well in the reservoir is obtained based on the production volume of each well and the maximum production volume in the corresponding well interval. Among them, a portion of the perforated sections are selected as test sections, and the production and absorption intensity of each well in the reservoir is calculated as the production and absorption rate of that well divided by the thickness of the test section.

2. The method for determining reservoir heterogeneity according to claim 1, characterized in that, The step of obtaining the heterogeneity interval chart of the reservoir based on the production and absorption data of each well and the perforation data of each layer includes: The heterogeneity coefficient of production and absorption intensity is used as the vertical axis of the graph, and the heterogeneity coefficient of production and absorption amount is used as the horizontal axis of the graph. Based on the heterogeneity coefficient of production absorption intensity and the heterogeneity coefficient of production absorption amount for each well in the reservoir, plot the points corresponding to the heterogeneity of each well in the reservoir in the chart. Based on the points corresponding to the heterogeneity of each well in the reservoir, the heterogeneity intervals of the chart are divided.

3. The method for determining reservoir heterogeneity according to claim 2, characterized in that, The heterogeneous intervals of the chart include: Homogeneous region, weakly heterogeneous region, moderately heterogeneous region, and strongly heterogeneous region.

4. The method for determining reservoir heterogeneity according to claim 2, characterized in that, The step of determining the heterogeneity level of a single well in the reservoir based on the heterogeneity interval chart includes: Obtain the heterogeneity coefficient of the production absorption rate and the heterogeneity coefficient of the production absorption intensity of the single well; Based on the heterogeneity coefficient of the production and absorption intensity and the heterogeneity coefficient of the production and absorption amount of the single well, the points corresponding to the heterogeneity of the single well are plotted in the chart. The heterogeneity level of the single well is determined based on the location of the point in the interval shown in the chart.

5. A device for determining reservoir heterogeneity, characterized in that, The method for determining reservoir heterogeneity according to any one of claims 1-4 includes: Acquisition unit: used to acquire production and absorption data for each well in the reservoir and perforation data for each layer of the reservoir; Calculation unit: used to obtain the reservoir's production and absorption data based on the production and absorption data of each well and the perforation data of each layer. Non-homogeneous interval chart; Judgment Unit: Determines the heterogeneity level of a single well in the reservoir based on the heterogeneity interval chart.

6. An electronic device, comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the processor, when executing the computer program stored in the memory, implements the steps of a method for determining reservoir heterogeneity as claimed in any one of claims 1 to 4.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by the processor, it implements a method for determining reservoir heterogeneity as described in any one of claims 1 to 4.

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