Three-dimensional grading characterization dominant channel method and device, medium and electronic equipment

Abstract

The invention discloses a three-dimensional hierarchical characterization dominant channel method and device, a medium and electronic equipment. The method comprises the following steps: determining geological features of a reservoir by acquiring geological information of the reservoir; according to the geologic features, dynamic production features of flowing units are obtained, so that dominant channel feature characterization indexes are obtained according to the dynamic production features, and the flowing units comprise water injection wells and oil production wells; the dominant channel characteristic characterization indexes comprise change forms of accumulated oil production and water content, accumulated water-oil ratio reversal time and water content rising types; according to the dominant channel characteristic characterization index, establishing a plane grading characterization dominant channel characteristic standard; and establishing an invalid cycle identification standard by combining a longitudinal grading characterization dominant channel characteristic standard and a plane grading characterization dominant channel characteristic standard, thereby realizing the three-dimensional grading characterization of the dominant channel. According to the technical scheme provided by the invention, the three-dimensional hierarchical representation of the dominant channels can be realized.

Description

Technical Field

[0001] The present application belongs to the technical field of hierarchical characterization of water flow dominant channels, and in particular, relates to a method, device, medium and electronic equipment for stereoscopic hierarchical characterization of dominant channels. Background Art

[0002] At present, my country's old oil fields with high water content and extra-high water content mainly develop continental sedimentary reservoirs, and the sedimentary types are mainly rivers, deltas and fan deltas, with the characteristics of "small sand body, high mud content, high underground crude oil viscosity, and strong heterogeneity", which determines that the domestic oil fields show the characteristics of fast water content rise in the medium and low water content stage and slow water content rise in the medium and high water content stage during water injection development. Most of the recoverable reserves must be produced in the high water content and extra-high water content stage. Therefore, the high water content and extra-high water content stage are still extremely important stages for my country's oil fields to improve water drive recovery.

[0003] When water is injected to develop a multi-layer sandstone heterogeneous oil field, due to the heterogeneity of the oil layer permeability in the vertical and horizontal directions, the injected water flows along the high permeability layer or high permeability area, while the medium and low permeability layers or medium and low permeability areas absorb very little water, thus causing conflicts between layers, in planes and within layers.

[0004] Under the long-term water injection and scouring of old sandstone oilfields, the fluids and rocks in the reservoirs have undergone certain changes. Due to geological and development factors, low-resistance liquid flow channels are formed locally in the formation. The injected water forms an obvious advantage flow along this channel, resulting in a large amount of invalid water circulation. Therefore, strengthening the analysis of the causes of reservoir water flow advantage channels, identification and prediction of water flow advantage channels is of great significance for the optimization design of water drive injection and production structure adjustment, stratified injection and production, deep adjustment and drive, etc., and can lay a solid foundation for the sustained stable production and efficient development of old oilfields in the high water cut period of water injection development.

[0005] Therefore, the present application provides a three-dimensional hierarchical characterization method for dominant channels to achieve the above requirements. Summary of the invention

[0006] Embodiments of the present application provide a method, device, medium, and electronic device for stereoscopically hierarchically characterizing dominant channels. The method can achieve stereoscopically hierarchical characterization of dominant channels.

[0007] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0008] According to a first aspect of an embodiment of the present application, a method for three-dimensionally graded characterization of dominant channels is provided, characterized in that the method comprises: determining the geological characteristics of a reservoir by acquiring geological information of the reservoir; acquiring the dynamic production characteristics of a flow unit according to the geological characteristics, thereby obtaining a dominant channel characteristic characterization index according to the dynamic production characteristics, wherein the flow unit comprises an injection well and an oil production well, and the dominant channel characteristic characterization index comprises the changing form of cumulative oil production and water content, the cumulative water-oil ratio reversal time and the water content increase type; establishing a plane graded characterization dominant channel characteristic standard according to the dominant channel characteristic characterization index; establishing an invalid cycle identification standard by combining the longitudinal graded characterization dominant channel characteristic standard and the plane graded characterization dominant channel characteristic standard, thereby realizing three-dimensional graded characterization of dominant channels.

[0009] In some embodiments of the present application, based on the aforementioned scheme, in the process of establishing a plane graded characterization of dominant channel characteristic standards, the method also includes: when the cumulative oil production of the oil well is 50% of the maximum oil production and the water cut of the oil well is greater than 95%, if the cumulative oil production and the water cut start at a high level and rise steadily, and the cumulative water-oil ratio reversal time changes with time and starts at a level greater than 1 and rises steadily, and the water cut increase type is a rapid breakthrough type, then the current dominant channel is defined as a plane first-level dominant channel.

[0010] In some embodiments of the present application, based on the aforementioned scheme, in the process of establishing a planar graded characterization of dominant channel characteristic standards, the method also includes: when the cumulative oil production of the oil well is 50% of the maximum oil production, and the water cut of the oil well is greater than 90%, and the water cut of the oil well is less than 95%, if the cumulative oil production and water cut start at a low level, increase suddenly and rise steadily, and the cumulative water-oil ratio reversal time starts at a level greater than 0.01, decreases gently and rises suddenly, and the water cut rise type is a steep step type, then the current dominant channel is defined as a planar secondary dominant channel.

[0011] In some embodiments of the present application, based on the aforementioned scheme, in the process of establishing a plane graded characterization of the dominant channel characteristic standard, the method also includes: when the cumulative oil production of the oil well is 50% of the maximum oil production, and the water cut of the oil well is greater than 80%, and the water cut of the oil well is less than 90%, if the cumulative oil production and water cut start at a low level and rise parabolically, and the cumulative water-oil ratio reversal time starts at less than 1, declines gently and rises sharply, and the water cut rise type is a steady climbing type, then the current dominant channel is defined as a plane level 3 dominant channel.

[0012] In some embodiments of the present application, based on the aforementioned scheme, in the process of establishing a planar graded characterization of dominant channel characteristic standards, the method also includes: when the cumulative oil production of the oil well is 50% of the maximum oil production and the water cut of the oil well is less than 80%, if the cumulative oil production and the water cut start at a low level and rise steadily, and the cumulative water-oil ratio reversal time starts at a level greater than 0.01 and rises steadily, and the water cut rise type is a slow and steady type, then the current dominant channel is defined as a planar fourth-level dominant channel.

[0013] In some embodiments of the present application, based on the aforementioned scheme, in the process of establishing a longitudinal graded standard for characterizing the characteristics of dominant channels, the method further includes: calculating the evaluation index limits by obtaining the water injection intensity, liquid production intensity, cumulative water injection volume per unit thickness, relative water absorption ratio, apparent water absorption index, water injection multiple, and water content of the flow unit; and establishing a longitudinal graded standard for characterizing the characteristics of dominant channels by combining the water content of the flow unit and the evaluation index limits.

[0014] In some embodiments of the present application, based on the aforementioned scheme, the water content of the flow unit is 95%-100%, or 90%-95%, or 80%-90%, or 0%-80%.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] This application is to accurately characterize the plane dominant channels and vertical dominant channels in the reservoir and control the invalid water circulation in the reservoir. By obtaining the geological information of the reservoir, the geological characteristics of the reservoir are determined, so as to obtain the dynamic production characteristics of the flow unit, and obtain the dominant channel characteristic characterization index based on the dynamic production characteristics. Among them, the flow unit includes water injection wells and oil production wells. The dominant channel characteristic characterization indicators include the changing form of cumulative oil production and water content, the cumulative water-oil ratio reversal time and the water content increase type.

[0017] According to the obtained dominant channel characteristic characterization index, the plane dominant channel in the reservoir is qualitatively and quantitatively characterized, so as to define the plane hierarchical characterization dominant channel characteristic standard. The plane hierarchical characterization dominant channel characteristic standard includes plane primary dominant channel, plane secondary dominant channel, plane tertiary dominant channel, and plane quaternary dominant channel.

[0018] At the same time, the characterization of the longitudinal dominant channel requires obtaining the water injection intensity, liquid production intensity, cumulative water injection per unit thickness, relative water absorption ratio, apparent water absorption index, water injection multiple, and water content of the flow unit, and calculating the evaluation index limit. Then, combined with the water content evaluation index limit of the flow unit, a longitudinal graded characterization of the dominant channel characteristic standard is established. The longitudinal graded characterization of the dominant channel characteristic standard includes a longitudinal primary dominant channel, a longitudinal secondary dominant channel, a longitudinal tertiary dominant channel, and a longitudinal quaternary dominant channel.

[0019] Therefore, according to the obtained plane graded characterization dominant channel characteristic standard and longitudinal graded characterization dominant channel characteristic standard, invalid cycle identification standard can be established, thereby realizing three-dimensional graded characterization of dominant channels.

[0020] Based on the above method, the three-dimensional hierarchical characterization method of dominant channels provided by the present invention can realize the three-dimensional hierarchical characterization of dominant channels, thereby providing technical guarantee for the precise control of invalid cycles.

[0021] According to a second aspect of an embodiment of the present application, a three-dimensional hierarchical characterization device for dominant channels is provided, characterized in that the device comprises: a determination unit for determining the geological characteristics of a reservoir by acquiring geological information of the reservoir; an acquisition unit for acquiring the dynamic production characteristics of a flow unit according to the geological characteristics, thereby obtaining a dominant channel characteristic characterization index according to the dynamic production characteristics, wherein the flow unit comprises an injection well and an oil production well, and the dominant channel characteristic characterization index comprises the variation form of cumulative oil production and water content, the cumulative water-oil ratio reversal time and the water content increase type; a construction unit for establishing a plane hierarchical characterization dominant channel characteristic standard according to the dominant channel characteristic characterization index; a characterization unit for establishing an invalid cycle identification standard by combining the longitudinal hierarchical characterization dominant channel characteristic standard and the plane hierarchical characterization dominant channel characteristic standard, thereby realizing a three-dimensional hierarchical characterization of the dominant channel.

[0022] According to a third aspect of an embodiment of the present application, a computer-readable storage medium is provided, characterized in that at least one program code is stored in the computer-readable storage medium, and the at least one program code is loaded and executed by a processor to implement the operations performed by the described method.

[0023] According to a fourth aspect of an embodiment of the present application, an electronic device is provided, characterized in that the electronic device includes one or more processors and one or more memories, at least one program code is stored in the one or more memories, and the at least one program code is loaded and executed by the one or more processors to implement the operations performed by the method.

[0024] The beneficial effects of each embodiment of the second to fourth aspects mentioned above can refer to the beneficial effects of the first aspect and each embodiment of the first aspect mentioned above, and will not be repeated here.

[0025] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0027] Figure 1 A flow chart showing a method for stereoscopic hierarchical characterization of dominant channels in an embodiment of the present application is shown;

[0028] Figure 2 A schematic diagram showing the hierarchical characterization of the development of advantageous channels in the plane injection and production directions in the embodiment of the present application is shown;

[0029] Figure 3 A schematic diagram showing the development of the dominant channel by graded characterization of the longitudinal injection and production direction in the embodiment of the present application is shown;

[0030] Figure 4 A schematic diagram of the structure of a three-dimensional hierarchical characterization advantage channel device in an embodiment of the present application is shown;

[0031] Figure 5 A schematic diagram of the structure of an electronic device in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0034] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0035] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0036] The following is a detailed description of this application:

[0037] Figure 1 The flowchart of the stereoscopic hierarchical characterization dominant channel method in the embodiment of the present application is shown. The stereoscopic hierarchical characterization dominant channel method can be executed by a device with a computing and processing function, such as a stereoscopic hierarchical characterization dominant channel device. Figure 1 As shown, the stereoscopic hierarchical characterization method for dominant channels at least includes steps 110 to 140, which are described in detail as follows:

[0038] Step 110, determining the geological characteristics of the reservoir by acquiring the geological information of the reservoir.

[0039] Step 120, according to the geological characteristics, the dynamic production characteristics of the flow unit are obtained, so as to obtain the dominant channel characteristic characterization index according to the dynamic production characteristics, the flow unit includes a water injection well and an oil production well, and the dominant channel characteristic characterization index includes the change form of the cumulative oil production and water content, the cumulative water-oil ratio reversal time and the water content increase type.

[0040] Step 130: establishing a plane graded dominant channel feature characterization standard according to the dominant channel feature characterization index.

[0041] Step 140, by combining the longitudinal hierarchical characterization dominant channel feature standard and the plane hierarchical characterization dominant channel feature standard, an invalid cycle identification standard is established, thereby achieving a three-dimensional hierarchical characterization of the dominant channel.

[0042] In this application, due to long-term water injection and scouring, the fluid and rock in the reservoir have undergone certain changes. At the same time, due to geological and development factors, low-resistance liquid flow channels are formed locally in the formation, and the injected water forms an obvious advantage flow along this channel, resulting in a large amount of invalid water circulation. The existence of invalid water circulation will cause inter-layer contradictions, plane contradictions and intra-layer contradictions in the reservoir, thereby affecting the production and recovery rate of the reservoir.

[0043] Therefore, in order to control the invalid water circulation in the reservoir, the development degree of the plane water flow dominant channel and the vertical water flow dominant channel in the water injection development block in the reservoir can be quantitatively characterized, so as to construct the invalid circulation identification standard. And according to the invalid circulation identification standard, the invalid circulation discrimination parameter limit is determined, so as to realize the effective identification of invalid circulation and the three-dimensional quantitative characterization of invalid circulation and invalid circulation, so as to provide technical guarantee for the precise control of invalid circulation.

[0044] Specifically, the geological characteristics of the reservoir are first determined by acquiring the geological information of the reservoir. Then, the dynamic production characteristics of the flow unit are obtained based on the geological characteristics of the reservoir. The flow unit includes a water injection well and an oil production well. The dynamic production characteristics of the flow unit include the water injection volume of the water injection well, and the liquid production and oil production of the oil production well. Based on the dynamic production characteristics of the flow unit, the dominant channel characteristic characterization index is obtained, wherein the dominant channel characteristic characterization index includes the change form of the cumulative oil production and water content, the cumulative water-oil ratio reversal time and the water content increase type.

[0045] In addition, before establishing the plane classification characterization standard of the dominant channel characteristics through the dominant channel characteristic characterization index, the dominant channel dynamic simulation analysis can be performed on the injection-production flow unit to determine the qualitative relationship between the water content and the water injection index. After analysis, the water injection multiple and water injection intensity at the small layer oil well end in the reservoir increase with the increase of water content. When the water content is greater than 80%, the increase in the water injection multiple and water injection intensity at the small layer oil well end becomes larger. The water injection intensity at the small layer oil well end is inversely proportional to the sweep coefficient, and the water content at the small layer oil well end is directly proportional to the sweep coefficient. In addition, it can be seen from the analysis results that after the high water content period, the water injection multiple and water injection intensity increase, and the sweep coefficient is small. The invalid water cycle shows the characteristics of small sweep coefficient, large water injection intensity, and large water injection multiple.

[0046] Based on the above-mentioned dominant channel characteristic characterization indexes and dominant channel dynamic simulation analysis, the plane classification characterization dominant channel characteristic standard of the reservoir can be determined. Figure 2, showing a schematic diagram of the development of the plane injection and production direction hierarchical characterization of the dominant channel in the embodiment of the present application. In the process of establishing the plane hierarchical characterization of the dominant channel characteristic standard, the plane hierarchical characterization of the dominant channel characteristic standard may include a plane primary dominant channel, a plane secondary dominant channel, a plane tertiary dominant channel, and a plane quaternary dominant channel, corresponding to Figure 2 a, b, c and d in the above example.

[0047] Furthermore, in the process of defining a planar primary dominant channel, the following steps may be included: when the cumulative oil production of the oil well is 50% of the maximum oil production and the water cut of the oil well is greater than 95%, if the cumulative oil production and the water cut start at a high level and rise steadily, and the cumulative water-oil ratio reversal time changes with time and starts at a level greater than 1 and rises steadily, and the water cut increase type is a rapid breakthrough type, then the current dominant channel is defined as a planar primary dominant channel.

[0048] Furthermore, in the process of defining a planar secondary dominant channel, the following steps may be included: when the cumulative oil production of the oil well is 50% of the maximum oil production, and the water cut of the oil well is greater than 90%, and the water cut of the oil well is less than 95%, if the cumulative oil production and the water cut start at a low level, increase suddenly and rise steadily, and the cumulative water-oil ratio reversal time starts at a level greater than 0.01, decreases gently and rises suddenly, and the water cut rise type is a steep step type, then the current dominant channel is defined as a planar secondary dominant channel.

[0049] Furthermore, in the process of defining a planar three-level dominant channel, the following steps may be included: when the cumulative oil production of the oil well is 50% of the maximum oil production, and the water cut of the oil well is greater than 80%, and the water cut of the oil well is less than 90%, if the cumulative oil production and water cut start at a low level and rise parabolically, and the cumulative water-oil ratio reversal time starts at less than 1, declines gently and rises sharply, and the water cut rise type is a steady climbing type, then the current dominant channel is defined as a planar three-level dominant channel.

[0050] Furthermore, in the process of defining a planar four-level dominant channel, the following steps may be included: when the cumulative oil production of the oil well is 50% of the maximum oil production and the water cut of the oil well is less than 80%, if the cumulative oil production and the water cut start at a low level and rise steadily, and the cumulative water-oil ratio reversal time starts at a level greater than 0.01 and rises steadily, and the water cut rise type is a slow and steady type, then the current dominant channel is defined as a planar four-level dominant channel.

[0051] After establishing the plane classification characteristic standard of the dominant channel, the evaluation index limit can be calculated by obtaining the water injection intensity, liquid production intensity, cumulative water injection volume per unit thickness, relative water absorption ratio, apparent water absorption index, water injection multiple, and water content of the flow unit. Then, the vertical classification characteristic standard of the dominant channel is established by combining the water content of the flow unit and the evaluation index limit. Figure 3 , showing a schematic diagram of the development of the longitudinal injection and production direction hierarchical characterization dominant channel in the embodiment of the present application. Among them, the longitudinal hierarchical characterization dominant channel characteristic standard can include a longitudinal primary dominant channel, a longitudinal secondary dominant channel, a longitudinal tertiary dominant channel, and a longitudinal quaternary dominant channel, corresponding to Figure 3 A, B, C and D in the above. The water content of the flow unit may include 95%-100%, or 90%-95%, or 80%-90%, or 0%-80%, 95%-100%, or 90%-95%, or 80%-90%, or 0%-80%.

[0052] For example, when the moisture content of the flow unit is greater than 95%, the current longitudinal dominant channel can be defined as a longitudinal primary dominant channel according to the calculated evaluation index limit.

[0053] For another example, when the water content of the flow unit is 90-95%, the current longitudinal dominant channel can be defined as a longitudinal secondary dominant channel according to the calculated evaluation index limit.

[0054] For another example, when the moisture content of the flow unit is 80-90%, the current longitudinal dominant channel can be defined as a longitudinal tertiary dominant channel according to the calculated evaluation index limit.

[0055] For another example, when the moisture content of the flow unit is less than 80%, the current longitudinal dominant channel can be defined as a longitudinal fourth-level dominant channel according to the calculated evaluation index limit.

[0056] By integrating the vertical classification characterization of the dominant channel characteristic standards and the plane classification characterization of the dominant channel characteristic standards, the invalid circulation identification standards are established, thereby realizing the three-dimensional classification characterization of the dominant channel. At the same time, based on the invalid circulation identification standards, the identification mode of step-by-step characterization, hierarchical division, and classification calibration of oil and water well calibration can be formed from qualitative analysis to quantitative characterization, from level screening to small layer selection, and then to form an invalid water circulation identification system suitable for the water injection development of this oil field, and can provide technical guarantees for the precise management of invalid circulation.

[0057] Based on the same inventive concept, the present application also provides a three-dimensional hierarchical characterization advantage channel device, referring to Figure 4, showing a schematic diagram of the structure of a three-dimensional hierarchical characterization device for dominant channels in an embodiment of the present application. The three-dimensional hierarchical characterization device for dominant channels 400 includes: a determination unit 401, used to determine the geological characteristics of the reservoir by acquiring the geological information of the reservoir; an acquisition unit 402, used to acquire the dynamic production characteristics of the flow unit according to the geological characteristics, so as to obtain the dominant channel characteristic characterization index according to the dynamic production characteristics, the flow unit includes a water injection well and an oil production well, and the dominant channel characteristic characterization index includes the change form of the cumulative oil production and the water content, the cumulative water-oil ratio reversal time and the water content increase type; a construction unit 403, used to establish a plane hierarchical characterization dominant channel characteristic standard according to the dominant channel characteristic characterization index; a characterization unit 404, used to establish an invalid cycle identification standard by combining the longitudinal hierarchical characterization dominant channel characteristic standard and the plane hierarchical characterization dominant channel characteristic standard, so as to realize the three-dimensional hierarchical characterization of the dominant channel.

[0058] For details not disclosed in the embodiments of the device of the present application, please refer to the embodiments of the above method of the present application.

[0059] Based on the same inventive concept, the present application may also provide a computer-readable storage medium, characterized in that at least one program code is stored in the computer-readable storage medium, and the at least one program code is loaded and executed by a processor to implement the operations performed by the method described.

[0060] Based on the same inventive concept, the present application also provides an electronic device, referring to Figure 5 , Figure 5 A schematic diagram of the structure of an electronic device in an embodiment of the present application is shown.

[0061] The electronic device includes one or more memories 504, one or more processors 502, and at least one computer program (program code) stored in the memory 504 and executable on the processor 502. When the processor 502 executes the computer program, the method described above is implemented.

[0062] Among them, Figure 5In the embodiment of the present invention, a bus architecture (represented by bus 500) is shown, which may include any number of interconnected buses and bridges, and bus 500 links various circuits including one or more processors represented by processor 502 and memory represented by memory 504. Bus 500 may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. Bus interface 505 provides an interface between bus 500 and receiver 501 and transmitter 503. Receiver 501 and transmitter 503 may be the same element, namely a transceiver, providing a unit for communicating with various other devices over a transmission medium. Processor 502 is responsible for managing bus 500 and general processing, while memory 504 may be used to store data used by processor 502 when performing operations.

[0063] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored as one or more instructions or codes on a computer-readable medium or transmitted via a computer-readable medium. Other examples and implementations are within the scope and spirit of the present application and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hard wiring, or a combination of any of these. In addition, each functional unit may be integrated into a processing unit, each unit may exist physically separately, or two or more units may be integrated into one unit.

[0064] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0065] The units described as separate components may or may not be physically separated, and the components of the control device may or may not be physical units, that is, they may be located in one place or distributed in multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0066] If the integrated unit is implemented in the form of 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 the present 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, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk and other media that can store program codes.

[0067] The above description is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A three-dimensional hierarchical characterization method for dominant channels, characterized in that: The method comprises: Determine the geological characteristics of the reservoir by obtaining the geological information of the reservoir; According to the geological characteristics, the dynamic production characteristics of the flow unit are obtained, so as to obtain the dominant channel characteristic characterization index according to the dynamic production characteristics, the flow unit includes a water injection well and an oil production well, and the dominant channel characteristic characterization index includes the change form of the cumulative oil production and the water content, the cumulative water-oil ratio reversal time and the water content increase type; According to the dominant channel characteristic characterization index, a plane classification characteristic characterization dominant channel characteristic standard is established; By combining the longitudinal hierarchical characterization dominant channel feature standard and the plane hierarchical characterization dominant channel feature standard, an invalid cycle identification standard is established, thereby achieving a three-dimensional hierarchical characterization of the dominant channel.

2. The method according to claim 1, characterized in that In the process of establishing the plane classification characterization dominant channel feature standard, the method further includes: When the cumulative oil production of the oil well is 50% of the maximum oil production and the water cut of the oil well is greater than 95%, if the cumulative oil production and the water cut start at a high level and rise steadily, and the cumulative water-oil ratio reversal time changes with time and starts at a level greater than 1 and rises steadily, and the water cut increase type is a rapid breakthrough type, then the current dominant channel is defined as a plane first-level dominant channel.

3. The method according to claim 1, characterized in that In the process of establishing the plane classification characterization dominant channel feature standard, the method further includes: When the cumulative oil production of the oil well is 50% of the maximum oil production, and the water cut of the oil well is greater than 90%, and the water cut of the oil well is less than 95%, if the cumulative oil production and the water cut start at a low level, increase suddenly and rise steadily, and the cumulative water-oil ratio reversal time starts at a level greater than 0.01, decreases gently and rises suddenly, and the water cut increase type is a steep step type, then the current dominant channel is defined as a planar secondary dominant channel.

4. The method according to claim 1, characterized in that: In the process of establishing the plane classification characterization dominant channel feature standard, the method further includes: When the cumulative oil production of the oil well is 50% of the maximum oil production, and the water cut of the oil well is greater than 80%, and the water cut of the oil well is less than 90%, if the cumulative oil production and water cut start from a low level and rise parabolically, and the cumulative water-oil ratio reversal time starts at less than 1, declines gently and rises sharply, and the water cut increase type is a steady climbing type, then the current dominant channel is defined as a plane three-level dominant channel.

5. The method according to claim 1, characterized in that In the process of establishing the plane classification characterization dominant channel feature standard, the method further includes: When the cumulative oil production of the oil well is 50% of the maximum oil production and the water cut of the oil well is less than 80%, if the cumulative oil production and the water cut start from a low level and rise steadily, and the cumulative water-oil ratio reversal time starts at a level greater than 0.01 and rises steadily, and the water cut rise type is slow and steady, then the current dominant channel is defined as a plane fourth-level dominant channel.

6. The method according to claim 1, characterized in that In the process of establishing the longitudinal hierarchical characterization dominant channel feature standard, the method further includes: By obtaining the water injection intensity, liquid production intensity, cumulative water injection volume per unit thickness, relative water absorption ratio, apparent water absorption index, water injection multiple, and water content of the flow unit, the evaluation index limit is calculated; By combining the moisture content of the flow unit and the evaluation index limit, a longitudinal grading standard for characterizing the characteristics of the dominant channel is established.

7. The method according to claim 6, characterized in that The water content of the flow unit is 95%-100%, or 90%-95%, or 80%-90%, or 0%-80%.

8. A three-dimensional hierarchical characterization dominant channel device, characterized in that: The device comprises: A determination unit, used for determining the geological characteristics of the reservoir by acquiring geological information of the reservoir; An acquisition unit is used to acquire the dynamic production characteristics of the flow unit according to the geological characteristics, so as to obtain the dominant channel characteristic characterization index according to the dynamic production characteristics, wherein the flow unit includes a water injection well and an oil production well, and the dominant channel characteristic characterization index includes the change form of the cumulative oil production and the water content, the cumulative water-oil ratio reversal time and the water content increase type; A construction unit, used to establish a plane hierarchical characterization dominant channel feature standard according to the dominant channel feature characterization index; The characterization unit is used to establish an invalid cycle identification standard by combining the longitudinal hierarchical characterization dominant channel feature standard and the plane hierarchical characterization dominant channel feature standard, thereby realizing a three-dimensional hierarchical characterization of the dominant channel.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores at least one program code, and the at least one program code is loaded and executed by a processor to implement the operations performed by the method according to any one of claims 1 to 7.

10. An electronic device, characterized in that: The electronic device includes one or more processors and one or more memories, wherein the one or more memories store at least one program code, and the at least one program code is loaded and executed by the one or more processors to implement the operations performed by the method according to any one of claims 1 to 7.

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