Method and device for determining slug structure design, storage medium and electronic equipment

Abstract

The invention provides a method and device for determining slug structure design, a storage medium and electronic equipment. The method for determining the slug structure design comprises the steps that all water flow advantage parameters of a target water flow advantage channel between an oil well and a water well are obtained; according to a preset mapping relation between a water flow advantage parameter interval and an evaluation coefficient, obtaining a water flow evaluation coefficient mapped by each obtained water flow advantage parameter; based on each water flow evaluation coefficient and the corresponding coefficient weight, obtaining an evaluation value of the target water flow dominant channel; determining a water flow dominant channel development type of the target water flow dominant channel according to a preset corresponding relationship between a water flow dominant channel development type and an evaluation value; and querying a preset corresponding relationship between the development type of the water flow dominant channel and the slug structure design, and obtaining the slug structure design corresponding to the determined development type of the water flow dominant channel. The slug structure can be optimized.

Description

Technical Field

[0001] The invention relates to the field of oilfield development, and in particular to a method, a device, a storage medium and an electronic device for determining a slug structure design. Background Art

[0002] In the water injection development of oil fields, as the water injection time increases, due to the difference in permeability of the formation, the development of advantageous channels between oil and water wells leads to the strengthening of the heterogeneity of water absorption in the oil layer, or the absorption of water in a single layer, resulting in the ineffective circulation of injected water underground, or the flooding of the oil wells, and the inability to produce normally. As the leading technology for managing the ineffective circulation of water injection and improving the contradiction between injection and production, the flooding plays an important role in increasing and stabilizing the production of old oil fields. However, with the increase in the scale of flooding application and the increase in the number of treatment rounds, the flooding potential of the near-well area has decreased, and the difficulty of maintaining and improving the effect of conventional flooding has continued to increase. The development degree of advantageous channels between oil and water wells is one of the key factors in the design of deep flooding slug structures. Therefore, accurately and quickly identifying the development degree of advantageous channels between oil and water wells, and then designing targeted slug structures for different wells, has a significant impact on the success of deep flooding.

[0003] The current method for designing deep flooding slug structures requires physical simulation experiments to test the breakthrough pressure of different flooding systems. The physical simulation experiments have low repeatability and long experimental cycles, and cannot meet the needs of slug structure design for deep flooding inter-well advantageous channels. Summary of the invention

[0004] In view of this, the present invention provides a method, device, storage medium and electronic device for determining a slug structure design.

[0005] Specifically, the present invention is achieved through the following technical solutions:

[0006] According to a first aspect of the present invention, there is provided a method for determining a slug structure design, the method comprising:

[0007] Obtaining various water flow dominant parameters of target water flow dominant channels between oil and water wells;

[0008] According to the mapping relationship between the pre-set water flow advantage parameter interval and the evaluation coefficient, the water flow evaluation coefficient mapped to each acquired water flow advantage parameter is obtained;

[0009] Based on each of the water flow evaluation coefficients and the corresponding coefficient weights, obtaining an evaluation value of the target water flow dominant channel;

[0010] Determine the water flow dominant channel development type of the target water flow dominant channel according to the preset corresponding relationship between the water flow dominant channel development type and the evaluation value;

[0011] The correspondence between the preset dominant flow channel development type and the slug structure design is queried to obtain the slug structure design corresponding to the determined dominant flow channel development type.

[0012] The method for determining the design of the slug structure of the present embodiment uses the water flow advantage parameters that are easily obtained at the oil field site to evaluate the target water flow advantage channel, and determines the development degree of the advantage channel based on the corresponding relationship between the development type of the water flow advantage channel and the evaluation value, and then determines the deep control and flooding slug structure of wells with different advantage channel developments in combination with historical control and flooding experience, which has better accuracy and applicability.

[0013] According to a second aspect of the present invention, there is provided a device for determining a slug structure design, the device for determining a slug structure design comprising:

[0014] A parameter acquisition module, used to obtain various water flow dominant parameters of the target water flow dominant channel between oil and water wells;

[0015] The evaluation coefficient acquisition module is used to obtain the water flow evaluation coefficient mapped to each water flow advantage parameter according to the mapping relationship between the preset water flow advantage parameter interval and the evaluation coefficient;

[0016] An evaluation value calculation module, used to obtain the evaluation value of the target water flow dominant channel based on each of the water flow evaluation coefficients and the corresponding coefficient weights;

[0017] A development type judgment module, used to determine the water flow dominant channel development type of the target water flow dominant channel according to the corresponding relationship between the preset water flow dominant channel development type and the evaluation value;

[0018] The slug structure design module is used to query the correspondence between the preset water flow dominant channel development type and the slug structure design, and obtain the slug structure design corresponding to the determined water flow dominant channel development type.

[0019] According to a third aspect of the present invention, there is provided a storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method for determining a slug structure design in any possible implementation of the first aspect.

[0020] According to a fourth aspect of the present invention, there is provided an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of the method for determining a slug structure design in any possible implementation of the first aspect are implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 A schematic flow chart of a method for determining a slug structure design provided by an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of a processing device for determining a slug structure design provided by an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1 The embodiment of the present invention provides a method for determining the design of a slug structure. The method can be applied to the design of a slug structure of a well-interwell water flow dominant channel for deep flooding. The method may include the following steps:

[0028] S101, obtaining each water flow dominant parameter of the target water flow dominant channel between oil and water wells;

[0029] In this embodiment, as an optional embodiment, water flow dominant parameters can be selected for subsequent evaluation based on the difficulty and completeness of data obtained on site. The water flow dominant parameters can include reservoir static parameters and production dynamic parameters.

[0030] In this embodiment, as an optional embodiment, based on the reservoir and development characteristics of the corresponding blocks between oil and water wells, the importance and representativeness of the water flow advantage parameters and the difficulty of obtaining field data are comprehensively considered, and permeability, porosity and pore throat radius can be selected as reservoir static parameters, and water injection multiples, pressure index, fullness and water absorption intensity can be selected as production dynamic parameters.

[0031] S102, obtaining the water flow evaluation coefficient mapped to each acquired water flow advantage parameter according to the pre-set mapping relationship between the water flow advantage parameter interval and the evaluation coefficient;

[0032] In this embodiment, as an optional embodiment, according to the historical development level of each water flow dominant channel, that is, the development type of the water flow dominant channel, the water flow advantage parameter values ​​of the water flow dominant channels at the same development level are statistically analyzed to obtain the water flow advantage parameter range of the water flow dominant channels at this development level.

[0033] In this embodiment, different development levels represent different degrees of cross-flow.

[0034] In this embodiment, as an optional embodiment, the dominant channel development level may include: dominant channel severe development type, dominant channel mild development type and dominant channel no development type.

[0035] In this embodiment, as an optional embodiment, the water flow dominant channel development type can be determined by counting the water flow dominant parameters (water flow dominant parameter values) collected in the block, selecting production dynamic parameters and reservoir static parameters, analyzing the change rules of the selected production dynamic parameters and reservoir static parameters, determining the number of water flow dominant channel development types according to the change rules, and determining the water flow dominant parameter interval of each water flow dominant channel development type according to the statistical and analytical methods. For example, according to the change rules, the water flow dominant channel development type is classified into three different types, and the water flow dominant parameter interval (water flow dominant parameter value interval) corresponding to each type of water flow dominant channel development type is obtained.

[0036] In this embodiment, since the value ranges of different water flow advantage parameters vary greatly and the dimensions of each water flow advantage parameter are different, in order to characterize the influence of the water flow advantage parameters on the development types of different water flow advantage channels, a corresponding evaluation coefficient is set for each water flow advantage parameter interval of each water flow advantage channel development type.

[0037] S103, obtaining an evaluation value of the target water flow dominant channel based on each of the water flow evaluation coefficients and the corresponding coefficient weights;

[0038] In this embodiment, different water flow advantage parameters have different effects on the development type of water flow advantage channels. Therefore, the coefficient weight of each water flow advantage parameter is set according to the correlation between the degree of development of the advantage channel and the water flow advantage parameter. As an optional embodiment, the influence of a water flow advantage parameter on the development of the water flow advantage channel can be determined by sequentially changing the value of a water flow advantage parameter and keeping the values ​​of other water flow advantage parameters unchanged. The influence of each water flow advantage parameter on the development of the water flow advantage channel is ranked, and the coefficient weight corresponding to each water flow advantage parameter is determined accordingly.

[0039] In this embodiment, the coefficient weights corresponding to various water flow advantage parameters and the water flow advantage parameter ranges are shown in Table 1.

[0040] Table 1

[0041] Water flow advantage parameters Coefficient weight Severe developmental Mild No developmental type Porosity 1 ≥21.8 19.6-21.8 ≤19.6 Permeability 2 ≥1200 600-1200 ≤600 Pore ​​throat radius 1 ≥7.2 5.8-7.2 ≤5.8 Water injection multiple 1 ≥2 1-2 ≤1 Stress Index 1 ≤2 2-4 ≥4 Fullness 2 ≤0.2 0.2-0.5 ≥0.5 Water absorption strength 2 ≥10 6-10 ≤6

[0042] In this embodiment, taking permeability as an example, it is found through a large number of statistics that in the corresponding water flow dominant channel development type in the block, when the permeability is less than 600mD, the reservoir permeability is small and no water flow dominant channel will be formed. Therefore, the water flow dominant parameter interval (permeability interval) corresponding to the dominant channel non-development type is set to be less than or equal to 600mD; when the permeability is between 600-1200mD, the reservoir permeability is large and there is a possibility of forming a water flow dominant channel. Therefore, the water flow dominant parameter interval (permeability interval) corresponding to the moderate development type of the dominant channel is set to be greater than 600mD and less than 1200mD; when the permeability is greater than 1200mD, the reservoir permeability is very large, and under the continuous flushing of the injected water, serious water flow dominant channels are likely to occur. Therefore, the water flow dominant parameter interval (permeability interval) corresponding to the serious development type of the dominant channel is set to be greater than or equal to 1200mD.

[0043] In this embodiment, as an optional embodiment, taking the classification of the water flow dominant channel development type into three types as an example, the evaluation coefficient of the water flow dominant parameter interval corresponding to each water flow dominant channel development type is set to construct a mapping relationship between the water flow dominant parameter interval and the evaluation coefficient. Taking permeability as an example, the mapping relationships set are: the evaluation coefficient corresponding to the permeability interval (less than or equal to 600mD) is 0, the permeability interval (greater than 600mD and less than 1200mD) corresponds to the permeability evaluation coefficient of 1, and the permeability interval (greater than or equal to 1200mD) corresponds to the permeability evaluation coefficient of 2. For example: the permeability of a well is 400mD, which is within the permeability range (less than or equal to 600mD). According to the mapping relationship between the water flow advantage parameter range and the evaluation coefficient, the permeability evaluation coefficient of the permeability mapping obtained is 0; if the permeability is 850mD, which is within the permeability range (600-1200)mD, according to the mapping relationship between the water flow advantage parameter range and the evaluation coefficient, the permeability evaluation coefficient of the permeability mapping obtained is 1; if the permeability is 1400mD, which is within the permeability range (greater than or equal to 1200mD), according to the mapping relationship between the water flow advantage parameter range and the evaluation coefficient, the permeability evaluation coefficient of the permeability mapping obtained is 2.

[0044] In this embodiment, as an optional embodiment, based on each of the water flow evaluation coefficients and the corresponding coefficient weights, obtaining the evaluation value of the target water flow dominant channel includes:

[0045] Respectively calculate the porosity product of the water flow evaluation coefficient of the porosity mapping and the porosity coefficient weight, the permeability product of the water flow evaluation coefficient of the permeability mapping and the permeability coefficient weight, the pore throat radius product of the water flow evaluation coefficient of the pore throat radius mapping and the pore throat radius coefficient weight, the water injection multiple product of the water flow evaluation coefficient of the water injection multiple mapping and the water injection multiple coefficient weight, the pressure index product of the water flow evaluation coefficient of the pressure index mapping and the pressure index coefficient weight, the fullness product of the water flow evaluation coefficient of the fullness mapping and the fullness coefficient weight, and the water absorption intensity product of the water flow evaluation coefficient of the water absorption intensity mapping and the water absorption intensity coefficient weight;

[0046] The sum of the porosity product, the permeability product, the pore throat radius product, the water injection multiple product, the pressure index product, the fullness product and the water absorption intensity product is calculated to obtain the evaluation value of the target water flow dominant channel.

[0047] In this embodiment, as an optional embodiment, the evaluation value of each well is calculated.

[0048] In this embodiment, as an optional embodiment, the evaluation value of the target water flow dominant channel (the evaluation value of the well) is calculated using the following formula:

[0049] F=F j ω j +F D ω D

[0050]

[0051] Where i = j or D, F is the evaluation value of the target water flow dominant channel, dimensionless; F j is the comprehensive evaluation coefficient of reservoir static parameters, dimensionless; F D is the comprehensive evaluation coefficient of production dynamic parameters, dimensionless; ω j is the reservoir static parameter coefficient weight, dimensionless; ω D F is the comprehensive evaluation coefficient of production dynamic parameters, dimensionless; ki is the water flow evaluation coefficient mapped by the kth water flow advantage parameter, dimensionless; ω ki The coefficient weight corresponding to the kth flow advantage parameter, dimensionless.

[0052] In this embodiment, as an optional embodiment, the water flow evaluation coefficient and the coefficient weight can also be normalized respectively. In this embodiment, as an optional embodiment, taking the water flow evaluation coefficient as an example, the sum of the water flow evaluation coefficients mapped by each water flow advantage parameter is obtained, and for each water flow advantage parameter, the water flow evaluation coefficient mapped by the water flow advantage parameter is divided by the sum to obtain the normalized value of the water flow advantage parameter.

[0053] In this embodiment, the porosity coefficient weight, permeability coefficient weight, pore throat radius coefficient weight, water injection multiple coefficient weight, pressure index coefficient weight, fullness coefficient weight, and water absorption intensity coefficient weight are normalized coefficient weights, and the sum of all normalized coefficient weights is 1.

[0054] In this embodiment, according to the actual characteristics of the oil reservoir, through investigation and analysis, the dominant water flow channels under different geological and development conditions are divided into the following three types, namely: severe dominant channel development type, moderate dominant channel development type and no dominant channel development type. Table 2 is a schematic table of normalized evaluation values ​​corresponding to each dominant water flow channel development type obtained by normalizing Table 1.

[0055] Table 2

[0056] Development type of dominant water flow channel Severe Mild No developmental type Normalized score Greater than 0.6 0.3-0.6 Less than 0.3

[0057] In this embodiment, as an optional embodiment, after the normalized value of the water flow advantage parameter is determined, the normalized value of each injection well of the deep adjustment and displacement can be obtained according to each normalized value. Table 3 is the evaluation value of each deep adjustment and displacement injection well in a block. Among them, each deep adjustment and displacement injection well corresponds to the evaluation value of a target water flow advantage channel.

[0058] Table 3

[0059] Serial number Injection well Normalized value 1 1# 4.5 2 2# 5.0 3 3# 5.5 4 4# 4.5 5 5# 2.5 6 6# 9.5 7 7# 9.0 8 8# 8.5

[0060] S104, determining the water flow dominant channel development type of the target water flow dominant channel according to the preset correspondence between the water flow dominant channel development type and the evaluation value;

[0061] In this embodiment, as an optional embodiment, the scores of each deep injection well can be normalized, and the relative development of the dominant water flow channel can be qualitatively judged based on the corresponding relationship between the development type of the dominant water flow channel and the evaluation value.

[0062] Table 4 shows the normalized values ​​of each deep injection well based on Table 2 and Table 3 and the development type of dominant water flow channels determined according to the corresponding relationship.

[0063] Table 4

[0064]

[0065] S105, querying the correspondence between the pre-set development type of water flow dominant channel and the slug structure design, and obtaining the slug structure design corresponding to the determined development type of water flow dominant channel.

[0066] In this embodiment, as an optional embodiment, according to the specific identification results of each deep injection well (the evaluation value of the target water flow dominant channel), the development level of the dominant channel is judged, and deep injection plug design is performed for the dominant channel at different development levels. In this embodiment, as an optional embodiment, the correspondence between the pre-set water flow dominant channel development type and the specific plug structure design is as follows:

[0067] The dominant channel is severely developed: the "blocking + adjusting" segment plug structure is adopted, that is, the dominant channel is blocked first and then the hypertonic strip is adjusted;

[0068] The dominant channel develops moderately: the "regulation + drive" slug structure is adopted, that is, the high permeability strip is first adjusted and then the swept volume is expanded;

[0069] No development of dominant channels: Use "displacement" slugs, that is, inject the displacement system to expand the swept volume.

[0070] In this embodiment, as an optional embodiment, the corresponding relationship and the slug structure design adopted by each deep displacement injection well are shown in Table 5.

[0071] Table 5

[0072]

[0073]

[0074] In this embodiment, each water flow dominant parameter of the target water flow dominant channel between oil and water wells is obtained; based on the mapping relationship between the preset water flow dominant parameter interval and the evaluation coefficient, the water flow evaluation coefficient mapped to each of the acquired water flow dominant parameters is obtained; based on each of the water flow evaluation coefficients and the corresponding coefficient weights, the evaluation value of the target water flow dominant channel is obtained; based on the corresponding relationship between the preset water flow dominant channel development type and the evaluation value, the water flow dominant channel development type of the target water flow dominant channel is determined; the corresponding relationship between the preset water flow dominant channel development type and the segment structure design is queried to obtain the segment structure design corresponding to the determined water flow dominant channel development type. In this way, by using the easily obtained data of deep injection wells (oil-water wells), the evaluation value of the target water flow dominant channel is obtained through simple and easy-to-operate calculations. The slug structure design is determined based on the empirical correspondence between the development type of the water flow dominant channel and the evaluation value, and the correspondence between the development type of the water flow dominant channel and the slug structure design. This can effectively improve the accuracy of the identification results, and the slug structure design can be adjusted according to the characteristics of different oilfield development blocks. It can be used for the optimization design of the slug structure of the inter-well dominant channel of deep injection wells, with better accuracy and applicability.

[0075] Based on the same inventive concept, Figure 2As shown, an embodiment of the present invention further provides a device for determining a slug structure design, the device comprising:

[0076] The parameter acquisition module 201 is used to acquire various water flow dominant parameters of the target water flow dominant channel between the oil and water wells;

[0077] In this embodiment, as an optional embodiment, according to the difficulty and completeness of data obtained on site, the importance and representativeness of the water flow advantage parameters can be comprehensively considered for the oil reservoir and development characteristics of the block, and appropriate water flow advantage parameters can be selected for subsequent evaluation.

[0078] In this embodiment, as an optional embodiment, the water flow advantage parameters may include: reservoir static parameters and production dynamic parameters. The reservoir static parameters include: porosity, permeability, pore throat radius, and the production dynamic parameters include: water injection multiple, pressure index, fullness, and water absorption intensity.

[0079] The evaluation coefficient acquisition module 202 is used to obtain the water flow evaluation coefficient mapped to each water flow advantage parameter according to the mapping relationship between the water flow advantage parameter interval and the evaluation coefficient set in advance;

[0080] In this embodiment, as an optional embodiment, the water flow advantage parameter interval can be preset. As an optional embodiment, according to the development level of each water flow advantage channel in history, that is, the development type of the water flow advantage channel, the water flow advantage parameter values ​​of the water flow advantage channel at the same development level are counted and analyzed to obtain the water flow advantage parameter interval of the water flow advantage channel at the development level. Different development levels represent different degrees of crossflow.

[0081] In this embodiment, as an optional embodiment, the dominant channel development level may include: dominant channel severe development type, dominant channel mild development type and dominant channel no development type.

[0082] In this embodiment, as an optional embodiment, the variation law of the selected water flow advantage parameter is analyzed, the number of water flow advantage channel development types is determined according to the variation law, and for each water flow advantage channel development type, the water flow advantage parameter interval of the water flow advantage channel development type is determined according to the statistical and analytical methods. In order to characterize the influence of the water flow advantage parameter on different water flow advantage channel development types, a corresponding evaluation coefficient is set for each water flow advantage parameter interval of each water flow advantage channel development type.

[0083] An evaluation value calculation module 203 is used to obtain the evaluation value of the target water flow dominant channel based on each of the water flow evaluation coefficients and the corresponding coefficient weights;

[0084] In this embodiment, the coefficient weight of each water flow dominant parameter is set according to the correlation between the degree of development of the dominant channel and the water flow dominant parameter.

[0085] In this embodiment, as an optional embodiment, taking the classification of water flow dominant channel development types into three types as an example, the evaluation coefficient of the water flow dominant parameter interval corresponding to each water flow dominant channel development type is set to construct a mapping relationship between the water flow dominant parameter interval and the evaluation coefficient. Based on each of the water flow evaluation coefficients and the corresponding coefficient weights, the evaluation value of the target water flow dominant channel is obtained, including:

[0086] A parameter product acquisition unit, used for acquiring the product of the water flow evaluation coefficient and the coefficient weight for each parameter, wherein each of the parameters corresponds to a parameter product;

[0087] The evaluation value acquisition unit is used to calculate the sum of the products of the parameters to obtain the evaluation value of the target water flow dominant channel.

[0088] In this embodiment, as an optional embodiment, the evaluation value of each well is calculated.

[0089] In this embodiment, as an optional embodiment, the water flow evaluation coefficient and the coefficient weight can also be normalized respectively. In this embodiment, as an optional embodiment, taking the water flow evaluation coefficient as an example, the sum of the water flow evaluation coefficients mapped by each water flow advantage parameter is obtained, and for each water flow advantage parameter, the water flow evaluation coefficient mapped by the water flow advantage parameter is divided by the sum to obtain the normalized value of the water flow advantage parameter.

[0090] In this embodiment, the water flow advantage coefficient weight is a normalized coefficient weight, and the sum of all normalized coefficient weights is 1.

[0091] In this embodiment, as an optional embodiment, after the normalized value of the water flow dominant parameter is determined, the normalized value of each injection well of the deep flooding can be obtained according to each normalized value.

[0092] A development type judgment module 204 is used to determine the water flow dominant channel development type of the target water flow dominant channel according to the corresponding relationship between the preset water flow dominant channel development type and the evaluation value;

[0093] In this embodiment, as an optional embodiment, the dominant channel development type of water flow may include: dominant channel no development type, dominant channel moderate development type and dominant channel severe development type.

[0094] In this embodiment, according to the actual characteristics of the oil reservoir, through investigation and analysis, the corresponding relationship between the development type of water flow dominant channel and the evaluation value can be preset. As an optional embodiment, the normalized evaluation value corresponding to each water flow dominant channel development type obtained by normalization processing can be: when the evaluation value is greater than 0.6, the water flow dominant channel development type is a dominant channel severe development type; when the evaluation value is between 0.3 and 0.6, the water flow dominant channel development type is a dominant channel moderate development type; when the evaluation value is less than 0.3, the water flow dominant channel development type is a dominant channel no development type.

[0095] In this embodiment, as an optional embodiment, the relative development of the dominant water flow channel is qualitatively judged based on the corresponding relationship between the development type of the dominant water flow channel and the evaluation value.

[0096] The slug structure design module 205 is used to query the correspondence between the preset water flow dominant channel development type and the slug structure design, and obtain the slug structure design corresponding to the determined water flow dominant channel development type.

[0097] In this embodiment, as an optional embodiment, the correspondence between the pre-set water flow dominant channel development type and the slug structure design includes:

[0098] When the dominant channel development type is the severe dominant channel development type, the slug structure is designed to first block the dominant channel and then adjust the hypertonic strip;

[0099] When the dominant channel development type of water flow is the moderate dominant channel development type, the slug structure is designed to first adjust the high permeability strip and then expand the swept volume;

[0100] When the dominant channel development type of water flow is the dominant channel non-development type, the slug structure is designed to inject the displacement system to expand the swept volume.

[0101] In this embodiment, as an optional embodiment, the development type of the dominant flow channel is determined according to the specific identification results of each well, and deep adjustment and drive injection slug design is performed for the dominant flow channels of different development types. As an optional embodiment, the specific implementation steps of deep adjustment and drive injection slug design for the dominant flow channels of different development types can be:

[0102] When the dominant channel development type of water flow is the severe dominant channel development type, first inject body expansion particles + medium-high strength gel, and then inject medium-high strength gel or body expansion particle system;

[0103] When the dominant channel development type of water flow is the moderate dominant channel development type, medium-high strength gel or body expansion particles are injected first, and then weak gel or microsphere system is injected;

[0104] When the dominant channel development type of water flow is the dominant channel non-development type, a weak gel or microsphere system is injected.

[0105] Based on the same inventive concept, an embodiment of the present invention further provides a storage medium on which a computer program is stored. When the program is executed by a processor, the steps of the method for determining the design of a slug structure in any possible implementation manner described above are implemented.

[0106] Alternatively, the storage medium may be a non-transitory computer-readable storage medium, for example, the non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

[0107] Based on the same inventive concept, see Figure 3 The embodiment of the present invention further provides an electronic device, including a memory 101 (such as a non-volatile memory), a processor 102, and a computer program stored in the memory 101 and executable on the processor 102. When the processor 102 executes the program, the steps of the method for determining the design of the slug structure in any possible implementation manner described above are implemented, which may be equivalent to the device for determining the design of the slug structure as described above. Of course, the processor may also be used to process other data or operations. The electronic device may be a PC, a server, a terminal, or other equipment.

[0108] like Figure 3 As shown, the electronic device may also generally include: a memory 103, a network interface 104, and an internal bus 105. In addition to these components, other hardware may also be included, which will not be described in detail.

[0109] It should be pointed out that the above-mentioned device for determining the slug structure design can be implemented by software. As a device in a logical sense, it is formed by the processor 102 of the electronic device in which it is located reading the computer program instructions stored in the non-volatile memory into the memory 103 for execution.

[0110] The embodiments of the subject matter and functional operations described in this specification may be implemented in the following: digital electronic circuits, tangibly embodied computer software or firmware, computer hardware including the structures disclosed in this specification and their structural equivalents, or a combination of one or more of them. The embodiments of the subject matter described in this specification may be implemented as one or more computer programs, i.e., one or more modules in computer program instructions encoded on a tangible non-temporary program carrier to be executed by a data processing device or to control the operation of the data processing device. Alternatively or additionally, the program instructions may be encoded on an artificially generated propagation signal, such as a machine-generated electrical, optical or electromagnetic signal, which is generated to encode information and transmit it to a suitable receiver device for execution by a data processing device. The computer storage medium may be a machine-readable storage device, a machine-readable storage substrate, a random or serial access memory device, or a combination of one or more of them.

[0111] The processes and logic flows described in this specification can be performed by one or more programmable computers executing one or more computer programs to perform the corresponding functions by operating on input data and generating output. The processes and logic flows can also be performed by special purpose logic circuits, such as FPGAs (field programmable gate arrays) or ASICs (application specific integrated circuits), and the apparatus can also be implemented as special purpose logic circuits.

[0112] Computers suitable for executing computer programs include, for example, general and / or special microprocessors, or any other type of central processing unit. Typically, the central processing unit will receive instructions and data from a read-only memory and / or a random access memory. The basic components of a computer include a central processing unit for implementing or executing instructions and one or more memory devices for storing instructions and data. Typically, the computer will also include one or more large-capacity storage devices for storing data, such as magnetic disks, magneto-optical disks, or optical disks, or the computer will be operably coupled to this large-capacity storage device to receive data from it or to transmit data to it, or both. However, the computer does not necessarily have such a device. In addition, the computer can be embedded in another device, such as a mobile phone, a personal digital assistant (PDA), a mobile audio or video player, a game console, a global positioning system (GPS) receiver, or a portable storage device such as a universal serial bus (USB) flash drive, to name a few.

[0113] Computer readable media suitable for storing computer program instructions and data include all forms of non-volatile memory, media and memory devices, including, for example, semiconductor memory devices (e.g., EPROM, EEPROM and flash memory devices), magnetic disks (e.g., internal hard disks or removable disks), magneto-optical disks, and CD-ROM and DVD-ROM disks. The processor and memory may be supplemented by, or incorporated in, special purpose logic circuitry.

[0114] Although this specification includes many specific implementation details, these should not be interpreted as limiting the scope of any invention or the scope of protection claimed, but are mainly used to describe the features of the specific embodiments of specific inventions. Certain features described in multiple embodiments in this specification may also be implemented in combination in a single embodiment. On the other hand, the various features described in a single embodiment may also be implemented separately in multiple embodiments or in any suitable sub-combination. In addition, although features may work in certain combinations as described above and even initially claim protection, one or more features from the claimed combination may be removed from the combination in some cases, and the claimed combination may point to a sub-combination or a variation of a sub-combination.

[0115] Similarly, while operations are depicted in a particular order in the drawings, this should not be understood as requiring that the operations be performed in the particular order shown or performed sequentially, or that all illustrated operations be performed, to achieve desired results. In certain circumstances, multitasking and parallel processing may be advantageous.

[0116] Thus, specific embodiments of the subject matter have been described. Other embodiments are within the scope of the appended claims. In some cases, the actions recited in the claims can be performed in a different order and still achieve the desired results. Furthermore, the processes depicted in the drawings do not necessarily require the particular order shown or sequential order to achieve the desired results.

[0117] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0118] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for determining a slug structure design, characterized in that: include: Obtaining various water flow dominant parameters of target water flow dominant channels between oil and water wells; According to the mapping relationship between the pre-set water flow advantage parameter interval and the evaluation coefficient, the water flow evaluation coefficient mapped to each acquired water flow advantage parameter is obtained; Based on each of the water flow evaluation coefficients and the corresponding coefficient weights, obtaining an evaluation value of the target water flow dominant channel; Determine the water flow dominant channel development type of the target water flow dominant channel according to the preset corresponding relationship between the water flow dominant channel development type and the evaluation value; The correspondence between the preset dominant flow channel development type and the slug structure design is queried to obtain the slug structure design corresponding to the determined dominant flow channel development type.

2. The method according to claim 1, characterized in that The water flow dominant parameters include: reservoir static parameters and production dynamic parameters.

3. The method according to claim 2, characterized in that The reservoir static parameters include: porosity, permeability, pore throat radius, and the production dynamic parameters include: water injection multiple, pressure index, fullness, and water absorption intensity.

4. The method according to claim 3, characterized in that The step of obtaining the evaluation value of the target water flow dominant channel based on each of the water flow evaluation coefficients and the corresponding coefficient weights includes: Respectively calculate the porosity product of the water flow evaluation coefficient of the porosity mapping and the porosity coefficient weight, the permeability product of the water flow evaluation coefficient of the permeability mapping and the permeability coefficient weight, the pore throat radius product of the water flow evaluation coefficient of the pore throat radius mapping and the pore throat radius coefficient weight, the water injection multiple product of the water flow evaluation coefficient of the water injection multiple mapping and the water injection multiple coefficient weight, the pressure index product of the water flow evaluation coefficient of the pressure index mapping and the pressure index coefficient weight, the fullness product of the water flow evaluation coefficient of the fullness mapping and the fullness coefficient weight, and the water absorption intensity product of the water flow evaluation coefficient of the water absorption intensity mapping and the water absorption intensity coefficient weight; The sum of the porosity product, the permeability product, the pore throat radius product, the water injection multiple product, the pressure index product, the fullness product and the water absorption intensity product is calculated to obtain the evaluation value of the target water flow dominant channel.

5. The method according to claim 4, characterized in that The porosity coefficient weight, permeability coefficient weight, pore throat radius coefficient weight, water injection multiple coefficient weight, pressure index coefficient weight, fullness coefficient weight, and water absorption intensity coefficient weight are normalized coefficient weights, and the sum of all normalized coefficient weights is 1.

6. The method according to any one of claims 1 to 5, characterized in that: The dominant channel development types of water flow include: dominant channel non-development type, dominant channel moderate development type and dominant channel severe development type.

7. The method according to claim 6, characterized in that The correspondence between the pre-set water flow dominant channel development type and the slug structure design includes: The dominant channel development type of the water flow is the severe development type of the dominant channel, and the slug structure is designed to first block the dominant channel and then adjust the hypertonic strip; The dominant channel development type of the water flow is the moderate dominant channel development type, and the slug structure is designed to first adjust the hypertonic strip and then expand the swept volume; The dominant water flow channel development type is as described above, and the segment plug structure is designed to inject a displacement system to expand the swept volume.

8. A device for determining a slug structure design, characterized in that: The device for determining the slug structure design comprises: A parameter acquisition module, used to obtain various water flow dominant parameters of the target water flow dominant channel between oil and water wells; The evaluation coefficient acquisition module is used to obtain the water flow evaluation coefficient mapped to each water flow advantage parameter according to the mapping relationship between the preset water flow advantage parameter interval and the evaluation coefficient; An evaluation value calculation module, used to obtain the evaluation value of the target water flow dominant channel based on each of the water flow evaluation coefficients and the corresponding coefficient weights; A development type judgment module, used to determine the water flow dominant channel development type of the target water flow dominant channel according to the corresponding relationship between the preset water flow dominant channel development type and the evaluation value; The slug structure design module is used to query the correspondence between the preset water flow dominant channel development type and the slug structure design, and obtain the slug structure design corresponding to the determined water flow dominant channel development type.

9. A storage medium, characterized in that: The storage medium stores a program or an instruction, and when the program or the instruction is executed by a processor, the steps of the method for determining the slug structure design according to any one of claims 1 to 7 are implemented.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the steps of the method for determining a slug structure design according to any one of claims 1 to 7 are implemented.

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