Method, device and storage medium for identifying dominant channel of fire drive reservoir

Abstract

The present invention discloses a method for identifying a dominant channel of a fire-driven reservoir, an identification device, and a storage medium. The method comprises: obtaining static identification parameters of the dominant channel of the fire-driven reservoir; preliminarily identifying the dominant channel based on the static identification parameters to obtain a preliminary identification result; establishing a dominant channel identification model based on a preset association algorithm and the preliminary identification result; identifying the dominant channel based on the dominant channel identification model to generate a corresponding channel identification result. By obtaining the static parameters and dynamic parameters of the dominant channel of the fire-driven reservoir, and identifying the dominant channel in a static and dynamic combination manner, accurate identification of the dominant channel is achieved, thereby meeting actual needs.

Description

Technical Field

[0001] The present invention relates to the technical field of geological identification, and in particular to a method for identifying a dominant channel of a fire-driven reservoir, a device for identifying a dominant channel of a fire-driven reservoir, and a computer-readable storage medium. Background Art

[0002] The fire-driven advantageous channel refers to the channel for gas and fluid seepage formed by the combined effects of geology and development, also known as large pores, crossflow channels, etc.

[0003] After steam injection development, due to the existence of dominant seepage channels in the reservoir, there are differences in the plane fire line spread and the vertical gas absorption of each layer. For multi-layer fire drive in thin interlayer reservoirs, the vertical utilization degree of the reservoir is low and the fire line spread is extremely uneven, which has caused great troubles for the actual reservoir development. Therefore, it is urgent to identify the dominant seepage channels in the fire drive process.

[0004] However, in actual application, on the one hand, there is no detection and identification method for the dominant seepage channels in the fire drive development of oil reservoirs, especially the fire drive development of heavy oil reservoirs in the prior art; on the other hand, under different terrain conditions of different oil reservoirs, the complexity and differences of the actual terrain conditions further lead to the difficulty of identifying the dominant seepage channels in the fire drive development process, thereby reducing the effect of fire drive development, increasing the difficulty of development regulation, and failing to meet the actual needs of existing technical personnel. Summary of the invention

[0005] In order to overcome the above-mentioned technical problems existing in the prior art, the embodiments of the present invention provide a method and device for identifying a dominant channel of a fire drive reservoir, which obtains static parameters and dynamic parameters of the dominant channel of the fire drive reservoir, and identifies the dominant channel in a static and dynamic combination manner, thereby achieving accurate identification of the dominant channel and meeting actual needs.

[0006] In order to achieve the above-mentioned purpose, an embodiment of the present invention provides a method for identifying a dominant channel of a fire-driven reservoir, the method comprising: obtaining static identification parameters of a dominant channel of the fire-driven reservoir; preliminarily identifying the dominant channel based on the static identification parameters to obtain a preliminary identification result; establishing a dominant channel identification model based on a preset association algorithm and the preliminary identification result; identifying the dominant channel based on the dominant channel identification model to generate a corresponding channel identification result.

[0007] Preferably, the obtaining of static identification parameters of the dominant channel of the fire drive reservoir comprises: obtaining geological data of a to-be-studied area of ​​the fire drive reservoir, the to-be-studied area comprising tracer injection wells, high-efficiency wells and medium-production wells; obtaining mass production data of the to-be-studied area; and analyzing the geological data based on the mass production data and a preset statistical method to generate static identification parameters of the dominant channel.

[0008] Preferably, the dominant channel includes a strong response channel and a secondary response channel, and the preliminary identification of the dominant channel based on the static identification parameters to obtain a preliminary identification result includes: selecting a specific well group in the area to be studied; performing production dynamic analysis on the specific well group to obtain first analysis data; processing the first analysis data based on the geological data and the preset mass production data to obtain preliminary identification results for the strong response channel and the secondary response channel.

[0009] Preferably, the dominant channel also includes a gas channel, and the preliminary identification of the dominant channel based on the static identification parameters to obtain a preliminary identification result includes: performing a tracer injection operation on the area to be studied to obtain a corresponding injection monitoring result; preliminarily determining the gas channel based on the injection monitoring result; obtaining exhaust gas monitoring data, and preliminarily identifying the area to be studied based on the exhaust gas monitoring data and the geological data to generate a preliminary identification result for the gas channel.

[0010] Preferably, the establishing of the dominant channel identification model based on the preset association algorithm and the preliminary identification result includes: determining the main control parameters of the dominant channel based on the preliminary identification result; determining the weight information of the main control parameters; and establishing the dominant channel identification model based on the preset association algorithm, the main control parameters and the weight information.

[0011] Preferably, the dominant channel is identified based on the dominant channel identification model to generate a corresponding channel identification result, including: generating a channel identification standard based on the dominant channel identification model; acquiring static geological data and dynamic production data of the production well to be identified; and analyzing the static geological data and the dynamic production data based on the channel identification standard to generate a corresponding channel identification result.

[0012] Preferably, the method further comprises: after generating the channel identification result, generating a three-dimensional geological model of the dominant channel of the production well to be identified based on the channel identification result; and generating injection and production guidance information based on the three-dimensional geological model.

[0013] Correspondingly, an embodiment of the present invention further provides a device for identifying a dominant channel of a fire-driven reservoir, the device comprising: a static parameter acquisition unit, used to acquire static identification parameters of the dominant channel of the fire-driven reservoir; a preliminary identification unit, used to perform preliminary identification of the dominant channel based on the static identification parameters to obtain a preliminary identification result; a model establishment unit, used to establish a dominant channel identification model based on a preset association algorithm and the preliminary identification result; and a channel identification unit, used to identify the dominant channel based on the dominant channel identification model to generate a corresponding channel identification result.

[0014] Preferably, the static parameter acquisition unit includes: a geological data acquisition module, used to acquire geological data of the area to be studied of the fire drive reservoir, the area to be studied includes tracer injection wells, high-efficiency wells and medium-production wells; a mass production data acquisition module, used to acquire mass production data of the area to be studied; and a static parameter acquisition module, used to analyze the geological data based on the mass production data and a preset statistical method to generate static identification parameters of the dominant channel.

[0015] Preferably, the dominant channel includes a strong response channel and a secondary response channel, and the preliminary identification unit includes: a well group selection module, used to select a specific well group in the area to be studied; a dynamic analysis module, used to perform production dynamic analysis on the specific well group to obtain first analysis data; a first preliminary identification module, used to process the first analysis data based on the geological data and the preset mass production data to obtain preliminary identification results for the strong response channel and the secondary response channel.

[0016] Preferably, the dominant channel also includes a gas channel, and the preliminary identification unit also includes: an injection monitoring module, used to perform a tracer injection operation on the area to be studied and obtain a corresponding injection monitoring result; a preliminary determination module, used to preliminarily determine the gas channel based on the injection monitoring result; a second preliminary identification module, used to obtain exhaust gas monitoring data, preliminarily identify the area to be studied based on the exhaust gas monitoring data and the geological data, and generate a preliminary identification result for the gas channel.

[0017] Preferably, the model building unit includes: a main control parameter determination module, used to determine the main control parameters of the dominant channel based on the preliminary identification results; a weight determination module, used to determine the weight information of the main control parameters; and a model building module, used to establish the dominant channel identification model based on the preset association algorithm, the main control parameters and the weight information.

[0018] Preferably, the channel identification unit includes: a standard generation module, used to generate a channel identification standard based on the dominant channel identification model; a data acquisition module, used to acquire static geological data and dynamic production data of the production well to be identified; and a channel identification module, used to analyze the static geological data and the dynamic production data based on the channel identification standard to generate a corresponding channel identification result.

[0019] Preferably, the device also includes a three-dimensional model generation unit, which is used to: after generating the channel identification result, generate a three-dimensional geological model of the dominant channel of the production well to be identified based on the channel identification result; and generate injection and production guidance information based on the three-dimensional geological model.

[0020] On the other hand, an embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, and when the program is executed by a processor, the method provided by the embodiment of the present invention is implemented.

[0021] Through the technical solution provided by the present invention, the present invention has at least the following technical effects:

[0022] By acquiring static and dynamic data of dominant channels in fire-drive reservoirs during the identification process, and adopting a static and dynamic combination method, combined with a pre-created identification model and corresponding identification standards, the dominant channels in fire-drive reservoirs can be effectively identified, meeting the actual needs of technical personnel, and having important significance for the evaluation of fire-drive development effects and subsequent development deployment.

[0023] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. In the accompanying drawings:

[0025] Figure 1 This is a specific implementation flow chart of the method for identifying the dominant channel of a fire drive reservoir provided by an embodiment of the present invention;

[0026] Figure 2 It is a specific implementation flow chart of preliminary identification of the dominant channel in the method for identifying the dominant channel of the fire drive reservoir provided by the embodiment of the present invention;

[0027] Figure 3 This is a specific implementation flow chart of preliminary identification of the dominant channel in the method for identifying the dominant channel of the fire drive reservoir provided in the second embodiment of the present invention;

[0028] Figure 4 It is a specific implementation flow chart of establishing a dominant channel identification model in the method for identifying a dominant channel in a fire drive reservoir provided by an embodiment of the present invention;

[0029] Figure 5 It is a schematic diagram of main control parameters and corresponding weights in the method for identifying the dominant channel of the fire drive reservoir provided by an embodiment of the present invention;

[0030] Figure 6 It is a schematic diagram of a spatial distribution model of a dominant channel in a method for identifying a dominant channel in a fire drive reservoir provided by an embodiment of the present invention;

[0031] Figure 7 It is a schematic diagram of the structure of a device for identifying a dominant channel of a fire drive reservoir provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0032] The specific implementation of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the present invention, and is not used to limit the embodiment of the present invention.

[0033] The terms "system" and "network" in the embodiments of the present invention can be used interchangeably. "Multiple" means two or more than two. In view of this, "multiple" can also be understood as "at least two" in the embodiments of the present invention. "And / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / ", unless otherwise specified, generally indicates that the previous and subsequent associated objects are in an "or" relationship. In addition, it should be understood that in the description of the embodiments of the present invention, the words "first", "second", etc. are only used to distinguish the purpose of description, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying order.

[0034] See also Figure 1 The embodiment of the present invention provides a method for identifying a dominant channel of a fire drive reservoir, the method comprising:

[0035] S10) obtaining static identification parameters of the dominant channel of the fire drive reservoir;

[0036] S20) performing preliminary identification of the dominant channel based on the static identification parameters to obtain a preliminary identification result;

[0037] S30) establishing a dominant channel identification model based on a preset association algorithm and the preliminary identification result;

[0038] S40) identifying the dominant channel based on the dominant channel identification model and generating a corresponding channel identification result.

[0039] In an embodiment of the present invention, the obtaining of static identification parameters of the dominant channel of the fire drive reservoir comprises: obtaining geological data of a to-be-studied area of ​​the fire drive reservoir, the to-be-studied area comprising tracer injection wells, high-efficiency wells and medium-production wells; obtaining mass production data of the to-be-studied area; and analyzing the geological data based on the mass production data and a preset statistical method to generate static identification parameters of the dominant channel.

[0040] In a possible implementation, first obtain static identification parameters of the dominant channel of the fire drive reservoir, for example, by obtaining core data, well logging data, sedimentary microfacies, lithology, electrical characteristics, fire drive gas absorption profiles and other data of tracer injection wells, high-efficiency wells and medium-production wells in the study area, and obtaining mass production data of each well in the above-mentioned study area, and analyzing the above-mentioned geological data based on the mass production data and a preset statistical method, for example, the preset statistical method is a general geological statistical analysis method, to obtain static identification parameters of the dominant channel, the static identification parameters include but are not limited to the resistivity and acoustic time difference interpreted by well logging, and the formation permeability, step difference, breakthrough coefficient and coefficient of variation in the physical property parameters, and divide the dominant channel into a gas channel, a strong response channel and a secondary response channel, and determine the specific division index of each channel. At this time, the dominant channel is identified.

[0041] See also Figure 2 In an embodiment of the present invention, the dominant channel includes a strong response channel and a secondary response channel, and the preliminary identification of the dominant channel based on the static identification parameter to obtain a preliminary identification result includes:

[0042] S211) selecting a specific well group in the area to be studied;

[0043] S212) performing production performance analysis on the specific well group to obtain first analysis data;

[0044] S213) Processing the first analysis data based on the geological data and the mass production data to obtain preliminary identification results for the strong response channel and the secondary response channel.

[0045] In a possible implementation, a representative fire-driven well group is selected in the area to be studied and used as a specific well group. Then, for example, after selecting 25 representative well groups from a certain 66 fire-driven well groups, a production dynamic analysis is performed on the above 25 specific well groups. Specifically, a production dynamic analysis is performed between production wells and gas injection wells to calculate the dynamic response speed, monthly change amplitude and change speed of different parameters (such as daily oil production, daily liquid production, oil pressure, casing pressure, dynamic liquid level, O2 and CO2 in tail gas, etc.), that is, to obtain corresponding first analysis data, and then the first analysis data is processed based on the above geological data and production data. Specifically, the daily oil production data of the wells after fire-driven, seismic profiles, lithology, physical property parameters and numerical simulation results are combined to further determine the strata where strong response channels and secondary response channels occur, and further obtain dynamic identification parameters and classification identification indicators for strong response channels and secondary response channels.

[0046] For example, in the embodiment of the present invention, daily oil production data ≥ 3t / d is determined as high production, and daily oil production data between 1-3t / d is determined as medium production. The above high production and medium production classification standards are used as primary constraints for strong response and secondary response channels. Then, combined with seismic profiles, lithology, physical parameters and numerical simulation results, a dynamic and static combination method is used to comprehensively determine the strata where strong response channels and secondary response channels occur, and further determine the above dynamic identification parameters and classification identification indicators. According to the above classification identification indicators, preliminary identification results for strong response channels and secondary response channels can be generated. At this time, the gas channeling channel is further identified.

[0047] See also Figure 3 In an embodiment of the present invention, the dominant channel further includes a gas channel, and the preliminary identification of the dominant channel based on the static identification parameter to obtain a preliminary identification result includes:

[0048] S221) performing a tracer injection operation on the area to be studied to obtain corresponding injection monitoring results;

[0049] S222) preliminarily determining a gas channeling channel based on the injection monitoring result;

[0050] S223) Acquire tail gas monitoring data, perform preliminary identification on the area to be studied based on the tail gas monitoring data and the geological data, and generate preliminary identification results for the gas channeling channel.

[0051] In a possible implementation, a tracer injection operation is first performed on the study area, and the corresponding injection monitoring results are obtained, and the gas channeling channel is preliminarily determined. Specifically, based on the tracer injection well and sampling well results in the study area, combined with the fire drive numerical simulation, the gas channeling channel is preliminarily determined. At this time, the tail gas monitoring data is further obtained. For example, the tail gas monitoring data is the tail gas data in the production process. It is generally believed that the tail gas volume>8000m 3 / d, the wellhead temperature rises significantly, and the O2 content in the tail gas is >5%, then it is considered that there is a possibility of gas channeling. For example, in one embodiment, after a tracer is injected into a steam injection well, the tracer is detected in production wells A, B, and C. After the fire drive numerical simulation operation, it is found that there are gas channeling channels in the X geological layer and the Y geological layer, respectively, and the porosity and permeability of the connected well in the target layer are well developed. Combined with the tail gas data in the production process, the tail gas volume is >8000m3 / d, the wellhead temperature rises significantly, and the O2 content in the tail gas is >5%, then it can be determined that there is gas channeling. At this time, combined with the static parameter indicators such as sedimentary microfacies, lithology, and physical properties in the geological model, the well where gas channeling occurs and the layer where the gas channeling channel is located can be determined.

[0052] At this point, in order to improve the accuracy of identifying the dominant channel, an intelligent model is used to further identify the dominant channel, so it is necessary to first create a dominant channel identification model.

[0053] See also Figure 4 In an embodiment of the present invention, the method of establishing a dominant channel identification model based on a preset association algorithm and the preliminary identification result includes:

[0054] S31) determining the main control parameters of the dominant channel based on the preliminary identification result;

[0055] S32) determining the weight information of the master control parameters;

[0056] S33) Establishing the dominant channel identification model based on the preset association algorithm, the main control parameters and the weight information.

[0057] In a possible implementation, the main control parameters of the dominant channel are first determined according to the above preliminary identification results. For example, in the embodiment of the present invention, by analyzing the above three dominant channels, the corresponding main control parameters are obtained, including but not limited to daily oil production, permeability, oil layer thickness, oil saturation, permeability variation coefficient, cumulative oil production, cumulative water production, oil pressure, oil content and other parameters, and then the weight information of each main control parameter is determined. For example, see Figure 5, which is a schematic diagram of the main control parameters and the corresponding weights provided in an embodiment of the present invention. At this time, based on a preset association algorithm (for example, a grey association algorithm), in combination with the above-mentioned main control parameters and the corresponding weight information, a dominant channel identification model is established using Matlab as an analysis tool. For example, the dominant channel identification model is characterized as follows:

[0058]

[0059] In one embodiment, the CEI index value of the strong response well should be ≥ 0.65, and the CEI index value of the secondary response well should be between 0.42 and 0.65. At this time, the dominant channel of the fire drive reservoir can be identified by the above dominant channel identification model.

[0060] In an embodiment of the present invention, the dominant channel is identified based on the dominant channel identification model to generate a corresponding channel identification result, including: generating a channel identification standard based on the dominant channel identification model; acquiring static geological data and dynamic production data of the production well to be identified; and analyzing the static geological data and the dynamic production data based on the channel identification standard to generate a corresponding channel identification result.

[0061] In a possible implementation, firstly, a corresponding channel identification standard is generated according to the above dominant channel identification model, for example, see Table 1:

[0062]

[0063] Table 1

[0064] For example, for a production well in a certain work area, the geological data of the production well is obtained and analyzed, and the X s =1.5, permeability X k =1952.6mD, porosity X φ =24%; oil layer thickness X ho =44.6m; Cumulative oil production after fire flooding X sumo =13563.1t; Cumulative water production after fire flooding X sumw =21849t; average daily oil production after conversion drive X aver =3.47t / d; oil content after drive X O =X sumo / (X sumo +X sumw )=0.3947, tail gas CO2 proportion X c =19.85%, so we can further determine its

[0065] CEI = 0.0462*1.5+0.2779*10 -4*1952.6+0.002804*24.0+0.001806*44.6+0.7381*10 -5 *13563.1+0.2582*10 -5 *21849+0.03306*3.47+0.2046*0.3947+0.003397*19.85=0.0693+0.0542+0.0673+0.0805+0.1001+0.0564+0.1147+0.0807+0.0674=0.691. At this time, according to the above identification criteria, it can be determined that the production well is located in the strong response area and there is a dominant channel. After the well was switched to fire flooding, the average daily oil production was 3.47t and the cumulative oil production was 13563.1t. It is a typical high-yield well, and there is a strong response channel between the injection and production wells.

[0066] In an embodiment of the present invention, the method further includes: after generating the channel identification result, generating a three-dimensional geological model of the dominant channel of the production well to be identified based on the channel identification result; and generating injection and production guidance information based on the three-dimensional geological model.

[0067] In a possible implementation, after generating the identification result of the dominant channel, a three-dimensional geological model of the dominant channel of the production well to be identified is generated according to the channel identification result. Specifically, in the embodiment of the present invention, since the sandstone and medium-fine sandstone are the seepage channels of the reservoir, they are conducive to the formation of the dominant channel. Therefore, the above channel identification results can be further combined to characterize the spatial distribution model of the dominant seepage channel of the reservoir hierarchical fire drive with the porosity model greater than 0.2 and the permeability model being 670-1900mD, 1900-4300mD, and greater than 2200mD as the standard, so as to finely characterize the spatial distribution law of the dominant channel. For example, see Figure 6 , which is a schematic diagram of the spatial distribution model of the advantageous channel provided in an embodiment of the present invention. At this time, corresponding injection-production guidance information can be generated according to the above spatial distribution model to guide the determination of the optimal fire drive layer section and the injection-production well section combination.

[0068] In the embodiment of the present invention, by utilizing core data, logging data, production dynamic data, tail gas data and other data, based on numerical simulation and geological model, a dynamic and static combined analysis is performed to establish an identification standard for the dominant channel of the fire drive reservoir, thereby greatly improving the accuracy of identifying the fire drive reservoir, which is of great significance to the subsequent fire drive development effect evaluation and subsequent development deployment.

[0069] The device for identifying the dominant channel of a fire drive reservoir provided by an embodiment of the present invention is described below with reference to the accompanying drawings.

[0070] See also Figure 7Based on the same inventive concept, an embodiment of the present invention provides a device for identifying a dominant channel of a fire-driven reservoir, the device comprising: a static parameter acquisition unit, used to acquire static identification parameters of the dominant channel of the fire-driven reservoir; a preliminary identification unit, used to perform preliminary identification on the dominant channel based on the static identification parameters to obtain a preliminary identification result; a model building unit, used to establish a dominant channel identification model based on a preset association algorithm and the preliminary identification result; a channel identification unit, used to identify the dominant channel based on the dominant channel identification model to generate a corresponding channel identification result.

[0071] In an embodiment of the present invention, the static parameter acquisition unit includes: a geological data acquisition module, which is used to acquire geological data of the area to be studied of the fire drive reservoir, and the area to be studied includes tracer injection wells, high-efficiency wells and medium-production wells; a mass production data acquisition module, which is used to acquire mass production data of the area to be studied; and a static parameter acquisition module, which is used to analyze the geological data based on the mass production data and a preset statistical method to generate static identification parameters of the dominant channel.

[0072] In an embodiment of the present invention, the dominant channel includes a strong response channel and a secondary response channel, and the preliminary identification unit includes: a well group selection module, used to select a specific well group in the area to be studied; a dynamic analysis module, used to perform production dynamic analysis on the specific well group to obtain first analysis data; a first preliminary identification module, used to process the first analysis data based on the geological data and the preset mass production data to obtain preliminary identification results for the strong response channel and the secondary response channel.

[0073] In an embodiment of the present invention, the dominant channel also includes a gas channel, and the preliminary identification unit also includes: an injection monitoring module, which is used to perform a tracer injection operation on the area to be studied and obtain a corresponding injection monitoring result; a preliminary determination module, which is used to preliminarily determine the gas channel based on the injection monitoring result; and a second preliminary identification module, which is used to obtain exhaust gas monitoring data, preliminarily identify the area to be studied based on the exhaust gas monitoring data and the geological data, and generate a preliminary identification result for the gas channel.

[0074] In an embodiment of the present invention, the model building unit includes: a main control parameter determination module, which is used to determine the main control parameters of the dominant channel based on the preliminary identification result; a weight determination module, which is used to determine the weight information of the main control parameters; and a model building module, which is used to establish the dominant channel identification model based on the preset association algorithm, the main control parameters and the weight information.

[0075] In an embodiment of the present invention, the channel identification unit includes: a standard generation module, which is used to generate a channel identification standard based on the dominant channel identification model; a data acquisition module, which is used to acquire static geological data and dynamic production data of the production well to be identified; and a channel identification module, which is used to analyze the static geological data and the dynamic production data based on the channel identification standard to generate a corresponding channel identification result.

[0076] In an embodiment of the present invention, the device also includes a three-dimensional model generation unit, which is used to: after generating the channel identification result, generate a three-dimensional geological model of the dominant channel of the production well to be identified based on the channel identification result; and generate injection and production guidance information based on the three-dimensional geological model.

[0077] Furthermore, an embodiment of the present invention also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the method described in the embodiment of the present invention is implemented.

[0078] The optional implementation modes of the embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above implementation modes. Within the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical scheme of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.

[0079] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the embodiments of the present invention will not further describe various possible combinations.

[0080] Those skilled in the art can understand that all or part of the steps in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a program, and the program is stored in a storage medium, including a number of instructions to enable a single-chip microcomputer, a chip or a processor to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0081] In addition, various implementation modes of the embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the embodiments of the present invention, they should also be regarded as the contents disclosed by the embodiments of the present invention.

Claims

1. A method for identifying dominant channels in fire-driven reservoirs, characterized in that: The method comprises: Obtaining static identification parameters of the dominant channel of the fire drive reservoir, including: Acquire geological data of a to-be-studied area of ​​a fire-driven reservoir, wherein the to-be-studied area includes a tracer injection well, a high-efficiency well, and a medium-yield well; Obtaining production data of the area to be studied; Analyze the geological data based on the production data and the geological statistical analysis method to generate static identification parameters of the dominant channel; Performing preliminary identification of the dominant channel based on the static identification parameters to obtain a preliminary identification result; A dominant channel identification model is established based on the grey correlation algorithm and the preliminary identification results, including: Determine the main control parameters of the dominant channel based on the preliminary identification result; Determining weight information of the main control parameters; Establishing the dominant channel identification model based on the grey correlation algorithm, the main control parameters and the weight information; The dominant channel is identified based on the dominant channel identification model to generate a corresponding channel identification result, including: Generate a channel identification standard based on the dominant channel identification model; Obtain static geological data and dynamic production data of the production well to be identified; Analyze the static geological data and the dynamic production data based on the channel identification standard to generate corresponding channel identification results; After the channel identification result is generated, a three-dimensional geological model of the dominant channel of the production well to be identified is generated based on the channel identification result; Injection and production guidance information is generated based on the three-dimensional geological model.

2. The method according to claim 1, characterized in that The dominant channel includes a strong response channel and a secondary response channel, and the preliminary identification of the dominant channel based on the static identification parameter to obtain a preliminary identification result includes: Selecting a specific well group in the area to be studied; Performing production performance analysis on the specific well group to obtain first analysis data; The first analysis data is processed based on the geological data and the production data to obtain a preliminary identification result for the strong response channel and the secondary response channel.

3. The method according to claim 1, characterized in that The dominant channel also includes a gas channel, and the preliminary identification of the dominant channel based on the static identification parameter to obtain a preliminary identification result includes: Performing a tracer injection operation on the area to be studied to obtain corresponding injection monitoring results; Preliminarily determine the gas channeling channel based on the injection monitoring results; Acquire tail gas monitoring data, perform preliminary identification on the area to be studied based on the tail gas monitoring data and the geological data, and generate preliminary identification results for the gas channeling channel.

4. A device for identifying a dominant channel of a fire-driven reservoir, applied to the method for identifying a dominant channel of a fire-driven reservoir according to any one of claims 1 to 3, characterized in that: The device comprises: A static parameter acquisition unit is used to acquire static identification parameters of the dominant channel of the fire drive reservoir, and the static parameter acquisition unit includes: A geological data acquisition module, used to acquire geological data of a to-be-studied area of ​​the fire drive reservoir, wherein the to-be-studied area includes tracer injection wells, high-efficiency wells and medium-yield wells; A production data acquisition module, used to acquire the production data of the area to be studied; A static parameter acquisition module, used to analyze the geological data based on the production data and the geological statistical analysis method to generate static identification parameters of the dominant channel; A preliminary identification unit, used to perform preliminary identification on the dominant channel based on the static identification parameters to obtain a preliminary identification result; A model building unit is used to build a dominant channel identification model based on a grey correlation algorithm and the preliminary identification result, and the model building unit includes: A main control parameter determination module, used to determine the main control parameters of the dominant channel based on the preliminary identification result; A weight determination module, used to determine the weight information of the main control parameters; A model building module, used for building the dominant channel identification model based on the grey correlation algorithm, the main control parameters and the weight information; A channel identification unit is used to identify the dominant channel based on the dominant channel identification model and generate a corresponding channel identification result. The channel identification unit includes: A standard generation module, used for generating a channel identification standard based on the dominant channel identification model; A data acquisition module, used to acquire static geological data and dynamic production data of the production well to be identified; A channel identification module, used to analyze the static geological data and the dynamic production data based on the channel identification standard to generate corresponding channel identification results; The 3D model generation unit is used to: After the channel identification result is generated, a three-dimensional geological model of the dominant channel of the production well to be identified is generated based on the channel identification result; Injection and production guidance information is generated based on the three-dimensional geological model.

5. The device according to claim 4, characterized in that The dominant channel includes a strong response channel and a secondary response channel, and the preliminary identification unit includes: A well group selection module is used to select a specific well group in the area to be studied; A dynamic analysis module, used for performing production dynamic analysis on the specific well group to obtain first analysis data; The first preliminary identification module is used to process the first analysis data based on the geological data and the production data to obtain preliminary identification results for the strong response channel and the secondary response channel.

6. The device according to claim 4, characterized in that The dominant channel also includes an air channel, and the preliminary identification unit also includes: An injection monitoring module is used to perform a tracer injection operation on the area to be studied and obtain corresponding injection monitoring results; A preliminary determination module, used for preliminarily determining a gas channel based on the injection monitoring result; The second preliminary identification module is used to obtain exhaust gas monitoring data, perform preliminary identification on the area to be studied based on the exhaust gas monitoring data and the geological data, and generate a preliminary identification result for the gas channeling channel.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method described in any one of claims 1 to 3 is implemented.

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